Zenoah Chainsaw G2000T User Manual

848C0593A0 (704)  
G
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OWNER’S MANUAL  
CHAIN SAW  
G2000T  
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G2000T  
1. For safe operation  
WARNING  
This chainsaw has been especially designed for tree  
maintenance and should therefore only be used by  
trained operators when working on trees.  
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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.  
10. Keep all parts of your body away from  
the saw chain when the engine is run-  
ning.  
2. Use safety footwear, snug fitting  
clothing and eye, hearing and head  
protection devices.  
Use the vibration-proof glove.  
11. Before you start the engine, make  
sure the saw chain is not contacting  
anything.  
12. 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.  
3. Keep the saw chain sharp and the  
saw, including the AV 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 buffers will also  
tend to have higher vibration levels.  
13. Always inspect the chain saw before  
each use for worn, Ioose, or dam-  
aged 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.  
14. 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  
remove the clutch, structural damage  
to the flywheel could occur which  
could subsequently cause the fly-  
wheel to disintegrate.)  
4. 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 en-  
gine.  
5. 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.  
6. Do not smoke while handling fuel or  
while operating the chain saw.  
15. Always shut off the engine before  
setting it down.  
7. Do not allow other persons to be near  
the chain saw when starting or cut-  
ting. 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 oper-  
ate the chain saw.  
16. Use extreme caution when cutting  
small size brush and saplings be-  
cause slender material may catch the  
saw chain and be whipped toward  
you or pull you off balance.  
17. When cutting a limb that is under ten-  
sion, be alert for spring- back so that  
you will not be struck when the ten-  
sion in the wood fibers is released.  
18. 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.  
19. Keep the handles dry, clean and free  
of oil or fuel mixture.  
8. Never start cutting until you have a  
clear work area, secure footing, and  
a planned retreat path from the fall-  
ing tree.  
9. Always hold the chain saw firmly with  
both hands when the engine is run-  
ning. Use a firm grip with thumb and  
fingers encircling the chain saw  
handles.  
GB-3  
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G2000T  
20. Operate the chain saw only in well  
ventilated areas. Never start or run  
the engine inside a closed room or  
building. Exhaust fumes contain dan-  
gerous carbon monoxide.  
handle, and the left hand on the front  
handle, when the engine is running.  
Use a firm grip with thumbs and fin-  
gers encircling the chain saw  
handles. A firm grip will help you re-  
duce kickback and maintain control  
of the saw.  
21. Do not operate the chain saw in a tree  
unless specially trained to do so.  
(3) Make certain that the area in which  
you are cutting is free from obstruc-  
tions. 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.  
(5) Do not overreach or cut above shoul-  
der height.  
22. 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 dan-  
gerous loss of control of the chain  
saw.  
(6) Follow the manufacturer’s sharpening  
and maintenance instructions for the  
saw chain.  
(7) Only use replacement bars and  
chains specified by the manufacturer  
or the equivalent.  
23. When transporting your chain saw,  
make sure the appropriate guide bar  
scabbard is in place.  
24. Never touch the cover, guide bar, saw  
chain or nut with bare hands while  
the engine is in operation or immedi-  
ately after shutting down the engine.  
Doing so could result in serious burns  
WORSE EFFECTS OF VIBRATION  
If you continue to use high-vibration tools these  
symptoms will probably get worse, for example:  
the numbness in your hands could become perma-  
nent and you won’t be able to feel things at all;  
you will have difficulty picking up small objects such  
as screws or nails;  
(3)  
because of high temperature.  
(1) muffler guard  
(2) guide bar  
(3) saw chain  
(1)  
(2)  
the vibration white finger could happen more fre-  
quently and affect more of your fingers.  
KICKBACK SAFETY PRECAUTIONS  
FOR CHAIN SAW USERS  
FOR PROTECTING YOUR BODY FROM VIBRATION  
Please observe the following matter, in order to pro-  
tect the health of your body.  
1. Always use the right tool for each job (to do the job  
more quickly and expose you to less hand-arm vi-  
bration).  
2. Check tools before using them to make sure they  
have been properly maintained and repaired to avoid  
increased vibration caused by faults or general wear.  
3. Make sure cutting tools are kept sharp so that they  
remain efficient.  
4. Reduce the amount of time you use a tool in one go,  
by doing other jobs in between.  
5. Avoid gripping or forcing a tool or workpiece more  
than you have to.  
6. Store tools so that they do not have very cold handles  
when next used.  
7. Encourage good blood circulation by:  
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.  
Tip contact in some cases may cause  
a
l i g h t n i n g f a s t r e v e r s e  
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.  
keeping warm and dry (when necessary, wear  
gloves, a hat, waterproofs and use heating pads if  
available);  
giving up or cutting down on smoking because  
smoking reduces blood flow; and massaging and  
exercising your fingers  
(1) With a basic understanding of kick-  
back 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  
DISPOSAL  
When disposing your machine, fuel or oil for the ma-  
chine, be sure to allow your local regulations.  
GB-4  
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G2000T  
WORKING WITH TREE SERVICE CHAIN-SAWS  
FROM A ROPE AND HARNESS  
The saw should only be attached to the recommended  
attachment points on the harness. These may be at  
mid-point (front or rear) or at the sides. Where possible  
attaching the saw to centre rear mid-point will keep it  
clear of climbing lines and support its weight centrally  
down the operator’s spine.  
This chapter sets out working practices to reduce the  
risk of injury from tree service chainsaws when working  
at height from a rope and harness. While it may form  
the basis of guidance and training literature, it should  
not be regarded as a substitute for formal training.  
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General requirements working at height  
Operators of tree service chainsaws working at height  
from a rope and harness should never work alone. A  
competent ground worker trained in appropriate emer-  
gency procedures should assist them.  
Operators of tree service chainsaws for this work should  
be trained in general safe climbing and work position-  
ing techniques and shall properly equipped with har-  
nesses, ropes, strops, karabiners and other equipment  
for maintaining secure and safe working positions for  
both themselves and the saw.  
Preparing to use the saw in the tree  
When moving the saw from any attachment point to an-  
other, operators should ensure it is secured in the new  
position before releasing it from the previous attachment  
point.  
The chainsaw should checked, fuelled, started and  
warmed up by the ground worker before it is sent up to  
the operator in the tree. The chainsaw should be fitted  
with a suitable strop for attaching to the operator’s har-  
ness:  
Using the chainsaw in the tree  
An analysis of accidents with these saws during tree  
service operations shows the primary cause as being  
inappropriate one-handed use of the saw. In the vast  
majority of accidents, operators fail to adopt a secure  
work position witch allows them to hold both handles of  
the saw. This results in an increased risk of injury due  
to:  
not having a firm grip on the saw if it kicks back;  
• a lack of control of the saw such that it is more liable  
to contact climbing lines and operators body (par-  
ticularly the left hand and arm)  
• losing control from insecure work position resulting in  
contact with the saw (unexpected movement during  
operation of the saw)  
a) secure the strop around the attachment point on the  
rear of the saw;  
Securing the work position for two-handed use  
To allow the operator to hold the saw with both hands,  
they should as general rule, aim for secure work posi-  
tion where they are operating the saw at:  
• hip level when cutting horizontal sections;  
• solar plexus level when cutting vertical sections.  
Where the operator is working close into vertical stems  
with a low lateral forces on their work position, then a  
good footing may be all that is needed to maintain a  
secure work position. However as operators move away  
from the stem, they will need to take steps to remove or  
counteract the increasing lateral forces by, for example,  
a re-direct of the main line via a supplementary anchor  
point or using an adjustable strop direct from the har-  
ness to a supplementary anchor point.  
b) provide suitable karabiners to allow indirect (i.e. via  
the strop) and direct attachment (i.e. at the attach-  
ment point on the saw) of saw to the operators har-  
ness;  
c) ensure the saw is securely attached when it is being  
sent up to the operator;  
d) ensure the saw it secured to the harness before it is  
disconnected from the means of ascent.  
GB-5  
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G2000T  
One-hand use of the chainsaw  
Operators should not use tree service chainsaws one-  
handed in place of unstable work positioning or in pref-  
erence to a handsaw when cutting small diameter wood  
at the branch tips.  
Tree service chainsaws should only be used one-handed  
where:  
• the operator cannot gain a work position enabling two-  
handed use; and  
• they need to support their working position with one  
hand; and  
• the saw is being used at full stretch, at right angles to  
and out of line with the operator’s body.  
Gaining a good footing at the working position can be  
assisted by use of a temporary foot stirrup created from  
an endless sling.  
Operators should never:  
• cut with the kickback zone at the tip of the chainsaw  
guide bar  
• ‘hold and cut’ sections  
Starting the saw in the tree  
• attempt to catch falling sections.  
When starting the saw in the tree, the operator should:  
a) apply the chain brake before starting;  
Freeing a trapped saw  
b) hold saw on either the left or right of the body when  
starting:  
If the saw should become trapped during cutting, op-  
erators should:  
1) on the left side hold the saw with either the left hand  
on the front handle or the right hand on the rear  
handle and thrust the saw away from the body while  
holding the pull starter cord in the other hand;  
2) on the right side, hold the saw with the right hand on  
either handle and thrust the saw away from the body  
while holding the pull starter cord in the left hand.  
• switch off the saw and attach it securely to the tree  
inboard (i.e. towards the truck side) of the cut or to a  
separate tool line;  
• pull the saw from the kerf whilst lifting the branch as  
necessary;  
• if necessary, use a handsaw or second chain saw to  
release the trapped saw by cutting a minimum of 30  
cm away from the trapped saw.  
The chain brake should always be engaged before low-  
ering a running saw onto its strop.  
Operators should always check the saw has sufficient  
fuel before undertaking critical cuts.  
Whether a handsaw or a chainsaw is used to free a stuck  
saw, the release cuts should always be outboard (to-  
ward the tips of the branch), in order to prevent the saw  
being taken with the section and further complicating  
the situation.  
GB-6  
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G2000T  
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.  
WARNING  
G
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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: Front at the top of the rear handle  
Starting the engine. If you turn the choke knob to the point of the arrow,  
you can set the starting mode as follows:  
Position: Right side of the rear handle  
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: Top of the power unit  
GB-7  
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G2000T  
3. Installing Guide Bar and Saw Chain  
A standard saw unit package contains the items as illustrated.  
Power unit  
Bar protector  
Plug wrench  
Guide bar  
Saw chain  
Screwdriver for  
carburetor adjustment  
Open the box and install the guide bar and the saw  
chain on the power unit as follows:  
WARNING  
When installing the chain cover, be sure to fit the hook  
completely at the rear end of the cover.  
WARNING  
The saw chain has very sharp edges. Use thick pro-  
tective gloves for safety.  
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.  
1. Pull the guard towards the front handle to check that  
the chain brake is not engaged.  
2. Loosen the nuts and remove the chain cover.  
3. Mount the guide bar then fit the saw chain around  
the bar and sprocket.  
Loosen  
Saw chain  
Tensioner  
Tighten  
screw  
6. Tighten the nuts securely with the bar tip held up  
(11.8-14.7 N.m./120-150 kg-cm). Then check the  
chain for smooth rotation and proper tension while  
moving it by hand. If necessary, readjust with the  
chain cover loose.  
Stud bolt  
Tensioning nut  
NOTE  
Pay attention to the correct direction of the saw chain.  
Moving direction  
Tighten  
7. Tighten the tensioner screw.  
4. Fit the chain tensioner nut into the lower hole of the  
guide bar, then install the chain cover, and fasten  
the mounting nut to finger tightness.  
WARNING  
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.  
GB-8  
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G2000T  
4. Fuel and Chain Oil  
FUEL  
4. Pour in the rest of gasoline and agitate again for at least  
one minute. As some oils may be difficult to agitate de-  
pending on oil ingredients, sufficient agitation is nec-  
essary 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.  
WARNING  
• 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 refuel-  
ing the unit. Select outdoor bare ground for fuel-  
ing and move at least 3 m (10 ft) away from the  
fueling point before starting the engine.  
G
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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.  
• The Zenoah engines are lubricated by oil specially  
formulated for air-cooled 2-cycle gasoline engine use.  
If 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).  
WARNING  
1. Select bare ground for fueling.  
2. Move at least 10 feet (3 meters) away from the fuel-  
ing 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.  
• Do not use BIA or TCW (2-stroke water-cooling type)  
mixed oil.  
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 lubri-  
cation.  
RECOMMENDED MIXING RATIO  
GASOLINE 50 : OIL 1  
<when using ZENOAH genuine oil>  
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 pe-  
riod 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.  
• Exhaust emission are controlled by the funda-  
mental engine parameters and components (eq.,  
carburation, ignition timing and port timing) with-  
out addition of any major hardware or the intro-  
duction 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 tem-  
perature may rise and an engine problem such as  
piston seizing may consequently occur.  
6. In the case of scrapping the used mixed oil con-  
tainer, scrap it only at an authorized repository site.  
NOTE  
• 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.  
As for details of quality assurance, read the descrip-  
tion 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 care-  
ful 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.  
HOW TO MIX FUEL  
WARNING  
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.  
NOTE  
Do not use wasted or regenerated oil that can cause  
damage to the oil pump.  
GB-9  
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G2000T  
5. Operating the Engine  
6. When engine has ignited, first turn in the choke knob  
to the first-stage position (2) and then pull the starter  
again to start the engine.  
7. Allow the engine to warm up with the throttle lever  
pulled slightly.  
WARNING  
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.  
WARNING  
STARTING THE ENGINE  
Normal start  
1. Fill fuel and chain oil tanks respectively, and tighten  
the caps securely.  
Keep clear of the saw chain as it will start rotating  
upon starting of engine.  
CHECKING OIL SUPPLY  
Fuel tank cap  
Oil tank cap  
WARNING  
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.  
2. Continuously push the priming bulb until fuel comes  
in the bulb.  
After starting the engine, run the chain at medium speed  
and see if chain oil is scattered off as shown in the fig-  
ure.  
Chai
3. Set the switch to “I” position.  
The chain oil flow can be changed by lever. Adjust ac-  
cording to your work conditions.  
Switch  
Safety lever  
Throttle lever  
4. Turn the choke knob to the closed position.  
NOTE  
The oil tank should become nearly empty by the time  
fuel is used up. Be sure to refill the oil tank every time  
when refueling the saw.  
(1)  
Closed  
(2)  
Open with  
(3)  
Throttle  
ADJUSTING THE CARBURETOR  
Throttle Lock release  
Idle adjusting  
screw  
NOTE  
• When restarting immediately after stopping the en-  
gine, Choke knob in the open position.  
H needle  
L needle  
5. While holding the saw unit securely on the ground,  
pull the starter rope vigorously.  
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  
WARNING  
Use genuine driver with lean angle to adjust needles.  
Be sure to adjust the carburetor with the bar chain  
attached.  
Do not start the engine while hanging the ghain  
saw with a hand. The saw chain may touch your  
body. It's very dangerous.  
GB-10  
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G2000T  
1. H and L needles are restricted within the number of  
turn as shown below.  
WARNING  
When the brake operates, release the throttle lever  
to slow down the engine speed. Continuous opera-  
tion with the brake engaged will generate heat from  
the clutch and may cause trouble.  
H needle : 13/8 ± 1/4  
L needle : 11/8 ± 1/4  
At machine inspection prior to each job, check the  
operating condition of the brake following the steps.  
When the brake operates, don’t put hands near the  
yellow cone pops up.  
2. Start the engine and allow it to warm up in low speed  
for a few minutes.  
G
B
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.  
1. Start the engine and grasp the handle securely with  
both hands.  
2. Pulling the throttle lever to maintain the chain opera-  
tion, push the brake lever (left-hand guard) down  
toward the front using the back of your left hand.  
3. When the brake operates and the chain is stopped,  
release the throttle lever.  
CHAIN BRAKE  
The chain brake is a device which stops the chain in-  
stantaneously. It can also be activated manually by  
pushing the  
brake lever (left-hand guard) down toward the front.  
When the brake operates, a yellow cone pops up from  
the base of the brake lever.  
4. Release the brake.  
Release  
Activate the brake.  
Releasing the Brake  
Pull the brake lever up toward the left-hand handle until  
it clicks into place.  
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.  
witch  
6. Sawing  
WARNING  
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.  
• 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  
Always follow the safety regu-  
lations. The chain saw must  
only be used for cutting wood.  
It is forbidden to cut other  
types of material. Vibrations  
and kickback vary with differ-  
ent materials and the require-  
ments of the safety regulations  
would not be respected. Do  
not use the chain saw as a le-  
ver for lifting, moving or split-  
ting 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.  
GB-11  
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G2000T  
A log lying on the ground  
This saw is equipped with a chain  
brake that will stop the chain. You  
must check the chain brake opera-  
tion before each usage by running  
the saw at full the throttle for I -2 sec-  
onds and pushing the front hand  
guard forward. The chain should stop  
immediately with the engine 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 opera-  
tion 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, inad-  
equate maintenance, or incorrect re-  
placement of the bar or chain may  
increase the risk ot serious personal  
injury.  
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 bot-  
tom.  
FELLING A TREE  
Cutting the limbs of Fallen Tree  
Felling direction  
ling cut  
Notch cut  
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.  
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.  
WARNING  
Be alert to the springing back of a cut limb.  
3. Make a notch cut one-third of the way into the tree  
on the felling side.  
Pruning of Standing Tree  
4. Make a felling cut from the opposite side of the notch  
and at a level slightly higher than the bottom of the  
notch.  
WARNING  
When you fell a tree, be sure to warn neighboring work-  
ers of the danger.  
Bucking and Limbing  
Cut up from the bottom, finish down from the top.  
WARNING  
WARNING  
• 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.  
• 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.  
• 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-12  
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G2000T  
7. Maintenance  
3. Oil filter  
WARNING  
1. With a wire hook, take out the oil filter from the feed-  
ing port.  
Before cleaning, the inspecting or repairing the unit,  
make sure that engine has stopped and is cool. Dis-  
connect the spark plug to prevent accidental starting.  
G
B
MAINTENANCE AFTER EACH USE  
1. Air filter  
Oil filter  
2. Wash the filter with gasoline.  
Lift the cleaner cover with push the corner of cleaner  
cover to release the Hook. Then clean up the filter ele-  
ments with air blaw or take off the filter elements and  
tap off attached sawdust. When they are extremely dirty,  
shakewash with gasoline. Dry them completely before  
WARNING  
When returning the filter, use a pinch  
and make sure that the pipe is not  
folded and the filter is placed at the  
bottom of the tank as shown in the  
picture.  
reinstalling.  
Hook  
Air filter  
4. Spark plug  
NGK  
CMR7A  
2. Oiling port  
Dismount the guide bar and check the oiling port for  
clogging.  
Spark plug tightening  
torgue 7.8~10.8N.m.  
Clean the electrodes with a wire brush and reset the  
gap to 0.6 mm as necessary.  
Oiling port  
3. Guide bar  
When the guide bar is dismounted, remove sawdust in  
the bar groove and the oiling port.  
<Type : sprocket nose>  
5. Sprocket  
Grease the nose sprocket from the feeding port on the  
tip of the bar.  
ort  
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.  
4. Others  
Check for fuel leakage and loose fastenings and dam-  
age 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.  
6. Way of the cooling air  
WARNING  
• The engine metal parts can burn your skin. Never  
touch the cylinder, muffler or ignition plug etc. during  
operation or right after stopping the engine.  
• Before starting the engine, check around the muffler  
and take off sawdust. If you do not, it will cause the  
overheating and a fire. For preventing the trouble,  
please keep clean around the muffler.  
PERIODICAL SERVICE POINTS  
1. Cylinder fins  
1. Remove the starter case.  
2. Remove sawdust between the  
cylinder fins.  
3. Clean the valute area.  
2. Fuel filter  
This engine is air-cooled. Dust clogging between the  
inlet port of the cooling air and cylinder fins will cause  
overheating of the engine. Periodically check and clean  
the cylinder fins after removing the air cleaner and the  
cylinder cover.  
(a) Using a wire hook, take out the filter from the filler  
port.  
Fuel filter  
inlet port of the cooling air  
(b) Wash the filter with gasoline.  
Replace with new one if clogged with dirt completely.  
IMPORTANT  
When installing the cylinder cover, make sure that  
switch wires and grommets are positioned correctly  
in place.  
WARNING  
When returning the filter, use a pinch not to be folded  
the suction pipe.  
GB-13  
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G2000T  
8. Maintenance of Saw Chain and Guide Bar  
SAW CHAIN  
WARNING  
WARNING  
Be sure to round off the front edge to reduce the  
chance of kickback or tie-strap breakage.  
It is very important for smooth and safe operation to  
always keep the cutters sharp.  
Make sure every cutter has the same length and edge  
angles as illustrated.  
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.  
Cutter length  
• Fuel consumption increases.  
Cutter setting standards:  
ng angle  
WARNING  
Be sure to wear safety gloves.  
e plate angle  
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.  
te cutting angle  
Chain type:  
File size:  
25AP  
5/32 in (4.0 mm)  
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-  
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.  
Place the file on the cutter and push straight forward.  
Keep the file position as illustrated.  
Ruler  
Gap  
No gap  
Chain tilts  
After each cutter has been filed, check the depth gauge  
and file it to the proper level as illustrated.  
WARNING:  
This saw is equipped with one of the following low kick-  
back bar/chain combinations:  
Zenoah Part Number  
Saw Model  
G2000T  
Bar Size  
8
Guide Bar  
2983-52111  
Saw Chain  
2981-52210  
Appropriate gauge checker  
ulder round  
.025 (0.64 mm)  
Depth gauge stan
GB-14  
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G2000T  
9. Troubleshooting Guide  
Case 1. Starting failure  
Case 3. Oil does not come out  
Check oil for sub-  
standard quality.  
WARNING  
Replace.  
a
a
Make sure the icing prevention system is not working.  
d
G
B
Check fuel for water  
Replace with proper  
Check oil passage  
and ports for clog-  
ging.  
or substandard mix-  
a
fuel.  
Clean.  
ture.  
d
Remove and dry the  
spark plug.  
Check for engine  
flooding.  
a
a
Then pull the starter  
again with no choke.  
If the unit seems to need further service, please consult  
with an authorized service shop in your area.  
d
Replace with a new  
plug.  
Check spark ignition.  
Case 2. Lack of power/Poor acceleration/  
Rough idling  
Check fuel for water  
or substandard mix-  
ture.  
Replace with proper  
a
a
fuel.  
d
Check air filter and  
fuel filter for clog-  
ging.  
Clean.  
d
Check carburetor  
for inadequate ad-  
justment.  
Readjust speed  
needles.  
a
10. Disposal  
When disposing your machine, fuel or oil for the machine,  
be sure to allow your local regulations.  
11. Specifications  
Power unit:  
Displacement (cm3): ............................................. 18.3  
Fuel: ................ Mixture (Gasoline 50 : Two-cycle oil 1)  
(when using ZENOAH genuine oil)  
Cutting head:  
Sprocket (Teeth x Pitch): ..................................8T x 1/4  
Guide bar  
Type: ................................................ Sprocket nose  
Size (in. (mm)): ............................................. 8 (200)  
Saw chain  
Fuel tank capacity (cm3): ....................................... 170  
Chain oil: ................................. Motor oil SAE# 10W-30  
Oil tank capacity (cm3):.......................................... 160  
Carburetor: ........................... Diaphragm type (Walbro)  
lgnition system: .....................................Pointless (CDl)  
Spark plug:.............................................. NGK CMR7A  
Oil feeding system: ...... Automatic pump with adjuster  
Power .......................................... 0.64/9,000 (kw/min-1)  
Max speed ............................................. 12,500 (min-1)  
Idle speed ................................................ 2,900 (min-1)  
Dimensions (L x W x H) (mm): ............ 270 x 190 x 190  
Dry weight  
Type: ..................................................Oregon 25AP  
Pitch (in. (mm)):........................................ 1/4 (6.35)  
Gauge (in. (mm)):................................... 0.05 (1.27)  
Specifications are subject to change wihout notice.  
Power unit only (kg): ............................................... 2.2  
GB-15  
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G2000T  
Limited warranty  
Should any failure occur on the product under normal  
operating conditions within the applicable warranty pe-  
riod, the failed part will be replaced or repaired free of  
charge by a ZENOAH authorized dealer.  
SHALL NOT REDUCE THE WARRANTY OBLIGATION  
OF THE COMPANY.  
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER  
ENGINE COMPONENTS CAUSED BY THE FAIRURE OF  
A WARRANTED PARTS STILL UNDER WARRANTY.  
WARRANTY PERIOD: 1 year (6 months if used profes-  
sionally, and 30 days if used for rental purpose) from  
the date of initial purchase.  
THE WARRANTY DOES NOT APPLY TO THOSE  
UNITS WHICH HAVE BEEN DAMAGED BY NEGLI-  
GENCE OF INSTRUCTION LISTED IN THE OWNER/  
OPERATOR MANUAL FOR PROPER USE AND MAIN-  
TENANCE OF THE UNITS ACCIDENT MISHANDLING,  
ALTERATION, ABUSE, IMPROPER LUBRICATION, USE  
OF ANY PARTS OR ACCESSARIES OTHER THAN  
THOSE SPECIFIED BY THE COMPANY, OR OTHER  
CAUSES BEYOND THE COMPANY'S CONTROL.  
THE PURCHASER SHALL BEAR COSTS OF TRANS-  
PORTING THE UNIT TO AND FROM THE ZENOAH  
DEALER.  
THE PURCHASER SHALL NOT BE CHARGED FOR DI-  
AGNOSTIC LABOR WHICH LEADS TO THE DETERMI-  
NATION THAT A WARRANTED PART IS DEFECTIVE, IF  
THE DIAGNOSTIC WORK IS PERFORMED AT THE  
ZENOAH DEALER.  
THIS WARRANTY DOES NOT COVER THOSE PARTS  
REPLACED BY NORMAL WEAR OR HARMLESS  
CHANGES IN THEIR APPEARANCE.  
THE PURCHASER OR OWNER IS RESPONSIBLE FOR  
THE PERFORMANCE OF THE REQUIRED MAINTE-  
NANCE AS DEFINED BY THE MANUFACTURER IN THE  
OWNER/OPERATOR MANUAL.  
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.  
ANY WARRANTED PART WHICH IS NOT SCHEDULED  
FOR REPLACEMENT AS REQUIRED MAINTENANCE,  
OR WHICH IS SCHEDULED ONLY FOR REGULAR IN-  
SPECTION TO THE EFFECT OF REPAIR OR “REPLACE  
AS NECESSARY” SHALL BE WARRANTED FOR THE  
WARRANTY PERIOD. ANY WARRANTED PART WHICH  
IS SCHEDULED FOR REPLACEMENT AS REQUIRED  
MAINTENANCE SHALL BE WARRANTED FOR THE  
PERIOD OF TIME UP TO THE FIRST SCHEDULED  
REPLACEMENT POINT FOR THE PART.  
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL  
DAMAGE UNDER ANY AND ALL WARRANTIES ARE  
EXCLUDED.  
IF YOU NEED TO OBTAIN MORE INFORMATION,  
PLEASE CALL YOUR NEAREST SERVICE CENTER, OR  
CHECK PLEASE ZENOAH WEB SITE http://  
ANY REPLACEMENT PART THAT IS EQUIVALENT IN  
PERFORMANCE AND DURABILITY MAY BE USED IN  
NON-WARRANTY MAINTENANCE OR REPAIRS, AND  
PRINTED ON RECYCLED PAPER  
GB-16  
PRINTED IN JAPAN  
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