(EPA)
Operator´s manual
Please read these instructions carefully
and make sure you understand them
before using the saw.
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KEY TO SYMBOLS
Symbols
CAUTION! Chain saws can be dangerous!
This product is fitted with a catalytic
converter
Careless or incorrect use can result in
serious or fatal injury to the operator or
others.
Switch off the engine by moving the stop
switch to the STOP position before
carrying out any checks or maintenance.
Please read the instructions carefully and
make sure you understand them before
using the saw.
Always wear:
Always wear approved protective gloves.
Regular cleaning is required.
• Approved protective helmet
• Approved hearing protection
• Protective glasses or visor
Both of the operator´s hands must be used
to operate the chain saw. Please see page
30 in your "Chain saw operator´s safety
manual".
Never operate a chain saw holding it with
one hand only. Please see page 30 in your
"Chain saw operator´s safety manual".
Visual check.
Contact of the guide bar tip with any object
should be avoided. Please see pages 12-21
in your "Chain saw operator´s safety
manual".
Protective glasses or a visor must be
worn.
Tip contact may cause the guide bar to
move suddenly upward and backward,
which may cause serious injury. Please see
pages 12-21 in your "Chain saw operator´s
safety manual".
Refuelling
Chain oil and chain oil flow adjustment
If your saw bears this decal it is equipped
with carburettor heating.
2– English
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CONTENTS
Before using a new saw
Contents
• Read the instructions carefully.
• Check cutting equipment is correctly fitted and adjusted.
See page 25.
• Refuel and start the saw. Check the carburetor settings.
See pages 26-29.
Key to symbols............................................................... 2
Safety instructions
Personal protective equipment ............................................ 4
Chain saw safety equipment ................................................ 4
Inspecting, maintaining and servicing chain saw safety
equipment............................................................................ 8
Cutting equipment................................................................ 10
How to avoid kickback ......................................................... 16
General safety precautions ................................................ 18
General working instructions.............................................. 19
• Do not use the saw until sufficient chain oil has reached the
chain, see page 14.
IMPORTANT! If the carburetor mixture is too lean it greatly
increases the risk of engine failure.
Poor maintenance of the air filter will cause carbon build-up on
the spark plug and lead to difficult starting.
If the chain is badly adjusted it will cause increased wear or
damage to the bar, drive sprocket and chain.
Maintenance, replacement, or repair of the emission
control devices and systems may be performed by any
nonroad engine repair establishment or individual.
What is what?
What is what? ....................................................................24
Assembly
Mounting guide bar and chain ........................................... 25
WARNING!
Under no circumstances may the design of
the machine be modified without the permis-
sion of the manufacturer. Always use genuine
spare parts/accessories. Non-authorized
modifications and/or accessories can result
in serious personal injury or the death of the
operator or others.
Fuel handling
Fuelmix .............................................................................. 26
Fuelling .............................................................................. 27
Start and stop
Start and stop ....................................................................28
Maintenance
Your warranty does not cover damage or
liability caused by the use of non-authorized
accessories or replacement parts.
Carburetor ......................................................................... 29
Starter device ....................................................................30
Air filter .............................................................................. 31
Spark plug ......................................................................... 31
Muffler ............................................................................... 31
Needle bearing maintenance ............................................ 31
Adjustment of the oil pump ................................................ 31
Cooling system .................................................................. 32
Centrifugal cleaning ”Turbo” .............................................. 32
Heated handles (2159W) .................................................. 32
Winter use ......................................................................... 32
Daily maintenance ............................................................. 33
Weekly maintenance ......................................................... 33
Monthly maintenance ........................................................33
A chain saw is a dangerous tool if used
carelessly or incorrectly and can cause
serious, even fatal injuries. It is very
important that you read and understand
these instructions.
Technical data
2159 ..................................................................................34
Emission Control Warranty Statement
Your warranty rights and obligations ................................. 35
You will find the following labels
on your chain saw:
Jonsered has a policy of continuous product development and
therefore reserves the right to modify the design and
appearance of products without prior notice.
English – 3
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SAFETY INSTRUCTIONS
PERSONAL PROTECTIVE EQUIPMENT
CHAIN SAW SAFETY EQUIPMENT
This section explains the various safety features of the saw,
how they work, and basic inspection and maintenance you
should carry out to ensure safe operation. (See the ”What is
what?” section to find out where these components are on Your
saw).
MOST CHAIN SAW ACCIDENTS HAPPEN
WHEN THE CHAIN TOUCHES THE OPERA-
TOR. You must wear approved safety
equipment whenever you use a chain saw.
Personal safety equipment cannot eliminate
the risk of injury but it will reduce the degree
of injury if an accident does happen. Ask your
chain saw dealer for help in choosing the right
equipment.
NEVER USE A CHAIN SAW THAT HAS
FAULTY SAFETY EQUIPMENT! Carry out the
inspection, maintenance and service routines
listed in this section.
• PROTECTIVE HELMET
• HEARING PROTECTION
• PROTECTIVE GLASSES
OR VISOR
• Chain brake and front hand
guard
• Throttle lock
• PROTECTIVE GLOVES
WITH SAW PROTECTION
• Chain catcher
• PROTECTIVE TROUSERS
WITH SAW PROTECTION
• Right hand guard
• Vibration damping system
• Stop switch
• BOOTS WITH SAW
PROTECTION, STEEL
TOE-CAP AND NON-SLIP
SOLE
Generally clothes should be
close-fitting without restricting
your freedom of movement.
• Muffler
• ALWAYS HAVE A FIRST
AID KIT NEARBY
• Cutting equipment (see
”Cutting equipment”
section).
4– English
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SAFETY INSTRUCTIONS
3a Starting
1 Chain brake and front hand guard
The chain brake should be
activated when starting.
YOUR chain saw is equipped with a chain brake that is desig-
ned to stop the chain immediately if you get a kickback.
The chain brake reduces the risk of accidents, but only You can
prevent them.
b
You can also use the
chain brake as a
Take care when using your
saw and make sure the
kickback zone of the bar
never touches any object.
temporary brake when you
change position or if you
put the saw down for a
short time. You should
also apply the chain brake
manually if there is a risk
of the chain accidentally
hitting anyone or anything
close by.
1
The chain brake (A) can
either be activated
manually (by your left
hand) or automatically by
the inertia release
B
mechanism (a free-
swinging pendulum). On
most of our models the
front hand guard acts as a
counterweight in case of
kickback.
A
B
The brake is applied
when the front hand
guard (B) is pushed
forwards.
4
To release the chain brake
pull the front hand guard
backwards, towards the
front handle.
This movement activates
a spring-loaded
mechanism that tightens
the Brake Band (C)
around the engine drive
system (D) (Clutch Drum).
C
5
As mentioned in section A,
kickback can be very
sudden and violent.
Most kickbacks are
minor and do not always
activate the chain brake.
If this happens you
should hold the chain
saw firmly and not let
go.
D
2
The front hand guard is
not designed solely to
activate the chain brake.
Another important safety
feature is that it prevents
the chain from hitting your
left hand if you lose your
grip on the front handle.
English – 5
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SAFETY INSTRUCTIONS
6
The way the chain brake is triggered, either manually or
2 Throttle lock
automatically, depends on the force of the kickback and the
position of the chain saw in relation to the object that the
kickback zone of the bar strikes.
The throttle lock is designed
to prevent accidental opera-
tion of the throttle control.
When you press the lock (A)
(i.e. when you grasp the
handle) it releases the throttle
trigger (B).
If you get a violent
kickback while the
kickback zone of the bar
is farthest away from you
the chain brake will be
activated by the
movement of the
counterweight (INERTIA
ACTIVATED).
A
When you release the handle
the throttle trigger and the
throttle lock both move back
to their original positions. This
movement is controlled by two
independent return springs.
This arrangement means that
the throttle control is
B
automatically locked at the
idle setting when you release
the handle.
3 Chain catcher
The chain catcher is designed
to catch the chain if it snaps or
jumps off. This should not
happen if the chain is properly
tensioned (see section on
”Assembly”) and if the bar and
chain are properly serviced
and maintained.
If the kickback is less
violent or the kickback
zone of the bar is closer
to you the chain brake will
be activated manually by
the movement of your left
hand.
(See section on ”General
workinginstructions”).
4 Right hand guard
Apart from protecting your
hand if the chain jumps or
snaps, the right hand guard
stops branches and twigs
from interfering with your grip
on the rear handle.
7
During felling your left
hand grasps the front
handle in such a way that
it cannot activate the front
hand guard. In this
position the chain brake
can only be activated by
the inertia action of the
counterweight.
The inertia activated
chain brake increases
your safety but there are
certain factors to
remember (see point 6
above).
6– English
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SAFETY INSTRUCTIONS
5 Vibration damping system
6 Stop switch
Use the stop switch to switch
off the engine.
Your chain saw is equipped
with a vibration damping
system that is designed to
minimise vibrations and make
operation easier.
When you use a chain saw
vibrations are generated by
the uneven contact between
the chain and the wood you
are cutting.
Cutting hardwoods (most
broadleaf trees) creates more
vibration than cutting
softwoods (most conifers).
Cutting with a chain that is
blunt or faulty (wrong type or
badly sharpened, see section
D) will increase the vibration
level.
7 Muffler
The muffler is designed to keep noise levels to a minimum and
to direct exhaust fumes away from the user.
The vibration damping system
reduces the vibrations
The exhaust fumes from the engine are very
hot and may contain sparks which can start a
fire. Never start the saw indoors or near
combustible material!
transmitted from the engine
and chain to the handles of
the chain saw. The body of
the saw, including the cutting
equipment, is insulated from
the handles by vibration
damping units.
In areas with a hot, dry
climate there is a high risk of
forest fires. These areas are
sometimes controlled by
legislation and requirements
that among other things the
muffler must be equipped with
an approved type of spark
arrestor mesh.
Overexposure to vibration can lead to
circulatory damage or nerve damage in people
who have impaired circulation.
Contact your doctor if you experience
symptoms of overexposure to vibration.
These symptoms include numbness, loss of
feeling, tingling, pricking, pain, loss of
strength, changes in skin colour or condition.
These symptoms normally appear in the
fingers, hands or wrists.
For mufflers it is very
important that you follow the
instructions on checking,
maintaining and servicing your
saw (see the section on
”Inspecting, maintaining and
servicing chain saw safety
equipment”).
The muffler gets very hot in use and remains
so for a short time afterwards. DO NOT
TOUCH THE MUFFLER IF IT IS HOT!
WARNING!
The catalytic converter muffler gets very hot
during and after use. This also applies during
idling. Be aware of the fire hazard, especially
when handling the saw near flammable
substances or vapours.
English – 7
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SAFETY INSTRUCTIONS
3
Checking the inertia brake release
Inspecting, maintaining and servicing
chain saw safety equipment
SPECIAL TRAINING IS REQUIRED to service
and repair chain saws. This is especially true
of chain saw safety equipment. If your chain
saw fails any of the checks described below
take it to your SERVICE AGENT.
When you buy any of our products we
guarantee the availability of professional
repairs and service. If the retailer who sells
your saw is not a SERVICING DEALER, ask
him for the address of your nearest SERVICE
AGENT.
Hold the chain saw over a
stump or other firm object.
Let go of the front handle
so that the bar falls onto
the stump.
1 Chain brake and front hand guard
1
Checking brake band wear
When the bar hits the
stump the brake should
be applied.
Brush off any sawdust,
resin and dirt from the
chain brake and clutch
drum. Dirt and wear can
impair operation of the
brake.
4
Checking the brake trigger
Regularly check that the
brake band is at least 0.6
mm thick at its thinnest
point.
Start the chain saw and
place it on firm ground.
Make sure the chain does
not touch the ground or
any other object.
2
Checking the front hand guard
A Make sure the
FRONT HAND GUARD
is not damaged and
that there are no visible
defects such as cracks.
Grasp the saw firmly,
wrapping your fingers and
thumbs around the
handles.
Apply full throttle and
activate the chain brake
by tilting your wrist
forward onto the front
hand guard. Do not let go
of the front handle.
B Move the front hand
guard forwards and
back to make sure it
runs freely and that it is
securely anchored to
the clutch cover.
The chain should stop
immediately.
8– English
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SAFETY INSTRUCTIONS
2 Throttle lock
4 Right hand guard
1
Make sure the throttle
control is locked at the
idle setting when you
release the throttle lock.
Check that the right hand
guard is not damaged and
that there are no visible
defects, such as cracks.
2
Press the throttle lock and
make sure it returns to its
original position when you
release it.
5 Vibration damping system
Regularly check the
vibration damping units
for cracks or deformation
3
Check that the throttle
control and throttle lock
move freely and that the
return springs work
properly.
Make sure the vibration
damping units are
securely attached to the
engine unit and handles.
4
Start the saw and apply
full throttle. Release the
throttle control and check
that the chain stops and
remains stationary. If the
chain rotates when the
throttle is on idle setting
you should check the
carburetor idle
6 Stop switch
adjustment. See the
section on ”Maintenance”.
Start the engine and
make sure the engine
stops when you move the
stop switch to the stop
setting.
3 Chain catcher
Check that the CHAIN
CATCHER is not
damaged and is firmly
attached to the body of
the saw.
English – 9
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SAFETY INSTRUCTIONS
7 Muffler
CUTTING EQUIPMENT
Never use a chain saw
This section describes how to choose and maintain your cutting
equipment in order to:
that has a faulty muffler.
• Reduce the risk of kickback.
• Reduce the risk of the chain breaking or jumping.
• Obtain maximum cutting performance.
• Extend the life of cutting equipment.
The 5 basic rules
1
Only use cutting
equipment
recommended by us!
See the ”Technical data”
section.
Regularly check that the
muffler is securely
attached to the chain saw.
2
Keep the chain cutting
teeth properly
If the muffler on your saw
is fitted with a spark
arrestor mesh this must
be cleaned regularly. A
blocked mesh will cause
the engine to overheat
and may lead to serious
damage.
sharpened! Follow our
instructions and use the
recommended file
gauge. A damaged or
badly sharpened chain
increases the risk of
accidents.
Never use a muffler if
the spark arrestor mesh
is missing or defective.
3
Maintain the correct
raker clearance! Follow
our instructions and
use the recommended
raker gauge. Too large a
clearance increases the
risk of kickback.
NEVER USE A CHAIN SAW WITH FAULTY
SAFETY EQUIPMENT. CARRY OUT THE
CHECKS AND MAINTENANCE MEASURES
DESCRIBED IN THIS SECTION. IF YOUR
CHAIN SAW FAILS ANY OF THESE CHECKS
CONTACT YOUR SERVICE AGENT TO GET IT
REPAIRED.
4
Keep the chain properly
tesioned! If the chain is
slack it is more likely to
jump off and lead to
increased wear on the
bar, chain and drive
sprocket.
5
Keep cutting equipment
well lubricated and
properly maintained!
A poorly lubricated chain
is more likely to break and
lead to increased wear on
the bar, chain and drive
sprocket.
10– English
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SAFETY INSTRUCTIONS
C
Some terms that describe the bar and chain
1 Cutting equipment designed to minimise
When the cutting equipment supplied with your saw becomes
worn or damaged you will need to replace it. Use only the type
of bar and chain recommended by us. See the ”Technical data”
section to find out which equipment is recommended for your
saw.
kickback
Faulty cutting equipment or the wrong
combination of bar and chain increases the
risk of kickback. Use only the bar and chain
combinations recommended in the ”Technical
data” section.
Bar
The only way to avoid kickback is to make sure that the kick-
back zone of the bar never touches anything.
• LENGTH (inches/cm)
By using cutting equipment with “built-in” kickback protection
and keeping the chain sharp and well-maintained you can
reduce the effects of kickback.
• NUMBER OF TEETH ON
BAR TIP SPROCKET (T).
Small number = small tip
radius = low-kickback
A Bar
The smaller the tip radius the
smaller the kickback zone and
the lower the chance of
kickback.
• CHAIN PITCH (inches)
The spacing between the
drive links of the chain must
match the spacing of the
teeth on the bar tip sprocket
and drive sprocket.
• NUMBER OF DRIVE LINKS
The number of drive links is
determined by the length of
the bar, the chain pitch and
the number of teeth on the
bar tip sprocket.
B Saw chain
A saw chain is made up of a number of links, which are
available in standard and low-kickback versions.
None
Standard Low-kickback
• BAR GROOVE WIDTH
(inches/mm)
The groove in the bar must
match the width of the chain
drive links.
CUTTING LINK
DRIVE LINK
• SAW CHAIN OIL HOLE
AND HOLE FOR CHAIN
TENSIONER
The bar must be matched to
the chain saw design.
SIDE LINK
Saw chain
Combining these links in different ways gives different degrees
of kickback reduction. In terms of kickback reduction alone, four
different types of link are available.
• SAW CHAIN PITCH (=PITCH)
(inches)
Kickback reduction
LOW
Cutting link
Drive link
Side link
• DRIVE LINK WIDTH (mm/
inches)
STANDARD
HIGH
• NUMBER OF DRIVE LINKS
• LEVEL OF KICKBACK
REDUCTION
The level of kickback
reduction offered by a chain
is indicated by its model
number.
EXTRA HIGH
See the ”Technical data”
section to find the model
numbers of chains that are
recommended for use with
your saw.
English – 11
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SAFETY INSTRUCTIONS
It is very difficult to sharpen a
chain correctly without the
right equipment. We
2 Sharpening your chain and adjusting
raker clearance
recommend you use a file
gauge. This will help you
obtain the maximum kickback
reduction and cutting
The risk of kickback is increased with a badly
sharpened chain!
performance from your chain.
A General information on sharpening cutting teeth
• Never use a blunt chain. When the chain is blunt you have to
exert more pressure to force the bar through the wood and
the cuttings will be very small. If the chain is very blunt it will
not produce any cuttings at all, just wood powder.
The following faults will increase the risk of
kickback considerably.
• A sharp chain eats its way
through the wood and
produces long, thick
cuttings.
•
•
•
FILE ANGLE TOO
LARGE
CUTTING ANGLE
TOO SMALL
A
• The cutting part of the chain
is called the CUTTING LINK
FILE DIAMETER
TOO SMALL
B
and this consists of a
CUTTING TOOTH (A) and
the RAKER LIP (B). The
cutting depth is determined
by the difference in height
between the two.
B
Sharpening cutting
teeth
• When you sharpen a cutting tooth there are five important
factors to remember.
To sharpen cutting teeth you
will need a ROUND FILE and
a FILE GAUGE. See the
”Technical data” section for
information on the size of file
and gauge that are
FILING ANGLE
recommended for your saw
chain.
1
2
Check that the chain is
correctly tensioned. A
slack chain is difficult to
sharpen correctly.
CUTTING ANGLE
FILE POSITION
Always file cutting teeth
from the inside face,
reducing the pressure on
the return stroke.
min 4 mm
(0,16")
ROUND FILE DIAMETER
File all the teeth on one
side first, then turn the
saw over and file the
teeth on the other side.
FILE DEPTH
3
File all the teeth to the
same length. When the
length of the cutting teeth
is reduced to 4 mm
(0,16") the chain is worn
out and should be
1
5
See the ”Technical data” section for information about
sharpening your saw chain.
replaced.
12– English
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SAFETY INSTRUCTIONS
C General advice on setting raker clearance
D Setting the raker clearance
• When you sharpen the
cutting teeth you reduce the
RAKER CLEARANCE
(cutting depth). To maintain
cutting performance you
must file back the raker
teeth to the recommended
height.
• Before setting the raker clearance the cutting teeth should be
newly sharpened.
We recommend that you adjust the raker clearance every
third time you sharpen the chain. NOTE! This
recommendation assumes that the length of the cutting teeth
is not reduced excessively.
See the ”Technical data”
section to find the raker
clearance for your saw
chain.
• To adjust the raker
clearance you will need a
FLAT FILE and a RAKER
GAUGE.
• On a low-kickback cutting
link the front edge of the
raker lip is rounded. It is
very important that you
maintain this radius or bevel
when you adjust the raker
clearance.
• Place the gauge over the
raker lip.
• Place the file over the part
of the lip that protrudes
through the gauge and file
off the excess. The
clearance is correct when
you no longer feel any
resistance as you draw the
file over the gauge.
• We recommend the use of a
raker gauge to achieve the
correct clearance and bevel
on the raker lip.
The risk of kickback is increased if the raker
clearance is too large!
3 Tensioning the chain
A slack chain may jump off and cause serious
or even fatal injury.
• The more you use a chain the longer it becomes. It is
therefore important to adjust the chain regularly to take up the
slack.
• Check the chain tension every time you refuel.
NOTE! A new saw chain has a running-in period during which
you should check the tension more frequently.
• Tension the chain as tightly
as possible, but not so tight
that you cannot pull it round
freely by hand.
English – 13
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SAFETY INSTRUCTIONS
4 Lubricating cutting equipment
Poor lubrication of cutting equipment may
cause the chain to snap and lead to serious,
even fatal injuries.
1
2
Undo the bar nuts that
hold the clutch cover and
chain brake, using the
combination spanner.
Then tighten the nuts by
hand as tight as you can.
A
Chain oil
• Chainsaw chain oil must demonstrate good adhesion to the
chain and also maintain its flow caracteristics regardless of
whether it is warm summer or cold winter weather.
Raise the tip of the bar
and stretch the chain by
tightening the chain
tensioning screw using
the combination spanner.
Tighten the chain until it
not hang slack on the
underside of the bar.
• As a chainsaw manufacturer we have developed an optimal
chain oil which has a vegetable oil base. We recommend the
use of our own oil for both maximum chain life and to
minimise environmental damage.
• If our own chain oil is not available, standard chain oil is
recommended.
• In areas where oil specifically for lubrication of saw chains is
unavailable, ordinary EP 90 transmission oil may be used.
3
Use the combination
spanner to tighten the bar
nuts while lifting the tip of
the bar at the same time.
Check that you can pull
the chain round freely by
hand and that it is not
slack on the bottom of the
bar.
• Never use waste oil!
This is dangerous for yourself, the saw and the environment.
B
Filling with chain oil
• All our chain saws have an
automatic chain lubrication
system. On some models
the oil flow is also
The position of the chain tensioning screw varies from
model to model. See the” What is what” section to find out
where it is on your saw.
adjustable.
• The sizes of the chain oil
tank and fuel tank have
been chosen so that the
saw will run out of fuel
before running out of oil.
This means that you should
never run with a dry chain.
However, this safety feature
requires that you use the
right sort of chain oil (if the
oil is too thin it will run out
before the fuel), and that
you adjust the carburetor as
recommended (a weak
mixture may mean that the
fuel lasts longer than the
oil). You should also use the
recommended cutting
equipment (a bar that is too
long will use more chain oil).
The above conditions also
apply to models with an
adjustable oil pump.
14– English
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SAFETY INSTRUCTIONS
C Checking chain lubrication
E
Needle bearing maintenance
• Check the chain lubrication
each time you refuel.
A
B
The clutch drum is equipped
with one of the following
chain sprockets:
Aim the tip of the saw at a
light coloured surface about
20 cm away. After 1 minute
running at 3/4 throttle you
should see a distinct line of
oil on the light surface.
• Spur sprocket (A) (the chain
sprocket is welded on the
drum)
• Rim sprocket (B)
(exchangeable)
Both versions have built-in
needle bearing at the drive
shaft, whitch has to be
greased regularly (once a
week).
NOTE! Use only high quality bearing grease.
If the chain lubrication is not working:
1
Check that the oil channel
in the bar is not
F
Checking wear on cutting equipment
Saw chain
obstructed. Clean if
necessary.
Check the saw chain daily for:
• Visible cracks in rivets and
links.
• Whether the chain is stiff.
• Whether rivets and links are
badly worn.
2
3
Check that the groove in
the edge of the bar is
clean. Clean if necessary.
Check that the bar tip
sprocket turns freely and
that the lubricating hole in
the tip is not blocked.
Clean and lubricate if
necessary.
We recommend you
min 4 mm
(0,16")
compare the existing chain
with a new chain to decide
how badly it is worn.
When the length of the
cutting teeth has worn down
to only 4 mm the chain must
be replaced.
If the chain lubrication
system is still not working
after carrying out the
above measures you
should contact your
service agent.
G Chain drive sprocket
The clutch drum is fitted with
one of the following drive
sprockets:
D Lubricating the bar tip sprocket
A
B
A
B
SPUR (integral drive
sprocket)
• Lubricate the bar tip
sprocket each time you
refuel. Use the special
grease gun and a good
quality bearing grease.
RING (replaceable)
Regularly check the
degree of wear on the
drive sprocket. Replace if
wear is excessive.
Replace the drive
sprocket whenever you
replace the chain.
English – 15
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SAFETY INSTRUCTIONS
H Bar
HOW TOAVOID KICKBACK
Kickback can happen very suddenly and
violently; kicking the saw, bar and chain back
at the user. If this happens when the chain is
moving it can cause very serious, even fatal
injuries. It is vital you understand what causes
kickback and that you can avoid it by taking
care and using the right working technique.
Check regularly:
• Whether there are burrs on
the edges of the bar.
Remove these with a file if
necessary.
What is kickback?
The word kickback is used to
describe the sudden reaction
that happens when the upper
quadrant of the tip of the bar
(known as the “kickback zone”)
touches an object and the
saw is kicked backwards.
• Whether the groove in the
bar has become badly worn.
Replace the bar if
necessary.
• Whether the tip of the bar is
uneven or badly worn. If a
hollow forms on one side of
the bar tip this is due to a
slack chain.
Kickback always occurs in
the cutting plane of the saw.
Normally the saw and bar are
thrown backwards and
upwards towards the user.
However the saw may move
in a different direction
depending on the way it was
being used when the kickback
zone of the bar touched the
object.
• To prolong the life of the bar
you should turn it over daily.
MOST CHAIN SAW ACCIDENTS HAPPEN
WHEN THE CHAIN TOUCHES THE OPERA-
TOR.
Kickback only occurs if the
kickback zone of the bar
touches an object.
•
•
WEAR PERSONAL PROTECTIVE EQUIPMENT
(see the section on ”Chain saw safety
equipment”).
DO NOT TACKLE ANY JOB YOU ARE UNSURE OF
(see the section on ”Personal protective
equipment”, ”How to avoid kickback”, ”General
working instructions” and ”Cutting equipment”).
•
•
•
AVOID SITUATIONS WHERE THERE IS A RISK OF
KICKBACK (see the section on ”Personal
protective equipment”).
USE THE RECOMMENDED SAFETY EQUIPMENT
AND CHECK ITS CONDITION (see section on
”General working instructions”).
CHECK THAT ALL SAFETY FUNCTIONS ARE
WORKING (see section on ”General working
instructions” and ”General precautions”).
16– English
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SAFETY INSTRUCTIONS
7
Take great care when you
cut with the top edge of
the bar, i.e. when cutting
from the underside of the
object. This is known as
cutting on the push
General rules
1
If you understand what kickback is and how it happens then
you can reduce or eliminate the element of surprise. By
being prepared you reduce the risk. Kickback is usually
quite mild, but it can sometimes be very sudden and
violent.
stroke. The chain tries to
push the saw back
2
Always hold the saw
firmly with your right hand
on the rear handle and
your left hand on the front
handle.
towards the user.
Unless the user resists
this pushing force there is
a risk that the saw will
move so far backwards
that only the kickback
zone of the bar is in
Wrap your fingers and
thumb around the hand-
les. You should use this
grip whether you are
right-handed or left-
handed. This grip
contact with the tree. This
will cause kickback.
minimises the effect of
kickback and lets you
keep the saw under
control.
Do not let go of the
handles!
Cutting with the bottom
edge of the bar, i.e. from
the top of the object
downwards, is known as
cutting on the pull stroke.
3
Most kickback accidents
happen during limbing.
Make sure you are
standing firmly and that
there is nothing in the way
that might make you trip
or lose your balance.
In this case the saw pulls
itself towards the tree and
the front edge of the saw
provides a natural rest
when cutting. Cutting on
the pull stroke gives you
better control over the
saw and the position of
the kickback zone.
Lack of concentration can
lead to kickback if the
kickback zone of the bar
accidentally touches a
branch, nearby tree or
some other object.
4
Never use the saw above
shoulder height and try
not to cut with the tip of
the bar.
8
Follow the instructions on sharpening and maintaining your
bar and chain. When you replace the bar and chain use
only combinations that are recommended by us. See the
sections on ”Cutting equipment” and ”Technical data”.
Never use the saw one-
handed!
The risk of kickback is increased if you use
the wrong cutting equipment or a chain that is
not sharpened correctly. The wrong
combination of bar and chain can increase the
risk of kickback!
5
In order to keep control of
your saw, always
maintain a firm foothold.
Never work on a ladder,
in a tree or on any other
insecure support.
6
Always use a fast cutting speed, i.e. full throttle.
English – 17
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SAFETY INSTRUCTIONS
7
FUEL SAFETY
(Refuelling, fuel mixture, storage.)
GENERAL SAFETY PRECAUTIONS
1
Chain saws are designed solely for cutting wood. The only
cutting equipment that can be used with this chain saw are
the combinations of bars and chains recommended in the
”Technical data” section.
WARNING!
The catalytic converter muffler gets very hot
during and after use. This also applies during
idling. Be aware of the fire hazard, especially
when handling the saw near flammable
substances or vapours.
2
Never use a chain saw if
you are tired, if you have
drunk alcohol, or if you
are taking medication that
affects your vision, your
judgement or your co-
ordination.
Fuel and fuel vapour are highly inflammable.
Take care when handling fuel and chain oil.
Keep away from naked flames and do not
breathe in fuel vapour.
3
4
Always wear suitable safety clothing. See the section on
”Personal protective equipment”.
• Never try to refuel the saw
while it is running.
Never use a chain saw that has been modified in any way
from its original specification.
• Make sure there is plenty of
ventilation when refuelling
or mixing fuel (2-stroke
mixture).
5
Never use a chain saw
that is faulty. Carry out
the regular checks,
• Move the saw at least 3 m
from the refuelling point
before starting it.
maintenance and service
routines described in this
manual. Some
maintenance and service
measures must be carried
out by trained specialists.
See the section on
• Never start the chain saw:
a) If you have spilt fuel or
chain oil on the saw.
Wipe off the spill and
allow remaining fuel to
evaporate.
Min. 3 m
(10 ft)
”Maintenance”.
b) If you spill fuel or chain
oil on yourself or your
clothes. Change your
clothes.
c) If there is a fuel leak.
Check regularly for
leaks from the
6
STARTING
• Never start a chain saw
unless the bar, chain and all
covers are fitted correctly.
(See section on
”Assembly”).
FUEL CAP and FUEL
LINES.
• Never start a chain saw
indoors. Exhaust fumes can
be dangerous.
• Before starting the saw
make sure there are no
people or animals nearby
who might be put at risk.
•
Always store the chain saw and fuel away from any
sources of sparks or naked flames, e.g. machines, electric
motors, relays, switches, boilers, etc.
• The chain brake should be
activated when starting (see
section on ”Starting”). Do
not drop start. This method
is very dangerous because
you may lose control of the
saw (see section on
•
•
Always store fuel in an approved container designed for
that purpose.
For longer periods of storage or for transport of the saw,
the fuel and chain oil tanks should be emptied. Ask where
you can dispose of waste fuel and chain oil at your local
gasoline station.
”Starting”).
• Place the saw on the
ground and hold the rear
handle down with your right
foot. Grasp the front handle
firmly using your left hand.
Make sure the chain saw is
steady and the chain is not
touching the ground. Then
grasp the starter handle
with your right hand and pull
the starter cord. Never wrap
the starter cord around your
hand.
8
Never use any accessories other than those recommended
in this manual. See the sections on ”Cutting equipment”
and ”Technical data”.
The risk of accident is increased if you use the
wrong cutting equipment or a chain that is not
sharpened correctly. Using the wrong combi-
nation of bar and chain can increase the risk
of accidents!
18– English
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SAFETY INSTRUCTIONS
4
Check the area around
you for possible obstacles
such as roots, rocks,
branches, ditches, etc., in
case you have to move
suddenly. Take great care
when working on sloping
ground.
GENERAL WORKING INSTRUCTIONS
This section describes basic safety rules for
using a chain saw. This information is no
substitute for professional skills and
experience. If you get into a situation where
you feel unsafe, stop and seek expert advice
(look under FORESTRY SERVICES in the
telephone directory).
DO NOT ATTEMPT ANY TASK THAT YOU
FEEL UNSURE OF!
Important
1 Before using a chain saw you must understand the effects of
kickback and what causes it. (See the section on ”How to
avoid kickback”.)
5
Take the utmost care
when cutting through
branches or logs that are
in tension. A log or branch
that is in tension can
2 Before using a saw you must understand the difference
between sawing with the top and bottom edges of the bar.
(See the section on ”How to avoid kickback”.)
suddenly spring back into
its natural position before
or after you cut it. If you
stand on the wrong side
or start cutting in the
wrong place it may strike
you or your chain saw.
This could make you lose
control and cause a
1 Basic safety rules
1
Look around you:
• to make sure there are no
people, animals or other
objects nearby that might
affect your work.
serious accident.
• to make sure that none of
the above might come within
reach of your saw or be
injured by falling trees.
6
Before moving your chain
saw switch off the engine
and lock the chain using
the chain brake. Carry the
saw with the bar and
Follow the instructions above, but do not use a chain saw in a
situation where you cannot call for help in case of an accident.
chain pointing backwards.
Fit a guard to the bar
before carrying the saw
any distance.
2
3
Do not use the saw in bad weather, such as dense fog,
heavy rain, strong wind, intense cold, etc. Working in cold
weather is tiring and often brings added risks, such as icy
ground, unpredictable felling direction, etc.
Take great care when removing small branches and avoid
cutting bushes (i.e. cutting many small branches at the
same time). Small branches can be grabbed by the chain
and thrown back at you, causing serious injury.
7
Never put a chain saw
down while the engine is
running unless you have it
in clear view and the
chain brake is on. Switch
the engine off before
leaving your chain saw for
any length of time.
English – 19
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SAFETY INSTRUCTIONS
Two factors decide whether the chain will jam or the log will
split. The first is how the log is supported and the second is
whether it is in tension.
2 Basic cutting technique
General
• Always use full throttle when cutting!
In most cases you can avoid these problems by cutting in two
stages; from the top and from the bottom of the log. You need
to support the log so that it will not trap the chain or split during
cutting.
• Reduce the speed to idle after every cut (running the
engine for too long at full throttle without any load can lead to
serious engine damage).
• Cutting from above = Cutting on the pull stroke.
• Cutting from below = Cutting on the push stroke.
If the chain jams in the cut:
STOP THE ENGINE! Don’t try to pull the saw
free. If you do you may damage the chain
when the saw suddenly breaks free. Use a
lever to open up the cut and free the bar.
See the section on ”How to avoid kickback” to find out why
cutting on the push stroke increases the risk of kickback.
Terms:
Cutting
Limbing
=
=
General term for cutting through wood.
Cutting limbs off a felled tree.
The following instructions describe how to handle most types of
situation that you will be faced with when using a chain saw.
Splitting = When the object you are cutting breaks off
before the cut is complete.
Cutting
1
The log is lying on the
ground. There is little risk
of the chain jamming or
the log splitting. However
there is a risk that the
chain will touch the
ground when you finish
the cut.
There are five important factors you should consider
before making a cut:
1
2
3
Make sure the bar will not
jam in the cut.
Cut all the way through
the log from above. Try
not to touch the ground as
you finish the cut.
Maintain full throttle but
be prepared in case the
chain snatches.
Make sure the log will not
split.
A If it is possible to turn
the log you should stop
cutting about 2/3 of the
way through.
Make sure the chain will
not strike the ground or
any other object during or
after cutting.
B Turn the log and finish
the cut from the
opposite side.
4
5
Is there a risk of kick-
back?
Do the conditions and
surrounding terrain affect
your safety when
working?
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SAFETY INSTRUCTIONS
2 The log is supported at one
end. There is a high risk
that it will split.
3 Tree felling technique
It takes a lot of experience to fell a tree.
Inexperienced users of chain saws should not
fell trees. NEVER ATTEMPT A TASK YOU ARE
UNSURE OF.
A
Safe distance
A Start by cutting from
below (about 1/3 of the
way through).
The safe distance between a tree that is to be felled and
anyone else working nearby is at least 21/2 tree lengths.
Make sure that no-one else is in this “risk zone” before or during
felling.
B Finish by cutting from
above so that the two
cuts meet.
3 The log is supported at both
ends. There is a high risk
that the chain will jam.
B
Felling direction
The aim is to fell the tree in the best possible position for
subsequent limbing and cross-cutting. You want it to fall on
ground where you can move about safely.
The main point to avoid is
letting the tree fall onto
another tree. It can be both
difficult and dangerous to
remove a tree in such a
position (see point 4 in this
section).
A Start by cutting from
above (about 1/3 of the
way through).
Once you have decided which
way you want the tree to fall
you must judge which way the
tree would fall naturally.
B Finish by cutting from
below so that the two
cuts meet.
Several factors affect this:
Lean of the tree
Bend
Limbing
Wind direction
When limbing thick branches
you should use the same
approach as for cutting.
Cut difficult branches piece by
piece.
2
1
Arrangement of branches
Weight of snow
3
You may find you are forced to let the tree fall in its natural
direction because it is impossible or dangerous to try to make it
fall in the direction you first intended.
Another very important factor, which does not affect the felling
direction but does affect your safety, is to make sure the tree
has no damaged or dead branches that might break off and hit
you during felling.
During critical felling operations, hearing
protectors should be lifted immediately when
sawing is completed so that sounds and
warning signals can be heard.
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SAFETY INSTRUCTIONS
C Clearing the trunk and preparing your retreat
FELLING CUT
The felling cut is made from the opposite side of the tree and it
must be perfectly horizontal. Stand on the left side of the tree
and cut with the bottom edge of the bar.
Remove any branches that
are in the way. To do this it is
best to work from the top
down and keep the trunk
between you and the chain
saw. Never limb above
shoulder height.
Make the FELLING CUT
about 3-5 cm (1.5-2 inches)
above the flat section of the
DIRECTIONAL CUT.
Use full throttle and bring the
bar and chain slowly into the
tree. Make sure the tree does
not start to move in the
opposite direction to your
intended felling direction.
Drive a WEDGE or BREA-
KING BAR into the cut as
soon as it is deep enough.
Remove any undergrowth
from the base of the tree and
check the area for obstacles
(stones, branches, holes, etc.)
so that you have a clear path
of retreat when the tree starts
to fall. Your path of retreat
should be roughly 135
degrees behind the intended
felling direction.
Finish the FELLING CUT
parallel with the
DIRECTIONAL CUT LINE so
that the distance between
them is at least at least 1/10
of the trunk diameter. The
uncut section of the trunk is
called the HINGE.
D Felling
Felling is done using three cuts. First you make the
DIRECTIONAL CUTS, which consist of the TOP CUT and the
BOTTOM CUT; followed by the FELLING CUT. By placing
these cuts correctly you can control the felling direction very
accurately.
The HINGE act as hinges that
control the felling direction of
the falling tree.
DIRECTIONAL CUT
To make the DIRECTIONAL
CUT you begin with the TOP
CUT. Stand to the right of the
tree and cut downwards at an
angle.
All control over the felling
direction is lost if the HINGE is
too narrow or if the directional
cut and felling cut are badly
placed.
Next make the BOTTOM CUT
so that it finishes at the end of
the TOP CUT.
The directional cut should run
1/4 of the diameter through
the trunk and the angle
between the TOP CUT and
BOTTOM CUT should be 45°.
When the felling cut and
directional cut are complete
the tree should start to fall
under its own weight or with
the aid of a FELLING WEDGE
or BREAKING BAR.
The line where the two cuts
meet is called the
DIRECTIONAL CUT LINE.
This line should be perfectly
horizontal and at right angles
(90°) to the chosen felling
direction.
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SAFETY INSTRUCTIONS
We recommend that you use
a bar that is longer than the
diameter of the tree, so that
you can make the FELLING
CUT and DIRECTIONAL CUT
with single cutting stokes.
(See ”Technical data” to find
out which lengths of bar are
recommended for your saw).
4 Freeing a tree that has fallen badly = high
accident risk
A
Freeing a “Trapped tree”
The safest method is to use a winch.
A
Tractor-mounted
B
Portable
There are methods for felling
trees with a diameter larger
than the bar length. However
these methods involve a much
greater risk that the kickback
zone of the bar will come into
contact with the tree.
B
Cutting trees and branches that are in tension
Preparations:
a) Work out which way the tree or branch will move if released
and where the natural “BREAKING POINT” is (i.e. the place
it would break if it was bent even more).
UNLESS YOU HAVE SPECIAL TRAINING WE
ADVISE YOU NOT TO FELL TREES WITH A
DIAMETER LARGER THAN THE BAR LENGTH
OF YOUR SAW!
E
Limbing
MOST KICKBACK ACCIDENTS HAPPEN
DURING LIMBING!PAY CLOSE ATTENTION
TO THE POSITION OF THE KICKBACK ZONE
OF THE BAR WHEN YOU ARE LIMBING
BRANCHES THAT ARE IN TENSION!
Make sure there are no
obstacles in your way. Work
on the left side of the trunk.
Work close to the saw for
maximum control. If possible,
let the weight of the saw rest
on the trunk.
b) Decide which is the SAFEST way to release the tension
and whether YOU are able to do it safely. In complicated
situations the only safe method is to put aside your chain
saw and use a winch.
General advice:
a) Position yourself so that
you will be clear of the
tree or branch when it
springs free.
Keep the tree between you
and the saw as you move
along the trunk.
b) Make one or more cuts at
or near the BREAKING
POINT. Make as many
cuts of sufficient depth as
necessary to reduce the
tension and make the tree
or branch break at the
BREAKING POINT.
F Cutting the trunk into logs
See chapter ”General working instructions” point 2 ”Basic
cutting technique”.
Never cut straight
through a tree or branch
that is in tension!
English – 23
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WHAT IS WHAT?
7
28
L
H
T
10
5
H
Jonsered XXXXX TURBO
1
XXXX
2
3
XXXXXXX
Husqvarna AB
Huskvarna, SWEDEN
22
4
12
6
11
21
24
9
8
16
20 19 18 27
17
15
14
23
13
J
O
N
S
E
R
E
D
S
E
R
V
I
C
E
25
26
What is what?
16. Bumper.
1. Cylinder cover.
17. Chain catcher. Catches chain if it jumps or breaks.
18. Clutch cover.
2. Front handle.
3. Front hand guard.
4. Starter cover.
19. Right hand guard. Protects right hand if chain breaks or
jumps.
5. Chain oil tank.
6. Starter handle.
7. Adjuster screw, carburetor.
8. Choke control/Start throttle lock.
9. Rear handle.
20. Throttle control.
21. Throttle lock. Prevents accidental operation of throttle
control.
22. Decompression valve.
23. Combination spanner.
24. Chain tensioning screw.
25. Operator´s manual.
10. Stop switch. Ignition on/off switch.
11. Fuel tank.
12. Muffler.
26. Bar guard.
13. Bar tip sprocket.
14. Saw chain.
27. Oil pump adjustment screw.
28. Switch for heated handles (W).
15. Saw bar.
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ASSEMBLY
Mounting guide bar and chain
Always wear gloves, when working with the
chain, in order to protect your hands from
injury.
Hold up the tip of the bar and
tighten the chain. The chain is
correctly tensioned when
there is no slack on the
underside of the bar, but it can
still be turned easily by hand.
Hold up the bar tip and tighten
the bar nuts with the
Check that the chain brake is
combination wrench.
in disengaged position by
moving the front hand guard
towards the front handle.
When fitting a new chain, the
chain tension has to be
checked frequently until the
chain is run-in. Check the
chain tension regularly. A
correctly tensioned chain
gives good cutting
Take off the bar nuts and
remove the clutch cover. Take
off the transportation ring (A).
performance and long lifetime.
A
Fit the bar over the bar bolts.
Place the bar in its rearmost
position. Place the chain over
the drive sprocket and in the
groove on the bar. Begin on
the top side of the bar. Make
sure that the edges on the
cutting links are facing forward
on the top side of the bar.
Fit the clutch cover and locate
the chain adjuster pin in the
hole on the bar. Check that
the drive links of the chain fit
correctly on the drive sprocket
and that the chain is in the
groove on the bar. Tighten the
bar nuts finger tight.
Tension the chain by using
the combination wrench. Turn
the chain adjuster screw
clockwise. The chain should
be tensioned until it fits snugly
on the underside of the bar.
English – 25
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FUEL HANDLING
Mixing
Fuelmix
• Always mix the gasoline
and oil in a clean container
intended for fuel.
IMPORTANT! The chain saw is equipped with a two-stroke
engine and must always been run using a mixture of gasoline
and two-stroke engine oil. It is important to accurately measure
the amount of oil to be mixed to ensure that the correct mixture
is obtained. When mixing small amounts of fuel, even small
inaccuracies can drastically affect the ratio of the mixture.
• Always start by filling half
the amount of the gasoline
to be used. Then add the
entire amount of oil. Mix
(shake) the fuel mixture.
Add the remaining amount
of gasoline.
Always provide for good ventilation when
handling fuel.
• Mix (shake) the fuel mixture
thoroughly before filling the
saw’s fuel tank.
Gasoline
• This engine is certified to
operate on unleaded
gasoline.
• Do not mix more than max.
one month’s supply of fuel.
• Use good quality unleaded
gasoline.
• If the saw is not used for
some time the fuel tank
should be emptied and
cleaned.
• The lowest recommended
octane rating is 87. If you
run the engine on lower
octane rating than 87 so-
called “knocking“ can occur.
This leads to an increased
engine temperature, which
can result in a serious
• This engine is certified to
operate on unleaded
gasoline.
engine breakdown.
• When working at continuous
high revs a higher octane
rating is recommended.
Two-stroke oil
• For the best results use JONSERED two-stroke oil, which is
especially developed for chain saws. Mixing ratio 1:50 (2%).
• Never use two-stroke oil intended for water cooled outboard
engines, so-called, outboard oil.
The following applies to saws with catalytic
converter
Petrol
• Never use oil intended for four-stroke engines.
Always use high grade unleaded petrol (minimum octane rating
95). Leaded petrol will destroy the catalytic converter and it will
no longer serve its purpose. The green fuel cap on saws fitted
with catalytic converters means that only unleaded petrol can
be used.
Two-stroke oil
For best results and performance use Jonsered two-stroke oil,
which is specially formulated for chain saws. Mixture 1:50 (2%).
Gasoline
Oil
2%(1:50)
Lit.
5
10
15
20
Lit.
WARNING!
0,10
0,20
0,30
0,40
US
fl. oz.
2 1/2
6 1/2
12 7/8
The catalytic converter muffler gets very hot
during and after use. This also applies during
idling. Be aware of the fire hazard, especially
when handling the saw near flammable
substances or vapours.
US
gallon
For additional information about fuels, see above.
1
2 1/2
5
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FUEL HANDLING
Chain oil
Fuelling
• The chain lubrication
system is automatic. Always
use special chain oil with
good adhesive
Taking the following precautions, will lessen
the risk of fire.
characteristics.
• Do not smoke or place warm objects in the vicinity of
the fuel.
• In countries where no
special chain oil is available,
EP 90 transmission oil can
be used.
• Always shut off the engine before refuelling.
• Slowly open the fuel cap, when filling fuel, so that
possible overpressure is slowly released.
• Tighten the fuel cap carefully after fuelling.
• Always move the saw from the fuelling area before
starting.
• Never use waste oil. This
results in damage to the oil
pump, the bar and the
chain.
WARNING!
The catalytic converter muffler gets very hot
during and after use. This also applies during
idling. Be aware of the fire hazard, especially
when handling the saw near flammable
substances or vapours.
• It is important to use oil of
the right viscosity according
to the air temperature.
• In temperatures below 0oC
(32oF) some oils become
too viscous. This can
overload the oil pump and
result in damage to the oil
pump components.
Clean around the fuel cap.
Clean the fuel and chain oil
tanks regularly. The fuel filter
should be changed at least
once a year. Contamination in
the fuel tanks causes
malfunction. Make sure the
fuel is well mixed by shaking
the container before fuelling.
The volume of chain oil and
fuel tanks are adjusted to
each other. Therefore, always
fill chain oil and fuel at the
same time.
• Contact your servicing
dealer when choosing chain
oil.
Min 3 m
(10ft)
English – 27
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START AND STOP
Start and stop
Start
Grip the front handle with your
WARNING!
left hand and hold the saw
down by putting your right foot
in the rear handle. Pull the
starter handle with your right
hand and pull out the starter
cord slowly until the starter
pawls engage. Then pull
sharply.
• Never start the saw engine without the bar, chain and
clutch cover (chain brake) assembled - or else the
clutch can come loose and cause personal injuries.
• Always move the saw away from the fueling area
before starting.
• Place the saw on clear ground and make sure that the
chain is not contacting anything. Also, make sure that
you have a secure footing.
• Keep people and animals well away from the working
area.
Push in the choke control
immediately when the engine
ignites and make repeated
starting attemps. When the
engine starts, rapidly give full
throttle. Then the throttle latch
will disengage.
WARNING!
The catalytic converter muffler gets very hot
during and after use. This also applies during
idling. Be aware of the fire hazard, especially
when handling the saw near flammable
substances or vapours.
Cold engine
CHAIN BRAKE:
Disengage the chain brake by
pulling the hand guard
towards the front handle.
CAUTION! Do not release the
starter handle from fully pulled
out position as this can cause
damage on the saw.
H
IGNITION; CHOKE:
Stop
Set the choke control in choke
position. The stop contact will
automatically be set to start
position.
The engine is stopped by
switching off the ignition.
FAST IDLE:
H
Combined choke/fast idle is
received when the choke is
moved to choke position.
A
If the saw is fitted with a
decompression valve (A):
Press the valve to reduce the
pressure in the cylinder and
make starting easier. Always
use the decompression valve
when starting the saw. Once
the saw has started the valve
will automatically return to its
original setting.
H
Warm engine
Use the same procedure as
for starting cold engine but
without choke. Fast idle is
recived by first set the choke
control in choke position, and
then back again.
28– English
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MAINTENANCE
Conditions
Carburetor
• Before any adjustments are made the air filter should be
clean and the cylinder cowling fitted. Adjusting the carburetor
while a dirty air filter is in use will result in a leaner mixture
when the filter is finally cleaned. This can give rise to serious
engine damage.
Your Jonsered product has been designed and manufactured to
specifications that reduce harmful emissions.
After your unit has been run 8-10 tanks of fuel the engine has
broken in. To ensure that your unit is at peak performance and
producing the least amount of harmful emissions after break in,
have your authorized servicing dealer, who has a revolution
counter at his disposal, to adjust your carburetor for optimum
operating conditions.
• Carefully turn the L and H needle to the mid point.
• Do not attempt to adjust the needles beyond the stops as
damage can occur.
• Now start the saw according to the starting instructions and
run it warm for 10 minutes.
Functioning, Basic setting, Final setting
NOTE! If the chain rotates the T screw should be turned
counter-clockwise until the chain stops.
WARNING! Do not start the saw without the
bar, chain and clutch cover (chain brake)
assembled. If you do, the clutch might come
loose and cause severe injuries.
• Place the saw on a flat surface so that the bar points away
from you and so that the bar and chain do not come into
contact with the surface or other objects.
Low speed needle L
Operation
Turn the low speed needle L clockwise until the stop. If the
engine has bad acceleration or erratic idling, turn the L needle
counter-clockwise until good idling and acceleration.
• The carburetor governs the engine speed via the throttle. Air/
fuel are mixed in the carburetor. The air/fuel mixture is
adjustable. To take advantage of the engine’s optimal output
the setting must be correct.
NOTE! If the chain rotates in the idling position, turn the
idling speed screw counter-clockwise until the chain stops.
• The satisfactory operation of a catalytic converter
depends, among other factors, on the correct adjustment
of the carburettor. Follow carefully the instructions below.
• The setting of the carburetor means that the engine is adapted
to local conditions, for example, the climate, altitude, fuel and
the type of 2-stroke oil.
Final setting of the idling speed T
Adjust the idling speed with the screw T. If it is necessary to re-
adjust, first turn the idle speed adjusting screw T clockwise, until
the chain starts to rotate. Then turn, counter-clockwise until the
chain stops. A correctly adjusted idle speed setting occurs
when the engine runs smoothly in every position. It should also
be good margin to the rpm when the chain starts to rotate.
L
H
• The carburetor has three
adjustment possibilities:
T
L = Low speed jet.
H = High speed jet.
T = Adjustment screw for
idling.
Contact your servicing dealer, if the idle speed
setting cannot be adjusted so that the chain
stops. Do not use the saw until it has been
properly adjusted or repaired.
H
• The fuel quantity required in relation to the air flow, provided
by opening the throttle, is adjusted by the L and H-jets. If they
are screwed clockwise the air/fuel ratio becomes leaner (less
fuel) and if they are turned counter-clockwise the ratio
becomes richer (more fuel). A leaner mixture gives a higher
engine speed and a richer mixture give a lower engine speed.
• The T screw regulates the idling speed. If the screw T is
turned clockwise this gives a higher idling speed; counter-
clockwise a lower idling speed.
High speed needle H
The high speed needle H
influences the power of the
saw. A too lean adjusted high
speed needle H (high speed
needle H closed too much)
gives overrevs and damages
the engine. Turn the high
speed needle H counter-
clockwise until the stop. If the
engine runs roughly, turn the
high speed needle slowly the
minimum amount clockwise
until the engine runs smoothly.
WARNING! The catalytic converter muffler
gets very hot during and after use. This also
applies during idling. Be aware of the fire
hazard, especially when handling the saw
near flammable substances or vapours.
H
The high speed needle H is correctly set when the saw ”4-
cycles” a little. If the saw ”whistles” the setting is too lean. If
there is too much exhaust gas at the same time as the saw ”4-
cycles” much, the setting is too rich. Turn the high speed needle
H until the setting sounds correct. NOTE! For optimum setting
of the carburetor, contact a qualified servicing dealer who
has a revolution counter at his disposal.
Basic setting and running in
The carburetor is set to its basic setting when test run at the
factory. The basic setting is richer than the optimal setting and
should be kept during the machine‘s first working hours.
Thereafter the carburetor should be finely adjusted. Fine
adjustment should be carried out by a skilled technician.
NOTE! If the chain rotates while idling the T screw should be
adjusted counter-clockwise until it stops.
Correctly adjusted carburetor
Recommended idling speed: 2 700 rpm.
A correctly adjusted carburetor means that the saw accelerates
without hesitation and the saw 4-cycles a little at max speed.
Furthermore, the chain must not rotate at idling. A too lean
adjusted low speed needle L may cause starting difficulties and
bad acceleration. A too lean adjusted high speed needle H
gives lower power=less capacity, bad acceleration and/or
damage to the engine. A too rich adjustment of the two speed
needles L and H gives acceleration problems or too low working
speed.
Contact your servicing dealer, if the idle speed
setting cannot be adjusted so that the chain
stops. Do not use the saw until it has been
properly adjusted or repaired.
Fine adjustment
• When the saw has been ”run-in” the carburetor should be
finely adjusted. The fine adjustment should be carried out
by qualified person. First adjust the L-jet, then the idling
screw T and then the H-jet.
English – 29
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MAINTENANCE
Tensioning the recoil spring
Starter device
• Lift the starter cord up in the
notch on the starter pulley
and turn the starter pulley 2
turns clockwise.
WARNING!
• When the recoil spring is assembled in the starter
housing, it is in tensioned position and can when
treated carelessly, pop out and cause injuries.
• Always be careful, when changing the recoil spring or
the starter cord. Always wear safety goggles for eye
protection.
NOTE! Check that the
starter pulley can be turned
at least half a turn, when the
starter cord is entirely pulled
out.
Changing a broken or worn
starter cord
Changing the broken recoil spring
• Loosen the screws, that
hold the starter device
against the crankcase and
remove the starter device.
• Lift the starter pulley (see
"Changing a broken or worn
starter cord"). Bear in mind
that the return spring sits
under tension in a cassette.
• Dismantle the cassette with
the return spring from the
starter.
• Pull out the cord approx. 30
cm and lift it up into the
notch in the pulley. Zero-set
the recoil spring by letting
the pulley rotate slowly
backwards. Undo the screw
in the centre of the pulley
and remove the pulley.
• Lubricate the recoil spring
with thin oil. Assemble the
cassette with return spring
in the starter. Fit the starter
pulley and tension the return
spring.
• Insert and fasten a new
starter cord in the pulley.
Wind approx. 3 turns of the
starter cord on to the pulley.
Assemble the starter pulley
against the recoil spring, so
the end of the spring
engages to the pulley. Fit
the screw in the centre of
the pulley. Carry the starter
cord through the hole in the
starter housing and the
starter handle. Make a knot
on the starter cord.
Starter device assembly
• Assemble the starter
device, by pulling the starter
cord out first, then place the
starter against the
crankcase. Then slowly
release the starter cord so
that the pulley engages with
the pawls.
• Assemble and tighten the
screws, which hold the
starter.
30– English
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MAINTENANCE
Muffler
Air filter
The air filter must be regularly cleaned from dust and dirt in
order to avoid:
• Carburetor malfunctions
• Starting problems
• Engine power reduction
• Unnecessary wear on
the engine parts
• Abnormal fuel consumption
The muffler is designed in
order to reduce the noise level
and to direct the exhaust
gases away from the operator.
The exhaust gases are hot
and can contain sparks, which
may cause fire if directed
against dry and combustible
material. Some mufflers are
equipped with a special
screen.
Clean the air filter daily or
more often if the air is
exceptionally dusty in the
working area.
If your saw has this type of muffler, you should clean the screen
at least once a week. This is done with a wire brush.
• Disassemble the air filter by
removing the cylinder cover
and unscrew the filter.
When reassembling, make
sure that the filter is tight
against the filter holder.
Clean the filter by brushing
or shaking it.
CAUTION! The screen must be replaced, if damaged. The saw
will be overheated, if the screen is clogged. This results in
damage on the cylinder and the piston. Never use a saw with a
clogged or defective muffler.
A muffler fitted with a catalytic converter reduces the concent-
ration of hydrocarbons (HC), oxides of nitrogen (NO) and
aldehydes emitted with exhaust gases. However, it does not cut
down carbon monoxide (CO), which you cannot smell! Do not
run a chain saw in an unventilated area.
• A more thorough cleaning of
the filter is obtained by
washing it in water and
soap.
WARNING!
An air filter, which is used for
some time, cannot be cleaned
completely. Therefore it must
be replaced by a new one,
with regular intervals.
IMPORTANT! A damaged air
filter must always be
The catalytic converter muffler gets very hot
during and after use. This also applies during
idling. Be aware of the fire hazard, especially
when handling the saw near flammable
substances or vapours.
replaced.
A Jonsered chain saw can be equipped with different types of
airfilter according to working and weather conditions, season etc.
Needle bearing maintenance
Spark plug
A
The clutch drum is equipped
with one of the following chain
sprockets:
The spark plug condition is influenced by:
• An incorrect carburetor setting.
• Wrong fuel mixture (too much oil in the gasoline).
• A dirty air filter.
• Spur sprocket (A) (the chain
sprocket is welded on the
drum)
These factors cause deposits on the spark plug electrodes,
which may result in malfunction and starting difficulties.
• Rim sprocket (B)
(exchangeable)
B
Both versions have built-in
If the engine is low on
0,5 mm
needle bearing at the drive
shaft, whitch has to be
greased regularly (once a
week).
power, difficult to start or
runs poorly at idling speed,
always check the spark plug
first. If the spark plug is dirty,
clean it and check the
electrode gap. Readjust if
necessary. The correct gap is
0,5 mm (0,020"). The spark
plug should be replaced after
about a month in operation or
earlier if the electrodes are
badly eroded.
NOTE! Use only high
quality bearing grease.
IMPORTANT! Always use the
recommended spark plug
type. An incorrect spark plug
can severely damage the
piston/cylinder.
English – 31
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MAINTENANCE
Adjustment of the oil pump
Heated handles (2159W)
On the model 2159W both the
front handle and the rear
handle are equipped with
electrical heating coils. These
are supplied with electricity
from a built-in generator in the
electrical system.
The oil pump is adjustable.
Adjustments are made by
turning the screw using a
screwdriver or combination
+ –
spanner. The saw is supplied
1
from the factory with the screw
set to position 2. Turning the
screw clockwise will reduce
the oil flow and turning the
screw anti-clockwise will
increase the oil flow.
When the switch is pushed
upwards, the heat is switched
on. When it is pushed
downwards the heat is
switched off.
2
3
WARNING! The engine must not be running
when making adjustments.
Recommended settings:
Bar 13"-15": Position 1
Bar 18"-20": Position 3
Electrically heated carburetor (2159W)
Bar 15" -18": Position 2
This chain saw is, if it has model code W, equipped with
electrically heated carburetor. The electrical heating prevents
icing in the carburetor. A thermostat regulates heating so that
the carburetor always has the correct temperature.
Cooling system
Winter use
During winter time, snow and cold weather can cause running
problems, such as:
• Too low engine temperature.
• Icing of the air filter and freezing of the carburetor.
To obtain the lowest possible running temperature the saw is
equipped with a cooling system.
5
The cooling system
consists of:
4
1. Air intake on the starter
Therefore some special measures are required:
• Partly reduce the air inlet of the starter and by doing that
increase the engine temperature.
• Preheat the intake air to the carburetor by using the heat from
the cylinder.
unit.
3
2. Air guide plate.
3. Fan blades on the
flywheel.
4. Cooling fins on the
cylinder.
2
5. Cylinder cowling
Temperature 0°C (32°F) or
colder:
1
(supplies cold air over
the cylinder).
The cylinder cover is made so
it can be adjusted for running
in cold weather. Open the
winter flap so that preheated
air from the cylinder can pass
into the carburetor area
preventing for instance icing
of the air filter.
Clean the cooling system with a brush once a week, more often
in demanding conditions. A dirty or blocked cooling system
results in the saw overheating which causes damage to
piston and cylinder. NOTE! The cooling system of chain
saws that are fitted with a catalytic converter must be
cleaned daily. This is particularly important on saws with
catalytic converters, because the higher working tempera-
ture of the exhaust demands efficient cooling of the engine
and the catalytic converter unit.
For temperatures below -5°C
(23°F) and/or in snow
conditions there is also:
• a special cover (A) for the
starter housing,
Centrifugal cleaning ”Turbo”
Centrifugal cleaning means
the following:
H
All air to the carburetor is
carried through the starter.
Dirt and dust is centrifuged
These reduce the air flow and
prevent large amounts of
snow from being sucked into
the carburetor chamber.
NOTE! When the winter plug
is fitted the winter flap must be
open.
H
H
away by the cooling fan.
IMPORTANT! In order to
keep the function of the
centrifugal cleaning, a
continous maintenance and
care must be made.
IMPORTANT! If the temperature rises above -5°C (23°F) or 0°C
(32°F) respectively the saw MUST be restored to its normal
settings. Otherwise there is a risk of overheating, which can
cause severe engine damage.
• Clean the air intake to the
starter, the fan wings of the
flywheel, the space around
the flywheel, inlet pipe and
carburetor space.
IMPORTANT! Any maintenance other than that described in
this manual must be carried out by your servicing dealer.
32– English
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MAINTENANCE
Below you will find some general maintenance instructions.
If you have more questions, contact your servicing dealer.
Weekly maintenance
1
1. Check that the AV
elements are not soft or
torn.
2
Daily maintenance
2. Lubricate the clutch drum
bearing.
1. Check the throttle trigger
1
for smooth operation. If
3
any binding occurs, or if
engine fails to return to
idle, the saw should be
taken to your dealer,
before it is used again.
Also, be sure that the
3. File off burrs, if any, on
the sides of the bar.
4. Clean the spark plug and
check the gap.
0,5 mm
4
The correct gap is 0,5 mm
(0,020 inch).
2
trigger cannot be pulled
until the throttle trigger
lockout is depressed.
5. Check the starter and the
recoil spring. Clean the
fins on the flywheel.
5
2. Clean the chain brake
and check its function
according to the
6. Clean the cooling fins on
the cylinder.
instructions. Make sure
that the chain catcher is
undamaged. Otherwise
6
7. Clean or change the
screen in the muffler.
replace it immediately.
3
3. Clean or replace the air
filter as necessary. Check
for damage or holes.
8. Clean the carburetor body
and air box.
7
4. The bar should be turned
daily for more even wear.
Check the lubrication hole
in the bar, to be sure it is
4
8
5
not clogged. Clean the
bar groove, if the bar has
a sprocket tip, this should
be lubricated.
5. Check the function of the
oiler to be sure the bar
Monthly maintenance
and chain receive proper
lubrication.
6
1
1. Check the brake band on
the chain brake for wear.
6. Sharpen the chain and
check its tension and
condition. Check the drive
sprocket for wear.
2. Check the clutch centre,
clutch drum and clutch
spring for wear.
2
Replace if necessary.
3. Clean the outside of the
carburetor.
7. Check the starter and
3
7
starter cord for wear or
damage. Clean the air
intake slots on the starter
4. Change the fuel filter.
4
housing.
5. Clean the inside of the
fuel tank.
5
8
8. Check for any loose nuts
and screws and retighten
if necessary.
6. Clean the inside of the
oil tank.
9
9. Test the stop switch to be
7. Check all cables and
connections.
6
sure it shuts off the
engine.
8. Change the spark plug.
9. Change the air filter.
7
0,5 mm
8
9
English – 33
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TECHNICAL DATA
2159
Recommended original and replacement
bar and chain combinations
Engine
Cylinder volume, cu.in/cm3
Cylinder bore, inch/mm
Stroke, inch/mm
Idle speed, rpm
3,6/59
1,85/47
1,34/34
2 700
Following is a list of recommended cutting equipment for the
Jonsered chain saw model 2159. The combinations of powerhead,
bar and chain have been investigated in accordance with the
kickback and vibration requirements of ANSI B 175.1 – 1991.
The guide bar nose radius is determined by either the maximum
number of teeth in the nose sprocket or the corresponding
maximum nose radius of a solid bar.
Power, kW/ rpm
3,0/ 9 000
Ignition system
Manufacture
Type of ignition system
FHP
ET
Spark plug
Electrode gap, inch/mm
Champion RCJ 7Y
0,2/0,5
The following list is the chain saw manufacturers
recommendations. There may be other combinations available,
which will also achieve kickback reduction.
Fuel and lubrication
system
Manufacturer
Carburetor type
Fuel capacity, US pint/litre
Oil pump capacity at 8500 rpm,
ml/min
Oil capacity, US pint/litre
Type of oil pump
As we are listing the maximum guide bar nose radius, you may use
a guide bar with smaller nose radius than in our list. For guide bars
of the same length, all sprocket-nose guide bars of the same pitch
and having the same number of of sprocket teeth may be conside-
red to have equivalent kickback energy. A hard nose bar having
the same length and nose radius as a sprocket-nose bar may be
considered to have equivalent or less kickback energy than the
sprocket-nose bar.
Walbro
HDA 175
1,27/0,7
5-15
0,69/0,38
Automatic
Low kickback saw chain is a chain which has only met the kickback
performance requirements of ANSI B 175.1 safety requirements for
gasoline-powered chain saws when tested on the representative
sample of chain saws below 3.8 cu. in. specified in ANSI B 175.1.
We recommend that you as replacement use the listed chains or
"Low kickback saw chains" which are available at your dealer.
Weight
Without bar and chain, Lbs/kg
12,4/5,6
W: 12,6/5,7
CAT: 12,4/5,6
W CAT: 12,6/5,7
Guide bar
Saw chain
Chain/bar
Standard bar length,
inches/cm
Recommended bar lengths,
inches/cm
Usable cutting length,
inches/cm
Length Pitch
Max nose
radius
15"/38
inch
inch
13-20"/33-50
12-19"/31-48
13
15
16
18
0,325" 10T
0,325" 10T
0,325" 10T
0,325" 10T
Jonsered S25 or Oregon 20/21/22BP
Chain speed at max.
power, m/sec
Pitch, inch/mm
20
15
16
18
0,325" 10T
0,325" 10T
0,325" 10T
Total/Sabre 528PS, 520PS, 523PS
Jonsered S42 or Oregon 72/73/75LP
0,325"/8,25
3/8"/9,52
Thickness of drive link,
inch/mm
15
16
18
20
3/8"
3/8"
3/8"
3/8"
11T
11T
11T
11T
0,050"/1,3
0,058"/1,5
0,063"/1,6
Number of teeth on drive
sprocket
15
16
18
20
3/8"
3/8"
3/8"
3/8"
11T
11T
11T
11T
Total/Sabre 988PC, 980PC, 983PC
7
Note: For the chains above you are free to choose between
0,050", 0,058" and 0,063" gauge drive link for the corresponding
bar, see table below.
0,050" (1,3 mm)
0,058" (1,5 mm) S25/21BP S42/73LP
0,063" (1,6 mm) 22BP 75LP
20BP
72LP
520PS
528PS
523PS
980PC
988PC
983PC
´*xo)¶5Y¨
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EMISSION CONTROL WARRANTY STATEMENT
servicing dealer. If you have any questions regarding your
YOUR WARRANTY RIGHTS AND
warranty rights and responsibilities, you should contact your
nearest authorized servicing dealer or call Jonsered at
Sweden + 46 36 14 65 00.
OBLIGATIONS
The EPA (The US Environmental Protection Agency),
Environment Canada and Jonsered are pleased to explain
the emissions control system warranty on your 2000 and
later small nonroad engine. In U.S. and Canada, new small
nonroad engines must be designed, built and equipped to
meet the federal stringent anti-smog standards.
Jonsered must warrant the emission control system on your
small nonroad engine for the periods of time listed below
provided there has been no abuse, neglect or improper
maintenance of your unit. Your emission control system
includes Parts such as the carburetor and the ignition system.
Where a warrantable condition exists, Jonsered will repair
your small nonroad engine at no cost to you. Expenses
covered under warranty include diagnosis, parts and labor.
WARRANTY PERIOD
Any warranted part which is not scheduled for replacement
as required maintenance, or which is scheduled only for
regular inspection to the effect of ”repair or replace as
necessary” shall be warranted for 2 years. Any warranted
part which is scheduled for replacement as required
maintenance shall be warranted for the period of time up to
the first scheduled replacement point for that part.
DIAGNOSIS
The owner shall not be charged for diagnostic labor which
leads to the determination that a warranted part is defective,
if the diagnostic work is performed at an approved Jonsered
servicing dealer.
CONSEQUENTIAL DAMAGES
Jonsered may be liable for damages to other engine
components caused by the failure of a warranted part still
under warranty.
MANUFACTURER’S WARRANTY
COVERAGE
The 2000 and later small nonroad engines are warranted for
two years. If any emission related part on your engine (as
listed above) is defective, the part will be repaired or
replaced by Jonsered.
WHAT IS NOT COVERED
All failures caused by abuse, neglect or improper maintenance
are not covered.
ADD -ON OR MODIFIED PARTS
The use of add-on or modified parts can be grounds for
disallowing a warranty claim. Jonsered is not liable to cover
failures of warranted parts caused by the use of add-on or
modified parts.
OWNER’S WARRANTY
RESPONSIBILITIES
As the small nonroad engine owner, you are responsible for
the performance of the required maintenance listed in your
Operator’s Manual. Jonsered recommends that you retain all
receipts covering maintenance on your small nonroad
engine, but Jonsered cannot deny warranty solely for the
lack of receipts or for your failure to ensure the performance
of all scheduled maintenance.
As the small nonroad engine owner, you should, however, be
aware that Jonsered may deny you warranty coverage if your
small nonroad engine or a part of it has failed due to abuse,
neglect, improper maintenance, unapproved modifications or
the use of parts not made or approved by the original
equipment manufacturer.
HOW TO FILE A CLAIM
If you have any questions regarding your warranty rights
and responsibilities, you should contact your nearest
authorized servicing dealer or call Jonsered at Sweden
+ 46 36 14 65 00.
WHERE TO GET WARRANTY SERVICE
Warranty services or repairs shall be provided at all
Jonsered authorized servicing dealers.
You are responsible for presenting your small nonroad
engine to a Jonsered authorized servicing dealer as soon as
a problem exists.
The warranty repairs should be completed in a reasonable
amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and
responsibilities, you should contact your nearest authorized
servicing dealer or call Jonsered, at Sweden + 46 36 14 65 00.
MAINTENANCE, REPLACEMENT AND
REPAIR OF EMISSION-RELATED PARTS
Any Jonsered approved replacement part used in the
performance of any warranty maintenance or repairs on
emission-related parts, will be provided without charge to the
owner if the part is under warranty.
EMISSION CONTROL WARRANTY PARTS
LIST
WARRANTY COMMENCEMENT DATE
1. Carburetor and internal parts
2. Intake pipe, airfilter holder and carburetor bolts.
3. Airfilter and fuelfilter covered up to maintainance schedule.
4. Ignition System
The warranty period begins on the date small nonroad
engine is delivered.
LENGTH OF COVERAGE
a) Spark Plug, covered up to maintenance schedule
b) Ignition Module
Jonsered warrants to the initial owner and each subsequent
purchaser that the engine is free from defects in materials
and workmanship which cause the failure of a warranted part
for a period of two years.
MAINTENANCE STATEMENT
The owner is responsible for the performance of all required
maintenance, as defined in the operator’s manual.
WHAT IS COVERED
REPAIR OR REPLACEMENT OF PARTS
Repair or replacement of any warranted part will be perfor-
med at no charge to the owner at an approved Jonsered
English – 35
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2001W38
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