EPA II
EPA I
Please read the operator’s manual carefully and
make sure you understand the instructions
before using the machine.
Operator’s manual
CS 2152 CS 2153
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CONTENTS
Contents
KEY TO SYMBOLS
Symbols on the machine: ..............................................
Symbols in the operator’s manual: ................................
CONTENTS
Contents .......................................................................
INTRODUCTION
5
Dear customer! .............................................................
WHAT IS WHAT?
What is what on the chain saw? ...................................
GENERAL SAFETY PRECAUTIONS
Before using a new chain saw ......................................
Important .......................................................................
Always use common sense ..........................................
Personal protective equipment ......................................
Machine′s safety equipment .........................................
Cutting equipment ......................................................... 10
ASSEMBLY
Fitting the bar and chain ............................................... 16
FUEL HANDLING
Fuel ............................................................................... 17
Fueling .......................................................................... 18
Fuel safety .................................................................... 18
STARTING AND STOPPING
Starting and stopping .................................................... 19
WORKING TECHNIQUES
Before use: .................................................................... 21
General working instructions ........................................ 21
How to avoid kickback ................................................... 28
MAINTENANCE
General ......................................................................... 29
Carburetor adjustment .................................................. 29
Checking, maintaining and servicing chain saw safety
equipment ..................................................................... 30
Muffler ........................................................................... 32
Starter ........................................................................... 32
Air filter .......................................................................... 33
Spark plug ..................................................................... 34
Lubricating the bar tip sprocket ..................................... 34
Needle bearing lubrication ............................................ 34
Adjustment of the oil pump ........................................... 34
Cooling system ............................................................. 34
”Air Injection” centrifugal cleaning ................................. 35
Winter use ..................................................................... 35
Heated handles ............................................................. 35
Maintenance schedule .................................................. 36
TECHNICAL DATA
Technical data ............................................................... 37
Bar and chain combinations ......................................... 38
Saw chain filing and file gauges .................................... 38
FEDERAL EMISSION CONTROL WARRANTY
STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS ...... 39
AMERICAN STANDARD SAFETY PRECAUTIONS
Safety precautions for chain saw users ........................ 40
English – 3
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INTRODUCTION
Dear customer!
Congratulations on your choice to buy a Jonsered product!
Your purchase gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who
sells your machine is not one of our authorized dealers, ask for the address of your nearest servicing dealer.
It is our wish that you will be satisfied with your product and that it will be your companion for a long time. Think of this operator′s
manual as a valuable document.By following its′ content (using, service, maintenance etc) the life span and the second-hand value
of the machine can be extended. If you ever lend or sell this machine, make sure that the borrower or buyer gets the operator′s
manual, so they will also know how to properly maintain and use it.
Good luck on using your Jonsered machine!
Jonsered has a policy of continuous product development and therefore reserves the right to modify the design and appearance
of products without prior notice.
4 – English
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WHAT IS WHAT?
What is what on the chain saw?
1
2
3
4
5
6
7
8
9
Cylinder cover
16 Bumper spike
Front handle (Felling direction guide)
Front hand guard
17 Chain catcher
18 Clutch cover
Starter
19 Rear handle with right hand guard
20 Throttle control
Chain oil tank
Starter handle
21 Throttle lockout
Adjuster screws carburetor
Choke control/Start throttle lock
Rear handle
22 Decompression valve
23 Combination spanner
24 Chain tensioning screw
25 Operator’s manual (EPA)
26 Bar guard
10 Stop switch
11 Fuel tank
12 Muffler
27 Oil pump adjustment screw
28 Switch for heated handle (W)
29 Warning decal
13 Bar tip sprocket
14 Chain
15 Bar
30 Air purge
English – 5
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GENERAL SAFETY PRECAUTIONS
Before using a new chain saw
Important
•
Please read this manual carefully.
IMPORTANT!
•
Check that the cutting equipment is correctly fitted and
adjusted. See instructions under the heading Assembly.
The machine is only designed for cutting wood.
•
•
Refuel and start the chain saw. See the instructions under
the headings Fuel Handling and Starting and Stopping.
You should only use the saw with the bar and chain
combinations we recommend in the chapter Technical data.
Do not use the chain saw until sufficient chain oil has
reached the chain. See instructions under the heading
Lubricating cutting equipment.
Never use the machine if you are fatigued, while under the
influence of alcohol or drugs, medication or anything that
could affect your vision, alertness, coordination or
judgement.
•
Long-term exposure to noise can result in permanent
hearing impairment. So always use approved hearing
protection.
Wear personal protective equipment. See instructions
under the heading Personal protective equipment.
Do not modify this product or use it if it appears to have
been modified by others.
WARNING! Under no circumstances may the
design of the machine be modified without
the permission of the manufacturer. Always
Never use a machine that is faulty. Carry out the checks,
maintenance and service instructions described in this
manual.Some maintenance and service measures must be
carried out by trained and qualified specialists. See
instructions under the heading Maintenance.
!
use genuine accessories. Non-authorized
modifications and/or accessories can result
in serious personal injury or the death of the
operator or others.Your warranty may not
cover damage or liability caused by the use
of non-authorized accessories or
Never use any accessories other than those recommended
in this manual. See instructions under the headings Cutting
equipment and Technical data.
replacement parts.
CAUTION! Always wear protective glasses or a face visor to
reduce the risk of injury from thrown objects. A chain saw is
capable of throwing objects, such as wood chips, small
pieces of wood, etc, at great force.This can result in serious
injury, especially to the eyes.
WARNING! 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 the
contents of this operator’s manual.
!
WARNING! Running an engine in a confined
or badly ventilated area can result in death
due to asphyxiation or carbon monoxide
poisoning.
!
WARNING! The inside of the muffler contain
chemicals that may be carcinogenic. Avoid
contact with these elements in the event of a
!
damaged muffler.
WARNING! Faulty cutting equipment or the
wrong combination of bar and saw chain
increases the risk of kickback! Only use the
bar/saw chain combinations we recommend,
and follow the filing instructions. See
instructions under the heading Technical
data.
!
WARNING! Long term inhalation of the
engine’s exhaust fumes, chain oil mist and
dust from sawdust can represent a health
risk.
!
WARNING! The ignition system of this
machine produces an electromagnetic field
during operation.This field may under some
Always use common sense
!
circumstances interfere with pacemakers.To
reduce the risk of serious or fatal injury, we
recommend persons with pacemakers to
consult their physician and the pacemaker
manufacturer before operating this machine.
It is not possible to cover every conceivable situation you can
face when using a chain saw. Always exercise care and use
your common sense. Avoid all situations which you consider
to be beyond your capability. If you still feel uncertain about
operating procedures after reading these instructions, you
should consult an expert before continuing. Do not hesitate to
contact your dealer or us if you have any questions about the
use of the chain saw. We will willingly be of service and
provide you with advice as well as help you to use your chain
saw both efficiently and safely. Attend a training course in
6 – English
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GENERAL SAFETY PRECAUTIONS
chain saw usage if possible.Your dealer, forestry school or
Generally clothes should be close-fitting without restricting
your library can provide information about which training
materials and courses are available.
your freedom of movement.
IMPORTANT! Sparks can come from the muffler, the bar
and chain or other sources. Always have fire extinguishing
tools available if you should need them. Help prevent forest
fires.
′
Machine s safety equipment
In this section the machine’s safety features and their function
are explained. For inspection and maintenance see
instructions under the heading Checking, maintaining and
servicing chain saw safety equipment. See instructions under
the heading, What is what?, to find where these parts are
located on your machine.
The life span of the machine can be reduced and the risk of
accidents can increase if machine maintenance is not carried
out correctly and if service and/or repairs are not carried out
professionally. If you need further information please contact
your nearest servicing dealer.
Work is constantly in progress to improve the design and
technology - improvements that increase your safety and
efficiency. Visit your dealer regularly to see whether you can
benefit from new features that have been introduced.
Personal protective equipment
WARNING! Never use a machine with
defective safety components. Safety
equipment must be inspected and
maintained. See instructions under the
heading Checking, maintaining and
!
WARNING! Most chain saw accidents
happen when the chain touches the
operator.You must use approved personal
!
servicing chain saw safety equipment. If
your machine does not pass all the checks,
take the saw to a servicing dealer for repair.
protective equipment whenever you use the
machine. Personal protective equipment
cannot eliminate the risk of injury but it will
reduce the degree of injury if an accident
does happen. Ask your dealer for help in
choosing the right equipment.
Chain brake and front hand guard
Your chain saw is equipped with a chain brake that is
designed to stop the chain if you get a kickback. The chain
brake reduces the risk of accidents, but only you can prevent
them.
Take care when using your saw and make sure the kickback
zone of the bar never touches any object.
•
•
•
•
•
•
•
•
Approved protective helmet
Hearing protection
Protective goggles or a visor
Gloves with saw protection
Trousers with saw protection
Boots with saw protection, steel toe-cap and non-slip sole
Always have a first aid kit nearby.
Fire Extinguisher and Shovel
•
The chain brake (A) can either be activated manually (by
your left hand) or automatically by the inertia release
mechanism.
English – 7
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GENERAL SAFETY PRECAUTIONS
•
The brake is applied when the front hand guard (B) is
•
To release the chain brake pull the front hand guard
pushed forwards.
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).
•
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.
•
The front hand guard is not designed solely to activate the
chain brake. Another important feature is that it reduces
the risk of your left hand hitting the chain if you lose grip of
the front handle.
•
The way the chain brake is activated, either manually or
automatically by the inertia release mechanism, 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.
If you get a violent kickback while the kickback zone of the
bar is farthest away from you the chain brake is designed
to be activated by the inertia in the kickback direction.
•
The chain brake must be engaged when the chain saw is
started to prevent the saw chain from rotating.
If the kickback is less violent or the kickback zone of the
bar is closer to you the chain brake is designed to be
activated manually by the movement of your left hand.
•
Use the chain brake as a ”parking brake” when starting
and when moving over short distances, to reduce the risk
of moving chain accidentally hitting your leg or anyone or
anything close by.
•
In the felling position the left hand is in a position that
makes manual activation of the chain brake impossible.
With this type of grip, that is when the left hand is placed
so that it cannot affect the movement of the front hand
guard, the chain brake can only be activated by the inertia
action.
8 – English
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GENERAL SAFETY PRECAUTIONS
Will my hand always activate the chain
Chain catcher
brake during a kickback?
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 instructions under the heading Assembly) and
if the bar and chain are properly serviced and maintained (see
instructions under the heading General working instructions).
No. It takes a certain force to move the hand guard forward. If
your hand only lightly touches the front guard or slips over it,
the force may not be enough to trigger the chain brake.You
should also maintain a firm grip of the chain saw handles
while working.If you do and experience a kickback, your hand
may never leave the front handle and will not activate the
chain brake, or the chain brake will only activate after the saw
has swung around a considerable distance. In such
instances, the chain brake might not have enough time to stop
the saw chain before it touches you.
There are also certain positions in which your hand cannot
reach the front hand guard to activate the chain brake; for
example, when the saw chain is held in felling position.
Will my inetria activated chain brake
always activate during kickback in the
event of a kickback?
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.
No. First your brake must be in working order. Testing the
brake is simple, see instructions under the heading Checking,
maintaining and servicing chain saw safety equipment. We
recommend you do before you begin each work session.
Second the kickback must be strong enough to activate the
chain brake.If the chain brake is too sensitive it would activate
all the time which would be a nuisance.
Will my chain brake always protect me
from injury in the event of a kickback?
No. First, the chain brake must be in working order to provide
the intended protection. Second, it must be activated during
the kickback as described above to stop the saw chain.Third,
the chain brake may be activated but if the bar is too close to
you the brake might not have enough time to slow down and
stop the chain before the chain saw hits you.
Vibration damping system
Your machine is equipped with a vibration damping system
that is designed to reduce vibration and make operation
easier.
Only you and proper working technique can eliminate
kickback and its danger.
Throttle lockout
The machine′s vibration damping system reduces the transfer
of vibration between the engine unit/cutting equipment and
the machine′s handle unit. The body of the chain saw,
including the cutting equipment, is insulated from the handles
by vibration damping units.
The throttle lockout is designed to prevent accidental
operation of the throttle control. When you press the lock (A)
(i.e.when you grasp the handle) it releases the throttle control
(B). When you release the handle the throttle control and the
throttle lockout both move back to their original positions.This
arrangement means that the throttle control is automatically
locked at the idle setting.
English – 9
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GENERAL SAFETY PRECAUTIONS
Cutting hardwoods (most broadleaf trees) creates more
WARNING! Never use a saw without a
muffler, or with a damaged muffler. A
damaged muffler may substantially increase
the noise level and the fire hazard. Keep fire
fighting equipment handy. If a spark arrestor
screen is required in your area, never use
the saw without or with a broken spark
arrestor screen.
vibration than cutting softwoods (most conifers). Cutting with
cutting equipment that is blunt or faulty (wrong type or badly
sharpened) will increase the vibration level.
!
Cutting equipment
WARNING! Overexposure to vibration can
This section describes how to choose and maintain your
cutting equipment in order to:
lead to circulatory damage or nerve damage
in people who have impaired circulation.
!
Contact your doctor if you experience
symptoms of overexposure to vibration.
Such 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.These
symptoms may be increased in cold
temperatures.
•
•
Reduce the risk of kickback.
Reduce the risk of the saw chain breaking or jumping off
the bar.
•
•
•
Obtain optimal cutting performance.
Extend the life of cutting equipment.
Avoid increasing vibration levels.
General rules
Stop switch
•
Only use cutting equipment recommended by us!
Use the stop switch to switch off the engine.
See instructions under the heading Technical data.
•
Keep the chain’s cutting teeth properly sharpened!
Follow our instructions and use the recommended file
gauge. A damaged or badly sharpened chain increases
the risk of accidents.
Muffler
The muffler is designed to keep noise levels to a minimum and
to direct exhaust fumes away from the user.
•
Maintain the correct depth gauge setting! Follow our
instructions and use the recommended depth gauge
clearance. Too large a clearance increases the risk of
kickback.
WARNING! The exhaust fumes from the
engine are hot and may contain sparks
which can start a fire. Never start the
machine indoors or near combustible
material!
!
In areas with a hot, dry climate there is a high risk of fires.
These areas are sometimes subject to government rules
requiring among other things the muffler must be equipped
with an approved type of spark arrestor screen.
•
•
Keep the chain properly tensioned! If the chain is slack
it is more likely to jump off and lead to increased wear on
the bar, chain and drive sprocket.
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.
CAUTION! The muffler gets very hot during and after use.
This also applies during idling. Be aware of the fire hazard,
especially when working near flammable substances and/
or vapours.
10 – English
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GENERAL SAFETY PRECAUTIONS
•
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.
Cutting equipment designed to reduce
kickback
WARNING! Faulty cutting equipment or the
wrong combination of bar and saw chain
increases the risk of kickback! Only use the
bar/saw chain combinations we recommend,
and follow the filing instructions. See
instructions under the heading Technical
data.
!
•
Bar groove width (inches/mm).The groove in the bar must
match the width of the chain drive links.
The only way to avoid kickback is to make sure that the
kickback zone of the bar never touches anything.
By using cutting equipment with ”built-in” kickback reduction
and keeping the chain sharp and well-maintained you can
reduce the effects of kickback.
•
Chain oil hole and hole for chain tensioner. The bar must
be matched to the chain saw design.
Bar
The smaller the tip radius the lower the chance of kickback.
Chain
Chain
A chain is made up of a number of links, which are available
in standard and low-kickback versions.
•
Chain pitch (inches)
IMPORTANT! No saw chain design eliminates the danger of
kickback.
•
Drive link width (mm/inches)
Number of drive links.
WARNING! Any contact with a rotating saw
chain can cause extremely serious injuries.
!
Some terms that describe the bar and chain
•
To maintain the safety features of the cutting equipment, you
should replace a worn or damaged bar or chain with a bar and
chain combinations recommended by Jonsered. See
instructions under the heading Technical Data for a list of
replacement bar and chain combinations we recommend.
Bar
•
Length (inches/cm)
Sharpening your chain and adjusting
depth gauge setting
General information on sharpening cutting teeth
•
Number of teeth on bar tip sprocket (T).
•
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 chips will be very small. If the chain is very blunt it
will produce wood powder and no chips or shavings.
•
A sharp chain eats its way through the wood and produces
long, thick chips or shavings.
•
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.
English – 11
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GENERAL SAFETY PRECAUTIONS
•
The cutting part of the chain is called the cutter and
Sharpening cutting teeth
consists of a cutting tooth (A) and the depth gauge (B).
The cutters cutting depth is determined by the difference
in height between the two (depth gauge setting).
To sharpen cutting teeth you will need a round file and a file
gauge. See instructions under the heading Technical data for
information on the size of file and gauge that are
recommended for the chain fitted to your chain saw.
When you sharpen a cutting tooth there are four important
factors to remember.
1
Filing angle
•
•
Check that the chain is correctly tensioned. A slack chain
will move sideways, making it more difficult to sharpen
correctly.
2
Cutting angle
Always file cutting teeth from the inside face. Reduce the
pressure on the return stroke.File all the teeth on one side
first, then turn the chain saw and file the teeth on the other
side.
3
4
File position
Round file diameter
•
File all the teeth to the same length. When the length of
the cutting teeth is reduced to 0.16 inch (4 mm) the chain
is worn out and should be replaced.
It is very difficult to sharpen a chain correctly without the right
equipment. We recommend that you use our file gauge. This
will help you obtain the maximum kickback reduction and
cutting performance from your chain.
General advice on adjusting depth gauge setting
•
When you sharpen the cutting tooth (A) the depth gauge
setting (C) will decrease. To maintain optimal cutting
performance the depth gauge (B) has to be filed down to
achieve the recommended depth gauge setting. See
instructions under the heading Technical data to find the
correct depth gauge setting for your particular chain.
See instructions under the heading Technical data for
information about sharpening your chain.
WARNING! Departure from the sharpening
instructions considerably increases the risk
of kickback.
!
WARNING! The risk of kickback is increased
if the depth gauge setting is too large!
!
12 – English
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GENERAL SAFETY PRECAUTIONS
•
Loosen the bar nuts that hold the clutch cover/chain brake.
Use the combination spanner. Then tighten the bar nuts
by hand as tight as you can.
Adjustment of depth gauge setting
•
•
The cutting teeth should be newly sharpened before
adjusting the depth gauge setting. We recommend that
you adjust the depth gauge setting every third time you
sharpen the cutting teeth. NOTE! This recommendation
assumes that the length of the cutting teeth is not reduced
excessively.
•
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 does not sag from the
underside of the bar.
You will need a flat file and a depth gauge tool. We
recommend that you use our depth gauge tool to acheive
the correct depth gauge setting and bevel for the depth
gauge.
•
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 does not
sag from the underside of the bar.
•
Place the depth gauge tool over the chain. Detailed
information regarding the use of the depth gauge tool, will
be found on the package for the depth gauge tool. Use the
flat file to file off the tip of the depth gauge that protrudes
through the depth gauge tool. The depth gauge setting is
correct when you no longer feel resistance as you draw
the file along the depth gauge tool.
The position of the chain tensioning screw on our chain saws
varies from model to model. See instructions under the
heading What is what? to find out where it is on your model.
Lubricating cutting equipment
WARNING! Poor lubrication of cutting
equipment may cause the chain to snap,
which could lead to serious, even fatal
injuries.
Tensioning the chain
!
Chain oil
WARNING! A slack chain may jump off the
bar and cause serious or even fatal injury.
Chain oil must demonstrate good adhesion to the chain and
also maintain its flow characteristics regardless of whether it
is warm summer or cold winter weather.
!
The more you use a chain the longer it becomes. It is
therefore important to adjust the chain regularly to take up the
slack.
As a chain saw 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.
Check the chain tension every time you refuel. NOTE! A new
chain has a running-in period during which you should check
the tension more frequently.
Never use waste oil! Using waste oil can be dangerous to
you and damage the machine and environment.
Tension the chain as tightly as possible, but not so tight that
you cannot pull it round freely by hand.
IMPORTANT! When using vegetable based saw chain oil,
dismantle and clean the groove in the bar and saw chain
before long-term storage. Otherwise there is a risk of the
saw chain oil oxidizing, which will result in the saw chain
becoming stiff and the bar tip sprocket jamming.
English – 13
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GENERAL SAFETY PRECAUTIONS
•
Check that the bar tip sprocket turns freely and that the
lubricating hole in the tip sprocket is not blocked. Clean
and lubricate if necessary.
Filling with chain oil
•
All our chain saws have an automatic chain lubrication
system. On some models the oil flow is also adjustable.
•
The saw chain oil tank and the fuel tank are designed so
that the fuel runs out before the saw chain oil.
If the chain lubrication system is still not working after carrying
out the above checks and associated measures you should
contact your servicing dealer.
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 lean mixture may mean that the fuel lasts longer than
the oil) and that you also use the recommended cutting
equipment (a bar that is too long will use more chain oil).
Chain drive sprocket
The clutch drum is fitted with one of the following drive
sprockets:
Checking chain lubrication
•
Check the chain lubrication each time you refuel. See
instructions under the heading Lubricating the bar tip
sprocket.
A Spur sprocket (the chain sprocket is welded on the drum)
B Rim sprocket (replaceable)
Aim the tip of the bar at a light coloured surface about 20
cm (8 inches) away. After 1 minute running at 3/4 throttle
you should see a distinct line of oil on the light surface.
Regularly check the degree of wear on the drive sprocket.
Replace if wear is excessive. Replace the drive sprocket
whenever you replace the chain.
Needle bearing lubrication
Both versions of sprockets have a needle bearing on the drive
shaft, which has to be greased regularly (once a week).
CAUTION! Use only high quality bearing grease or engine oil.
If the chain lubrication is not working:
•
Check that the oil channel in the bar is not obstructed.
Clean if necessary.
Checking wear on cutting equipment
•
Check that the groove in the edge of the bar is clean.
Clean if necessary.
Check the chain daily for:
•
•
•
Visible cracks in rivets and links.
Whether the chain is stiff.
Whether rivets and links are badly worn.
Replace the saw chain if it exhibits any of the points above.
We recommend you compare the existing chain with a new
chain to decide how badly the existing chain is worn.
When the length of the cutting teeth has worn down to only
0.16 inch (4 mm) the chain must be replaced.
14 – English
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GENERAL SAFETY PRECAUTIONS
Bar
Check regularly:
•
Whether there are burrs on the edges of the bar. Remove
these with a file if necessary.
•
•
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 the underside of the bar tip this is due to
running with a slack chain.
•
To prolong the life of the bar you should turn it over daily.
WARNING! Most chain saw accidents
happen when the chain touches the
operator.
!
Wear personal protective equipment. See
instructions under the heading Personal
protective equipment.
Do not tackle any job that you feel you are
not adequately trained for. See instructions
under the headings Personal protective
equipment, How to avoid kickback, Cutting
equipment and General working
instructions.
Avoid situations where there is a risk of
kickback. See instructions under the
′
heading Machine s safety equipment.
Use the recommended protective equipment
and check its condition. See instructions
under the heading General working
instructions.
Check that all the chain saw safety features
are working. See instructions under the
headings General working instructions and
General safety precautions.
English – 15
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ASSEMBLY
Tension the chain by turning the chain tensioning screw
Fitting the bar and chain
clockwise using the combination spanner. The chain should
be tensioned until it does not sag from the underside of the
bar.
WARNING! Always wear gloves, when
working with the chain, in order to protect
your hands from injury.
!
Check that the chain brake is in disengaged position by
moving the front hand guard towards the front handle.
The chain is correctly tensioned when it does not sag from the
underside of the bar, but can still be turned easily by hand.
Hold up the bar tip and tighten the bar nuts with the
combination spanner.
Remove the bar nuts and remove the clutch cover (chain
brake). Take off the transportation ring (A).
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 ensures good cutting
performance and long life.
A
Fit the bar over the bar bolts. Place the bar in its rearmost
position. Place the chain over the drive sprocket locate it in
the groove on the bar. Begin on the top edge of the bar.
Note: If clutch cover is difficult to remove, replace bar nuts,
engage brake and rerelease (an audible click will be heard if
released properly).
Make sure that the edges of the cutting links are facing
forward on the top edge of the bar.
Fit the clutch cover and locate the chain adjuster pin in the
hole in the bar. Check that the drive links of the chain fit
correctly over the drive sprocket and that the chain is correctly
located in the groove in the bar. Tighten the bar nuts finger
tight.
16 – English
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FUEL HANDLING
Mixing ratio
Fuel
1:50 (2%) for all engines.
Note! The machine is equipped with a two-stroke engine and
must always be run using a mixture of gasoline and two-
stroke 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.
Gasoline, litre Two-stroke oil, litre
2% (1:50)
5
0,10
10
0,43/0,20
0,30
15
WARNING! Always ensure there is adequate
ventilation when handling fuel.
20
0,40
!
US gallon
US fl. oz.
2 1/2
1
2 1/2
5
6 1/2
Gasoline
12 7/8
Mixing
•
•
Use good quality unleaded gasoline.
CAUTION! Engines equipped with catalytic
converters must be run on unleaded fuel mixtures.
•
Leaded gasoline 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 gasoline can be used.
•
The lowest recommended octane grade is 87
((RON+MON)/2). If you run the engine on a lower octane
grade than 87 so-called knocking can occur. This gives
rise to a high engine temperature and increased bearing
load, which can result in serious engine damage.
•
•
Always mix the gasoline and oil in a clean container
intended for fuel.
•
When working with continuous high revs (e.g. limbing) a
higher octane is recommended.
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.
Environment fuel
JONSERED recommends the use of alkylate fuel or
environment fuel for four-stroke engines blended with two-
stroke oil as set out below. Note that carburetor adjustment
may be necessary when changing the type of fuel (see
instructions under the heading Carburetor).
•
Mix (shake) the fuel mixture thoroughly before filling the
machine’s fuel tank.
•
•
Do not mix more than one month’s supply of fuel at a time.
If the machine is not used for some time the fuel tank
should be emptied and cleaned.
Running-in
Chain oil
Avoid running at a too high speed for extended periods during
the first 10 hours.
•
We recommend the use of special oil (chain oil) with good
adhesion characteristics.
Two-stroke oil
•
•
•
For best results and performance use JONSERED two-
stroke engine oil, which is specially formulated for our air-
cooled two stroke-engines.
Never use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
Never use oil intended for four-stroke engines.
•
•
•
Never use waste oil. This results in damage to the oil
pump, the bar and the chain.
It is important to use oil of the right grade (suitable
viscosity range) to suit the air temperature.
In temperatures below 32°F (0°C) some oils become too
viscous. This can overload the oil pump and result in
damage to the oil pump components.
•
Contact your service agent when choosing chain oil.
English – 17
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FUEL HANDLING
•
Never start the machine:
Fueling
1
If you have spilled fuel or chain oil on the machine. Wipe
off the spillage and allow remaining fuel to evaporate.
2
3
If you have spilled fuel on yourself or your clothes, change
your clothes.Wash any part of your body that has come in
contact with fuel. Use soap and water.
WARNING!Taking the following precautions,
will lessen the risk of fire:
If the machine is leaking fuel. Check regularly for leaks
from the fuel cap and fuel lines.
!
Do not smoke and do not place any hot
objects in the vicinity of fuel.
WARNING! Never use a machine with visible
Always stop the engine and let it cool for a
few minutes before refuelling.
damage to the spark plug guard and ignition
cable. A risk of sparking arises, which can
cause a fire.
!
When refuelling, open the fuel cap slowly so
that any excess pressure is released gently.
Transport and storage
Tighten the fuel cap carefully after refuelling.
•
Always store the chain saw and fuel so that there is no risk
of leakages or fumes coming into contact with sparks or
naked flames from electrical equipment, electric motors,
relays/switches, boilers and the like.
Always move the machine away from the
refuelling area before starting.
Clean the area around the fuel cap. Clean the fuel and chain
oil tanks regularly. The fuel filter must be replaced at least
once a year. Contamination in the tanks causes malfunction.
Make sure the fuel is well mixed by shaking the container
before refuelling.The capacities of the chain oil tank and fuel
tank are carefully matched.You should therefore always fill
the chain oil tank and fuel tank at the same time.
•
•
Always store fuel in an approved container designed for
that purpose.
For longer periods of storage or for transport of the chain
saw, the fuel and chain oil tanks should be emptied. Ask
where you can dispose of waste fuel and chain oil at your
local gas station.
•
•
Ensure the machine is cleaned and that a complete
service is carried out before long-term storage.
The bar guard must always be fitted to the cutting
attachment when the machine is being transported or in
storage, in order to prevent accident contact with the
sharp chain. Even a non-moving chain can cause serious
cuts to yourself or persons you bump into with an exposed
chain.
Long-term storage
WARNING! Fuel and fuel vapor are highly
flammable.Take care when handling fuel and
chain oil. Be aware of the risks of fire,
explosion and those associated with
inhalation.
Empty the fuel/oil tanks in a well ventilated area.Store the fuel
in approved cans in a safe place. Fit the bar guard. Clean the
machine. See instructions under the heading Maintenance
schedule.
!
Fuel safety
•
Never refuel the machine while the engine is running.
•
Make sure there is plenty of ventilation when refuelling or
mixing fuel (gasoline and 2-stroke oil).
•
Move the machine at least 10 ft (3 m) from the refuelling
point before starting it.
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STARTING AND STOPPING
Warm engine
Starting and stopping
Use the same procedure as for starting a cold engine but
without setting the choke control in the choke position. The
correct choke/start throttle setting is obtained by moving the
choke control to the choke position and then pushing it in
again.
WARNING! Note the following before
starting:
!
The chain brake must be engaged when the
chain saw is started to reduce the chance of
contact with the moving chain during
starting.
H
Never start a chain saw unless the bar, chain
and all covers are fitted correctly. Otherwise
the clutch can come loose and cause
personal injuries.
Place the machine on firm ground. Make
sure you have a secure footing and that the
chain cannot touch anything.
Starting
Keep people and animals well away from the
working area.
Grip the front handle with your left hand. Hold the chain saw
on the ground by placing your right foot through the rear
handle. Pull the starter handle with your right hand and pull
out the starter cord slowly until you feel a resistance (as the
starter pawls engage) then pull firmly and rapidly.Never wrap
the starter cord around your hand
Cold engine
Starting: The chain brake should be activated when starting
the chain saw. Activate the chain brake by pushing the front
hand guard forwards.
CAUTION! Do not pull the starter cord all the way out and do
not let go of the starter handle when the cord is fully extended.
This can damage the machine.
Ignition; choke: Set the choke control in the choke position.
This should automatically set the stop switch to the start
position.
Push in the choke control as soon as the engine fires and
make repeated starting attempts. Immediately press and
release the throttle when the engine starts. That will
disengage the throttle latch.
H
As the chain brake is still activated the engine must return to
idling speed as soon as possible by disengaging the throttle
latch in order to avoid unnecessery wear on the clutch
assembly.
Start throttle: The correct choke/start throttle setting is
obtained by moving the control to the choke position.
Primer bulb: If the machine is fitted with an air purge (A):
Press the air purge repeatedly until fuel begins to fill the bulb.
The bulb need not be completely filled.
Decompression valve: If the machine is fitted with a
decompression valve (B): Press the valve to reduce the
pressure in the cylinder and make starting easier.You should
always use the decompression valve when starting the
machine. Once the machine has started the valve will
automatically return to its original setting.
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STARTING AND STOPPING
Note! Pull the front hand guard towards the front handle.The
•
Always hold the saw with both hands. The right hand
chain brake is now disengaged.Your saw is ready for use.
should be on the rear handle, and the left hand on the front
handle. All people, whether right or left handed, should
use this grip. Use a firm grip with thumbs and fingers
encircling the chain saw handles.
WARNING! Long term inhalation of the
engine’s exhaust fumes, chain oil mist and
dust from sawdust can represent a health
risk.
!
•
Never start a chain saw unless the bar, chain and all
covers are fitted correctly. See instructions under the
heading Assembly. Without a bar and chain attached to
the chain saw the clutch can come loose and cause
serious injury.
Stopping
H
The engine is stopped by pushing the stop switch to the stop
position.
•
The chain brake should be activated when starting. Se
instructions under the heading Start and stop.Do not drop
start. This method is very dangerous because you may
lose control of the saw.
•
•
Never start the machine indoors. Exhaust fumes can be
dangerous if inhaled.
Observe your surroundings and make sure that there is no
risk of people or animals coming into contact with the
cutting equipment.
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WORKING TECHNIQUES
Basic safety rules
Before use:
1
•
Look around you:
To ensure that people, animals or other things cannot
affect your control of the machine.
•
To make sure that none of the above might come within
reach of your saw or be injured by falling trees.
,
1
Check that the chain brake works correctly and is not
damaged.
2
3
Check that the rear right hand guard is not damaged.
Check that the throttle lockout works correctly and is not
damaged.
4
Check that the stop switch works correctly and is not
damaged.
CAUTION! 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.
5
6
Check that all handles are free from oil.
Check that the anti vibration system works and is not
damaged.
2
Do not use the machine in bad weather, such as dense
fog, heavy rain, strong wind, intense cold, etc. Working in
bad weather is tiring and often brings added risks, such as
icy ground, unpredictable felling direction, etc.
7
8
9
Check that the muffler is securely attached and not
damaged.
Check that all parts of the chain saw are tightened
correctly and that they are not damaged or missing.
3
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.
Check that the chain catcher is in place and not damaged.
10 Check the chain tension.
General working instructions
IMPORTANT!
This section describes basic safety rules for using a chain
saw. This information is never a substitute for professional
skills and experience. If you get into a situation where you
feel unsafe, stop and seek expert advice. Contact your
chain saw dealer, service agent or an experienced chain
saw user. Do not attempt any task that you are not sure you
can handle!
4
Make sure you can move and stand safely.Check the area
around you for possible obstacles (roots, rocks, branches,
ditches, etc.) in case you have to move suddenly. Take
great care when working on sloping ground.
Before using a chain saw you must understand the effects
of kickback and how to avoid them. See instructions under
the heading How to avoid kickback.
Before using a chain saw you must understand the
difference between cutting with the top and bottom edges of
the bar. See instructions under the headings How to avoid
kickback and Machine’s safety equipment.
Wear personal protective equipment. See instructions
under the heading Personal protective equipment.
5
Take great care when cutting a tree that is under tension.
A tree that is under tension may spring back to its normal
position before or after being cut. If you position yourself
incorrectly or make the cut in the wrong place the tree may
hit you or the machine and cause you to lose control. Both
situations can cause serious personal injury.
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WORKING TECHNIQUES
be a danger, you may be surprised and lose control of the
saw. Never saw stacked logs or branches without first
separating them. Only saw one log or one piece at a time.
Remove the cut pieces to keep your working area safe.
6
Before moving your chain saw switch off the engine and
lock the chain using the chain brake. Carry the chain saw
with the bar and chain pointing backwards. Fit a guard to
the bar before transporting the chain saw or carrying it for
any distance.
4
Never use the chain saw above shoulder height and
avoid cutting with the tip of the bar. Never use the
chain saw one-handed!
7
When you put the chain saw on the ground, lock the saw
chain using the chain brake and ensure you have a
constant view of the machine.Switch the engine off before
leaving your chain saw for any length of time.
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.
2
Always hold the chain saw firmly with your right hand on
the rear handle and your left hand on the front handle.
Wrap your fingers and thumbs around the handles.You
should use this grip whether you are right-handed or left-
handed.This grip minimizes the effect of kickback and lets
you keep the chain saw under control. Do not let go of
the handles!
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.
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.
6
7
Always use a fast cutting speed, i.e. full throttle.
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 with a pushing chain. The chain tries to
push the chain saw back towards the user.If the saw chain
is jamming, the saw may be pushed back at you.
Lack of concentration can lead to kickback if the kickback
zone of the bar accidentally touches a branch, nearby tree
or some other object.
Have control over the workpiece. If the pieces you intend
to cut are small and light, they can jam in the saw chain
and be thrown towards you. Even if this does not need to
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WORKING TECHNIQUES
8
Unless the user resists this pushing force there is a risk
There are five important factors you should
consider before making a cut:
that the chain saw will move so far backwards that only the
kickback zone of the bar is in contact with the tree, which
can lead to a kickback.
1
Make sure the cutting equipment will not jam in the cut.
2
Make sure the object you are cutting will not split.
Cutting with the bottom edge of the bar, i.e. from the top of
the object downwards, is known as cutting with a pulling
chain. In this case the chain saw pulls itself towards the
tree and the front edge of the chain saw body rests
naturally on the trunk when cutting. Cutting with a pulling
chain gives the operator better control over the chain saw
and the position of the kickback zone.
3
4
Make sure the chain will not strike the ground or any other
object during or after cutting.
Is there a risk of kickback?
9
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
instructions under the headings Cutting equipment and
Technical data.
5
Do the conditions and surrounding terrain affect how
safely you can stand and move about?
Basic cutting technique
Two factors decide whether the chain will jam or the object
that you are cutting will split: the first is how the object is
supported before and after cutting, and the second is whether
it is in tension.
WARNING! Never use a chain saw by holding
it with one hand. A chain saw is not safely
controlled with one hand. Always have a
secure, firm grip around the handles with
both hands.
!
In most cases you can avoid these problems by cutting in two
stages;from the top and from the bottom.You need to support
the object so that it will not trap the chain or split during
cutting.
General
•
•
Always use full throttle when cutting!
IMPORTANT! If the chain jams in the cut: stop the engine!
Don’t try to pull the chain saw free. If you do you may be
injured by the chain when the chain saw suddenly breaks
free. Use a lever to open up the cut and free the chain saw.
Reduce the speed to idle after every cut (running the
engine for too long at full throttle without any load, i.e.
without any resistance from the chain during cutting, can
lead to serious engine damage).
The following instructions describe how to handle the
common situations you are likely to encounter when using a
chain saw.
•
•
Cutting from above = Cutting with a pulling chain.
Cutting from below = Cutting with pushing chain.
Cutting with a pushing chain increases the risk of kickback.
See instructions under the heading How to avoid kickback.
Limbing
When limbing thick branches you should use the same
approach as for cutting.
Terms
Cutting = General term for cutting through wood.
Limbing = Cutting branches off a felled tree.
Cut difficult branches piece by piece.
2
1
Splitting = When the object you are cutting breaks off before
the cut is complete.
3
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WORKING TECHNIQUES
The log is supported at one end. There is a high risk that it
will split.
Cutting
WARNING! Never attempt to cut logs while
they are in a pile or when a couple of logs
are lying together. Such procedures
drastically increase the risk of kickback
which can result in a serious or fatal injury.
!
Start by cutting from below (about 1/3 of the way through).
Finish by cutting from above so that the two cuts meet.
If you have a pile of logs, each log you attempt to cut should
be removed from the pile, placed on a saw horse or runners
and cut individually.
Remove the cut pieces from the cutting area. By leaving them
in the cutting area, you increase the risk for inadvertently
getting a kickback, as well as increasing the risk of losing your
balance while working.
The log is supported at both ends. There is a high risk that
the chain will jam.
Start by cutting from above (about 1/3 of the way through).
The log is lying on the ground.There is little risk of the chain
jamming or the object splitting.However there is a risk that the
chain will touch the ground when you finish the cut.
Finish by cutting from below so that the two cuts meet.
Cut all the way through the log from above. Avoid letting the
chain touch the ground as you finish the cut. Maintain full
throttle but be prepared for what might happen.
Tree felling technique
IMPORTANT! It takes a lot of experience to fell a tree.
Inexperienced users of chain saws should not fell trees. Do
not attempt any task beyond your experience level!
If it is possible (can you turn the log?) stop cutting about 2/3
of the way through the log.
Safe distance
The safe distance between a tree that is to be felled and
anyone else working nearby is at least 2 1/2 tree lengths.
Make sure that no-one else is in this ”risk zone” before or
during felling.
Turn the log and finish the cut from the opposite side.
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WORKING TECHNIQUES
Felling direction
Clearing the trunk and preparing your retreat
The aim is to fell the tree in a position where you can limb and
cross-cut the log as easily as possible.You want it to fall in a
location where you can stand and move about safely.
Delimb the stem up to shoulder height.It is safer to work from
the top down and to have the tree between you and the saw.
Once you have decided which way you want the tree to fall
you must judge which way the tree would fall naturally.
Several factors affect this:
•
•
•
•
•
•
Lean of the tree
Bend
Wind direction
Arrangement of branches
Weight of snow
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 away from
the intended felling direction.
Obstacles within the reach of the tree: for example, other
trees, power lines, roads and buildings.
•
Look for signs of damage and rot in the stem, this makes
it more probably that the tree will break and start to fall
before you expect it to.
D
anger zone
Felling direction
Retreat path
D
anger zone
Danger zone
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.
Felling
WARNING! Unless you have special training
we advise you not to fell trees with a
diameter larger than the bar length of your
saw!
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.
!
The main point to avoid is letting the tree fall onto another tree.
It is very dangerous to remove a trapped tree and there is high
accident risk. See instructions under the heading Freeing a
tree that has fallen badly.
Felling is done using three cuts. First you make the directional
cuts, which consist of the top cut and the bottom cut, then you
finish with the felling cut. By placing these cuts correctly you
can control the felling direction very accurately.
Directional cuts
To make the directional cut you begin with the top cut. The
saw’s front handle (1) is used as felling direction guide. Aim
along the front handle toward a goal further forward in the
terrain, where you would like the tree to fall (2). Stand on the
right-hand side of the tree, behind the saw, and cut with a pull
stroke.
Next make the bottom cut so that it finishes exactly at the end
of the top cut.
IMPORTANT! 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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WORKING TECHNIQUES
The directional cuts should run 1/4 of the diameter through
the trunk and the angle between the top cut and bottom cut
should be 45°.
All control over the felling direction is lost if the felling hinge is
too narrow or non-existent, or if the directional cuts and felling
cut are badly placed.
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.
When the felling cut and directional cut are complete the tree
should start to fall by itself or with the aid of a felling wedge or
breaking bar.
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 on the pull stroke.
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 cuts with single cutting strokes. See instructions
under the heading Technical data section to find out which
lengths of bar are recommended for your saw.
Make the felling cut about 1.5-2 inches (3-5 cm) above the
bottom directional cut.
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.
Finish the felling cut parallel with the directional cut line so that
the distance between them is at least 1/10 of the trunk
diameter. The uncut section of the trunk is called the felling
hinge.
The felling hinge controls the direction that the tree falls in.
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WORKING TECHNIQUES
General advice:
Freeing a tree that has fallen badly
Position yourself so that you will be clear of the tree or branch
when the tension is released.
Freeing a ”trapped tree”
It is very dangerous to remove a trapped tree and there is high
accident risk.
Never try to fell the tree that is trapped.
Make one or more cuts at or near the point of maximum
tension. Make as many cuts of sufficient depth as necessary
to reduce the tension and make the tree or branch break at
the point of maximum tension.
Never cut straight through a tree or branch that is in
tension!
If you must cut across tree/limb, make two to three cuts, one
inch apart, one to two inches deep.
Never work in the risk zone of the hanging trapped tree.
Continue to cut deeper until tree/limb bends and tension is
released.
Cut tree/limb from outside the bend, after tension has been
released.
The safest method is to use a winch.
•
Tractor-mounted
•
Portable
Cutting trees and branches that are in tension
Preparations:Work out which side is in tension and where the
point of maximum tension is (i.e. where it would break if it was
bent even more).
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.
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WORKING TECHNIQUES
Limbing
How to avoid kickback
WARNING! A majority of kickback accidents
occur during limbing. Do not use the
WARNING! Kickback can happen very
suddenly and violently; kicking the chain
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.
!
!
kickback zone of the guide bar. Be extremely
cautious and avoid contacting the log, other
limbs or objects with the nose of the guide
bar. Be extremely cautious of limbs under
tension.They can spring back toward you
and cause loss of control resulting in injury.
Make sure that you can stand and move about safely.Work on
the left side of the trunk. Work as close as possible to the
chain saw for maximum control. If possible, let the weight of
the chain saw rest on the trunk.
What is kickback?
The word kickback is used to describe the sudden reaction
that causes the chain saw and bar to jump off an object when
the upper quadrant of the tip of the bar, known as the kickback
zone, touches an object.
Kickback always occurs in the cutting plane of the bar.
Normally the chain saw and bar are thrown backwards and
upwards towards the user. However, the chain 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.
Keep the trunk between you and the chain saw as you move
along the trunk.
Cutting the trunk into logs
See instructions under the heading Basic cutting technique.
Kickback only occurs if the kickback zone of the bar touches
an object.
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MAINTENANCE
•
The T-screw regulates the throttle setting at idle speed. If
the T-screw is turned clockwise this gives a higher idle
speed; turning it anti-clockwise gives a lower idle speed.
General
The user must only carry out the maintenance and service
work described in this manual.
Basic settings and running in
IMPORTANT! Any maintenance other than that described in
this manual must be carried out by your servicing dealer
(retailer).
The basic carburetor settings are adjusted during testing at
the factory. Avoid running at a too high speed for extended
periods during the first 10 hours.
CAUTION! If the chain rotates while idling the T-screw
must be turned anti-clockwise until the chain stops.
Carburetor adjustment
Rec. idle speed: 2700 rpm
Due to existing environmental and emissions legislation your
chain saw is equipped with movement limiters on the
carburetor adjuster screws. These limit the adjustment
possibilities to a maximum of a 1/2 turn.
Fine adjustment
When the machine has been ”run-in”the carburetor should be
finely adjusted. The fine adjustment should be carried out
by a qualified person. First adjust the L-jet, then the idling
screw T and then the H-jet.
H
L
1/2
1/2
Conditions
•
Before any adjustments are made the air filter should be
clean and the cylinder cover fitted. Adjusting the
carburetor while a dirty air filter is in use will result in a
leaner mixture next time the filter is cleaned.This can give
rise to serious engine damage.
Your Jonsered product has been designed and manufactured
to specifications that reduce harmful exhaust fumes.
•
•
•
Do not attempt to adjust the L and H jets beyond
either stop as this could cause damage.
Function
•
The carburetor governs the engine’s speed via the throttle
control. Air and fuel are mixed in the carburetor. The air/
fuel mixture is adjustable. Correct adjustment is essential
to get the best performance from the machine.
Now start the machine according to the starting
instructions and let it warm up for 10 minutes.
Place the machine 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.
•
The satisfactory operation of a catalytic converter
depends, among other factors, on the correct adjustment
of the carburetor. Carefully follow the instructions below,
using a tachometer as an aid.
Low speed jet L
Turn the low speed jet L clockwise until it stops. If the engine
accelerates poorly or idles unevenly, turn the low speed jet L
anticlockwise until good acceleration and idling are achieved.
•
•
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.
The carburetor has three adjustment controls:
- L = Low speed jet
Fine adjustment of the idling speedT
Adjust the idle speed with the T-screw. If it is necessary to re-
adjust, turn theT-screw clockwise while the engine is running,
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.
- H = High speed jet
- T = Idle adjustment screw
H
L
WARNING! Contact your servicing dealer, if
the idle speed setting cannot be adjusted so
that the chain stops at idle. Do not use the
chain saw until it has been properly adjusted
or repaired.
!
T
•
The L and H-jets are used to adjust the supply of fuel to
match the rate that air is admitted, which is controlled with
the throttle. If they are screwed clockwise the air/fuel ratio
becomes leaner (less fuel) and if they are turned anti-
clockwise the ratio becomes richer (more fuel). A lean
mixture gives a higher engine speed and a rich mixture
gives a lower engine speed.
English – 29
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MAINTENANCE
Checking the front hand guard
High speed jet H
At the factory the engine is adjusted at sea level. When
working at a high altitude or in different weather
conditions, temperatures and atmospheric humidity, it
may be necessary to make minor adjustments to the high
speed jet.
Make sure the front hand guard is not damaged and that there
are no visible defects such as cracks.
CAUTION! If the high speed jet is screwed in too far, it
may damage the piston/cylinder.
When test run at the factory, the high speed jet is set so that
the engine satisfies the applicable legal requirements at the
same time as achieving maximum performance. The
carburetor’s high speed jet is then locked using a limiter cap
in the fully screwed out position. The limiter cap limits the
potential to adjust the high speed jet to at most half a turn.
Move the front hand guard forwards and back to make sure it
moves freely and that it is securely anchored to the clutch
cover.
Correctly adjusted carburetor
When the carburetor is correctly adjusted the machine
accelerates without hesitation and the machine 4-cycles a
little at max. speed. It is also important that the chain does not
rotate at idle. If the L-jet is set too lean it may cause starting
difficulties and poor acceleration.If the H-jet is set too lean the
machine will have less power, poor acceleration and could
suffer damage to the engine.
Checking the inertia brake release
Checking,maintaining and servicing
chain saw safety equipment
With the engine turned off, hold the chain saw over a stump
or other firm object. Let go of the front handle so that the bar
drops towards the stump as the chain saw rotates around the
rear handle.
Note! All servicing and repair work on the machine requires
special training. This is especially true of the machine′s
safety equipment. If your machine fails any of the checks
described below we recommend you to contact our
servicing dealer.
Chain brake and front hand guard
Checking brake band wear
When the bar hits the stump the brake should be applied.
Brush off any wood dust, resin and dirt from the chain brake
and clutch drum. Dirt and wear can impair operation of the
brake.
Checking the brake trigger
Place the chain saw on firm ground and start it.Make sure the
chain does not touch the ground or any other object. See the
instructions under the heading Start and stop.
Regularly check that the brake band is at least 0.024 inch (0.6
mm) thick at its thinnest point.
30 – English
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MAINTENANCE
Grasp the chain saw firmly, wrapping your fingers and thumbs
around the handles.
Chain catcher
Check that the chain catcher is not damaged and is firmly
attached to the body of the chain saw.
Apply full throttle and activate the chain brake by tilting your
left wrist forward onto the front hand guard. Do not let go of
the front handle. The chain should stop immediately.
Right hand guard
Throttle lockout
Check that the right hand guard is not damaged and that there
are no visible defects, such as cracks.
•
•
•
•
Make sure the throttle control is locked at the idle setting
when the throttle lockout is released.
Vibration damping system
Press the throttle lockout and make sure it returns to its
original position when you release it.
Regularly check the vibration damping units for cracks or
deformation.
Check that the throttle control and throttle lockout move
freely and that the return springs work properly.
Make sure the vibration damping units are securely attached
to the engine unit and handle unit.
Stop switch
Start the chain 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
control is in the idle position you should check the
carburetor idle adjustment.
Start the engine and make sure the engine stops when you
move the stop switch to the stop setting.
English – 31
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MAINTENANCE
Muffler
Starter
WARNING! When the recoil spring is wound
up in the starter housing it is under tension
and can, if handled carelessly, pop out and
cause personal injury.
!
Never use a machine that has a faulty muffler.
Care must be exercised when replacing the
return spring or the starter cord. Wear
protective glasses and protective gloves.
Changing a broken or worn starter cord
Regularly check that the muffler is securely attached to the
machine.
•
Loosen the screws that hold the starter against the
crankcase and remove the starter.
Some mufflers are equipped with a special spark arrestor
screen. If your machine has this type of muffler, you should
clean the screen at least once a week.This is best done with
a wire brush. A blocked screen will cause the engine to
overheat and may lead to serious damage.
•
Pull out the cord approx. 30 cm (12 inches) and hook it
into the notch in the rim of the pulley. Release the recoil
spring by letting the pulley rotate slowly backwards.
Note! The screen must be replaced if it is damaged. If the
screen is blocked the machine will overheat and this will
cause damage to the cylinder and piston. Never use a
machine with a muffler that is in poor condition. Never use a
muffler if the spark arrestor screen is missing or
defective.
•
Undo the screw in the centre of the pulley and remove the
pulley. Insert and fasten a new starter cord to the pulley.
Wind approx. 3 turns of the starter cord onto the pulley.
Connect the pulley to the recoil spring so that the end of
the spring engages in the pulley.Fit the screw in the center
of the pulley. Insert the starter cord through the hole in the
starter housing and the starter handle. Make a secure
knot in the end of the starter cord.
The muffler is designed 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.
A muffler equipped with a catalytic converter significantly
reduces the amount of hydrocarbons (HC), nitrogen oxides
(NO) and aldehydes in the exhaust fumes. Carbon monoxide
(CO), which is poisonous and odorless, is not however
reduced! Consequently, never work in an enclosed or badly
ventilated area. Good air circulation should always prevail
when working in snowy hollows, ravines or in confined
conditions.
32 – English
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MAINTENANCE
Tensioning the recoil spring
Air filter
•
Hook the starter cord in the notch in the pulley and turn the
starter pulley about 2 turns clockwise.
Note! Check that the pulley can be turned an additional 1/
2 turn when the starter cord is pulled all the way out.
The air filter must be regularly cleaned to remove dust and dirt
in order to avoid:
•
•
•
•
•
•
Carburettor malfunctions
Starting problems
Loss of engine power
Unnecessary wear to engine parts
Excessive fuel consumption.
Remove the air filter after taking off the air filter cover.
When refitting make sure that the air filter seals tightly
against the filter holder. Clean the filter by brushing or
shaking it.
Changing a broken recoil spring
•
Lift up the starter pulley. See instructions under the
heading Changing a broken or worn starter cord.
Remember that the recoil spring is coiled under tension in
the starter housing.
•
•
Remove the cassette with the recoil spring from the
starter.
Lubricate the recoil spring with light oil. Fit the cassette
with recoil spring in the starter. Fit the starter pulley and
tension the recoil spring.
The filter can be cleaned more thoroughly by washing it in
water and detergent.
An air filter that has been in use for a long time cannot be
cleaned completely.The filter must therefore be replaced with
a new one at regular intervals. A damaged air filter must
always be replaced.
A JONSERED chain saw can be equipped with different types
of air filter according to working conditions, weather, season,
etc. Contact your dealer for advice.
Fitting the starter
•
To fit the starter, first pull out the starter cord and place the
starter in position against the crankcase. Then slowly
release the starter cord so that the pulley engages with
the pawls.
•
Fit and tighten the screws that hold the starter.
English – 33
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MAINTENANCE
Spark plug
Adjustment of the oil pump
The spark plug condition is influenced by:
The oil pump is adjustable. Adjustments are made by turning
the screw using a screwdriver or combination spanner. The
machine is supplied 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.
•
•
Incorrect carburetor adjustment.
An incorrect fuel mixture (too much or incorrect type of
oil).
•
A dirty air filter.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difficulties.
+ –
If the machine is low on power, difficult to start or runs poorly
at idle speed: always check the spark plug first before taking
any further action. If the spark plug is dirty, clean it and check
that the electrode gap is 0.020 inch (0.5 mm).The spark plug
should be replaced after about a month in operation or earlier
if necessary.
1
2
3
Recommended settings:
Bar 13"-15": Position 1
Bar 15"-18": Position 2
Bar 18"-20": Position 3
WARNING! The engine must be stopped
when making adjustments.
!
Note! Always use the recommended spark plug type! Use of
the wrong spark plug can damage the piston/cylinder. Check
that the spark plug is fitted with a suppressor.
Cooling system
Lubricating the bar tip sprocket
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
Lubricate the bar tip sprocket each time you refuel. Use the
special grease gun and a good quality bearing grease.
1
2
3
4
5
Air intake on the starter.
Air guide plate.
Fins on the flywheel.
Cooling fins on the cylinder.
Cylinder cover (directs cold air over the cylinder).
5
4
3
Needle bearing lubrication
2
The clutch drum has a needle bearing on the output shaft.
This needle bearing must be lubricated regularly (once a
week). CAUTION! Use only high quality bearing grease or
engine oil. See instructions under the heading Cutting
equipment.
1
Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
Note! The cooling system on a chain saw with catalytic
converter must be cleaned daily.This is particularly important
on chain saws with catalytic converters, because the higher
exhaust temperature requires efficient cooling of the engine
and the catalytic converter unit.
34 – English
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MAINTENANCE
•
a winter plug (B) for the air nozzle that is fitted as shown.
”Air Injection” centrifugal cleaning
Centrifugal cleaning means the following: All air to the
carburetor passes through the starter. Dirt and dust is pushed
out by the cooling fan.
H
H
These reduce the flow of cooling air and prevent large
amounts of snow from being sucked into the carburetor
space.
IMPORTANT! In order to maintain operation of the centrifugal
cleaning system it must be regularly maintained.Clean the air
intake to the starter, the fins on the flywheel, the space around
the flywheel, inlet pipe and carburetor compartment.
CAUTION! When the winter plug is fitted the winter flap must
be open!
IMPORTANT! If the temperature rises above -5°C (23°F) or
0°C (32°F) respectively the machine MUST be restored to
its normal set-up. Otherwise there is a risk of overheating,
which can cause severe engine damage.
Winter use
Running problems can occur when using the machine in the
cold and snowy conditions caused by:
Heated handles
•
•
Too low engine temperature.
Icing of the air filter and carburetor.
(CS 2152W, CS 2153W)
Special measures are therefore often required:
On models with the model code W, both the front handle bar
and the rear handle are equipped with electrical heating coils.
These are supplied with electricity from a generator built into
the chain saw.
•
Partly mask the air inlet on the starter to increase the
working temperature of the engine.
•
Preheat the intake air to the carburetor by using the heat
from the cylinder.
When the switch is pushed downwards, the heat is switched
on. When the switch is pushed upwards, the heat is switched
off.
°
°
Temperature 0 C (32 F) or colder:
The cylinder cover is designed so it can be adjusted for
running in cold weather. Twist the winter flap so that
preheated air from the cylinder can pass into the carburetor
space preventing icing of the air filter, etc.
Electrical carburetor heating
(CS 2152WH, CS 2153WH)
On models with the designation CARBURETOR HEATING
there is an electrically heated carburetor.Electrically powered
heating prevents ice formation in the carburetor. A thermostat
regulates the heating so that the carburetor always has the
right working temperature.
For temperatures below -5°C (23°F) and/or in snow
conditions there is also:
•
a special cover (A) for the starter housing
English – 35
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MAINTENANCE
Maintenance schedule
The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the
Maintenance section.
Daily maintenance
Weekly maintenance
Monthly maintenance
Check the brake band on the chain brake
for wear. Replace when less than 0.024
inch (0.6 mm) remains at the most worn
point.
On chain saws without a catalytic
converter, check the cooling system
weekly.
Clean the outside of the machine.
Check that the components of the throttle
control work safely. (Throttle lockout and
throttle control.)
Check the starter, starter cord and return Check the clutch centre, clutch drum and
spring.
clutch spring for wear.
Clean the chain brake and check that it
operates safely. Make sure that the chain Check that the vibration damping
Clean the spark plug. Check that the
electrode gap is 0.020 inch (0.5 mm).
catcher is undamaged, and replace it if
necessary.
elements are not damaged.
The bar should be turned daily for more
even wear. Check the lubrication hole in
the bar, to be sure it is not clogged. Clean Lubricate the clutch drum bearing.
the bar groove. If the bar has a sprocket
Clean the outside of the carburetor.
tip, this should be lubricated.
Check that the bar and chain are getting File off any burrs from the edges of the
Check fuel hose for cracks or other
damage. Change if necessary.
sufficient oil.
bar.
Check the saw chain with regard to visible
cracks in the rivets and links, whether the
saw chain is stiff or whether the rivets and
links are abnormally worn. Replace if
necessary.
Clean or replace the spark arrestor
screen on the muffler.
Empty the fuel tank and clean the inside.
Sharpen the chain and check its tension
and condition. Check the drive sprocket
for excessive wear and replace if
necessary.
Clean the carburetor compartment.
Empty the oil tank and clean the inside.
Clean the starter units air intake.
Clean the air filter. Replace if necessary. Check all cables and connections.
Check that nuts and screws are tight.
Check that the stop switch works
correctly.
Check that there are no fuel leaks from
the engine, tank or fuel lines.
On chain saws with a catalytic converter,
check the cooling system daily.
36 – English
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TECHNICAL DATA
Technical data
CS 2152
CS 2153
Engine
3
Cylinder displacement, cu.in/cm
Cylinder bore, inch/mm
Stroke, inch/mm
3,15/51,7
1,77/45
3,06/50,1
1,74/44,1
1,28/32,5
2700
1,28/32,5
2700
Idle speed, rpm
Power, kW/hp @ rpm
Ignition system
2,4/3,3 @ 9000
2,5/3,4 @ 9600
Manufacturer of ignition system
Type of ignition system
Spark plug
SEM
CD
SEM
CD
NGK BPMR 7A/ Champion RCJ 7Y NGK BPMR 7A/ Champion RCJ 7Y
Electrode gap, inch/mm
Fuel and lubrication system
Manufacturer of carburetor
Carburetor type
0,02/0,5
0,02/0,5
Zama
Zama
C3-EL32
1,06/0,5
5-12
C3-EL32
1,06/0,5
5-12
Fuel tank capacity, US pint/litre
Oil pump capacity at 9,000 rpm, ml/min
Oil tank capacity, US pint/litre
Type of oil pump
0,59/0,28
Automatic
0,59/0,28
Automatic
Weight
11/5,0: CS 2152, CS 2152 C
11,2/5,1: CS 2153, CS 2153 C
Chain saw without bar or chain, empty tanks, lb/kg 11,2/5,1:CS 2152 W, CS 2152 WH, 11,5/5,2: CS 2153 WH, CS 2153
CS 2152 CWH
CWH
Chain/bar
Standard bar length, inch/cm
Recommended bar lengths, inch/cm
Usable cutting length, inches/cm
Pitch, inch/mm
13"/33
13"/33
13-20"/33-50
12-19"/31-49
0,325/8,25
0,050/1,3
0,058/1,5
Rim/7
13-20"/33-50
12-19"/31-49
0,325/8,25
0,050/1,3
0,058/1,5
Rim/7
Thickness of drive links, inch/mm
Drive sprocket type/teeth
Chain speed at max. power, m/sec
17,3
18,5
English – 37
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TECHNICAL DATA
Recommended original and replacement bar and chain combinations
Following is a list of recommended cutting equipment for the Jonsered chain saw models CS 2152 and CS 2153.The combinations
of power head, bar and chain have been tested and found to be in accordance with the kickback and vibration requirements of
ANSI B 175.1–2000.
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 hard nose.
The following list is the chain saw manufacturers recommendations. There may be other combinations available, which will also
achieve kickback reduction.
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 sprocket teeth may be
considered 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.
Bar and chain combinations
Bar
Gauge, inch
0,050
Chain
Length, inch
Pitch, inch
0,325
0,325
0,325
0,325
0,325
0,325
0,325
0,325
0,325
0,325
Max. nose radius
Type
Drive link count
13
15
16
18
20
13
15
16
18
20
10T
10T
10T
10T
10T
10T
10T
10T
10T
12T
56
64
Jonsered H30 66
72
78
0,058
56
64
Jonsered H25 66
72
78
Note: For the saw chains above (if available) you are free to choose between 0,050" or 0,058" gauge drive links for the
corresponding bar, see the table below.
0,050"/1,3 mm
0,058"/1,5 mm
H30
-
-
H25
Saw chain filing and file gauges
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FEDERAL EMISSION CONTROL WARRANTY STATEMENT
rights and responsibilities, you should contact your nearest
authorized servicing dealer or call Jonsered, at Sweden +46-
36-146500.
YOUR WARRANTY RIGHTS AND
OBLIGATIONS
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.
The EPA (The US Environmental Protection Agency),
Environment Canada and Jonsered are pleased to explain
the emissions control system warranty on your 2001 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 period of time listed below provided
there has been no abuse, neglect or improper maintenance of
your unit.Your emmission control system includes Parts such
as the carburetor and the ignition system. Where a
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.
warrantable condition exists, Jonsered will repair your small
nonroad engine at no cost to you. Expenses covered under
warranty include diagnosis, parts and labor.
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
WHAT IS NOT COVERED
All failures caused by abuse, neglect or improper
maintenance are not covered.
The 2001 and later small nonroad engines are warranted for
two years. If any emission related part on you engine (as
listed above) is defective, the part will be repaired or replaced
by Jonsered.
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 SWARRANTY 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.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
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 +46-36-146500.
WHERE TO GET WARRANTY SERVICE
Warranty services or repairs shall be provided at all Jonsered
authorized servicing dealers.
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.
responsibilities, you should contact your nearest authorized
servicing dealer or call Jonsered, at Sweden +46-36-146500.
WARRANTY COMMENCEMENT DATE
EMISSION CONTROL WARRANTY PARTS
LIST
The warranty period begins on the date small nonroad engine
is delivered.
1
2
3
4
Carburetor and internal parts
LENGTH OF COVERAGE
Intake pipe, airfilter holder and carburetor bolts.
Airfilter and fuelfilter covered up to maintenance schedule.
Ignition System
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.
1
2
Spark Plug, covered up to maintenance schedule
Ignition Module
5
Muffler with catalytic converter
WHAT IS COVERED
MAINTENANCE STATEMENT
REPAIR OR REPLACEMENT OF PARTS Repair or
replacement of any warranted part will be performed at no
charge to the owner at an approved Jonsered servicing
dealer. If you have any questions regarding your warranty
The owner is responsible for the performance of all required
maintenance, as defined in the operator’s manual.
English – 39
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AMERICAN STANDARD SAFETY PRECAUTIONS
Other safety precautions
Safety precautions for chain saw
users
WARNING! Do not operate a chain saw with
(ANSI B 175.1-2000 Annex C)
one hand! Serious injury to the operator,
helpers, bystanders or any combination of
these persons may result from one-handed
operation. A chain saw is intended for two-
handed use.
!
Kickback safety precautions
WARNING! Kickback may occur when the
nose or tip of the guide bar touches an
object, or when the wood closes in and
pinches the saw chain in the cut.
Do not operate a chain saw when you are fatigued.
!
Use safety footwear; snug-fitting clothing, protective gloves,
and eye, hearing and head protection devices.
Tip contact in some cases may cause a
lightning fast reverse reaction, kicking the
guide bar up and back towards the operator.
Use caution when handling fuel. Move the chain saw at least
10 feet (3 m) from the fueling point before starting the engine.
Do not allow other persons to be near the chain saw when
starting or cutting with the chain saw. Keep bystanders and
animals out of the work area.
Pinching the saw chain along the top of the
guide bar may push the guide bar rapidly
back towards the operator.
Do not start cutting until you have a clear work area, secure
footing and a planned retreat path from the falling tree.
Either of these reactions may cause you to
lose control of the saw which could result in
serious personal injury.
Keep all parts of your body away from the saw chain when the
engine is running.
Do not rely exclusively upon the safety
devices built into your saw. As a chain saw
user, you should take several steps to keep
your cutting jobs free from accident or
injury.
Before you start the engine, make sure that the saw chain is
not contacting anything.
Carry the chain saw with the engine stopped, the guide bar
and saw chain to the rear, and the muffler away from your
body.
With a basic understanding of kickback, you can reduce or
eliminate the element of surprise. Sudden surprise
contributes to accidents.
Do not operate a chain saw that is damaged, improperly
adjusted, or not completely and securely assembled. Be sure
that the saw chain stops moving when the throttle control
trigger is released.
Keep a good firm grip on the saw with both hands, the right
hand on the rear handle, and the left hand on the front handle,
when the engine is running. Use a firm grip with thumbs and
fingers encircling the chain saw handles. A firm grip will help
you reduce kickback and maintain control of the saw. Don’t let
go.
Shut off the engine before setting the chain saw down.
Use extreme caution when cutting small size brush and
saplings because slender material may catch the saw chain
and be whipped toward you or pull you off balance.
Make sure that the area in which you are cutting is free from
obstacles. Do not let the nose of the guide bar contact a log,
branch, or any other obstacle which could be hit while you are
operating the saw.
When cutting a limb that is under tension be alert for
springback so that you will not be struck when the tension in
the wood fibers is released.
Keep handles dry, clean and free of oil or fuel mixture.
Operate the chain saw only in well-ventilated areas.
Cut at high engine speeds.
Do not overreach or cut above shoulder height.
Do not operate a chain saw in a tree unless you have been
specifically trained to do so.
Follow manufacturer’s sharpening and maintenance
instructions for the saw chain.
Do not operate a chain saw above shoulder height.
Only use replacement bars and chains specified by the
manufacturer or the equivalent.
All chain saw service, other than the items listed in the
operator’s/owner’s safety and maintenance instructions,
should be performed by competent chain saw service
personnel.(For example, if improper tools are used to remove
the flywheel or if an improper tool is used to hold the flywheel
in order to remove the clutch, structural damage to the
flywheel could occur and subsequently cause the flywheel to
burst.)
When transporting your chain saw, use the appropriate guide
bar guard.
Note: This Annex is intended primarily for the consumer or
occasional user.
40 – English
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
´®z+RI•¶55¨
´®z+RI•¶55¨
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
1150419-95
´®z+RI•¶55¨
´®z+RI•¶55¨
2007-05-14
Download from Www.Somanuals.com. All Manuals Search And Download.
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