Page 16 of 402

Cooling system ...................................8-23
Spark plug inspection .........................8-39
Air filter element cleaning ...................8-43
Carburetor settings .............................8-51
Idle speed adjustment ........................8-67
Throttle lever adjustment ....................8-71
Front and rear brake pad
inspection .........................................8-73
Brake fluid level check ........................8-75
Brake fluid replacement ......................8-79
Front brake lever free play .................8-81
Brake pedal height adjustment ...........8-83
Parking brake adjustment ...................8-85
Adjusting the rear brake light switch ...8-89
Clutch adjustment ...............................8-91
Drive chain slack check ......................8-91
Drive chain slack adjustment ..............8-93
Lubricating the drive chain .................8-95
Cable inspection and lubrication ........8-99Brake and shift pedal/brake and
clutch lever lubrication ....................8-101
Lubricating the front upper and
lower arm pivots .............................8-101
Rear arm pivot lubrication ................8-103
Wheel removal .................................8-105
Wheel installation .............................8-105
Replacing the headlight bulb ............8-107
Headlight beam adjustment ..............8-111
Tail/brake light bulb replacement .....8-113
Troubleshooting ................................8-115
Troubleshooting chart .......................8-119
CLEANING AND STORAGE ...................9-1
A. Cleaning ...........................................9-1
B. Storage ............................................9-7
SPECIFICATIONS .................................10-1
10
9
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6-23
0-10 hours:
Avoid continuous operation above half throttle.
Allow a cooling off period of five to ten minutes
after every hour of operation. Vary the speed of
the machine from time to time. Do not operate it
at one set throttle position.
10-20 hours:
Avoid prolonged operation above 3/4 throttle.
Rev the machine freely through the gears but do
not use full throttle at any time.
After break-in:
Avoid prolonged full throttle operation. Vary
speeds occasionally.
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8-7INITIAL EVERY
month 1 3 6 6 12
ITEM ROUTINEWhichever
km 320 1200 2400 2400 4800 comes first
(mi) (200) (750) (1500) (1500) (3000)
hours 20 75 150 150 300
Transmission9Replace oil.2222
9Check coolant leakage.
Cooling system9Repair if necessary.22222
9Replace coolant every 24 months.
9Check condition.
Spark plug9Adjust gap and clean.22222
9Replace if necessary.
Air filter element9Clean. Every 20–40 hours.
9Replace if necessary. (More often in wet or dusty areas)
* Carburetor9Check idle speed / starter operation.
2222
9Adjust if necessary.
* Crankcase breather9Check breather hose for cracks or damage.
222
system9Replace if necessary.
9Check for leakage.
* Exhaust system9Retighten if necessary.222
9Replace gasket(s) if necessary.
* Fuel line9Check fuel hose for cracks or damage.
222
9Replace if necessary.
Throttle operation9Inspect and adjust free play if necessary.22222
EBU02621
PERIODIC MAINTENANCE/LUBRICATION
NOTE:8For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
8For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. However, keep in mind
that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed.
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q
w
1. Maximum level mark
2. Minimum level mark
1. Repère maximum
2. Repère minimum
1. Marca de máximo
2. Marca de mínimo
8-23
7. Start the engine and warm up for a few
minutes. While warming up, check for oil
leakage. If oil leakage is found, stop the
engine immediately, and check for the
cause.
8. Turn the engine off, and then check the oil
level and correct it if necessary.
EBU01080
Cooling system
1. Check the coolant level in the coolant
reservoir when the engine is cold as the
coolant level will vary with engine temper-
ature. The coolant level should be
between the maximum and minimum
marks.
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8-33
6. Disconnect the hose on the coolant reser-
voir side and drain the coolant from the
coolant reservoir.
7. After draining the coolant, thoroughly flush
the cooling system with clean tap water.
8. Replace the coolant drain bolt washers if
they are damaged, and then tighten the
coolant drain bolts to the specified torque.
9. Install the coolant reservoir hose.
10. Pour the recommended coolant into the
radiator until it is full.
q
w
1. Coolant reservoir hose
2. Coolant reservoir
1. Flexible du vase d’expansion
2. Vase d’expansion
1. Manguera del depósito de refrigerante
2. Depósito de refrigerante
Tightening torque
Coolant drain bolt:
14 Nm (1.4 m0kgf)
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8-37
12. Run the engine several minutes. Stop the
engine, and then check the coolant level in
the radiator. If it is low, add more coolant
until it reaches the top of the radiator.
13. Fill the coolant reservoir with coolant up to
the maximum level.
14. Install the coolant reservoir cap and check
for coolant leakage.
NOTE:
If any leakage is found, ask a Yamaha dealer to
inspect the cooling system.
15. Install the radiator cover by installing the
bolts.
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8-120
Engine overheating
Wait until the
engine has cooled.Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.
Level is low, check the
cooling system for leakage.
No
leakage.
Leakage.Ask a Yamaha dealer
to inspect and repair
the cooling system.
Add coolant.
(See NOTE.)
Restart the engine. If the engine overheats
again, ask a Yamaha dealer to inspect and
repair the cooling system.
NOTE:
If it is difficult to get recommended coolant, tap water can be temporarily used, provided that it is
changed to the recommended coolant as soon as possible.
w
Wait for the engine and radiator to cool before removing the radiator cap. You could be burned
by hot fluid and steam blown out under pressure. Always put a thick rag over the cap when
opening. Allow any remaining pressure to escape before completely removing the cap.
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