Dolmar PS-3410 TH TLC Instruction Manual

Owner’s and Safety Manual
for Gasoline Chain Saws (page 2 - 37)
Manuel d’emploi et de sécurité
de tronçonneuses thermiques (page 38 - 73)
WARNING!
Read and understand this Manual. Always follow safety precautions in the Owner’s and Safety Manual.
Improper use can cause serious injury!
The engine exhaust from this product contains chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm. Preserve this Manual carefully!
ATTENTION!
Suivez toujours les conseils de sécurité du présent manuel d’emploi et de sécurité. Une utilisation
incorrecte de la tronçonneuse peut entraîner des blessures graves! Conservez avec soin ce manuel!
Les gaz d’échappement émis par ce produit contiennent des produits chimiques connus par l’Etat de
Californie pour provoquer le cancer, des défauts de naissance ou autres dommages de reproduction.
Lisez et comprenez ce manuel.
PS-3410 TH
PS-3410 TH (TLC)

2
EMISSIONS COMPONENT DEFECT WARRANTY COVERAGE
DOLMAR warrant to the initial retail purchaser and each subsequent owner, that this utility equipment was designed, built, and
equipped to conform at the time of initial sale to all applicable regulations of the U.S. Environmental Protection Agency (EPA), and
that the engine is free of defects in materials and workmanship which would cause this engine to fail to conform with EPA regulations
during its warranty period.
For the components listed under PARTS COVERED, the service dealer authorized by DOLMAR will, at no cost to you, make the
necessary diagnosis, repair, or replacement necessary to ensure that the engine complies with applicable U.S. EPA regulations.
EMISSION COMPONENT DEFECT WARRANTY PERIOD
The warranty period for this engine begins on the date of sale to the initial purchaser and continues for a period of 2 years.
PARTS COVERED
Listed below are the parts covered by the Emission Components Defect Warranty. Some of the parts listed below may require sched-
uled maintenance and are warranted up to the rst scheduled replacement point for that part.
Fuel Metering System Ignition System
Carburetor and internal parts Spark plug
Fuel lter, if applicable Flywheel Magneto
Throttle stopper, if applicable Ignition Coil
Choke System, if applicable
Air Induction System Miscellaneous Items Used in Above Systems
Pre lter, if exist Fuel hoses, clamps and sealing gaskets
Air lter, Air lter case, Intake manifold
OBTAINING WARRANTY SERVICE
To obtain warranty service, take your engine to the nearest DOLMAR service Center authorized by DOLMAR. Bring your sales re-
ceipts indicating date of purchase for this engine. The dealer of service authorized by DOLMAR will perform the necessary repairs or
adjustments within a reasonable amount of time and furnish you with a copy of the repair order. All parts and accessories replaced
under this warranty become the property of DOLMAR.
WHAT IS NOT COVERED
• Conditions resulting from tampering, misuse, improper adjustment (unless they were made by the service dealer authorized by
DOLMAR during a warranty repair), alteration, accident, failure to use the recommended fuel and oil, or not performing required
maintenance services.
• The replacement parts used for required maintenance services.
• Consequential damages such as loss of time, inconvenience, loss of use of the engine or equipment, etc.
• Diagnosis and inspection charges that do not result in warranty-eligible service being performed.
• Any non-authorized replacement part, or malfunction of authorized parts due to use of non-authorized parts.
OWNER’S WARRANTY RESPONSIBILITIES
As the engine owner, you are responsible for the performance of the required maintenance listed in your owner’s manual.
DOLMAR recommends that you retain all receipts covering maintenance on your engine, but DOLMAR cannot deny warranty solely
for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance. As the engine owner, you should
however be aware that DOLMAR may deny warranty coverage if your engine or a part has failed due to abuse, neglect, improper
maintenance or unapproved modications.
You are responsible for presenting your engine to the nearest service dealer authorized by DOLMAR when a problem exists.
If you have any questions regarding your warranty rights and responsibilities, you should contact the DOLMAR Warranty service
Department at 1-888-OPE-PART for the information.
THINGS YOU SHOULD KNOW ABOUT THE EMISSION CONTROL SYSTEM WARRANTY:
MAINTENANCE AND REPAIRS
You are responsible for the proper maintenance of the engine. You should keep all receipts and maintenance records covering the
performance of regular maintenance in the event questions arise. These receipts and maintenance records should be transferred
to each subsequent owner of the engine. DOLMAR reserves the right to deny warranty coverage if the engine has not been prop-
erly maintained. Warranty claims will not be denied, however, solely because of the lack of required maintenance or failure to keep
maintenance records.
MAINTENANCE, REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED BY
ANY REPAIR ESTABLISHMENT OR INDIVIDUAL; HOWEVER, WARRANTY REPAIRS MUST BE PERFORMED BY A SERVICE
DEALER AUTHORIZED BY DOLMAR. THE USE OF PARTS THAT ARE NOT EQUIVALENT IN PERFORMANCE AND DURABIL-
ITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFECTIVENESS OF THE EMISSION CONTROL SYSTEM AND MAY HAVE A
BEARING ON THE OUTCOME OF A WARRANTY CLAIM.
If other than the parts authorized by DOLMAR are used for maintenance replacements or for the repair of components affecting emis-
sion control, you should assure yourself that such parts are warranted by their manufacturer to be equivalent to the parts authorized
by DOLMAR in their performance and durability.
HOW TO MAKE A CLAIM
All repair qualifying under this limited warranty must be performed by a service dealer authorized by DOLMAR. In the event that any
emission-related part is found to be defective during the warranty period, you shall notify DOLMAR Warranty service Department at
1-888-OPE-PART and you will be advised of the appropriate warranty service dealer or service providers
where the warranty repair can be performed.

3
The PS-3410 TH will be delivered in a protective cardboard box to prevent transport damage. Cardboard is a basic
raw material and is consequently reuseable or suitable for recycling (waste paper recycling).
WARNING !
Careless or improper use of this product can cause serious or even fatal injury.
Before operating a chain saw or other DOLMAR products it is important that you read, fully understand and
carefully follow the instructions outlined in this owners manual. Kickback may cause severe or fatal injury and
is one of many potential dangers in operating a chain saw. Kickback and other safety related precautions are
described in detail within this owners manual. Additional owners manuals are available from DOLMAR POWER
PRODUCTS, PO Box 5007, Alpharetta, GA, 30005-5007, USA, Telephone 1-888-OPE-PART.
Contents Page
Delivery inventory 4
Symbols 4
Safety precautions 5-16
Denomination of components 17
Technical data 18
PS-3410 TH - Mounting the guide bar
and saw chain 19-20
PS-3410 TH (TLC) - Mounting the guide bar
and saw chain 21-22
Checking the chain tension 23
Chain brake 23
Engaging the chain brake 23
Fuel / Refuelling 24-25
Chain lubrication 26
Starting the engine 27
Stopping the engine 27
Checking the chain brake 28
Contents Page
Adjusting the carburetor 28
Sharpening the saw chain 29-30
Cleaning the brake band and sprocket interior 31
Cleaning the guide bar 31
Replacing the saw chain 32
Replacing the fuel lter 32
Cleaning the air lter 32
Replacing the spark plug 33
Replacing the starter cable 33
Replacing the return spring 33
Cleaning the mufer
Replacing/cleaning the spark arrester screen 34
Cleaning the cylinder space 34
Instructions for daily and periodic maintenance 35
Service, spare parts and guarantee 36
Troubleshooting 37
Extract from the spare parts list 38-39
This product complies with: American National Standard Institute B 175.1-2000 chain saw safety standard.
Canadian Standards Association Z62.1-03 chain saw safety standard.
Z62.3-04 chain saw kickback standard.
Society of Automotive Engineers SAEJ 335-Jun 95 „Multiposition small
engine exhaust system re ignition
suppression”
With the purchase of this chain saw you have chosen a German quality product. Important instructions for the as-
sembly and operation of this saw are given in this manual. For your own safety, we ask you to read the accident
prevention instructions very carefully before putting your chain saw into operation, as incorrect handling can,
despite all precautions, lead to accidents. With a little care and attention you will have good service and lasting
satisfaction from this rst-rate product.
PS-3410 TH / PS-3410 TH (TLC)

4
In case one of the parts listed should not be included
in the delivery inventory, please consult your sales
agent.
Symbols
You will notice the following symbols on the chain saw and in the Owner’s and Safety Manual:
Delivery inventory
1. Chain saw
2. Guide bar
3. Saw chain
4. Chain protection cover
5. Assembly tool
6. Instruction manual (not shown)
145
3
2
Further
symbols
see page 6.
I/STOP-switch
(short-circuit switch)
Stop engine!
Engine -manual start
Choke lever
Carburetor
adjustment
CAUTION: Kickback!
Hold the saw with both
hands while working!
One-handed use is ex-
tremely hazardous!
Read instruction manual
and follow the warning-
and safety precautions!
Particular care
and caution!
Forbidden!
Wear protective helmet,
eye and ear protection!
Wear protective
gloves!
No smoking!
No open re!
Chaine brake
Fuel and oil
mixture
Chain oil
Saw chain oil
adjustment screw
Direction of
chain movement
First aid

5
Safety precautions for chain saw operators
While operating the chain saw please observe the
following rules:
a) Contact of the guide bar nose with any object
should be avoided.
b) Tip contact may cause the guide bar to move
suddenly upward and backward, which may
cause serious or fatal injury.
c) Always operate the chain saw with both hands.
WARNING!
Readandfollowallsafetyprecautionsintheowner’s
manual. Failure to follow instructions could result in
serious injury. It is recommended to lend the chain
saw only to people who are experienced in working
with chain saws. Always hand over the Owner’s
and Safety Manual.
WARNING!
This chain saw is capable of severe kickback that
could result in serious injury to the operator. Do
not operate this chain saw unless you have ex-
traordinary cutting needs and experience in and
special training for dealing with kickback. Chain
saws with signicantly reduced kickback potential
are available.
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.
This contact may abruptly stop the saw chain and
in some cases may cause a lightning fast reverse
reaction,kickingtheguidebarupandbacktowards
the user, or push the guide bar back towards the
operator. Kickback may cause you to lose control
of the saw.
As a chain saw user, you can take several steps to
reduce the risk of a kickback and potential injury.
A. With a basic understanding of kickback, you
can reduce or eliminate the element of sur-
prise. It is a sudden surprise that contributes
to accidents.
B. Keep a good rm grip on the saw with both
hands, your right hand on the rear grip and
your left hand on the tubular handle, when the
engine is running. Use a rm grip with thumbs
and ngers encircling the chain saw handles. A
rm grip can neutralize kickback and help you
maintain control of the saw. Don’t let go!
C. Make sure that the area in which you are cut-
ting is free from obstructions. Do not let the
nose of the guide bar contact the log, branch,
or any other obstructions which could be hit
while you are operating the saw.
D. Do not overreach or cut above shoulder
height.
E. Follow manufacturer’s sharpening and main-
tenance instructions for the saw chain.
F. Only use replacement bars and chains speci-
ed by the manufacturer or the equivalent.
Additional safety precautions
The following additional safety precautions should be
observed by all users of chain saws:
1. Do not operate a chain saw when you are fati-
gued.
2. Use safety footwear; snug-tting clothing; protec-
tive gloves; and eye, hearing, and head protection
devices.
3. Use caution when handling fuel. Move the chain
saw at least 10 feet (3 m) from the fueling point
before starting the engine.
4. Do notallow other personstobe nearthe chain saw
when starting or cutting with the chain saw. Keep
bystanders and animals out of the work area.
5. Do not start cutting until you have a clear work
area, secure footing, and a planned retreat path
from the falling tree.
6. Keep all parts of your body away from the saw
chain when the engine is running.
7. Before you start the engine, make sure that the
saw chain is not contacting anything.
8. Carry the chain saw with the engine stopped, the
guide bar and saw chain to the rear, and the mufer
away from your body.
9. Do not operate a chain saw that is damaged,
is improperly adjusted, or is not completely and
securely assembled. Be sure that the saw chain
stops moving when the throttle control trigger is
released.
10. Shut off the engine before setting it down.
11. 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.
12. When cutting a limb that is under tension be alert
for springback so that you will not be struck when
the tension on the wood bers is released.
13. Keep the handles dry, clean, and free of oil or fuel
mixture.
14. Operate the chain saw only in well-ventilated
areas.
15. Do not operate a chain saw in a tree unless you
have been specically trained to do so.
16. All chain saw service, other than the items listed
in the owner’s manual maintenance instructions,
should be performed by DOLMAR . (For example,
if improper tools are used to remove the ywheel
or if an improper tool is used to hold the ywheel
in order to remove the clutch structural damage to
the ywheel could occur and could subsequently
cause the ywheel to burst.)
17. When transporting your chain saw, use the chain
protection cover.
18. Low kickback bars and low kickback chains are
designed to reduce the risk of kickback injury. Ask
your DOLMAR dealer about these devices.

6
1
2
XXX.YYY.ZZZ
XXX.YYY.ZZZ
max. CKA 40
O
C US
General Safety Precautions
The use of any chain saw may be hazardous. At full
throttle chain speed can reach 45 mph (20 m/s). It is
important that you read; fully understand and observe
the following safety precautions and warnings. Read
the Owner’s Manual and the safety instructions peri-
odically.
WARNING !
Reactive forces, including kickback, can be dan-
gerous. Careless or improper use of any chain saw
may cause serious or fatal injury.
Have your DOLMAR dealer show you how to ope-
rate your chain saw. Observe all applicable local
safety regulations, standards and ordinances.
WARNING!
Minors should never be allowed to use a chain
saw.
Bystanders,especiallychildrenandanimalsshould
not be allowed in the area where a chain saw is
in use (g. 1).
Never let the saw run unattended.
Store it in a locked place away from children. Fill
the fuel tank to 7/8 th full (see storing the saw).
Do not lend your chain saw without this Owner’s
and Safety Manual. Be sure that anyone using your
saw understands the information given.
Proper use of a chain saw involves
1. the operator
2. the saw
3. the use of the saw.
Discription of symbols used on chain
saws:
CSA Standards Z62.1-03
Class 1B Z62.3-04
ANSI Standard B175.1-2000
SAE Standard SAE J335
MaximumComputed Kickback Angle
(CKA)* with using the chain brake when
using the recommended bar and chain
combinations (In this example the CKA is 40°).
WARNING !
Prolonged use of chain saws exposing the operator
to vibrations may produce Whitenger disease (Ray-
naud’s phenomenon). This phenomenon reduces
the hand’s ability to feel and regulate temperature,
produces numbness and burning sensations and
may cause nerve and circulation damage and
tissue necrosis.
All DOLMAR saws are therefore provided with an
antivibration system which is essential for those
using chain saws on a regular or sustained basis.
Antivibration systems do not guarantee that you
will not sustain Whitenger disesase, however, they
reduce this danger considerably. Nevertheless,
continual and regular users should observe their
hands and ngers and in case of any abnormal
symptoms, seek medical advice immediately.
The operator
Physical Condition
You must be in good physical condition and mental
health and not under the inuence of any substance
(drugs, alcohol), which might impair vision, dexterity
or judgment.
Always use two hands when
operating the chain saw!
* The Computed Kickback Angle is a calculated value
from energies measured on a test bench.It is not the
angle of the guide bar moved upward in case of a
KICKBACK.
Reduced Kickback Bar and
Chaincombinationthathasbeen
evaluated with the power head
to achieve kickback protection
(according to ANSI and CSA
standards).
Contact of the guide bar tip with
any object should be avoided!
Tip contact may cause the guide
bar to move suddenly upward
andbackward, whichmay cause
serious injury!
Maximum Computed Kickback Angle
(CKA)* without using the chain brake when
using the recommended bar and chain
combinations (In this example the CKA is 45°).
max. CKA 45O

7
3
4
The saw
Parts of the chain saw: illustrations and description of
parts see page 17.
WARNING !
Never modify a chain saw in any way. Only at-
tachments supplied by DOLMAR or expressly
approved by DOLMAR for use with the specic
saw are authorized.
WARNING !
Bow guide bars substantially increase the potential
for kickback and severe or fatal injury due to the
greaterkickbackzoneofthebowdesign.Bowguide
bars are not recommended for use on DOLMAR
chain saws nor are they approved by the ANSI B
175.1-2000 chain saw safety standard.
The use of the saw
Transporting the chain saw
WARNING!
Always stop the engine before putting a chain
saw down or carrying it. Carrying a chain saw
with the en- gine running is extremely dangerous.
Accidental acceleration of the engine can cause
the chain to rotate.
Avoid touching the hot mufer.
By hand: When carrying your saw by hand, the
engine must be stopped and the saw must be in
the proper position.
The chain protection cover should be over the
chain and the guide bar must point backwards.
When carrying your saw the bar should be behind
you (g. 4).
By vehicle: When transporting in a vehicle, keep
chainandbarcoveredwiththechainguard.Properly
secure your saw to prevent turnover, fuel spillage
and damage to the saw. Make sure the saw in not
exposed to heat or sparks.
Proper clothing
Clothing must be sturdy and snug-tting, but allow
complete freedom of movement. Avoid loose-tting
jackets, scarfs, neckties, jewelry, ared or cuffed pants,
or anything that could become entangled with the saw
orbrush.Wearoverallsorjeanswithareinforcedcutting
resistant insert (g. 3).
Protect your hands with gloves when handling saw and
saw chain. Heavy-duty, nonslip gloves improve your
grip and protect your hands.
Wear protective helmet,
eye and ear protection
Good footing is most important in chain saw work.
Wear sturdy boots with nonslip soles. Steel-toedsafety
boots are recommended.
Proper eye protection is a must. Non-fogging, vented
goggles and a face screen is recommended. Their
use reduces the risk of eye and facial injury.
Wear an approved safety hard hat to protect your
head. Chain saw noise may damage your hearing.
Always wear noise protection equipment (ear plugs
or ear muffs) to protect your hearing.
Continual and regular users should have their
hearing checked regularly.

8
6
5
10 feet
5a
6a
Chain saw operating instructions
For assembly follow the procedure in the appropriate
section "Mounting Guide Bar and Chain" of this manual.
DOLMARchain,guidebarandsprocketmustmatcheach
other (see the appropriate section in this manual).
WARNING!
Proper tension of the chain is extremely impor-
tant. In order to avoid false setting the tensioning
procedure must be followed as described in this
manual. Always make sure the hexagonal nut(s)
for the sprocket guard is (are) tightened securely
aftertensioningthechain. Checkchaintensiononce
more after having tightened the nuts and thereafter
at regular intervals (always before starting to work).
If the chain becomes loose while cutting, shut off
the engine and then tighten. Never try to tighten
the chain while the engine is running!
Fueling
Your DOLMAR saw uses on oil-gasoline mixture for
fuel (see chapter "Fuel" of this manual).
Wipe off any spilled fuel before starting your saw and
check for leakage.
Checkforfuelleakagewhilerefuelingandduringopera-
tion. If fuel or oil leakage is found, do not start or run
the engine until leak is xed and spilled fuel has been
wiped away. Clothing with fuel on it has to be changed
immediately (this is a danger to your life!).
Avoid skin contact with fuel. Never loosen or remove
the cap of the fuel tank while the engine is running.
Starting
Do not drop start. This method is very dangerous be-
cause you may lose control of the saw (g. 6).
WARNING!
Gasoline is an extremely ammable fuel. Use ex-
treme caution when handling gasoline or fuel mix.
Do not smoke or bring any sparks or ame near
the fuel (g. 5).
Fueling instructions
Fuel your chain saw in well ventilated areas or out-
doors. Always shut off the engine and allow it to cool
before refueling. Select bare ground for fueling and
move the chain saw at least 10 feet (3 m) from fueling
spot before starting the engine (g. 5a).
Place the chain saw on rm ground or other solid
surface in an open area. Maintain a good balance and
secure footing. Place your right foot through the rear
handle opening and rmly grasp the front handle with
your left hand (g. 6a).
Be absolutely sure that guide bar and chain are clear
of you or all other obstructions and objects, including
the ground, because when the engine starts in semi-
throttle position, engine speed will be fast enough for
the clutch to engage the sprocket and turn the chain
which may cause a kickback.
Never attempt to start the saw when the guide bar is
in a cut or kerf.
When you pull the starter grip, don’t wrap the starter
rope around your hands. Do not allow the grip to snap
back, but guide the starter rope slowly back to permit
the rope to rewind properly. Failure to follow this pro-
cedure may result in injury to hand or ngers and may
damage the starter mechanism.

9
8
7
Important adjustments
WARNING!
At correct idle speed, chain should not turn. For di-
rections to adjust idle speed, see the appropriate
section of this instruction manual.
Do not use a saw with incorrect idle speed adjust-
ment. Adjust the idle speed yourself according to
the appropriate section of this manual.
Have your DOLMAR dealer check your saw and
make proper adjustments or repairs.
Check the saw chain tension frequently, especially
just after installing a new chain. New chains may
stretch more during their initial use. A properly ad-
justed saw chain can be pulled freely around the
guide bar by hand without sagging. Always stop
the engine and wear gloves when checking or ad-
justing the chain tension.
Working conditions
Operateyourchainsawonlyoutdoors.Operatethesaw
under good visibility and daylight conditions only.
WARNING!
Take extreme care in wet and freezing weather
(rain, snow, ice). Put off the work when the weather
is windy, stormy or rainfall is heavy. Clear the area
where you are working.
WARNING!
Avoid stumbling on obstacles such as stumps,
roots or rocks and watch out for holes or ditches.
Be extremely cautious when working on slopes or
uneven ground. There is increased danger of slip-
ping on freshly debarked logs.
Cutting instructions
Always hold the saw rmly with both hands when the
engine is running. Place your left hand on the tubular
handle and your right hand on grip and throttle lever.
Left-handers should follow these instructions too.
WARNING!
Do not operate your chain saw in semi-throttle
position. Cutting in this position does not permit
the operator proper control of the saw or chain
speed.
WARNING!
Never come too close to a rotating chain with your
hands or body.
WARNING!
Do not cut any material other than wood or
wooden objects.
Use your chain saw for cutting only. It is not de-
signed for prying or shoveling away limbs, roots
or other objects.
When sawing, make sure that the saw chain does
not touch any foreign materials such as rocks, nails
and the like (g. 8). Such objects may be ung
off, damage the saw chain or cause the saw to
kickback.
Wrap your ngers tightly around the handles, keeping
the handles cradled between your thumb and foren-
ger (g. 7). With your hands in this position, you can
best oppose and absorb the push, pull and kickback
forces of your saw without having it slip out of your
grip (see section of reactive forces). Make sure your
chain saw handle and grip are in good condition and
free of moisture, pitch, oil or grease.
Always start a cut with the chain running at full speed
and the spike bar in contact with the wood.
WARNING!
Never use the saw with one hand. You cannot
control reactive forces (see pages 10 to 12) and
may lose control of the saw.

10
9
10 11
12
Position the chain saw in such a way that your body is
clear of the cutting attachment whenever the engine
is running (g. 10).
Don’t put pressure on the saw when reaching the end
of a cut. The pressure may cause the bar and rotating
chain to pop out of the cut or kerf, go out of control
and strike the operator or some other object. If the
rotating chain strikes some other object a reactive
force (see pages 11 to 13 ) may cause the chain to
strike the operator.
Reactive forces during the cut, including kickback
WARNING!
Reactive forces, that may occur during any cut are
kickback, pushback and pull-in. Reactive forces
can be dangerous! In any chain saw, the powerful
force used to cut wood can be reversed (and work
against the operator).
If the rotating chain is suddenly stopped by con-
tact with any solid object like a log or branch or is
pinched, the reactive forces instantly occur. These
reactive forces may result in loss of control which
may, in turn, cause serious or fatal injury. An un-
derstanding of the causes of these reactive forces
may help you avoid loss of control.
The most common reactive forces are
- kickback,
- pushback,
- pull-in.
In order to keep control of your saw, always maintain
a rm foothold. Never work on a ladder, in a tree or on
any other insecure support. Never use the saw above
shoulder height (g. 9).
This reaction can occur in a fraction of a second and
under some circumstances, cause the guide bar and
chain to strike the operator with enough force to cause
severe or fatal injury. It may also occur during limbing. It
also occurs when the nose of the guide bar is pinched
unexpectedly, unintentionally contacts solid material
in the wood (g.12) or is incorrectly used to begin a
plunge or boring cut.
The greater the force of the kickback reaction, the
more difcult it becomes for the operator to control
the saw.
Kickback:
Kickback occurs when the upper quadrant of the bar
nose contacts a solid object in the wood or is pinched
(g. 11). The reaction of the cutting force of the chain
causes a rotational force of the chain saw in the direc
tionoppositetothechainmovement,mainlyintheplane
of the bar. This may ing the bar in an uncontrolled arc
towards the operator.