Makita DCS 330 TH User Manual
Owner’ s and
Safety Manual
for Gasoline Chain Saws (pages 2 - 35)
Manuel d’emploi
et de sécurité
de tronçonneuses thermiques (pages 36 - 69)
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1997
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DCS 330 TH
WARNING!
Read and understand this Manual. Always follow safety precautions in the Owner’s and Safety Manual.
This chain saw is intended for use only by tree surgeons and other persons trained in working in
trees! Improper use can cause serious injury! Keep this Instruction Manual!
The engine exhaust from this product contains chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
ATTENTION:
Suivez toujours les conseils de sécurité du présent manuel d’emploi et de sécurité.
Cette tronçonneuse ne peut être utilisée que par un personnel élagueurs qualifié!
Une utilisation incorrecte de la tronçonneuse peut entraîner des blessures graves!
Garder avec soin le manuel d’emploi!
Les gaz d’échappement émis par ce produit contient des produits chimiques connus par l’Etat de
Californie pour provoquer le cancer, des défauts de naissance ou autres dommages de reproduction.
MU
1
WARNING !
Careless or improper use of this product can cause serious or even fatal injury.
Before operating a chain saw or other MAKITA 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 MAKITA USA,
INC.,14930-C Northam Street, La Mirada, CA 90638-5753, Telephone: (714) 522 80 88 and MAKITA CANADA
INC., 1950 Forbes Street, Whitby, Ontario, Canada, L1N 7B7, Telephone: (905) 571 22 00.
MAKITA DCS 330 TH
This product complies with: American National Standard Institute B 175.1-1991 chain saw safety standard.
Canadian Standards Association Z62.1-95 chain saw safety standard.
Z62.3-96 chain saw kickback standard.
Society of Automotive Engineers SAEJ 335-Jun 95 „Multiposition small
engine exhaust system fire ignition
suppression”
With the purchase of this chain saw you have chosen a quality product. Important instructions for the assembly and
operation of this saw are given in this manual.
The DCS 330 TH (Tophandle) is a very light and handy chain saw with the handle on the top. This model was developed
especially for tree surgery and care, and may be used only by persons specially trained in tree surgery and care.
The automatic chain lubrication with variable-flow oil pump and maintenance-free electronic ignition ensure trouble-free
operation, while the hand-saving anti-vibration system and ergonomic grips and controls make work easier, safer, and
less tiring for the user.
The safety features of the DCS 330 TH are state of the art and meet all international safety standards.
They include handguards on both grips, grip safety, chain catch, safety saw chain, and chain brake. The chain brake
can be actuated manually, and is also inertia-actuated automatically in case of kickback.
In order to ensure the proper functioning and performance of your new chain saw, and
to safeguard your own personal safety, it is imperative that you read this instruction
manual thoroughly before operation. Be especially careful to observe all safety
precautions! Failure to observe these precautions can lead to severe injury or death!
The MAKITA DCS 330 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).
Contents Page
Delivery inventory 3
Symbols 3
Safety precautions 4-15
Denomination of components 16
Technical data 17
Approved bar and chain combinations 17
Mounting the guide bar and saw chain 18-19
Checking the chain tension 20
Safety chain brake 20
Fuel / Refuelling 21-22
Adjusting the chain lubrication 23
Checking the chain lubrication 23
Starting the engine 24
Stopping the engine 24
Checking the safety chain brake 25
Adjusting the carburetor 25-26
2
Contents Page
Sharpening the saw chain 26-27
Cleaning the brake band and sprocket interior 28
Cleaning the guide bar,
lubricating the sprocket nose 28
Replacing the saw chain 29
Replacing the suction head 29
Cleaning the air filter 29
Replacing the spark plug 30
Replacing the starter cable / return spring 30-31
Cleaning the muffler / spark arrester screen 31
Cleaning the cylinder space 31
Instructions for periodic maintenance 32
Service, spare parts and guarantee 32-33
Troubleshooting 33
Extract from the spare parts list 34
Delivery inventory
1. Chain saw
2. Guide bar
3. Saw chain
4. Chain protection cover
5. Assembly tool
6. Owner’s manual (not shown)
32
145
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 instruction manual:
Read instruction manual
and follow the warningand safety precautions!
Warning!
This saw may be used only
by trained tree surgeons!
Particular care
and caution!
Forbidden!
Wear protective helmet,
eye and ear protection!
STOP
STOP
No open fire!
Engine stop switch
Stop engine!
Engine -manual start
Choke lever
Hold the saw with
both hands while working! One-handed use
is extremely hazardous!
Chaine brake
Fuel and oil mixture
Saw chain oil
adjustment screw
Chain oil
Direction of chain
movement
Wear protective
gloves!
No smoking!
HL
IDLE
Carburetor adjustment
First aid
CAUTION: Kickback!
Further symbols see page 5.
3
Safety precautions for chain saw operators
CAUTION: This chain saw is designed especially for
tree care and surgery. Only persons trained in tree
care and surgery may use this saw! Observe all
literature, procedures and recommendations from
the relevant professional organisation. Failure to do
so constitutes a high accident risk! We recommend
always using a rising platform (cherry picker, lift) for
sawing in trees. Rappelling (abseil) techniques are
extremely dangerous and require special training!
The operator must be trained in and familiar with the
use of safety equipment and working and climbing
techniques! Always use the appropriate belts, ropes
and carabiners when working in trees. Always use
restraining equipment for both the operator and the
saw!
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!
Read and follow all safety precautions in the owner’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 extraordinary
cutting needs and experience in and special training
for dealing with kickback. Chain saws with significantly
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, kicking
the guide bar up and back towards 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 surprise. It is
a sudden surprise that contributes to accidents.
B. Keep a good firm 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 firm grip with thumbs and
fingers encircling the chain saw handles. A firm
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 cutting
4
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 mainten-
ance instructions for the saw chain.
F. Only use replacement bars and chains specified
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 fatigued.
2. Use safety footwear; snug-fitting clothing; protective
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 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.
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 muffler
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 fibers 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 specifically 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 MAKITA . (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 could subsequently cause the
flywheel 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 MAKITA dealer about these devices.
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
periodically.
WARNING !
Reactive forces, including kickback, can be dangerous. Careless or improper use of any chain saw
may cause serious or fatal injury.
Have your MAKITA dealer show you how to operate
your chain saw. Observe all applicable local safety
regulations, standards and ordinances.
1
Always use two hands when
operating the chain saw!
XXX.YYY.ZZZ
XXX.YYY.ZZZ
Reduced Kickback Bar and
Chain combination that has been
evaluated with the power head
to achieve kickback protection
(according to ANSI and CSA
standards).
* 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.
The operator
Physical Condition
You must be in good physical condition and mental
health and not under the influence of any substance
(drugs, alcohol), which might impair vision, dexterity
or judgment.
WARNING!
Minors should never be allowed to use a chain
saw.
Bystanders, especially children and animals should
not be allowed in the area where a chain saw is in
use (fig. 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
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.
max. CKA 21
O
Maximum Computed Kickback Angle
(CKA)* without using the chain brake when
using the recommended bar and chain
combinations (In this example the CKA is 21°).
Contact of the guide bar tip with
any object should be avoided!
Tip contact may cause the guide
bar to move suddenly upward
and backward, which may cause
serious injury!
2
WARNING !
Prolonged use of chain saws exposing the operator
to vibrations may produce Whitefinger disease
(Raynaud’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 MAKITA 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 Whitefinger disesase, however,
they reduce this danger considerably.
Nevertheless, continual and regular users should
observe their hands and fingers and in case of any
abnormal symptoms, seek medical advice
immediately.
5
Proper clothing
The saw
Clothing must be sturdy and snug-fitting, but allow
complete freedom of movement. Avoid loose-fitting
jackets, scarfs, neckties, jewelry, flared or cuffed pants,
or anything that could become entangled with the
saw or brush. Wear overalls or jeans with a reinforced
cutting resistant insert (fig. 3).
Protect your hands with gloves when handling saw
and saw chain. Heavy-duty, nonslip gloves improve
your grip and protect your hands.
Parts of the chain saw: illustrations and description of
parts see page 16.
WARNING !
Never modify a chain saw in any way. Only
attachments supplied by MAKITA or expressly
approved by MAKITA for use with the specific saw
are authorized.
WARNING !
Bow guide bars substantially increase the potential
for kickback and severe or fatal injury due to the
greater kickback zone of the bow design. Bow
guide bars are not recommended for use on
MAKITA chain saws nor are they approved by the
ANSI B 175.1-1991 chain saw safety standard.
The use of the saw
Transporting the chain saw
3
Good footing is most important in chain saw work.
Wear sturdy boots with nonslip soles. Steel-toed safety
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.
WARNING!
Always stop the engine before putting a chain saw
down or carrying it. Carrying a chain saw with the
engine running is extremely dangerous. Accidental
acceleration of the engine can cause the chain to
rotate.
Avoid touching the hot muffler.
4
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 (fig. 4).
Wear protective helmet,
eye and ear protection
6
By vehicle: When transporting in a vehicle, keep
chain and bar covered with the chain guard. Properly
secure your saw to prevent turnover, fuel spillage
and damage to the saw. Make sure the saw is not
exposed to heat or sparks.
Chain saw operating instructions
For assembly follow the procedure in the appropriate
section "Mounting Guide Bar and Chain" of this manual.
MAKITA chain, guide bar and sprocket must match
each other (see the appropriate section in this manual).
WARNING!
Proper tension of the chain is extremely important.
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
after tensioning the chain. Check chain tension
once 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 MAKITA 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.
Check for fuel leakage while refueling and during
operation. If fuel or oil leakage is found, do not start or
run the engine until leak is fixed 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 because you may lose control of the saw (fig. 6).
5
WARNING!
Gasoline is an extremely flammable fuel. Use
extreme caution when handling gasoline or fuel
mix. Do not smoke or bring any sparks or flame
near the fuel (fig. 5).
Fueling instructions
Fuel your chain saw in well ventilated areas or outdoors. 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 (fig. 5a).
6
6a
Place the chain saw on firm 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 firmly grasp the front handle with
your left hand (fig. 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 semithrottle 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.
10 feet
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
procedure may result in injury to hand or fingers and
may damage the starter mechanism.
5a
7
Important adjustments
WARNING!
At correct idle speed, chain should not turn. For directions to adjust idle speed, see the appropriate
section of this instruction manual.
Do not use a saw with incorrect idle speed adjustment. Adjust the idle speed yourself according to
the appropriate section of this manual.
Have your MAKITA 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 adjusted saw chain can be pulled freely around the
guide bar by hand without sagging. Always stop the
engine and wear gloves when checking or adjusting
the chain tension.
Working conditions
Wrap your fingers tightly around the handles, keeping
the handles cradled between your thumb and forefinger
(fig. 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 9 to 11) and may
lose control of the saw.
Operate your chain saw only outdoors. Operate the
saw 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 slipping
on freshly debarked logs.
Cutting instructions
Always hold the saw firmly 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.
8
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
designed 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 (fig. 8). Such objects may be flung
off, damage the saw chain or cause the saw to kick
back.
7
8
9
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. Never use the saw above
shoulder height (fig. 9).
10
Position the chain saw in such a way that your body is
clear of the cutting attachment whenever the engine
is running (fig. 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 10 to 12 ) 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 contact
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
understanding of the causes of these reactive
forces may help you avoid loss of control.
The most common reactive forces are
- kickback,
- pushback,
- pull-in.
11
Kickback:
Kickback occurs when the upper quadrant of the bar
nose contacts a solid object in the wood or is pinched
(fig. 11). The reaction of the cutting force of the chain
causes a rotational force of the chain saw in the direc tion
opposite to the chain movement, mainly in the plane
of the bar. This may fling the bar in an uncontrolled arc
towards the operator.
12
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 (fig.12) or is incorrectly used to begin
a plunge or boring cut.
The greater the force of the kickback reaction, the
more difficult it becomes for the operator to control the
saw.
9
Many factors influence the occurence and force of
the kickback reaction. The type of bar and saw chain
you use is a factor in the force of the kickback reaction.
The speed of contact at which the cutter contacts
the object.
Kickback force increase with the rate of impact.
The contact angle between the nose of the bar and
the foreign object (fig. 11).
Kickback is most pronounced in the upper quadrant
of the bar nose.
MAKITA chain types are designed to reduce kickback
forces.
The depth gauges:
Improper lowering of the depth gauges also increases
the risk of a kickback.
13
To avoid kickback
The best protection from personal-injury that may
result from kickback is to avoid kickback situations:
1. Hold the chain saw firmly with both hands and
maintain a secure grip.
Saw chain cutter sharpness:
WARNING!
A dull improperly sharpened chain may increase
the risk of kickback. Always cut with a properly
sharpened chain.
Devices for reducing the risk of kickback injury
MAKITA have developed a special chain brake to
reduce the risk of kickbacks.
This chain brake increases the safety factor on the job,
e.g. when the saw suddenly kicks upwards the chain
stops rotating within a fraction of a second. A deflection guard on the disengaging lever of the chain brake
and a loop rear handle ensure that the operator’s
hands are fully protected at all times.
Kickback tendency increases as the radius or size of
the guide bar nose increases. MAKITA have developed guide bars with small nose radius, to reduce the
kickback tendency.
WARNING!
No chain brake prevents kickback.
These brakes are designed only to stop the chain,
if activated.
To ensure a proper operation of the chain brake, it
must be properly maintained. Furthermore, there
must be a sufficient distance between the operator
and the bar to ensure that the chain brake has
sufficient time to activate and stop the chain before
potential contact with the operator.
2. Be aware of the location of the guide bar nose at
all times.
3. Never bring the nose of the guide bar in contact
with any object. Do not cut limbs with the nose of
the guide bar. Be especially careful with small,
tough limbs, small size brush and saplings which
may easily catch the chain.
4. Don’t overreach.
5. Don’t cut above shoulder height.
6. Begin cutting and continue at full throttle.
7. Cut only one log at a time.
8. Use extreme caution when re-entering a previous
cut.
9. Do not attempt plunge cuts (see page 13) if you
are not experienced with these cutting techniques.
10. Be alert for shifting of the log or other forces that
may cause the cut to close and pinch the chain.
11. Maintain saw chain properly. Cut with a correctly
sharpened, properly tensioned chain at all times.
12. Stand to the side of the cutting path of the chain
saw.
10
Pushback:
To avoid pull-in
Pushback occurs when the chain on the top of the bar
is suddenly stopped when it is pinched, caught or
encounters a foreign object in the wood. The reaction
of the chain drives the saw straight back toward the
operator causing loss of saw control. Pushback frequently occurs when the top of the bar is used for
cutting (fig. 14).
14
To avoid pushback
1. Be alert to forces or situations that may cause
material to pinch the top of the chain.
2. Do not cut more than one log at a time.
3. Do not twist the saw when withdrawing the bar
from a plunge cut or under buck cut (figures 25 to
27 and 33, pages 13 and 14), because the chain
can pinch.
Pull-in:
Pull-in occurs when the chain on the bottom of the bar
is suddenly stopped. The chain on the bottom of the
bar stops when it is pinched, caught or encounters a
foreign object in the wood (see fig. 15). The reaction of
the chain pulls the saw forward, causing the operator
to lose control.
1. Always start a cut with the chain rotating at full
speed and the spike bar in contact with the wood.
2. Pull-in may also be prevented by using plastic
wedges to open the kerf or cut.
Cutting techniques
Felling
Felling is cutting down a tree.
Before felling a tree, consider carefully all conditions
which may affect the direction of fall, including:
The intended direction of the fall.
The neutral lean of the tree.
Any unusually heavy limb structure.
Surrounding trees and obstacles.
The wind direction and speed.
WARNING!
Always observe the general condition of the tree.
Look for decay and rot in the trunk. If it is rotted
inside, it could snap and fall toward the operator
while being cut.
Also look for broken or dead branches which could
vibrate loose and fall on the operator. When felling
on a slope, the operator should stand on the up-hill
side.
Pull-in frequently occurs when the spike bar of the
saw is not held securely against the tree or limb and
when the chain is not rotating at full speed before it
contacts the wood.
15
WARNING!
Use extreme caution when cutting small size brush
and saplings which may easily catch the chain and
pull you off balance.
16
When felling in the vicinity of roads, railways and
power lines, etc., take extra precautions (see fig.
16). Inform the police, utility company or railway
authority before beginning to cut.
11
45°
1
2
2
45°
= cutting down area
17
When felling, maintain a distance of at least 2 1/2 tree
lengths from the nearest person (see fig. 17)
.
Note:
The noise of your engine may drown any warning call.
Felling instructions:
First cut
Second cut
20
If the tree has large buttress roots, cut into the largest
buttresses vertically first (horizontally next) and remove
(fig. 20).
Direction of fall
21
18
First clear the tree base and work area from interfering
limbs and brush and clean its lower portion with an axe
(see fig. 18).
45°
19
Then, establish a path of escape and remove all
obstacles. This path should be opposite to the planned
direction of the fall of the tree and at a 45° angle (fig.
19). An alternate path must also be selected. Place all
tools and equipment a safe distance away from the
tree, but not on the escape path.
Felling cut
1
"
1
/
(4cm)
2
1/10∅
Hinge
Felling notch
1/5∅
22
Felling notch
Hinge
23
Then, determine the placement of the felling notch
(fig. 21). The felling notch when properly placed determines the direction in which the tree will fall. It is
made perpendicular to the line of fall and should be as
close to the ground as possible. Cut the felling notch
to a depth of about one-fifth to one-fourth of the trunk
diameter (fig. 22). It should be in no case higher than it
is deep. Make the felling notch very carefully.
12
Begin the felling cut slighty higher than the felling
notch and on the opposite side of the tree (fig. 22).
Then cut horizontally through towards the felling notch.
Apply the chain saw with its spikes directly behind the
uncut portion of wood and cut toward the notch (fig.
23). Leave approximately 1/10 of the tree diameter
uncut! This is the hinge (fig. 23). Do not cut through the
hinge because you could lose control of the direction
of the fall. Drive wedges into the felling cut where
necessary to control the direction of the fall. Wedges
should be of wood, light alloy or plastic - never of steel,
which can cause kickback and damage to the chain.
Always keep to the side of the falling tree. When the
tree starts to fall, shut off the engine, withdraw the bar
and walk away on the pre-planned escape path. Watch
out for falling limbs.
WARNING!
Be extremely careful with partially fallen trees which
are poorly supported.
Plunge-Cut Method
Timber having a diameter more than twice the length of
the guide bar requires the use of the plunge-cut method
before making the felling cut.
First, cut a large, wide notch. Make a plunge cut in the
center of the notch.
The plunge cut is made with the guide bar nose. Begin
the plunge cut by applying the lower portion of the guide
bar nose to the tree at an angle (fig. 25). Cut until depth
of the kerf is about the same as the width of the guide bar
(fig. 26). Next, align the saw in the direction in which the
When the tree hangs or for some other reason does
not fall completely, set the saw aside and pull the
tree down with a cable winch, block and tackle or
tractor. If you try to cut it down with your saw, you
may be injured.
Sectioning Method
WARNING!
Felling a tree that has a diameter greater than the
length of the guide bar requires use of either the
sectioning or plunge-cut method. These methods
are extremely dangerous because they involve the
use of the nose of the guide bar and can result in
kickback. Only properly trained professionals should
attempt these techniques.
1
25
recess is to be cut. With the saw at full throttle, insert
the guide bar in the trunk (fig. 27).
Enlarge the plunge cut as shown in illustration (fig. 28)
26
23
24
For the sectioning method (fig. 24) make the first cut
with the guide bar fanning in toward the hinge. Then,
using the bumper spike as a pivot, reposition the saw
for the next cut. Avoid repositioning the saw more than
necessary. When repositioning for the next cut, keep
the guide bar fully engaged in the kerf to keep the
felling cut straight. If the saw begins to pinch, insert a
wedge to open the cut. On the last cut, do not cut the
hinge.
27
28
13
Bucking
3
WARNING!
There is an extreme danger of kickback at this
point. Extra caution must be taken to maintain
control of the saw. To make the felling cut, follow
the sectioning method described previously (fig.
29). If you are inexperienced with a chain saw
plunge-cutting should not be attempted. Seek the
help of a professional.
2
1
29
Limbing
Limbing is removing the branches from a fallen tree.
Bucking is cutting a log into sections.
31
WARNING!
1. When bucking, do not stand on the log. Make
sure the log will not roll down-hill. If on a slope,
stand on the up-hill side of the log (see fig. 31).
Watch out for rolling logs.
WARNING!
WARNING!
There is an extreme danger of kickback during the
limbing operation. Do not work with the nose of the
bar. Be extremely cautious and avoid contacting
the log or other limbs with the nose of the guide bar.
Do not stand on a log while limbing it - you may slip
or the log may roll.
30
Start limbing by leaving the lower limbs to support
the log off the ground (fig. 30). Always cut from the
top of the limb. Do not underbuck freely hanging
limbs. A pinch may result or the limb may fall,
causing loss of control. If a pinch occurs, stop the
engine and remove the saw, by lifting the limb.
2. Cut only one log at a time.
WARNING!
3. Shattered wood should be cut very carefully.
Sharp slivers of wood may be caught and flung
in the direction of the operator of the saw.
32
WARNING!
4. When cutting small logs, use a sawhorse (fig. 32).
Never permit another person to hold the log.
Never hold the log with your leg or foot.
WARNING!
Be extremely cautious when cutting limbs under
tension. The limbs could spring back toward the
operator and cause loss of control of the saw or
injury to the operator.
14
1. Relieving cut
2. Cross cut
2. Cross cut
Tension side
Pressure side
1. Relieving cut
Pressure side
Tension side
33
Maintenance and Repair
Never operate a chain saw that is damaged, improperly adjusted or not completely or securely assembled.
Follow the maintenance and repair instructions in the
appropriate section of this manual.
WARNING !
Always stop the engine and make sure that the
chain is stopped before commencing any maintenance or repair work or cleaning the saw. Do not
attempt any maintenance or repair work not described in this manual. Have such work performed
by your MAKITA service shop only.
Maintaining and storing the saw
Keep the chain, bar and sprocket clean and lubricated;
replace worn sprockets or chains.
34
WARNING!
5. Logs under strain require special attention to
prevent the saw from pinching. The first cut is
made on the compression side to relieve the
stress on the log (see fig. 33, 34). The bucking
cut is then made as shown. If the saw pinches,
stop the engine and remove it from the log.
Keep the chain sharp. You can spot a dull chain when
easy-to-cut wood becomes hard to cut and burn marks
appear on the wood.
Keep the chain at proper tension. Tighten all nuts,
bolts and screws except the carburetor adjustment
screws after each use.
Keep spark plug and wire connection tight and clean.
Store saws in a high or locked place, away from
children.
35
WARNING!
6. Only properly trained professionals should work
in an area where the logs, limbs and roots are
tangled (i. e. a blowdown area, fig. 35). Working in blowdown areas is extremely hazardous.
WARNING!
7. Drag the logs into a clear area before cutting.
Pull out exposed and cleared logs first.
15
Denomination of components
16
15
1
2 3 4 5
1314
10 91112
76
8
19 2018
17
1 Rear handle
2 Safety locking button (throttle lock)
3 Throttle lever
4 Stop knob for halfway throttle
5 Hand guard (release for chain brake)
6 Spike bar (accessories)
(toothed stop for holding saw steady against wood)
7 Chain
8 Guide bar
9 Chain protection cover
10 Retaining nut
11 Chain catch
12 Sprocket guard
13 Muffler with spark arrester screen
27
26
25
222324
14 Serial number
15 Adjusting screw for oil pump
16 I/STOP-switch
17 Front grip (tubular handle)
18 Filter cover
19 Starter grip
20 Carabiner or rope attachment point
21 Spark plug
22 Oil tank cap
23 Fan housing with starting assembly
24 Fuel tank cap
25 Idle adjustment screw
26 Choke
27 Adjusting screws "H-L" for carburetor
21
16
Technical data DCS 330 TH
Single-cylinder two-stroke
Piston displacement 1.96 cu. in (32.3 cm3)
Cylinder bore 1.45" (37 mm)
Piston stroke 1.18" (30 mm)
Max. power at speed 1.0 / 7,000 kW/rpm
Max. torque at speed 1.45 / 5,800 Nm/rpm
Idling speed / max. engine speed with bar and chain 2,800 rpm / 11,000 rpm
Sound Pressure Level at the operator’s ear
at full load according to ANSI B 175.1 100 db(A)
Sound Pressure Level at the bystander’s position
(50ft/15 m distance) according to ANSI B 175.1 76 db(A)
Ignition system
Electronic, without breaker
Spark plug CHAMPION RCJ 8
or Spark plug
Electrode gap .020" (0.5 mm)
Fuel system
Carburetor WALBRO WT with limiter caps
(all position diaphragm carburetor
with integral fuel pump)
Fuel tank capacity 8.8 oz. (0.25 l)
Fuel mixture see chapter "Fuel"
NGK BMR 6A
Weight
without cutting attachment 7 lbs. 15 oz. (3.6 kg)
Cutting attachment
Guide bar sprocket nose bar
Cutting length 14" (35 cm)
Safety saw chain (pitch) 3/8
Drive link gauge .050
Chain sprocket 6 teeth
Chain lubrication fully automatic oil pump (variable-flow)
Oil tank capacity 5.6 oz. (0.16 l)
Approved bar and chain combinations
"Low-kickback saw chain is a chain which has met the
kickback performance requirements of ANSI B 175.11991 (American National Standard for Power ToolsGasoline-Powered Chain Saws-Safety Requirements)
when tested on the representative sample of chain
saws below 3.8. C.l.D. specifed in ANSI B 175.11991". The approved bar and chain combinations are
low kickback chains according to ANSI B 175.1-1991
and also meet the kickback requirements of CSA
3
Z62.3-96 for chain saws below 80 cm
.
The chain saw DCS 330 TH has been approved
with following guide bar and chain combinations:
Drive link gauge .050"
Do not use other replacement bars and chains
unless they have been designated as meeting the
ANSI B 175.1-1991 (for USA) and CSA Z62.3-96
(for Canada) kickback performance requirements
on that specific powerhead, or has been designated as "low kickback" saw chain in accordance
with the ANSI B 175.1-1991 (for USA) and CSA
Z62.3-96 (for Canada) standard.
WARNING
MAKITA: Guide bar 3/8" Saw chain 3/8"
length Part no. Part no.
14" (35 cm) 1682473 91VG-52E
OREGON: Guide bar 3/8" Saw chain 3/8"
length Part no. Part no.
14" (35 cm) 140SDEA041 91VG-52E
"There may be other replacement bar and chain combinations available that also reduces the risk of injury
from kickback".
17
A
B
PUTTING INTO OPERATION
CAUTION:
Before doing any work on the guide bar or chain, always
STOP
1
2
4
3
switch off the engine and pull the plug cap off the spark
plug (see "Replacing the spark plug"). Always wear protective gloves!
CAUTION:
Do not start the saw until it has been completely assembled and inspected!
Mounting the guide bar and saw chain
Use the universal wrench delivered with the chain saw for the
following work.
Put the chain saw on a stable surface and carry out the
following steps for mounting the guide bar and chain:
Disengage the chain brake by pulling the hand guard (1) in the
direction of the arrow.
Unscrew retaining nut (2).
Spread the sprocket guard (3) slightly, push it out of the
mounting (4) and remove it.
C
Remove the transport cover (5).
Turn the chain tensioning screw (6) to the left (counter-clock-
wise) until the lug (7) is below the guide pin (8).
5
678
Position the guide bar (9). Make sure that the pin (10) of the
chain tightener is in the hole on the guide bar.
9
18
D
10
2
3
14
2
4
11 13
12 11
Lift the chain (11) over the clutch drum and onto the sprocket
(12). Using your right hand, guide the chain into the top guide
groove on the guide bar. Note that the cutting edges along the
top of the chain must point in the direction of the arrow!
Lead the chain (11) around the sprocket nose (13) of the guide
bar.
NOTE:
The chain should be easy to pull in the direction of the arrow.
The clutch drum (E/12) should turn with the chain (the sprocket
engages the chain).
E
F
First push the sprocket guard (3) into the mounting (4) and then
over the mounting bolt (14).
NOTE:
If the chain brake on the dismounted chain guard is inadvertently actuated, it will not be possible to push the sprocket
guard all the way over the mounting bolt. You will first have to
release the chain brake (Fig. B).
Tighten the mounting nut (2) hand-tight.
G
Tightening the saw chain
Turn the chain tightener (C/6) to the right (clockwise)
until the chain engages the guide groove of the bottom side of
the bar (see circle).
Slightly lift the end of the guide bar and turn the chain adjusting
screw (C/6) to the right (clockwise) until the chain rests against
the bottom side of the guide bar.
While still holding up the guide bar, tighten the retaining nut (2)
with the universal wrench.
H
19
A
STOP
Checking the chain tension
The tension of the chain is correct if the chain rests against the
bottom side of the guide bar and can still be easily turned by
hand.
While doing so the chain brake must be released.
Check the chain tension frequently - new chains tend to get
longer during use!
When checking the chain tension the engine must be
off.
NOTE:
It is recommended to use 2-3 chains alternatively.
In order to guarantee uniform wear of the guide bar the bar
should be turned over whenever replacing the chain.
switched
Chain brake
The DCS 330 TH comes with an inertia chain brake as
standard equipment. If kickback occurs due to contact of the
guide-bar tip with wood (see SAFETY PRECAUTIONS, pages
5, 9, 10), the chain brake will stop the chain through inertia
activation if the kickback is strong enough.
The chain will stop within a fraction of a second.
The chain brake is installed to block the saw chain before
starting the engine and to stop it immediately in case of
an kickback emergency.
B
C
12
2
Engaging the chain brake (braking)
If the kickback is strong enough the sudden acceleration of the
guide bar combined with the inertia of the hand guard (2) will
automatically actuate the chain brake.
To engage the chain brake manually, simply push the hand
guard (2) forward (towards the tip of the saw) with your left hand
(arrow 1).
Releasing the chain brake
Pull the hand guard (2) towards you (arrow 2) until you feel it
catch. The brake is now released.
20
Fuel
CAUTION:
This saw is powered by mineral-oil products (gasoline
(petrol) and oil).
Be especially careful when handling gasoline (petrol).
Avoid all flame or fire. Do not smoke (explosion hazard).
Fuel mixture
The engine of the chain saw is a high-efficiency two-stroke
engine. It runs on a mixture of gasoline and two-stroke engine
oil.
The engine is designed for unleaded regular gasoline with a
min. octane value of 91 ROZ. In case no such fuel is available,
you can use fuel with a higher octane value. This will not affect
the engine.
In order to obtain an optimum engine output and to protect
your health and the environment use unleaded fuel only.
Gasoline which contens alcohol should not used in
MAKITA products.
For lubricating the engine use a two-stroke engine oil (quality
grade: TC-3), which is added to the fuel.
The correct mixture ratio:
25:1 Mix 25 parts fuel and 1 part oil.
Gasoline
25:1
OIL
+
1.0 US-gal. (3.7 l) 5.0 floz (150 cm3)
2.5 US-gal. (9.4 l) 12.8 floz (378 cm3)
5.0 US-gal. (18.9 l) 25.6 floz (756 cm3)
NOTE:
Fuel cannot be stored for an unlimited period of time.
Buy only as much as will be consumed in 4 weeks.
Use only approved and marked containers for
transport and storage.
NOTE:
For preparing the fuel-oil mixture first mix the entire oil quantity
with half of the fuel required, then add the remaining fuel.
Shake the mixture thoroughly before pouring it into the tank.
Note: Carefully open the fuel tank cap. Pressure may have built
up in the tank!
It is not wise to add more engine oil than specified to
ensure safe operation. This will only result in a higher
production of combustion residues which will pollute the
environment and clog the exhaust channel in the cylinder
as well as the muffler. In addition, fuel consumption will
rise and performance will decrease.
Chain oil
Use an oil with adhesive additive for lubricating the chain and
guide bar. The adhesive additive prevents the oil from being
flung off the chain too quickly.
We recommend the use of chain oil which is bio-degradable in
order to protect the environment. The use of bio-degradable oil
may even be required by local regulations.
The chain oil BIOTOP sold by MAKITA is made of special
vegetable oils and is 100% bio-degradable. BIOTOP has been
granted the "blue angel" (Blauer Umweltschutz-Engel) for
being particularly environment-friendly (RAL UZ 48).
AVOID SKIN AND EYE CONTACT
Mineral oil products degrease your skin. If your skin
comes in contact with these substances repeatedly
and for an extended period of time, it will desiccate.
Various skin deseases may result. In addition, allergic
reactions are known to occur.
Eyes can be irritated by contact with oil. If oil comes
into your eyes, immediately wash them with clear
water.
If your eyes are still irritated, see a doctor immediately!
D
BIOTOP chain oil is available in the following sizes:
1 l
5 l
20 l
Bio-degradable oil is stable only for a limited period of
time. It should be used within 2 years from the date of
manufacture (printed on the container).
E
21
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