Zenoah G3300EZ, G3300 User Manual

G3300 / G3300EZ

848C3593A1 (411)

OWNER’S MANUAL

G

G
B

B

CHAINSAWS

G3300

G3300EZ

GB-1

G3300 / G3300EZ

EXPLANATION OF SYMBOLS AND SAFETY WARNINGS

Read operator's instruction
book before operating this
machine.

Use the chain saw
with two hands.

Read, understand and
follow all warnings.

WARNING!!!

RISK OF DAMAGING HEARING

Wear head, eye and ear
protection.

Warning! Danger of
kickback.

GB-2

MAY INVOLVE A DAILY LEVEL OF PERSONAL EXPOSURE TO NOISE

IN NORMAL CONDITIONS OF USE, THIS MACHINE

FOR THE OPERATOR EQUAL TO OR GREATER THAN

85 dB(A)

MODEL

EN 608-ISO 7182

G3300

G3300EZ

APPROVAL NUMBER OF CE EXHAUST EMISSION REGULATION (2002/88/EC)

SOUND LEVEL VIBRATION LEVEL

2000/14/EC

LpA

98.9 dB(A) 112 dB(A)

LwA

guaranteed

EN 608-ISO 7505

Front handle Rear handle

2

4.5 m/s

e13*97/68SH2G3*2002/88*0087*00

4.9 m/s

2

DECLARATION OF CONFORMITY TO MACHINES DIRECTIVE

(Directive 98/37/EC, 89/336/EEC)
and to the regulations governing transposition
Internal control production

MANUFACTURER :
No. 9, 1-Chome

MINAMIDAI, KAWAGOE City
SAITAMA, JAPAN

DECLARES THAT THE DESIGN OF THE MACHINE DESCRIBED BELOW:

Model : G3300 G3300EZ
Serial no. : 000101 and up
Make : KOMATSU ZENOAH

CONFORMS TO THE REQUIRMENTS OF THE MODIFIED MACHINES DIRECTIVE
(Directive 98/37/EC) AND TO THE NATIONAL REGULATIONS GOVERNING ITS
TRANSPOSITION ABROAD : AND

THAT IT HAS BEEN ISSUED WITH A “CE”CERTIFICATE, NO. M.0303.04.3211
(G3300), M.0303.04.3212 (G3300EZ) BY THE ISTITUTO CERTIFICAZIONE
EUROPEA PALAZZO DEL VESCOVO - V. GARIBALDI, 20 40011 ANZOLA DELL’
EMILIA - ITALY

KOMATSU ZENOAH

G3300 / G3300EZ

G
B

Signed in Saitama, Japan

Isamu NAKAZATO
General Manager, Quality Assurance Department

16 / 2 / 2004

Contents

1. For Safe Operation ................................................................... 4

2. Explanation of Symbols on the Machine .................................. 6

3. Installing Guide Bar and Saw Chain......................................... 6

4. Fuel and Chain Oil .................................................................... 8

5. Operating the Engine ............................................................... 9

6. Sawing .................................................................................... 11

7. Maintenance ........................................................................... 12

8. Maintenance of Saw Chain and Guide Bar ............................ 14

9. Troubleshooting Guide ........................................................... 15

10. Specifications ......................................................................... 16

GB-3

G3300 / G3300EZ

1. For safe operation

1. Never operate a chain saw when
you are fatigued, ill, or upset, or
under the influence of medica­tion that may make you drowsy,
or if you are under the influence
of alcohol or drugs.

2. Use safety footwear, snug fitting
clothing and eye, hearing and
head protection devices.
Use the vibration-proof glove.

3. Keep the saw chain sharp and
the saw, including the A V system,
well maintained. A dull chain will
increase cutting time, and press­ing a dull chain through wood will
increase the vibrations transmit­ted to your hands. A saw with
loose components or with dam­aged or worn AV buf fers will also
tend to have higher vibration lev­els.

4. All the above mentioned precau­tions do not guarantee that you
will not sustain whitefinger dis­ease or carpal tunnel syndrome.
Therefore, continual and regular
users should monitor closely the
condition of their hands and fin­gers.
If any of the above symptoms ap­pear , seek medical advice imme­diately.

9. Never start cutting until you have
a clear work area, secure foot­ing, and a planned retreat path
from the falling tree.

10.Always hold the chain saw firmly
with both hands when the engine
is running. Use a firm grip with
thumb and fingers encircling the
chain saw handles.

11.Keep all parts of your body away
from the saw chain when the en­gine is running.

12.Before you start the engine,
make sure the saw chain is not
contacting anything.

GB-4

5. Always use caution when han­dling fuel. Wipe up all spills and
then move the chain saw at least
3 m from the fueling point before
starting the engine.

6. Eliminate all sources of sparks or
flame (i.e. smoking, open flames,
or work that can cause sparks)
in the areas where fuel is mixed,
poured, or stored.

7. Do not smoke while handling fuel
or while operating the chain saw.

8. Do not allow other persons to be
near the chain saw when start­ing or cutting. Keep bystanders
and animals out of the work area.
Children, pets and bystanders
should be a minimum of 10 m
away when you start or operate
the chain saw.

13.Always carry the chain saw with
the engine stopped, the guide
bar and saw chain to the rear,
and the muffler away from your
body.

14.Always inspect the chain saw be­fore each use for worn, Ioose, or
damaged parts. Never operate
a chain saw that is damaged, im­properly adjusted, or is not com­pletely and securely assembled.
Be sure that the saw chain stops
moving when the throttle control
trigger is released.

15.All chain saw service, other than
the items listed in the Owner’s
Manual, should be performed by
competent chain saw service
personnel. (E.g., if improper tools
are used to remove the flywheel,
or if an improper tool is used to
hold the flywheel in order to re-

G3300 / G3300EZ

move the clutch, structural dam­age to the flywheel could occur
which could subsequently cause
the flywheel to disintegrate.)

16.Always shut off the engine be­fore setting it down.

17.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.

18.When cutting a limb that is un­der tension, be alert for spring­back so that you will not be
struck when the tension in the
wood fibers is released.

19.Never cut in high wind, bad
weather , when visibility is poor or
in very high or low temperatures.
Always check the tree for dead
branches which could fall during
the felling operation.

20.Keep the handles dry, clean and
free of oil or fuel mixture.

21.Operate the chain saw only in
well ventilated areas. Never start
or run the engine inside a closed
room or building. Exhaust fumes
contain dangerous carbon mon­oxide.

22.Do not operate the chain saw in
a tree unless specially trained to
do so.

23.Guard against kickback. Kick­back is the upward motion of the
guide bar which occurs when the
saw chain at the nose of the
guide bar contacts an object.
Kickback can lead to dangerous
loss of control of the chain saw.

saw chain in the cut. Tip contact
in some cases may cause a light­ning fast reverse reaction,kicking
the guide bar up and back to­wards the operator. Pinching the
saw chain along the top of the
guide bar may push the guide
bar rapidly back towards the op­erator. Either of these reactions
may cause you to Iose control of
the saw, which could result in
serious personal injury.

• Do not rely exclusively on the
safety devices built into your saw.
As a chain saw user you should
take several steps to keep cut­ting jobs free from accident or
injury.

(1) With a basic understanding of

kickback you can reduce or
eliminate the element of surprise.
Sudden surprise contributes to
accidents.

(2) Keep a good grip on the saw with

both hands, the right hand on the
rear handle, and the left hand on
the front handle, when the engine
is running. Use a firm grip with
thumbs and fingers encircling
the chain saw handles. A firm
grip will help you reduce kick­back and maintain control of the
saw.

(3) Make certain that the area in

which you are cutting is free from
obstructions. Do not let the nose
of the guide bar contact a log,
branch, or any other obstruction
which could be hit while you are
operating the saw.

(4) Cut at high engine speeds.

G
B

24.When transporting your chain
saw, make sure the appropriate
guide bar scabbard is in place.

KICKBACK SAFETY PRECAU­TIONS FOR CHAIN SAW USERS

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

(5) Do not overreach or cut above

shoulder height.

(6) Follow the manufacturer’ s sharp-

ening and maintenance instruc­tions for the saw chain.

(7) Only use replacement bars and

chains specified by the manufac­turer or the equivalent.

GB-5

G3300 / G3300EZ

2. Explanation of Symbols on the Machine

For safe operation and maintenance, symbols are carved in relief on the machine.
According to these indications, please be careful not to make any mistake.

The port to refuel “MIX GASOLINE”
Position: Fuel cap

The port to top up chain oil
Position: Oil cap

Setting the switch to the “O” position,
the engine stops immediately.
Position: Rear-left of the unit

If you pull out the choke knob, you can
set the choke as a cold start mode.
Position: Upper-right of the aircleaner
cover

The screw under the “H” stamp is The
High-speed adjustment screw.
The screw under the “L” stamp is The
Slow-speed adjustment screw.
The screw at the left of the “T” stamp is
the Idle adjustment screw.
Position: Left side of the rear handle

Shows the directions that the chain
brake is released (white arrow) and ac­tivated (black arrow).
Position: Front of the chain cover

If you turn the rod by screwdriver follow
the arrow to the "MAX" position, the chain
oil flow more, and if you turn to the "MIN"
position, less.
Position: Bottom of the power unit

3. Installing Guide Bar and Saw Chain

A standard saw unit package contains the items as illustrated.

(1) Power unit (2) Bar protector
(3) Guide bar (4) Saw chain
(5) Plug wrench

Open the box and install the guide bar and the saw
chain on the power unit as follows:

The saw chain has very sharp edges. Use
thick protective gloves for safety.

[G3300]

1. Pull the guard towards the front handle to check that
the chain brake is not engaged.

2. Loosen the nut and remove the chain cover.

3. Gear the chain to the sprocket and, while fitting the
saw chain around the guide bar, mount the guide
bar to the power unit. Adjust the position of the chain
tensioner.

Pay attention to the correct direction of the
saw chain.

(1)

(1) Moving direction

(2)

(3)

4. Fit the chain cover to the power unit and fasten the
nut to finger tightness.

5. While holding up the tip of the bar, adjust the chain
tension by turning the tensioner screw until the tie
straps just touch the bottom side of the bar rail.

(2) T ensioner nut
(3) Chain cover

GB-6

(1) T ensioner screw
(2) Loosen
(3) Tighten

6. Tighten the nut securely with the bar tip held up (12
~ 15 N·m). Then check the chain for smooth rotation
and proper tension while moving it by hand. If nec­essary, readjust with the chain cover loose.

7. Tighten the tensioner screw.

Note: A new chain will expand its length in the beginning of use.
Check and readjust the tension frequently as a loose chain can
easily derail or cause rapid wear of itseif and the guide bar.

G3300 / G3300EZ

While temporary tightening, you may hear the
“click” sound. But do not stop tightening at
that time. This sound does not mean that the
saw chain and guide bar were assembled.

5. While holding the chain cover , temporary tighten the
nut assembly and fix the bar and chain cover. (You
can fix them even by tightening the lever.)
Check if the saw chain fits on the bar rail. If not,
readjust by loosen the nut assembly.

(3)

(1) Nut assembly
(2) Chain cover
(3) Lever

(1)(2)

(4)

(4)

(4) Proper tension,
No gap

G
B

[G3300EZ]

1. Pull the guard towards the front handle to check that
the chain brake is not engaged.

2. Loosen the nut assembly and dismount the chain
cover.

(1)

(1) Nut assembly
(2) Chain cover

(2)

(3)

(3) Loosen

3. Set the guide bar to the power unit, gear the chain
to the sprocket of clutch drum and fit it into the groove
of the bar and the sprocket at the tip of the bar.

• Pay attention to the correct direction of the
saw chain.

• Make sure to fit the chain into the groove
of the bar and the sprocket. If not, you may
fail to tighten the chain.

(2)

(1)

(3)

(1) Moving direction

(4)

(2) Sprocket of the
clutch drum
(3) Guide bar
(4) Sprocket of the bar

4. Move the guide bar back and forth to adjust the po­sition of projection A, B and C to fit in each hole. By
inserting the projections into the bottom of holes,
attach the chain cover securely.

6. After fixing them, attach the bar protector for your
safety.
Pull the lever up and tighten it securely.

Tightening torque:

7.9 ~ 12.8 N·m {80~130kgf-cm}

(3)

(1)

(2)

(1) Lever
(2) Bar protector
(3) Fully tighten

7. If the chain becomes loose while using the unit, at­tach the bar protector and loosen the nut assembly
around 4 turns.
Dismount the protector and check if the chain fits
on the bar rail. If not, readjust by loosen the nut as­sembly.
Temporary tighten the nut assembly. The chain is to
be tensioned automatically . After fixing the guide bar,
mount the protector and tighten the lever securely
for fully tightening.

(1)

(1) Loosen (2) Bar protector

(2)

NOTE: A new chain will expand its length in the beginning of use.
Check and readjust the tension frequently as a loose chain can
easily derail or cause rapid wear of itself and the guide bar.

• Replace the guide plate when its file is worn.

(3)

(1)

(2)

(1) Projection A
(2) Projection B
(3) Projection C

GB-7

G3300 / G3300EZ

4. Fuel and Chain Oil

■ FUEL

• Gasoline is very flammable. Avoid smoking or

bringing any flame or sparks near fuel. Make sure
to stop the engine and allow it cool before refuel­ing the unit. Select outdoor bare ground for fuel­ing and move at least 3 m (10 ft) away from the
fueling point before starting the engine.

• The Komatsu Zenoah engines are lubricated by oil
specially formulated for air-cooled 2-cycle gasoline
engine use. If Komatsu Zenoah oil is not available,
use an anti-oxidant added quality oil expressly labeled
for air-cooled 2-cycle engine use (JASO FC GRADE
OIL or ISO EGC GRADE).

• Do not use BIA or TCW (2-stroke water -cooling type)
mixed oil.

■ RECOMMENDED MIXING RATIO

GASOLINE 50 : OIL 1

• Exhaust emission are controlled by the funda­mental engine parameters and components (eq.,
carburation, ignition timing and port timing) with­out addition of any major hardware or the intro­duction of an inert material during combustion.

• These engines are certified to operate on unleaded
gasoline.

• Make sure to use gasoline with a minimum octane
number of 89RON (USA/Canada: 87AL).

• If you use a gasoline of a lower octane value than
prescribed, there is a danger that the engine tem­perature may rise and an engine problem such as
piston seizing may consequently occur.

• Unleaded gasoline is recommended to reduce the
contamination of the air for the sake of your health
and the environment.

• Poor quality gasolines or oils may damage sealing
rings, fuel lines or fuel tank of the engine.

■ HOW TO MIX FUEL

4. Pour in the rest of gasoline and agitate again for at
least one minute. As some oils may be difficult to
agitate depending on oil ingredients, sufficient agi­tation is necessary for the engine to last long. Be
careful that, if the agitation is insufficient, there is an
increased danger of early piston seizing due to ab­normally lean mixture.

5. Put a clear indication on the outside of the container
to avoid mixing up with gasoline or other contain­ers.

6. Indicate the contents on outside of container for easy
identification.

■ FUELING THE UNIT

1. Untwist and remove the fuel cap. Rest the cap on a
dustless place.

2. Put fuel into the fuel tank to 80% of the full capacity.

3. Fasten the fuel cap securely and wipe up any fuel
spillage around the unit.

1. Select bare ground for fueling.

2. Move at least 10 feet (3 meters) away from the fuel­ing point before starting the engine.

3. Stop the engine before refueling the unit. At that time,
be sure to sufficiently agitate the mixed gasoline in
the container.

■ FOR YOUR ENGINE LIFE, AVOID:

1. FUEL WITH NO OIL (RAW GASOLINE) – It will cause
severe damage to the internal engine parts very
quickly.

2.

GASOHOL – It can cause deterioration of rubber and/
or plastic parts and disruption of engine lubrication.

3. OIL FOR 4-CYCLE ENGINE USE – It can cause spark
plug fouling, exhaust port blocking, or piston ring
sticking.

4. Mixed fuels which have been left unused for a
period of one month or more may clog the carbu­retor and result in the engine failing to operate prop­erly.

5. In the case of storing the product for a long period
of time, clean the fuel tank after rendering it empty.
Next, activate the engine and empty the carburetor
of the composite fuel.

6. In the case of scrapping the used mixed oil con­tainer, scrap it only at an authorized repository site.

Note: As for details of quality assurance, read the description in
the section Limited Warranty carefully . Moreover, normal wear and
change in product with no functional influence are not covered by
the warranty. Also, be careful that, if the usage in the instruction
manual is not observed as to the mixed gasoline, etc. described
therein, it may not be covered by the warranty.

■ CHAIN OIL

Use motor oil SAE #10W-30 all year round or SAE
#30 ~ #40 in summer and SAE #20 in winter.

• Pay attention to agitation.

1. Measure out the quantities of gasoline and oil to be
mixed.

2. Put some of the gasoline into a clean, approved fuel
container.

3. Pour in all of the oil and agitate well.

GB-8

Note: Do not use wasted or regenerated oil that can cause damage
to the oil pump.

5. Operating the Engine

It is very dangerous to run a chainsaw that
mounts broken parts or lacks any parts.
Before starting engine, make sure that all the
parts including bar and chain are installed
properly.

■ ST ARTING THE ENGINE

1. Fill fuel and chain oil tanks respectively, and tighten
the caps securely.

G3300 / G3300EZ

G
B

Do not start the engine while the chain saw
hangs in one hand. The saw chain may touch
your body. This is very dangerous.

(2)

(1)

(1) Fuel
(2) Chain oil

2. Set the switch to “I” position.

(1)

(1) Switch

3. Continuously push the priming bulb until fuel comes
in the bulb.

(1)

(1) Priming bulb

6. When engine has ignited, pull the throttle slightly to
return the choke knob to the original position. If the
engine stops, pull the starter again without pulling
out the choke knob.

7. Allow the engine to warm up with the throttle lever
pulled slightly.

Keep clear of the saw chain as it will start
rotatIng upon starting of engine.

■ CHECKING THE OIL SUPPLY

Make sure to set up the bar and the chain
when checking the oil supply.
If not, the rotating parts may be exposed. It is
very dangerous.

After starting the engine, run the chain at medium speed
and see if chain oil is scattered off as shown in the fig­ure.

(1) Chain oil

4. Pull out the choke knob completely to close the
choke.

(1)

(1) Choke knob
(2) Close

(2) (3)

(3) Open

NOTE: When restarting immediately after stopping the engine, you
need not to pull out the choke knob.

5. While holding the saw unit securely on the ground,
pull the starter rope vigorously.

The chain oil flow can be changed by inserting a
screwdriver in the hole on bottom of the clutch side.
Adjust according to your work conditions.

(1) Rich
(2) Lean
(3) Chain oil flow adjusting

■ ADJUSTING THE CARBURETOR

(2)

(1) L needle
(2) H needle
(3) Idle adjusting screw

(1)

(3)

GB-9

G3300 / G3300EZ

(1)

The carburetor on your unit has been factory adjusted,
but may require fine tuning due to a change in operat­ing conditions.
Before adjusting the carburetor, make sure that the pro­vided air/fuel filters are clean and fresh and the fuel prop­erly mixed.

When adjusting, take the following steps:

Note: Be sure to adjust the carburetor with the bar chain attached.

1. H and L needles are restricted within the number of
turn as shown below.

H needle : -1/4
L needle : -1/4

2. Start the engine and allow it to warm up in low speed
for a few minutes.

3. Turn the idle adjusting screw (T) counterclockwise
so that the saw chain does not turn. If the idling
speed is too slow, turn the screw clockwise.

4. Make a test cut and adjust the H needle for best
cutting power, not for maximum speed.

■ CHAIN BRAKE

This machine is equipped with an automatic brake to
stop saw chain rotation upon occurrence of kickback
during saw cutting. The brake is automatically operated
by inertial force, which acts on the weight fitted inside
the front guard.
This brake can also be operated manually with the front
guard turned down to the guide bar.
To release the brake, pull up the front guard toward the
front handle till a “click” sound is heard.

(3)

In case the brake is not effective, ask our dealer for
inspection and repairs.
If the engine keeps rotating at high speed with the brake
engaged, the clutch will overheat causing trouble.
When the brake engages during operation, immediately
release the throttle lever to stop the engine.

■ STOPPING THE ENGINE

1. Release the throttle lever to allow the engine to idle
for a few minutes.

2. Set the switch to the “O” (STOP) position.

(1) Switch

■ CARBURETOR ANTI-FREEZE MECHANISM

Operating chain saws in temperatures of 0 – 5°C at times
of high humidity may result in ice forming within the car­buretor, and this in turn may cause the output power of
the engine to be reduced or for the engine to fail to op­erate smoothly.
This product has accordingly been designed with a ven­tilation hatch on the right side of the surface of the insu­lator cover to allow warm air to be supplied to the en­gine and to thereby prevent icing from occurring.
Under normal circumstances the product should be
used in the normal operating mode, i.e., in the mode to
which it is set at the time of shipment. However when
the possibility exists that icing may occur , the unit should
be set to operate in the anti-freeze mode before use.

(1) (2)

(1) Release (2) Activate (3) Front guard

[Caution]

Be sure to confirm brake operation during daily inspec­tion.

How to confirm:

1) Turn off the engine.

2) Holding the chain saw horizontally, release your hand
from the front handle, hit the tip of the guide bar to a
stump or a piece of wood, and confirm brake op­eration. Operating level varies by bar size.

GB-10

Stop the engine, remove the cylinder cover and install
the grommet A to the appropriate position of the mode.

See ■ Maintenance part for how to remove the cylinder
cover.

(1)

(3)

(4)

(5)

(1) Normal operation mode (2) Anti-freeze mode (3) Insulator
(4) Carburetor (5) Grommet A

(2)

(5)

6. Sawing

G3300 / G3300EZ

• Before proceeding to your job,
read the section “For Safe
Operation”. It is recommended
to first practice sawing easy
logs. This also helps you get
accustomed to your unit.

• Always follow the safety regu­lations. The chain saw must
only be used for cutting wood.
It is forbidden to cut other
types of material. Vibrations
and kickback vary with differ­ent materials and the require­ments of the safety regulations
would not be respected. Do
not use the chain saw as a le­ver for lifting, moving or split­ting objects. Do not lock it over
fixed stands. It is forbidden to
hitch tools or applications to
the PTO other than those
specified by the manufacturer.

• It is not necessary to force the saw into the
cut. Apply only light pressure while running the
engine at full throttle.

• When the saw chain is caught in the cut, do
not attempt to pull it out by force, but use a
wedge or a lever to open the way.

■ GUARD AGAINST KICKBACK

gine at full speed. If the chain is slow
to stop or does not stop, replace the
brake band and clutch drum before
use.

• It is extremely important that the
chain brake be checked for proper
operation before each use and that
the chain be sharp in order to main­tain the kickback safety level of this
saw. Removal of the safety devices,
inadequate maintenance, or incor­rect replacement of the bar or chain
may increase the risk ot serious per­sonal injury due to kickback.

■ FELLING A TREE

Felling direction

Notch cut

1. Decide the felling direction considering the wind,
lean of the tree, location of heavy branches, ease of
completing the task after felling and other factors.

2. While clearing the area around the tree, arrange a
good foothold and retreat path.

3. Make a notch cut one-third of the way into the tree
on the felling side.

4. Make a felling cut from the opposite side of the notch
and at a level slightly higher than the bottom of the
notch.

When you fell a tree, be sure to warn neigh­boring workers of the danger.

Felling cut

G
B

• This saw is equipped with a chain
brake that will stop the chain in the
event of kickback if operating prop­erly . You must check the chain brake
operation before each usage by run­ning the saw at full the throttle for I ­2 seconds and pushing the front
hand guard forward. The chain
should stop immediately with the en-

Bucking and Limbing

• Always ensure your foothold. Do not stand
on the log.

• Be alert to the rolling over of a cut log. Es­pecially when working on a slope, stand
on the uphill side of the log.

• Follow the instructions in “For Safe Opera­tion” to avoid kickback of the saw.

Before starting work, check the direction of bending
force inside the log to be cut. Always finish cutting from
the opposite side of the bending direction to prevent
the guide bar from being caught in the cut.

GB-11

G3300 / G3300EZ

A log lying on the ground

Saw down halfway, then roll the log over and cut from
the opposite side.

A log hanging off the ground

In area A, saw up from the bottom one-third and finish
by sawing down from the top. In area B, saw down from
the top one-third and finish by sawing up from the bot­tom.

Cutting the limbs of Fallen Tree

First check to which side the limb is bent. Then make
the initial cut from the bent side and finish by sawing
from the opposite side.

Be alert to the springing back of a cut limb.

Pruning of Standing Tree

Cut up from the bottom, finish down from the top.

• Do not use an unstable foothold or ladder.

• Do not overreach.

• Do not cut above shoulder height.

• Always use both your hands to hold the
saw.

7. Maintenance

Before cleaning, the inspecting or repairing
the unit, make sure that engine has stopped
and is cool. Disconnect the spark plug to pre­vent accidental starting.

■ MAINTENANCE AFTER EACH USE

1. Oiling port

Dismount the guide bar and check the oiling port for
clogging.

(1)

(1) Oiling port

2. Guide bar

When the guide bar is dismounted, remove sawdust in
the bar groove and the oiling port.
Grease the nose sprocket from the feeding port on the
tip of the bar.

(1) Oiling port
(2) Grease port
(3) Sprocket

3. Others

Check for fuel leakage and loose fastenings and dam­age to major parts, especially handle joints and guide
bar mounting. If any defects are found, make sure to
have them repaired before operating the saw again.

GB-12

G3300 / G3300EZ

■ PERIODICAL SERVICE POINTS
(Every 25 hours use)

1. Air cleaner

1. Loosen the knob by moving it to the direction A until
it clicks.

2. Pull the cover to the direction B and unfasten the
hooks so that the cover can be detached.

3. When fixing the cylinder cover back into its original
position, align the 3 hooks(3), move the cover in the
opposite direction of removal until it clicks.

A

(1)

(2)

B

(2)

(1)

(1) Knob
(2) Projection

(3)

4. Remove the cleaner element by unfastening the
hooks. Split the element into halves and wash in neu­tral detergent and warm water. After cleaning, dry
the element completely.
Exchange the element with new one in case it has
been contaminated.
When reinstalling the element to the unit, fit the hook
A and the hole, and then inset the element to the
unit.

NOTE: Make sure that the hook A is correctly fit with the hole to
reduce the chance of damage of the hook A.

(3) Hook

2. Fuel filter

Using a wire hook, take out the filter from the filler port.
Clean away the dirt attached to the filter. Replace with a
new one if needed.

(1)

(1) Fuel filter

Note: Never bend the filter pipe when returning it.

3. Spark plug

Champion
RCJ-7Y

Clean the electrodes with a wire brush and reset the
gap to 0.65 mm as necessary.

4. Cylinder fins

Dust clogging between the cylinder fins will cause over­heating of the engine. Periodically check and clean the
cylinder fins after removing the air cleaner and the cyl­inder cover. When installing the cylinder cover, make
sure that switch wires and grommets are positioned
correctly in place.

G
B

(4)

(3)

(1)

(5)

(2)

(2)

(1) Hooks
(2) Air cleaner element
(3) Hole
(4) Hook A
(5) Hook B

Note: Be sure to block the air intake hole.

5. Sprocket

0.5mm

Check for cracks and for excessive wear interfering with
the chain drive. If the wear is considerable, replace it
with new one. Never fit a new chain on a worn sprocket,
or a worn chain on a new sprocket.

GB-13

G3300 / G3300EZ

8. Maintenance of Saw Chain and Guide Bar

■ Saw Chain

It is very important for smooth and safe op­eration to always keep the cutters sharp.

The cutters need to be sharpened when:

• Sawdust becomes powder-like.

•You need extra force to saw in.

• The cut path does not go straight.

•Vibration increases.

• Fuel consumption increases.

Cutter setting standards:

Be sure to wear safety gloves.

Before filing:

• Make sure the saw chain is held securely.

•Make sure the engine is stopped.

• Use a round file of proper size for the chain.
Chain type: 91VG
File size: 5/32 in (4.0 mm)

Place the file on the cutter and push straight forward.
Keep the file position as illustrated.

Be sure to round off the fr ont edge to reduce
the chance of kickback or tie-strap breakage.

Make sure every cutter has the same length and edge
angles as illustrated.

Cutter length

Filing angle

Side plate angle

Top plate cutting angle

■ Guide Bar

• Reverse the bar occasionally to prevent partial wear .

• The bar rail should always be square. Check for wear
of the bar rail. Apply a ruler to the bar and the out-

After each cutter has been filed, check the depth gauge
and file it to the proper level as illustrated.

Appropriate gauge checker

Make the shoulder round

91VG .025

Depth gauge standard

″″

″ (0.64 mm)

″″

side of a cutter. If a gap is observed between them,
the rail is normal. Otherwise, the bar rail is worn.
Such a bar needs to be corrected or replaced.

Ruler

Gap

No gap

Chain tilts

WARNING:

This saw is equipped with one of the following low
kickback bar/chain combinations:

Komatsu Zenoah Part Number

Saw Model Bar Size Guide Bar Saw Chain

G3300/G3300EZ 14 848CB24G23 2931-52210

GB-14

9. Troubleshooting Guide

G3300 / G3300EZ

Case 1. Starting failure

Make sure the icing prevention system is not
working.

Check fuel for water
or substandard mix­ture.

d

Check for engine
flooding.

Replace with proper

a

fuel.

Remove and dry the
spark plug.

a

Then pull the starter
again with no choke.

d

Check spark ignition.

Case 2. Lack of power/Poor acceleration/

Rough idling

Check fuel for water
or substandard mix­ture.

Replace with a new

a

plug.

Replace with proper

a

fuel.

d

Check air filter and
fuel filter for clog­ging.

a

Clean.

Case 3. Oil does not come out

Check oil for sub­standard quality.

a

Replace.

d

Check oil passage
and ports for clog­ging.

If the unit seems to need further service, please consult
with an authorized service shop in your area.

a

Clean.

G
B

d

Check carburetor
for inadequate ad­justment.

Readjust speed

a

needles.

GB-15

G3300 / G3300EZ

10. Specifications

Power unit:

Displacement (cm3): ............................................. 31.8

Fuel: ................ Mixture (Gasoline 50 : Two-cycle oil 1)

Fuel tank capacity (cm3): ....................................... 270

Chain oil: ................................. Motor oil SAE# 10W-30

Oil tank capacity (cm3):.......................................... 200

Carburetor:.....................Diaphragm type (Walbro WT)

lgnition system: ..................................... Pointless (TCl)

Spark plug:......................................Champion RCJ-7Y

Oil feeding system: ............................ Automatic pump

Power ........................................ 1.35/10,000 (kw/min-1)

Max speed ............................................. 12,500 (min-1)

Idle speed ................................................ 2,900 (min-1)

Sprocket (Teeth x Pitch): ................................ 6T x 3/8″

Dimensions (L x W x H) (mm): ................ 380x230x250

Limited warranty

Should any failure occur on the product under normal
operating conditions within the applicable warranty pe­riod, the failed part will be replaced or repaired free of
charge by a KOMATSU ZENOAH authorized dealer.

WARRANTY PERIOD: 1 year (6 months if used pr ofes­sionally, and 30 days if used for rental purpose) from
the date of initial purchase.

THE PURCHASER SHALL BEAR COSTS OF TRANS­PORTING THE UNIT TO AND FROM THE KOMATSU
ZENOAH DEALER.

THE PURCHASER SHALL NOT BE CHARGED FOR DI­AGNOSTIC LABOR WHICH LEADS TO THE DETERMI­NATION THAT A WARRANTED PART IS DEFECTIVE, IF
THE DIAGNOSTIC WORK IS PERFORMED AT THE
KOMATSU ZENOAH DEALER.

THE PURCHASER OR OWNER IS RESPONSIBLE FOR
THE PERFORMANCE OF THE REQUIRED MAINTE­NANCE AS DEFINED BY THE MANUFACTURER IN THE
OWNER/OPERATOR MANUAL.

ANY WARRANTED PART WHICH IS NOT SCHEDULED
FOR REPLACEMENT AS REQUIRED MAINTENANCE,
OR WHICH IS SCHEDULED ONLY FOR REGULAR IN­SPECTION TO THE EFFECT OF REP AIR OR “REPLACE
AS NECESSARY” SHALL BE WARRANTED FOR THE
WARRANTY PERIOD. ANY W ARRANTED PART WHICH
IS SCHEDULED FOR REPLACEMENT AS REQUIRED
MAINTENANCE SHALL BE WARRANTED FOR THE
PERIOD OF TIME UP TO THE FIRST SCHEDULED
REPLACEMNET POINT FOR THE PART.

ANY REPLACEMENT PART THAT IS EQUIVALENT IN
PERFORMANCE AND DULABILITY MAY BE USED IN
NON-WARRANTY MAINTENANCE OR REPAIRS, AND

Dry weight
Power unit only (kg):

G3300: ............................................................... 3.4

G3300EZ: ........................................................... 3.5

Cutting head:

Guide bar

Type: ................................................ Sprocket nose

Size (in. (mm)):........................................... 14 (350)

Saw chain

Type: ................................................. Oregon 91VG

Pitch (in. (mm)):........................................ 3/8 (9.53)

Gauge (in. (mm)):................................... 0.05 (1.27)

Specifications are subject to change wihout notice.

SHALL NOT REDUCE THE WARRANTY OBLIGATION
OF THE COMPANY.

THE COMP ANY IS LIABLE FOR DAMAGES TO OTHER
ENGINE COMPONENTS CAUSED BY THE FAIRURE OF
A WARRANTED PARTS STILL UNDER WARRANTY.

THE W ARRANTY DOES NOT APPLY T O THOSE UNITS
WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF
INSTRUCTION LISTED IN THE OWNER/OPERATOR
MANUAL FOR PROPER USE AND MAINTENANCE OF
THE UNITS ACCIDENT MISHANDLING, ALTERATION,
ABUSE, IMPROPER LUBULICATION, USE OF ANY
PARTS OR ACCESSARIES OTHER THAN THOSE
SPECIFIED BY THE COMPANY, OR OTHER CAUSES
BEYOND THE CONP ANY'S CONTROL.

THIS WARRANTY DOES NOT COVER THOSE PARTS
REPLACED BY NORMAL WEAR OR HARMLESS
CHANGES IN THEIR APPEARANCE.

THERE ARE NO OTHER EXPRESS WARRANTIES.
IMPLIED WARRANTIES INCLUDING THOSE OF MER-

CHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE LIMITED TO TWO (2) YEARS OF HOME
USE [ONE (1) YEAR FOR ANY OTHER USE] FROM THE
ORIGINAL DELIVERY DATE.

LIABILITIES FOR INCIDENT AL OR CONSEQUENTIAL
DAMAGE UNDER ANY AND ALL W ARRANTIES ARE
EXCLUDED.

IF YOU NEED TO OBTAIN MORE INFORMATION,
PLEASE CALL YOUR NEAREST SERVICE CENTER, OR
CHECK PLEASE KOMATSU ZENOAH WEB SITE http://
www.zenoah.net

GB-16