RedMax Chainsaw G621AVS User Guide

3369-93110 (506)  
OWNER/OPERATOR MANUAL  
CHAINSAWS  
G621AVS  
WARNING  
WARNING  
The engine exhaust from this product  
contains chemicals known to the State  
of California to cause cancer, birth  
defects or other reproductive harm.  
Before using our products, please  
read this manual carefully to  
understand the proper use of your  
unit.  
APPLICABLE SERIAL NUMBERS :  
330138 and up  
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1. Parts location  
1. Front guard  
2. Starter knob  
3. Air cleaner  
4. Choke knob  
5. Throttle interlock  
6. Right handle  
7. Throttle lever  
8. Latch  
9. Engine switch  
10. Fuel tank  
11. Oil tank  
12. Left handle  
13. Saw chain  
14. Guide Bar  
2. Specifications  
G621AVS  
Power unit :  
3
Displacement ···················································································· 3.78(62.0) cu-in(cm )  
Fuel ············································································· Mixture(Gasoline 50 : 2-cycle oil 1)  
Fuel tank capacity ················································································· 22.4(0.67) fl.oz( )  
Chain oil ························································································ Motor oil SAE #10W-30  
Oil tank capacity ···················································································· 11.8(0.35) fl.oz( )  
Carburetor ········································································· Diaphragm type (Walbro HDA)  
lgnition system ··································································································· Solid-state  
Spark plug ······························································································· Champion CJ-7Y  
Oil feeding system ··········································································· Variable delivery type  
Sprocket : Pitch – No. of teeth ··························································· 3/8in(9.53mm) – 7T  
Dimensions : L – W – H ········································ 17.3(433)x10.2(255)x11.4(285) in(mm)  
Dry weight ································································································ 11.9(5.3) lbs(kg)  
Cutting attachment :  
Guide bar : Type – Size ······················································· 18(45), 20(50), 24(60) in(cm)  
Saw chain : Type – Pitch – Gauge ······················· Oregon 72V – 3/8(9.53) – 0.050(1.27) in(mm)  
Specifications are subject to change without notice.  
3   
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3. Symbols on the machine  
WARNING  
For safe operation and maintenance, symbols are carved in  
relief on the machine.  
According to these indications, please be careful not to take a  
mistake.  
(a). The port to refuel the "MIX GASOLINE"  
Position: Fuel cap  
(b). The port to refuel the chain oil  
Position: Oil cap  
(c). Put the switch to the "O" position, immediately the engine stops.  
Position: Rear-left of the unit  
(d). Starting the engine, if you pull out the choke knob (at the back-  
right of the rear handle) to the point of the arrow, you can set the  
starting mode as follows  
• First-stage position – starting mode when the engine is warm.  
• Second-stage position – starting mode when the engine is cool.  
Position: Upper-right of the aircleaner cover  
(e). 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  
(f). It shows the directions that the chain brake is released (for the  
white arrow) and activated (for the black arrow).  
Position: Front of the chain cover  
INFORMATION IMPORTANTE CONCERNANT LE MOTEUR  
Ce moteur conformc aux normcs U.S. EPA  
PH1 pour les petits moteurs tout-terrain.  
Type de moteur : 5KZXS. 0625MN:EM  
Cylindrée du moteur : 62cc  
IMPORTANT ENGINE INFORMATION  
THIS ENGINE CONFORMS TO US EPA  
PH1 FOR SMALL OFF-ROAD ENGINES.  
ENGINE FAMILY : 5KZXS. 0625MN:EM  
ENGINE DISPLACEMENT : 62cc  
REFER TO OWNER'S MANUMAL FOR MAINTE-  
NANCE SPECIFICATIONS AND ADJUSTMENTS.  
MANUFACTURED :  
Se référer au Manuel de l'utilisateur pour les  
spécifications d'entretien et les réglages.  
Manufacturé :  
RedMax  
RedMax  
Made in Japan  
Made in Japan  
4   
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4. 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.  
8. Before you start the engine, make sure  
the saw chain is not contacting anything.  
9. 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.  
2. Use safety footwear, snug fitting clothing  
and eye, hearing and head protection  
devices.  
10. Always inspect the chain saw before  
each use for worn, Ioose, or changed  
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.  
3. Always use caution when handling fuel.  
Wipe up all spills and then move the  
chain saw at least ten(10) feet(three(3)  
m) from the fueling point before starting  
the engine.  
3a) Eliminate all sources of sparks or  
flame (ie. smoking, open flames, or  
work that can cause sparks) in the  
areas where fuel is mixed, poured, or  
stored.  
11. All chain saw service, other than the  
items listed in the Operator’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 flywheel to disintegrate).  
3b) Do not smoke while handling fuel or  
while operating the chain saw.  
4. Do not allow other persons to be near  
the chain saw when starting the engine  
or cutting a wood. Keep bystanders and  
animals out of the work area. Children,  
pets, and bystanders should be a  
minimum of thirty(30) feet away when  
you start or operate the chain saw.  
12. Always shut off the engine before setting  
it down.  
13. 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.  
5. Never start cutting until you have a clear  
work area, secure footing, and planned  
retreat path from the falling tree.  
6. 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.  
14. When cutting a limb that is under  
tension, be alert for spring back so that  
you will not be struck when the tension in  
the wood fibers is released.  
7. Keep all parts of your body away from  
the saw chain when the engine is  
running.  
15. Keep the handles dry, clean and free of  
oil or fuel mixture.  
5   
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4. For safe operation  
16. 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.  
19. When transporting your chain saw, make  
sure the appropriate guide bar scabbard  
is in place.  
20. This chain saw is equipped with a spark  
arrester built-in muffler. Periodically  
check the arrester to keep it in good  
order.  
17. Do not operate a chain saw in a tree  
unless specially trained to do so.  
18. 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.  
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 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 lose  
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. Don’t let go.  
(3) Make certain that the area in which you’re 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.  
(5) Do not overreach or cut above shoulder height.  
(6) Follow manufacturers sharpening and maintenance instructions for saw chain.  
(7) Only use replacement bars and chains specified by the manufacturer or the  
equivalent.  
6   
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5. Installing guide bar and saw chain  
WARNING  
The saw chain has very sharp edges. Use thick  
protective gloves for safety.  
F1  
1. Loosen the nuts and remove the chain cover.  
(F1)  
2. Install the attached spike to the power unit.  
3. Fit the saw chain around the guide bar and,  
while gearing the chain to the sprocket, mount  
the guide bar to the power unit. Then fit the  
chain tensioner nut into the lower hole of the  
guide bar. (F1)  
(1) Chain cover  
(2) Chain tensioner nut  
F2  
NOTE  
Pay attention to the correct direction of the saw  
chain. (F2)  
(1) Moving Direction  
4. Fit the chain cover to the power unit and fasten  
the nuts 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.  
F3  
6. Tighten the nuts 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. (F3)  
(1) Loosen  
(2) Tighten  
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.  
7   
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6. Fuel and Chain oil  
RECOMMENDED MIXING RATIO  
WARNING  
GASOLINE 50:OIL 1  
• 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  
3m (10ft) away from the fueling point  
before starting the engine.  
50:1 MIXING CHART  
GASOLINE gal.  
1
2
3
4
5
2-CYCLE OIL fl.oz 2.6 5.2 7.8 10.4 13  
GASOLINE liter  
1
2
3
4
5
2-CYCLE OIL ml 20  
40  
60  
80 100  
• 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 89 RON  
(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.  
• The RedMax engines are lubricated by oil  
specially formulated for air-cooled 2-cycle  
gasoline engine use. If RedMax 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.  
HOW TO MIX FUEL  
IMPORTANT  
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.  
4. Pour In the rest of gasoline and agitate  
8   
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6. Fuel and Chain oil  
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.  
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.  
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.  
NOTE  
As lot 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.  
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.  
CHAIN OIL  
Use motor oil SAE 10W-30 all year round, or  
SAE 30-40 in summer and SAE 20 in winter.  
WARNING  
1. Select bare ground for fueling.  
2. Move at least 10feet (3meters) away from  
the fueling point before starting the  
engine.  
NOTE  
Do not use waste or regenerated oil that can  
cause damage to the oil pump.  
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  
9   
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7. Operation  
F6  
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.  
STARTING ENGINE  
1. Fill fuel and chain oil tanks respectively, and  
tighten the caps securely. (F6)  
F7  
F8  
F9  
2. Put the switch to "I" position. (F7)  
3. While holding the throttle lever together with the  
throttle interlock, push in the side latch and  
release the throttle lever to hold it at the starting  
position. (F8)  
4. Pull out the choke knob to the closed position.  
(F9)  
(1) Chain oil  
(2) Fuel  
(3) Switch  
(5) Throttle interlock  
(7) Choke knob  
(4) Throttle lever  
(6) Latch  
NOTE  
When restarting immediately after stopping the  
engine, leave the choke knob at the open position.  
5. While holding the saw unit securely on the  
ground, pull the starter rope vigorously. (F10)  
WARNING  
Do not start the engine while hanging the chain  
saw with a hand. The saw chain may touch  
your body. It's very dangerous.  
6. When engine has ignited first, push in the choke  
knob and pull the starter again to start the  
engine.  
F10  
7. Allow the engine to warm up with the throttle  
lever pulled slightly.  
WARNING  
Keep clear of the saw chain as it will start  
rotatIng upon starting of engine.  
10   
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7. Operation  
CHECKING OIL SUPPLY  
WARNING  
F11  
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. (F11)  
(1) Chain oil  
F12  
The oil flow can be changed by turning the adjuster  
knob on the top of the cylinder cover. Adjustment  
according to your work conditions. (F12)  
(1) Adjuster knob  
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.  
ADJUSTING CARBURETOR (F13)  
The carburetor on your unit has been factory  
adjusted, but may require fine tuning due to  
change in operating conditions.  
Before adjusting the carburetor, make sure that  
provided are clean air/fuel filters and fresh,  
properly mixed fuel.  
When adjusting, take the following steps:  
NOTE  
F13  
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 engine and allow it to warm up in low  
speed for a few minutes.  
3. Turn idle adjusting screw (T) counter-clockwise  
11   
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7. Operation  
so that saw chain does not turn. If idling speed is  
too slow, turn the screw clockwise.  
4. Make a test cut adjust the H needle for best  
cutting power, not for maximum speed.  
(1) L needle  
(2) H needle  
(3) Idle adjusting screw  
ICING PREVENTION SYSTEM  
This system prevents icing of the carburetor which  
sometimes happen while sawing in winter.  
When your saw is possible to be frozen at the  
carburetor during operation, use the system as  
follows:  
F14  
1. Remove the air cleaner cover, air filter, and  
silencer. (F14)  
(1) Cylinder cover  
(2) Air cleaner cover  
(3) Intake silencer  
(4) Air filter  
F15  
2. Pull off the plug on the rear wall of the cylinder  
cover and reinstall it upside down. (F15)  
(1) Plug  
3. Install the covers as they are.  
IMPORTANT  
Never use the system in normal temperature  
because that can cause starting failure due to  
overheating of the carburetor.  
ANTI-FREEZE PARTS  
F16  
For use under extra cold condition. Optional parts  
as shown right are available. When normal air filter  
is frozen even with the plug opened, contact your  
nearest dealer for the anti-freeze parts. (F16)  
(1) Air inlet plug (P/N 2610-83220)  
(2) Cylinder cover for cold use (P/N 2626-31110)  
12   
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7. Operation  
CHAIN BRAKE  
F17  
This machine is equipped with an automatic brake  
to stop saw chain rotation upon occurrence of  
kickback while in saw cutting operation. 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 brake, pull up the front guard toward the  
front handle till "click" sound is heard. (F17)  
(1) Front handle  
(2) Released  
(3) Braking  
(4) Brake lever  
F18  
IMPORTANT  
Be sure to confirm brake operation on the 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. (F18)  
In case the brake is not effective, ask our dealer  
inspection and repairing.  
The engine, If being kept rotated at high speed with  
the brake engaged, heats the clutch, causing a  
trouble.  
F19  
When the brake is operated while in operation,  
immediately release your fingers from the throttle  
lever and stop the engine.  
STOPPING ENGINE  
1. Release the throttle lever to allow the engine  
idling for a few minutes  
2. Put the switch to the "O" (STOP) position. (F19)  
(1) Switch  
13   
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8. Sawing  
WARNING  
• Before proceeding to your job, read "For  
Safe Operation" section 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  
P.t.o. that are not 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 (F20)  
F20  
• 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 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 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.  
14   
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8. Sawing  
FELLING A TREE (F21)  
1. Decide the felling direction considering the  
wind, lean of the tree, location of heavy  
branches, ease of job after felling and  
other factors.  
F21  
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.  
WARNING  
When you fell a tree, be sure to warn your  
neighboring workers of the danger.  
(1) Notch cut  
(2) Felling cut  
(3) Felling direction  
Bucking and Limbing  
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.  
• 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 bending direction to prevent the guide bar  
from being caught in the cut.  
15   
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8. Sawing  
A Log lying on the ground (F22)  
Saw down halfway, then roll the log over and cut  
from the opposite side.  
F22  
A Log hanging off the ground (F23)  
F23  
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 Limb of Fallen Tree (F24)  
F24  
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.  
WARNING  
Be alert to the springing back of a cut limb.  
Pruning of Standing Tree (F25)  
Cut up from the bottom, finish down from the top.  
F25  
WARNING  
• Do not use an unstable foothold or ladder.  
• Do not overreach.  
• Do not cut above shoulder height.  
• Always use your both hands to grip the saw.  
16   
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9. Maintenance  
Maintenance, replacement, or repair of the  
emission control device and systems may be  
performed by any non-road engine repair  
establishment or individual.  
F26  
WARNING  
Before cleaning, inspecting or repairing your  
unit, make sure that engine has stopped and is  
cool. Disconnect the spark plug to prevent  
accidental starting.  
MAINTENANCE AFTER EACH USE  
1. Air filter  
Loosen the knob and remove the air cleaner cover.  
Take off the filter element and brush off attached  
sawdust. When the filter is clogged with dust,  
separate it in halves and shake-wash with  
gasoline. Dry them completely before reinstalling.  
(F26)  
(1) Air filter  
F27  
NOTE  
When servicing the air filter, be sure to block the air  
intake hole with cloth. (F26)  
2. Oiling port  
Dismount the guide bar and check the oiling port  
for clogging. (F27)  
F28  
(1) Oiling port  
3. Guide bar  
When the guide bar is dismounted, remove  
sawdust in the bar groove and the oiling port. (F29)  
Grease the nose sprocket from the feeding port on  
the tip of the bar. (F28)  
(1) Groove  
(3) Grease port  
(2) Oiling port  
(4) Sprocket  
4. 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  
again.  
17   
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9. Maintenance  
PERIODICAL SERVICE POINTS  
F29  
1. 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. (F29)  
NOTE  
Be sure to block the air intake hole.  
F30  
2. Fuel filter  
(a) Using a wire hook, take out the filter from the  
filler port. (F30)  
(b) Disassemble the filter and wash with gasoline,  
or replace with new one if needed. (F31)  
(1) Screen  
(2) Clip  
(3) Filter  
(4) Sleeve  
(5) Retainer  
F31  
NOTE  
• After removing the filter, use a pinch to hold the  
end of the suction pipe.  
• When assembling the filter, take care not to  
allow filter fibers or dust inside the suction pipe.  
3. Oil tank  
With a wire hook, take out the oil filter through the  
filler port and clean in gasoline. When putting the  
filter back into the tank, make sure that it comes to  
the front right corner without bent. Also clean off  
dirt in the tank.  
18   
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9. Maintenance  
4. Spark plug (F32)  
F32  
Clean the electrodes with a wire brush and reset  
the gap to 0.65 mm as necessary.  
Champion: CJ-7Y  
or  
NGK: BPM7A  
5. Sprocket (F33)  
F33  
Check for cracks and for excesslve wear interfenng  
with the chain drive. If the wearing is found  
obviously, replace it with new one. Never fit a new  
chain on a worn sprocket, or a worn chain on a  
new sprocket.  
6. Spark arrester  
Remove the front Cover of the muffler and inspect  
the spark arresting screen. Brush off Carbon  
deposits as necessary. Replace if damaged.  
NOTE  
• When servicing the spark arrester, refer to the  
Service Parts List supplied with the unit for its  
location and correct assembly order of parts.  
• Be sure to use a correct tool for the muffler nuts.  
The nuts are tightened firmly, and the use of  
inadequate tool will damage them.  
7. Front and Rear dampers  
Replace if adhered part is peeled or crack is  
observed on the rubber part.  
Replace if the inside of the rear damper metal has  
been beaten by the stopper bolt and the clearance  
of the metal increased.  
19   
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10. Maintenance of Saw Chain and Guide Bar  
SAW CHAIN  
F34  
WARNING  
It is very important for smooth and safe  
operation to keep the cutters always sharp.  
Your cutters need to be sharpened when:  
• Sawdust becomes powder-like.  
• You need extra force to saw in.  
• The cut way does not go straight.  
• Vibration increases.  
• Fuel consumption increases.  
Cutter setting standards:  
WARNING  
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 your chain.  
Chain type:  
File size:  
72V  
7/32 in (5.5mm)  
Place your file on the cutter and push straight  
forward. Keep the file position as illustrated. (F34)  
F35  
Make sure every cutter has the same length and  
edge angles as illustrated. (F35)  
(1) Cutter length  
(2) Filing angle  
(3) Side plate angle  
(4) Top plate cutting angle  
20   
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10. Maintenance of Saw Chain and Guide Bar  
GUIDE BAR  
F36  
• Reverse the bar occasionally to prevent partial  
wear.  
• The bar rail should always be a square. Check  
for wear of the bar rail. Apply a ruler to the bar  
and the outside 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. (F36)  
(1) Ruler  
(2) Gap  
(3) No gap  
(4) Chain tilts  
WARNING  
This saw is equipped with one of the following  
low kickback bar/chain combinations:  
RedMax Part Number  
Bar Size  
18” (45cm)  
20” (50cm)  
24” (60cm)  
Guide Bar  
Saw Chain  
72V66X  
72V70X  
72V81X  
180RNDD176  
200RNDD176  
240RNDD176  
For replacement use only above bars and chains  
or the following:  
OREGON BAR  
18, 20, or 24 inch POWER MATCH®  
(pitch: 3/8”) Mount code #D176.  
GB BAR  
18, 20, or 24 inch PRO SPROCKET NOSE  
(pitch: 3/8”) Mount code #D176.  
PRO TOP BAR (pitch: 3/8”) Mount code E &  
EX  
OREGON CHAIN  
72V  
11. Storage  
1. Empty the fuel tank and run the engine out of  
fuel.  
2. Empty the oil tank.  
3. Clean the entire unit.  
4. Store the unit in a dry place out of the reach of  
children.  
21   
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12. Troubleshooting Guide  
Case 1. Starting failure:  
Make sure the icing prevention system is not working.  
Check fuel for water or  
substandard mixture.  
Replace with proper fuel.  
Remove and dry the spark plug.  
Then pull the starter again with no choke.  
Check for engine flooding.  
Check the spark.  
Replace with a new plug.  
Case 2. Lack of power/Poor acceleration/Rough idling  
Check fuel for water or  
substandard mixture.  
Replace with proper fuel.  
Check air filter and fuel  
filter for clogging.  
Clean.  
Check carburetor for  
inadequate adjustment.  
Readjust speed needles.  
Case 3. Oil does not come out  
Check oil for  
substandard quality.  
Replace.  
Clean.  
Check oil passage  
and ports for clogging.  
When your unit seems to need further service, please consult with our  
service shop in your area.  
22   
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13. Parts list  
CHAINSAWS  
G621AVS  
NOTE :  
1. Use KOMATSU ZENOAH genuine parts as specified in the parts list for repair and/or  
replacement.  
2. KOMATSU ZENOAH does not warrant the machines, which have been damaged by the  
use of any parts other than those specified by the company.  
3. When placing parts orders for repair and/or replacement, check if the model name and the  
serial number are applicable to those specified in the parts list, then use parts number  
described in the parts list.  
4. The contents described in the parts list may change due to improvement.  
5. The parts for the machine shall be supplied seven (7) years after the machine is  
discontinued. [It is possible that some specific parts may be subject to change of their  
delivery term and list price within the limit of seven (7) years after the machine is  
discontinued. It is also possible that some parts may be available even after the limit of  
seven (7) years.]  
June 2005  
APPLICABLE SERIAL NUMBERS :  
330138 and up  
23   
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13. Parts list  
G621AVS  
Fig.A-1 POWER UNIT (1)  
24   
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Fig.A-1 POWER UNIT (1)  
G621AVS  
Q'TY  
/UNIT  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
2618-41112 Piston  
1
2
3
3356-12141 Grommet  
848-C90-14B3 Gasket  
1
1
1
1
1
4
1
1
1
2
2
1
1
2
1
2
1
6
1
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
2
2
2
2
2618-41210 Ring  
3366-41310 Pin  
3350-41320 Ring  
2
1
4
2618-14120 Insulator  
848-C90-14C2 Gasket  
2616-14211 Gasket  
3310-12281 Bolt  
2
5
1400-41410 Bearing  
2616-41510 Washer  
2616-42007 Crankshaft comp.  
1300-42410 Shim  
1
6
2
7
1
8
848-C90-2104 Crankcase assy  
848-C90-2112 • Crankcase comp.  
04065-03515 • Snap ring  
T4012-21240 • Bearing  
2616-21250 • Ring  
0-2 OP  
9
1000-43240 Key  
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
3
1
10  
11  
12  
13  
14  
15  
16  
17  
0290-21025 Washer  
1300-43231 Nut  
2616-51202 Clutch assy  
2616-51210 • Plate  
3350-51231 • Spring  
3320-41410 Bearing  
3350-51320 Washer  
3310-43220 Nut  
3350-21210 • Seal  
T1108-21220 • Seal  
2616-21230 • Stud  
3350-21250 • Pin  
3356-21270 • Pin  
18 848-C90-21D2 • Gasket  
80 848-C90-6703 Oil pump assy  
81 848-C90-6713 • Body  
19  
20  
21  
22  
23  
24  
25  
26  
3310-12281 Bolt  
3356-23100 Oil pipe comp.  
3356-23110 • Pipe  
07000-11008 • O-ring  
3310-57312 • Pipe  
3310-57412 • Weight  
3310-57511 • Clip  
3356-23211 Pipe  
82  
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
96  
97  
98  
3356-55120 • Worm  
3356-55310 Gasket  
0263-90520 Screw  
3356-55450 Grommet  
3356-55511 Shaft  
2618-75004 Starter assy  
2618-75103 • Case comp.  
2616-75120 • • Guide  
3350-75213 • Reel  
27 848-C92-54A1 Guard  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
2670-14320 Screw  
3356-24412 Cover  
0263-60514 Screw  
3350-25111 Screw  
3350-25121 Stopper  
3320-21191 Nut (A)  
01641-20508 Washer  
2616-25211 Catcher  
2616-25230 Screw  
3330-23121 Valve  
3356-75302 • Spring comp.  
3356-75410 • Rope  
3350-75420 • Knob  
3310-75431 • Washer  
3320-75350 • Washer  
1490-32120 • Screw  
2630-82550 • Screw  
3366-75612 Cover  
99 848-C90-75Z1 Screw  
3350-26220 Seal  
100  
2616-75720 Screw  
3350-26230 Clip  
101  
3356-82114 Manifold  
3350-34210 Lever  
3356-34221 Spring  
2616-34230 Pin  
103  
104  
01601-20513 Washer  
01641-20508 Washer  
2
2
3356-34301 Fuel pipe assy  
3356-34310 • Pipe  
3356-34320 • Grommet  
1260-85460 • Clip  
106  
107  
2616-82310 Rod  
2616-82410 Rod  
1
1
1
1
1
1
1
108 848-C91-1510 Muffler assy  
3302-85400 • Filter assy  
3350-34501 Breather assy  
3317-86100 • Breather  
3350-34540 • Pipe  
1260-85460 • Clip  
109  
110  
111  
3359-15112 • Muffler  
3357-15120 • Spark arrester  
0263-20408 • Screw  
112 848-C91-1520 • Cover set  
2616-35112 Front damper  
3356-35121 Cap  
114  
115  
116  
117  
01640-20610 • • Washer  
3356-15210 Gasket  
3356-15220 Bolt  
2
1
2
2
1
1
2
2616-35151 Rear damper (R)  
2616-35132 Rear damper (L)  
2616-35141 Rear damper (B)  
1490-32120 Screw  
2856-35180 Cap  
3356-15230 Nut  
118 848-C90-1260 Cylinder set  
119 848-C90-12A7 • Cylinder  
120 848-815-8500 • Bolt  
0262-10514 Screw  
3320-14140 Washer  
2616-25320 Screw  
2616-35170 Bolt  
25   
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G621AVS  
Fig.A-2 POWER UNIT (2)  
26   
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Fig.A-2 POWER UNIT (2)  
G621AVS  
Q'TY  
/UNIT  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
1
2
3356-24101 Brake band comp.  
3356-24111 • Band  
3356-24120 • Arm  
1
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
2
1
1
2
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
2616-71430 Cord  
2618-71102 Rotor comp.  
1
1
2
2
2
2
1
1
1
2
2
1
1
1
1
1
1
1
1
1
3
3366-71120 • Ratchet  
3350-71131 • Spring  
3388-71150 • Washer  
3310-71142 • Boft  
2850-72110 Cap  
4
04025-00408 • Pin  
5
3356-24140 Roller  
6
2622-24210 Lever  
7
848-C92-5431 Stopper  
2622-24600 Spring  
3356-24240 Spring  
0308-00060 Snap ring  
2623-25310 Spike  
8
1400-72121 Spring  
2850-71320 Tube  
3350-15250 Bolt  
9
10  
11  
12  
13  
14  
0263-30416 Screw  
2616-25320 Screw  
3356-26100 Cap assy  
3317-57220 • Gasket  
71 3699-90002-10 Spark plug  
72 3369-81000 Carburetor  
CJ-7Y  
See Fig.B  
Net type  
73 848-C91-8311 Air cleaner comp.  
74 848-C90-83C0 • Plate  
15 848-C90-3114 Cover comp.  
16  
17  
18  
19  
20  
21  
22  
3356-31120 • Cap  
75  
76  
77  
78  
79  
3369-83200 Silencer  
2622-83302 Cover comp.  
3356-83322 • Knob  
3388-83340 • Gasket  
3369-31163 Label  
3356-31152 • Grommet  
3356-31212 Seal  
0263-90514 Screw  
0263-90520 Screw  
2620-32100 Left handle comp.  
2851-32180 Plate  
81  
82  
3359-53121 Label  
3369-75131 Label  
1
1
23 848-825-1901 Screw  
24  
25  
26  
27  
28  
29  
30  
2622-33005 Right handle assy  
2622-33105 • Right handle comp.  
3350-33220 • Plate  
3330-33250 • Stopper  
3310-33262 • Spring  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
2610-83220 Cap  
1
1
1
1
1
1
1
2
2
1
OP  
OP  
OP  
3310-33271 • Knob  
2623-06012 Double spike kit  
2618-53002 • Chain cover assy  
3356-53220 • • Plate  
0261-00410 • • Screw  
2616-53300 • • Protector  
2618-53510 • Spike  
2810-33280 • Damper (A)  
31 848-C10-33C3 • Lever  
32  
33  
34  
35  
3356-33321 • Spring  
04025-00524 • Pin  
K8  
OP, K8  
OP, K8  
OP, K8  
OP, K8  
OP  
2616-33412 • Damper (B)  
3356-34111 Cover  
3310-53331 • Nut  
36 848-C30-33E3 Arm  
2670-14320 • Screw  
2626-31110 Cover  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
3356-32210 Screw  
3350-34400 Cap assy  
3350-26110 • Cap  
3317-57230 • Chain  
3317-57240 • Stopper  
0277-10410 • Screw  
3350-34450 • Gasket  
3350-51110 Drum  
3360-51120 Sprocket  
3356-53003 Chain cover assy  
3356-53220 • Plate  
0277-10410 • Screw  
3350-53410 Nut  
3/8Px7T  
K8  
2
1
1
3356-53210 Plate  
0261-00410 Screw  
53  
2616-71112 Rotor  
1
1
1
1
1
1
1
54 848-C90-71B1 Source coil  
55  
56  
57  
58  
59  
2616-71301 Ignition coil comp.  
2616-71320 • Cap  
2616-71331 • Cord  
2616-71410 Cord  
2616-71420 Cord  
27   
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G621AVS  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
Fig.B CARBBURETOR  
1
2
3369-81000 Carburetor assy  
3306-81380 Screen  
3350-81130 Cover  
3350-81140 Cover  
3366-81151 Shaft assy  
3366-81340 Valve  
3356-81171 Shaft assy  
2629-81180 Valve  
1488-81190 Stop  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
4
1
2
1
1
1
1
1
1
1
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
3356-81310 Valve  
3350-81220 Ball  
3350-81230 Gasket  
3350-81240 Gasket  
3350-81250 Lever  
2618-81260 Diaphragm  
3350-81270 Diaphragm  
2880-81470 Screw  
3310-81240 Screw  
1491-81130 Screw  
3310-81250 Pin  
K2  
K2  
K3  
K3  
2670-81430 Screw  
3310-81351 Screw assy  
3350-81350 Spring  
3415-81490 Cap limiter  
3350-81370 Spring  
3350-81380 Spring  
3350-81391 Spring  
3369-81410 Needle (H)  
3369-81420 Needle (L)  
1480-81420 Plug  
3356-81430 Plug  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
Fig.C ACCESSORIES  
1
2
3
4
5
3320-91140 Wrench  
2670-91150 Screwdriver  
1
1
1
1
1
3356-97110 Bar protector  
3665-97110 Bar protector  
3369-93110 Owners manual  
OP, 18”  
OP, 20” & 24”  
28   
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G621AVS  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
Fig.D CUTTING HEAD  
1A 180RNDD176 Bar 18”  
1B 200RNDD176 Bar 20”  
1C 240RNDD176 Bar 24”  
1
1
1
1
1
1
2A  
2B  
2C  
72V66X Chain for 18”  
72V70X Chain for 20”  
72V81X Chain for 24”  
3/8P  
3/8P  
3/8P  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
Fig.E SPECIAL TOOLS  
1
2
3
4
5
6
7
2890-96100 Puller assy  
2616-96210 Wrench  
1
1
1
1
1
1
1
OP  
OP  
OP  
OP  
OP  
OP  
OP  
3350-96220 Stopper  
3350-96240 Gauge  
3350-96510 Guide  
3330-97210 Wrench  
3356-96230 Guide  
KIT PARTS  
Q'TY  
/UNIT  
Key# PART NUMBER  
DESCRIPTION  
NOTE  
K2  
K3  
K8  
3350-06020 Gasket kit  
3350-06030 Diaphragm kit  
2623-06012 Double spike kit  
1
1
1
OP  
OP  
OP  
29   
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RedMax  
CHAIN SAWS LIMITED WARRANTY  
EMISSION-RELATED PARTS, FOR TWO (2) YEARS FROM THE DATE OF ORIGINAL DELIVERY, KOMATSU ZENOAH  
AMERICA INC. (THE COMPANY), THROUGH ANY RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE,  
FOR THE ORIGINAL AND EACH SUBSEQUENT PURCHASER, ANY PART OR PARTS FOUND TO BE DEFECTIVE IN  
MATERIAL AND/OR WORKMANSHIP. EMISSION-RELATED PARTS ARE:  
THE CARBURETOR ASSY, COIL ASSY, ROTOR, SPARKPLUG,  
AIR FILTER, FUEL FILTER, INTAKE MANIFOLD, AND THE GASKETS  
ALL OTHER PARTS EXCEPT ABOVE PARTS, FOR TWO (2) YEARS OF HOME USE, 1 YEAR COMMERCIAL USE AND  
NINETY (90) DAYS FOR RENTAL USE FROM THE DATE OF ORIGINAL PURCHASE, THE COMPANY, THROUGH ANY  
RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE, FOR THE ORIGINAL PURCHASER, ANY PART OF  
PARTS FOUND TO BE DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP. THIS IS THE EXCLUSIVE REMEDY.  
THE PURCHASER SHALL BEAR COSTS OF TRANSPORTING THE UNIT TO AND FROM THE RedMax 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 RedMax 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 "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 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 SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE  
COMPANY.  
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAILURE OF A  
WARRANTED PARTS STILL UNDER WARRANTY.  
THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF  
INSTRUCTION LISTED IN THE OWNER/OPERATOR MANUAL FOR PROPER USE AND MAINTENANCE OF THE UNITS,  
ACCIDENTAL MISHANDLING, ALTERATION, ABUSE, IMPROPER LUBULICATION, USE OF ANY PARTS OR ACCESSARIES  
OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE CONPANY'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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  
ARE LIMITED TO TWO (2) YEARS FOR HOME USE, ONE (1) YEAR FOR COMMERCIAL USE AND NINETY (90) DAYS  
FOR RENTAL USE, FROM THE ORIGINAL DELIVERY DATE.  
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL DAMAGE UNDER ANY AND ALL WARRANTIES  
ARE EXCLUDED.  
SOME STATES DO NOT ALLOW LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS OR EXCLUSION OR  
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMINATION OR EXCLUSION MAY  
NOT APPLY TO YOU.  
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY  
FROM STATE TO STATE.  
IF YOU NEED TO OBTAIN INFORMATION ABOUT THE NEAREST SERVICE CENTER, PLEASE CALL KOMATSU  
ZENOAH AMERICA INC. AT (770)-381-5147.  
IMPORTANT: YOU WILL RECEIVE A WARRANTY REGISTRATION CARD AT TIME OF PURCHASE.PLEASE FILL  
OUT THE CARD AND SEND IT TO RedMax / KOMATSU ZENOA AMERICA WITHIN SEVEN (7) DAYS.BE SURE TO KEEP  
A COPY FOR YOUR RECORDS.  
KOMATSU ZENOAH AMERICA INC.  
4344 Shackleford Road Suite 500  
Norcross, Georgia 30093  
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RedMax  
Garantie limitée des tronçonneuses  
Pièces en rapport avec les émissions de gaz d'échappement : KOMATSU ZENOAH AMERICA INC., par  
l'intermédiaire de n'importe quel revendeur RedMax, réparera gratuitement ou remplacera gratuitement pour  
l'acheteur initial et chaque acheteur successif toute(s) pièce(s) se révélant de constitution et/ou de montage  
défectueux pendant deux (2) ans à compter de la date initiale de livraison d’une unité. Les pièces en rapport avec les  
émissions de gaz d'échappement sont:  
l'assemblage carburateur, l'assemblage bobine, le rotor, la bougie,  
le filtre à air, le filtre à carburant, la tubulure d'admission et les joints  
Toutes les pièces autres que celles mentionnées ci-dessus, deux (2) ans d’utilisation domestique, 1 an  
d’utilisation commerciale et quatre-vingt-dix (90) jours pour la location à compter de la date d’achat initial. La société,  
par l’intermédiaire d’un distributeur RedMax, réparera ou remplacera toute(s) pièce(s), sans frais et au bénéfice de  
l’acheteur original, en prenant en charge les frais de pièces et/ou de main d’œuvre. Telles sont les limites de la  
garantie.  
Le coût du transport de l'unité jusqu'au revendeur RedMax et depuis celui-ci sera à la charge de l'acheteur.  
L'acheteur ne supportera pas le coût de main d'oeuvre du diagnostic qui amène à la conclusion qu'une pièce  
garantie est défectueuse, si ce diagnostic est effectué chez le revendeur RedMax.  
L’acheteur ou propriétaire a pour responsabilité d’effectuer l’entretien obligatoire tel que défini par le fabricant dans le  
manuel du propriétaire/de l'utilisateur.  
Toute pièce garantie dont le remplacement n'est pas prévu dans le cadre de l’entretien obligatoire, ou pour laquelle  
est seulement prévue une inspection périodique pour "remplacement ou réparation si nécessaire" sera garantie pour  
la période de garantie. Toute pièce garantie arrivée à l’échéance de son premier remplacement prévu sera garantie  
jusqu’à celui-ci.  
Toute pièce de rechange équivalente en performance ou en durabilité peut être utilisée pour l’entretien hors-garantie  
ou les réparations hors-garantie, et ce sans réduire l’obligation de garantie incombant à la société.  
La société sera tenue responsable des dommages aux autres composants du moteur causés par la défaillance de  
pièce(s) garantie(s) en période de garantie.  
La garantie ne s'applique pas aux unités endommagées par suite de: négligence dans la mise en oeuvre des  
instructions spécifiées dans le manuel du propriétaire/de l'utilisateur en vue d’une utilisation et d’un entretien correct,  
fausse manœuvre accidentelle, modification, utilisation abusive, lubrification incorrecte, utilisation de pièces ou  
d’accessoires autres que ceux spécifiés par la société, ou autres causes hors du contrôle de la société.  
Cette garantie ne couvre pas les pièces remplacées en raison de leur usure normale ou de changements  
d’apparence sans effets.  
Il n'existe aucune autre garantie explicite.  
Les garanties implicites, y compris la valeur marchande et la valeur d’usage pour une utilisation particulière, sont  
limitées à deux (2) ans d’utilisation domestique, un (1) an d’utilisation commerciale et quatre-vingt-dix (90) jours pour  
la location, à compter de la date originale de livraison.  
Les responsabilités pour les dommage conséquents ou incidents sont exclues de toutes les garanties.  
Certaines provinces n'autorisant pas les limitations à la durée des garanties implicites, ou les exclusions ou  
limitations relatives aux dommages incidents ou conséquents, la limitation indiquée ci-dessus peut ne pas vous être  
applicable.  
Cette garantie vous donne des droits juridiques spécifiques, et vous pouvez également jouir d’autres droits variant  
d'une province à l'autre.  
Si vous désirez obtenir des informations sur le centre de service le plus proche, veuillez appeler KOMATSU  
ZENOAH AMERICA INC. au (770)-381-5147  
Note importante: vous recevrez une carte d'enregistrement de garantie au moment de l'achat. Veuillez la remplir et  
l'adresser à RedMax / KOMATSU ZENOAH AMERICA sous sept (7) jours en prenant soin de conserver une copie  
pour vous.  
KOMATSU ZENOAH AMERICA INC.  
4344 Shackleford Road Suite 500  
Norcross, Georgia 30093  
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KOMATSU ZENOAH AMERICA INC.  
4344 Shackleford Road Suite 500  
Norcross, Georgia 30093  
© Printed in Japan  
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