CS 2172WH
CS 2172
CS 2166
Please read the oper ator’s manual carefully and make sure you understand the instructions before using the machine.
Operator ′′
′′
s manual
English
2
W
KEY T O SYMBOLS
Symbols on the mac hine:
ARNING! Chain saws can be
dangerous! Careless or incorrect use
can result in ser
operator or others.
Please read the operator’s manual
carefully and mak
the instructions before using the
machine.
Always wear:
• Approved protective helmet
• Approved hearing protection
• Protective goggles or a visor
This product is in accordance with
applicab
Noise emission to the environment
according to the European Comm
Directive. The machine’s emission is
specified in chapter Technical data and
on label.
Chain brake, activated (right)
Chain br
(left)
Decompression v alve: The valve is to
reduce the pressure in the cylinder and
e starting easier. You should always
mak
use the decompression valve when
starting the machine.
Ignition;
in the chok
automatically set the stop switch to the
start position.
Adjustment of the oil pump
If your machine bears this symbol it is
equipped with heated handles
Other symbols/decals on the mac hine refer to special
cer
tification requirements for certain markets.
ious or fatal injury to the
e sure you understand
le EC directives.
ake, not activated
choke:
e position. This should
Set the choke control
unity’s
.
Symbols in the operator’ s
man
ual:
Switch off the engine b y moving the
witch to the STOP position
stop s
before carrying out any checks or
maintenance.
Always wear approved protective
ves.
glo
Regular cleaning is required.
Visual check.
Protective goggles or a visor must be
rn.
wo
Refuelling.
Filling with oil and adjusting oil flow.
The chain brake must be engaged
when the chain sa
WARNING! Kickback ma y occur when
the nose or tip of the guide bar touches
an object, and cause a lightning f
reverse reaction, kicking the guide bar
up and towards the operator. Ma y cause
serious personal injury.
w is started.
ast
–
English
CONTENTS
Contents
KEY TO SYMBOLS
Symbols on the machine: ..................................... 2
Symbols in the operator’s manual: ....................... 2
CONTENTS
Contents
INTR
Dear Customer
WHA
What is what on the chain sa
GENERAL SAFETY PRECA
Bef
Important .............................................................. 6
Always use common sense .................................. 7
Personal protective equipment ............................. 7
Machine′s safety equipment ................................. 7
Cutting equipment ................................................ 10
ASSEMBL
Fitting the bar and chain
FUEL HANDLING
Fuel
ST
Star
W
Bef
General working instructions ................................ 21
How to avoid kickback .......................................... 27
MAINTENANCE
Gener
Carburettor adjustment ......................................... 28
Carburettor with movement limiters ...................... 28
Checking, maintaining and servicing chain saw
saf
Muffler .................................................................. 31
Starter .................................................................. 32
Air filter ................................................................. 33
Spark plug ............................................................ 33
Lubricating the bar tip sprocket ............................ 33
Needle bearing lubrication ................................... 33
Adjustment of the oil pump ................................... 34
Cooling system ..................................................... 34
”Turbo Air Cleaning” centrifugal cleaning .............. 34
Winter use ............................................................ 35
Heated handles .................................................... 35
Maintenance schedule ......................................... 36
TECHNICAL D
T
Bar and chain combinations ................................. 38
Saw chain filing and file gauges ........................... 38
EC-declaration of conformity ................................ 39
............................................................... 3
ODUCTION
, .................................................... 4
T IS WHAT?
w? ........................... 5
UTIONS
ore using a new chain saw .............................. 6
Y
....................................... 16
...................................................................... 17
ARTING AND STOPPING
ting and stopping ........................................... 19
ORKING TECHNIQUES
ore use: ........................................................... 21
al ................................................................. 28
ety equipment .................................................. 29
ATA
echnical data ...................................................... 37
English
–
3
4
ODUCTION
INTR
Dear Customer ,
Cong ratulations on your choice to buy a Jonsered product!
We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very
long time to come
whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the
address of your nearest service workshop.
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
ator
oper
the second-hand v
the operator
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
ance of products without prior notice.
appear
. The purchase of one of our products gives you access to professional help with repairs and service
′
s manual as a valuable document. By following its
alue of the machine can be extended. If you will sell this machine, make sure that the buyer will get
′
s manual.
′
content (using, service, maintenance etc) the life span and
–
English
1
Jonsered XXXX
XXXX
XXXXXXX
Jonsered
Huskvarna, SWEDEN
WHA T IS WHA
T?
JONSERED SERVICE
What is what on the c hain saw?
Cylinder cover
2 Front handle
3 Chain brake and front hand guard
4 Starter
5 Chain oil tank
6 Starter handle
7 Adjuster screws carburettor
8 Choke control/Start throttle lock
9 Rear handle
10 Stop switch (Ignition on/off switch.)
11 Fuel tank
12 Muffler
13 Bar tip sprocket
14 Chain
15 Bar
16 Spike bumper
17 Chain catcher
18 Clutch cover
19 Rear handle with right hand guard
20 Throttle control
21 Throttle lockout
22 Decompression valve
23 Combination spanner
24 Chain tensioning screw
25 Operator′s manual
26 Transport guard
27 Switch for heated handle (CS 2172WH)
28 Information and warning decal
29 Product and serial number plate
English –
5
!
!
!
6
•
W
W
GENERAL SAFETY PRECA UTIONS
W
W
W
W
W
W
Bef ore using a new chain saw
Please read this manual carefully.
• Check that the cutting equipment is correctly fitted and
adjusted.
See instructions under the heading
Assembly.
• Refuel and start the chain saw. See the instructions
under the headings Fuel Handling and Star
Stopping.
• Do not use the chain saw until sufficient chain oil has
reached the chain.
Lubricating cutting equipment.
• Long-term exposure to noise can result in permanent
ing impairment. So always use approv ed hearing
hear
protection.
!
!
!
!
!
See instructions under the heading
ARNING! Under no circumstances may
the design of the machine be modified
without the permission of the
manufacturer. Always use genuine
accessories. Non-authorized
modifications and/or accessories can
result in serious personal injury or the
death of the operator or others.
ARNING! 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.
ARNING! The inside of the muffler
contain chemicals that may be
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
ARNING! Long term inhalation of the
engine’s exhaust fumes, chain oil mist
and dust from sawdust can represent a
health risk.
ARNING! This machine produces an
electromagnetic field during operation.
This field may under some
circumstances interfere with active or
passive medical implants. To reduce the
risk of serious or fatal injury, we
recommend persons with medical
implants to consult their physician and
the medical implant manufacturer before
operating this machine.
ting and
ARNING! Never allow children to use or
be in the vicinity of the mac
machine is equipped with a springloaded stop switch and can be started by
low speed and force on the starter
handle, even small children under some
circumstances can produce the force
necessary to start the machine. This can
mean a risk of serious personal injury.
Therefore remove the spark plug cap
when the machine is not under close
supervision.
hine. As the
Impor tant
IMPOR TANT!
This chain saw for forest service is designed for forest
ork such as felling, delimbing and cutting.
w
You should only use the saw with the bar and chain
combinations we recommend in the chapter Technical
data.
Never use the machine if you are fatigued, while under
the influence of alcohol or dr
that could affect your vision, alertness, coordination or
judgement.
Wear personal protective equipment. See instructions
under the heading ”P
Do not modify this product or use it if it appears to have
been modified by others.
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.
Never use any accessories other than those
recommended in this man
the headings Cutting equipment and Technical data.
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.
ARNING! Running an engine in a
confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
ARNING! 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.
ugs, medication or anything
ersonal protective equipment”.
ual. See instructions under
–
English
GENERAL SAFETY PRECA UTIONS
!
Al
P
Y
W
ways use common sense
It is not possib le to cover every conceivab le situation you
ace when using a chain saw. Always exercise care
can f
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 chain saw usage if
possible. Your dealer, forestry school or your library can
provide information about which training materials and
courses are available.
Work is constantly in progress to improv e the design and
technology - impro
efficiency. Visit your dealer regularly to see whether you
can benefit from new features that have been introduced.
vements that increase your safety and
ersonal protective equipment
ARNING! Most chain saw accidents
happen when the c
!
operator. You must use approved
personal protective equipment whenever
you use the machine. Per sonal 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.
Alw ays wear:
• 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
Generally clothes should be close-fitting without
icting your freedom of movement.
restr
hain touches the
Mac hine
In this section the machine’ s safety features and their
function are e
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
ied out correctly and if service and/or repairs are not
carr
carried out professionally. If you need further information
please contact your nearest service workshop.
′′
′′
s safety equipment
xplained. For inspection and maintenance
WARNING! Never use a machine with
defective safety components. Safety
equipment must be inspected and
maintained. See instructions under the
heading Checking, maintaining and
servicing chain saw safety equipment. If
your machine does not pass all the
checks, take the saw to a servicing
dealer for repair.
Chain brake and fr ont hand guard
our chain saw is equipped with a chain brake that is
designed to stop the chain if y
brake reduces the risk of accidents, but only you can
prevent them.
Take care when using your saw and make sure the
kback zone of the bar never touches any object.
kic
• The chain brake (A) can either be activated manually
y your left hand) or automatically by the inertia
(b
release mechanism.
• The brake is applied when the front hand guard (B) is
pushed f
orwards.
ou get a kickback. The chain
B
T ANT! Sparks can come from the muffler, the bar
IMPOR
and chain or other sources. Always have fire
extinguishing tools available if you should need them.
Help prevent forest fires.
A
English
–
7
GENERAL SAFETY PRECAUTIONS
• This movement activates a spring-loaded mechanism
that tightens the brake band (C) around the engine
drive system (D) (clutch drum).
• The way the chain brake is activ ated, either manually
or automatically b
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 kickbac k zone of
the bar is f
designed to be activated by the inertia in the kickback
direction.
y the inertia release mechanism,
arthest away from you the chain brake is
• The front hand guard is not designed solely to activate
the chain br
reduces the risk of your left hand hitting the chain if
you lose grip of the front handle.
• The chain brake must be engaged when the chain
sa
• Use the chain brake as a ”parking brake” when
star
reduce the risk of moving chain accidentally hitting
your leg or anyone or anything close by.
• To release the chain brake pull the front hand guard
bac
ake. Another important feature is that it
w is started to prevent the saw chain from rotating.
ting and when moving over short distances, to
kwards, towards the front handle.
If the kickback is less violent or the kickback zone of
the bar is closer to y
activated manually by the movement of y our left hand.
• In the felling position the left hand is in a position that
es manual activation of the chain brake
mak
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.
ou the chain brake will be
• Kickback can be very sudden and violent. Most
kbacks are minor and do not always activate the
kic
chain brake. If this happens you should hold the chain
saw firmly and not let go.
8 – English
Will my hand always activate the chain brake during a kickback?
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 ma y 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.
GENERAL SAFETY PRECAUTIONS
!
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 inertia activated chain brake always activate during kickback in the event of a kickback?
No. First y our brak e m ust be in w orking order . Testing the
brake is simple, see instructions under the heading
Checking, maintaining and servicing chain saw safety
equipment. We recommend you do bef ore 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 ma y be activated b ut
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.
Only you and proper working technique can eliminate
kickback and its danger.
Throttle lockout
The throttle lockout is designed to prevent accidental
operation of the throttle control. When you press the lock
(A) (i.e. when you g rasp 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.
A
B
Chain catcher
The chain catcher is designed to catch the chain if it snaps
or jumps off. This should not happen if the chain is
properly tensioned (see instructions under the heading
Assembly) and if the bar and chain are properly serviced
and maintained (see instructions under the heading
General working instructions).
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.
Vibration damping system
Your machine is equipped with a vibration damping
system that is designed to minimize vibration and make
operation easier.
The machine
transfer of vibration between the engine unit/cutting
equipment and the machine
chain saw, including the cutting equipment, is insulated
from the handles by vibration damping units.
Cutting hardwoods (most broadleaf trees) creates more
vibr
with cutting equipment that is blunt or faulty (wrong type
or badly sharpened) will increase the vibration level.
′s vibration damping system reduces the
′s handle unit. The body of the
ation than cutting softwoods (most conifers). Cutting
WARNING! Overexposure to vibration
can lead to circulatory damage or nerve
damage in people who have impaired
circulation. Contact your doctor if you
experience symptoms of overexposure
to vibration. 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.
English – 9
GENERAL SAFETY PRECAUTIONS
!
Stop switch
Use the stop switch to switch off the engine.
Muffler
The muffler is designed to keep noise levels to a minim um
and to direct exhaust fumes away from the user.
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 go
requiring among other things the muffler must be
equipped with an approved type of spark arrestor mesh.
vernment rules
• Obtain optimal cutting performance.
• Extend the life of cutting equipment.
• Avoid increasing vibration levels.
General rules
• Only use cutting equipment recommended by us!
See instructions under the heading Technical data.
• Keep the chain’s cutting teeth properly
sharpened! Follow our instructions and use the
recommended file gauge.
sharpened chain increases the risk of accidents.
• Maintain the correct depth gauge setting! Follow
our instructions and use the recommended depth
gauge clearance.
the risk of kickback.
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.
A damaged or badly
Too large a clearance increases
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.
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.
Cutting equipment
This section describes how to choose and maintain your
cutting equipment in order to:
• Reduce the risk of kickback.
• Reduce the risk of the saw chain breaking or jumping
off the bar
10 – English
.
Keep cutting equipment well lubricated and
•
properly maintained!
more likely to break and lead to increased wear on the
bar, chain and drive sprocket.
A poorly lubricated chain is
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.
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 wellmaintained you can reduce the effects of kickback.
Bar
The smaller the tip radius the lower the chance of
kickback.
GENERAL SAFETY PRECAUTIONS
Chain
A chain is made up of a number of links, which are
available in standard and low-kickback versions.
IMPORTANT! No saw chain design eliminates the
danger of kickback.
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)
• Number of teeth on bar tip sprocket (T).
• 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.
Chain
• Chain pitch (inches)
• Drive link width (mm/inches)
• Number of drive links.
Sharpening your chain and adjusting depth gauge setting
General information on sharpening cutting teeth
• Never use a blunt chain. When the chain is blunt you
have to exert more pressure to force the bar through
the wood and the 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, thic
• The cutting part of the chain is called the cutter and
consists of a cutting tooth (A) and the depth gauge
The cutters cutting depth is determined by the
(B).
difference in height between the two (depth gauge
setting).
k chips or shavings.
A
• Number of drive links. The number of drive links is
mined by the length of the bar, the chain pitch
deter
and the number of teeth on the bar tip sprocket.
• Bar groove width (inches/mm). The groove in the bar
ust match the width of the chain drive links.
m
• Chain oil hole and hole for chain tensioner. The bar
must be matched to the chain saw design.
B
When you sharpen a cutting tooth there are four important
actors to remember.
f
1 Filing angle
2 Cutting angle
3 File position
English – 11
GENERAL SAFETY PRECAUTIONS
!
4 Round file diameter
It is very difficult to sharpen a chain correctly without the
ight equipment. We recommend that you use our file
r
gauge. This will help you obtain the maximum kickback
reduction and cutting performance from your chain.
See instructions under the heading Technical data for
ormation about sharpening your chain.
inf
WARNING! Departure from the
sharpening instructions considerably
!
increases the risk of kickback.
Sharpening cutting teeth
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.
• File all the teeth to the same length. When the length
of the cutting teeth is reduced to 4 mm (5/32") the
chain is w
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.
Adjustment of depth gauge setting
orn out and should be replaced.
min 4 mm
(5/32")
A
WARNING! The risk of kickback is
increased if the depth gauge setting is
too large!
C
B
• Check that the chain is correctly tensioned. A slack
chain will mo
sharpen correctly.
• Always file cutting teeth from the inside face. Reduce
the pressure on the retur
one side first, then turn the chain saw over and file the
teeth on the other side.
12 – English
ve sideways, making it more difficult to
n stroke. File all the teeth on
• 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.
• You will need a flat file and a depth gauge tool. We
recommend that y
acheive the correct depth gauge setting and bevel f or
the depth gauge.
ou use our depth gauge tool to
GENERAL SAFETY PRECAUTIONS
!
• 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.
Tensioning the chain
WARNING! A slack chain may jump off
and cause serious or even fatal injury.
!
The more you use a chain the longer it becomes. It is
therefore important to adjust the chain regularly to take up
the slack.
Check the chain tension every time you refuel. NOTE! A
w chain has a running-in period during which you
ne
should check the tension more frequently.
Tension the chain as tightly as possible, but not so tight
ou cannot pull it round freely by hand.
that y
• Use the combination spanner to tighten the bar nuts
while lifting the tip of the bar at the same time
that you can pull the chain round freely by hand and
that it does not sag from the underside of the bar.
The position of the chain tensioning screw on our chain
ws varies from model to model. See instructions under
sa
the heading What is what? to find out where it is on your
model.
. Check
Lubricating cutting equipment
WARNING! Poor lubrication of cutting
equipment may cause the chain to snap,
which could lead to serious, even fatal
injuries.
Chain oil
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.
As a chain saw manufacturer we have developed an
optimal chain oil which, with its v
biodegradable. 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.
Never use waste oil! Using waste oil can be dangerous
to you and damage the machine and environment.
egetable oil base, is also
• Undo the bar nuts that hold the clutch cover/chain
ake. Use the combination spanner. Then tighten the
br
bar nuts by hand as tight as you can.
• Raise the tip of the bar and stretch the chain by
tightening the chain tensioning scre
combination spanner. Tighten the chain until it does
not sag from the underside of the bar.
w using the
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.
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 r
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).
uns out before the saw chain oil.
English – 13
GENERAL SAFETY PRECAUTIONS
Checking chain lubrication
• Check the chain lubrication each time you refuel. See
instructions under the heading Lubricating the bar tip
sprocket.
Aim the tip of the bar at a light coloured surface about
20 cm (8 inches) a
throttle you should see a distinct line of oil on the light
surface.
If the chain lubrication is not working:
• Check that the oil channel in the bar is not obstructed.
Clean if necessar
• Check that the groove in the edge of the bar is clean.
Clean if necessar
way. After 1 minute running at 3/4
y.
y.
Chain drive sprocket
The clutch drum is fitted with one of the following drive
sprockets:
A Spur sprocket (the chain sprocket is welded on the
drum)
B Rim sprocket (replaceable)
A B
Regularly check the degree of wear on the drive sprocket.
Replace if w
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). NOTE! Use a high-quality bearing grease or
engine oil.
ear is excessive. Replace the drive sprocket
• Check that the bar tip sprocket turns freely and that
If the chain lubrication system is still not working after
carr
you should contact your service agent.
14 – English
icating hole in the tip sprocket is not blocked.
the lubr
Clean and lubricate if necessary.
ying out the above checks and associated measures
Checking wear on cutting equipment
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
abo
ve.
We recommend you compare the existing chain with a
new chain to decide how badly the existing chain is worn.
File all the teeth to the same length. When the length of
the cutting teeth is reduced to 4 mm (5/32") the chain is
orn out and should be replaced.
w
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