EBU17420
TABLE OF CONTENTS
SAFETY INFORMATION .............................. 1-1
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ............................ 2-1
DESCRIPTION .............................................. 3-1
Left view ..................................................... 3-1
Right view................................................... 3-1
Controls and instruments ........................... 3-2
INSTRUMENT AND CONTROL
FUNCTIONS .................................................. 4-1
Main switch ............................................... 4-1
Indicator light ............................................. 4-2
Handlebar switches ................................... 4-2
Throttle lever ............................................. 4-3
Throttle OverRide System ......................... 4-4
Speed limiter ............................................. 4-4
Clutch lever ............................................... 4-5
Brake lever ................................................ 4-5
Brake pedal ............................................... 4-5
Parking brake ............................................ 4-6
Shift pedal ................................................. 4-7
Kickstarter ................................................. 4-7
Fuel tank cap ............................................. 4-8Fuel ............................................................ 4-8
Fuel cock ................................................... 4-9
Starter (choke) ......................................... 4-11
Seat ......................................................... 4-11
Adjusting the front shock absorber
assemblies .............................................4-12
Adjusting the rear shock absorber
assembly ................................................4-13
PRE-OPERATION CHECKS ..........................5-1
Pre-operation check list ............................. 5-1
Fuel ............................................................ 5-4
2-stroke engine oil ..................................... 5-4
Transmission oil ......................................... 5-4
Front and rear brakes ................................ 5-4
Throttle lever .............................................. 5-5
Drive chain ................................................. 5-5
Tires ........................................................... 5-6
Measuring the tire pressure ....................... 5-7
Tire wear limit ............................................ 5-8
Chassis fasteners ...................................... 5-8
Instruments, lights and switches ................ 5-8
OPERATION...................................................6-1
Starting a cold engine ................................ 6-1
Starting a warm engine .............................. 6-2
1-3
1
2
3
4
5
6
7
8
9
10
11
ing, use the proper gear and maintain a steady
speed when climbing a hill. If you stall or roll
backwards, follow the special procedure for
braking described in this manual. Dismount on
the uphill side or to a side if pointed straight up-
hill. Turn the ATV around and remount, following
the procedure described in this manual.
Always check for obstacles before operating in a
new area.
Never attempt to operate over large obstacles,
such as large rocks or fallen trees. Always follow
proper procedures when operating over obsta-
cles as described in this manual.
Always be careful when skidding or sliding.
Learn to safely control skidding or sliding by
practicing at low speeds and on level, smooth
terrain. On extremely slippery surfaces, such as
ice, go slowly and be very cautious in order to re-
duce the chance of skidding or sliding out of con-
trol.
Never operate an ATV in fast flowing water or in
water deeper than that recommended in this
manual. Remember that wet brakes may have
reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several
times to let friction dry out the linings.
Always use the size and type of tires specified in
this manual.
Always maintain proper tire pressure as de-
scribed in this manual.
Never modify an ATV through improper installa-
tion or use of accessories.
Never exceed the stated load capacity for an
ATV. Cargo should be properly distributed and
securely attached. Reduce speed and follow in-
structions in this manual for carrying cargo or
pulling a trailer. Allow greater distance for brak-
ing.
WARNING
EWB00061
Always turn off the engine when refueling.
Do not refuel right after the engine has been
running and is still very hot.
Do not spill gasoline on the engine or ex-
haust pipe/muffler when refueling. Never re-
fuel while smoking, or in the vicinity of
sparks, open flames, or other sources of ig-
nition such as the pilot lights of water heat-
ers and clothes dryers. Gasoline can catch
fire and you could be burned.
When transporting the ATV in another vehi-
cle, be sure it is kept upright and that the fuel
4-2
1
2
34
5
6
7
8
9
10
11
EBU17781
Indicator light
EBU17881
2-stroke engine oil level warning light “”
This warning light comes on when the oil level in
the 2-stroke engine oil tank is low during operation.
If the warning light comes on during operation,
stop the engine when it is safe to do so, and fill the
oil tank with Yamalube 2 or equivalent 2-stroke en-
gine oil. The warning light should go off after the oil
tank has been refilled.
The electrical circuit of the warning light can be
checked by starting the engine. (See page 6-1.) Ifthe warning light does not come on for a few sec-
onds, then go off, have a Yamaha dealer check the
electrical circuit.CAUTION:
ECB00020
Always make sure there is enough engine oil
before starting the engine.
EBU18061
Handlebar switches
1. Oil level warning light “ ”
1
1. Light switch “LIGHTS”
2. Engine stop switch “ENG. STOP”
1
2
4-3
1
2
34
5
6
7
8
9
10
11
EBU18070
Engine stop switch “ENG. STOP”
Set this switch to “RUN” before starting the engine.
The engine stop switch controls the ignition and
stops the engine when it is running. Use this switch
to stop the engine in an emergency situation. The
engine will not start or run when this switch is set
to “OFF”.
EBU18110
Light switch “LIGHTS”
Set this switch to “LO” to turn on the low beam and
the taillight. Set the switch to “HI” to turn on the
high beam and the taillight. Set the switch to “OFF”
to turn off all the lights.
NOTE:
The headlight and the taillight can be turned on
only when the engine is running.
EBU18280
Throttle lever
Once the engine is running, movement of the throt-
tle lever will increase the engine speed.
Regulate the speed of the ATV by varying the
throttle position. Because the throttle is spring-
loaded, the ATV will decelerate, and the engine will
return to an idle any time the hand is removed fromthe throttle lever.
Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.WARNING
EWB00250
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you need
to. This could cause an accident. Check the op-
eration of the throttle lever before you start the
engine. If the throttle does not work smoothly,
check for the cause. Correct the problem be-
1. Throttle lever
1
5-2
1
2
3
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6
7
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9
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Rear brake
Check operation. If soft or spongy, have Yamaha dealer bleed
hydraulic system.
Check brake pads for wear, and replace if necessary.
Check brake fluid level in reservoir, and add recommended brake
fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary.5-4, 8-23, 8-24, 8-26
Clutch
Check operation, and correct if necessary.
Lubricate cable if necessary.
Check lever free play, and adjust if necessary.8-29
Throttle lever
Make sure that operation is smooth. Lubricate cable and lever hous-
ing if necessary.
Check cable free play, and adjust if necessary.5-5, 8-22
Control cables
Make sure that operation is smooth. Lubricate if necessary. 8-33
Drive chain
Check chain slack, and adjust if necessary.
Check chain condition. Lubricate if necessary.5-5, 8-30, 8-32
Wheels and tires
Check wheel condition, and replace if damaged.
Check tire condition and tread depth. Replace if necessary.
Check air pressure. Correct if necessary.5-6, 5-7, 5-8
Brake and shift pedals
Make sure that operation is smooth. Lubricate pedal pivoting points
if necessary.8-34
Brake and clutch levers
Make sure that operation is smooth. Lubricate lever pivoting points
if necessary.8-34
Chassis fasteners
Make sure that all nuts, bolts and screws are properly tightened. 5-8
Instruments, lights and
switches
Check operation, and correct if necessary. 5-8
ITEM ROUTINE PAGE
5-8
1
2
3
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6
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10
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EBU19830
Tire wear limit
Replace the tire when the tire groove decreases to
3 mm (0.12 in).
EBU19840
Chassis fasteners
Make sure that all nuts, bolts and screws are prop-
erly tightened.
EBU19850
Instruments, lights and switches
Check that all instruments, lights and switches are
working properly. Correct if necessary. Recommended pressure:
Front
30.0 kPa (4.4 psi) (0.300 kgf/cm
2
)
Rear
25.0 kPa (3.6 psi) (0.250 kgf/cm
2
)
Minimum:
Front
27.0 kPa (3.9 psi) (0.270 kgf/cm
2
)
Rear
22.0 kPa (3.2 psi) (0.220 kgf/cm
2
)
Maximum:
Front
33.0 kPa (4.8 psi) (0.330 kgf/cm
2
)
Rear
28.0 kPa (4.1 psi) (0.280 kgf/cm
2
)
1. Tire wear limit
8-6
1
2
3
4
5
6
78
9
10
11
EBU23070
NOTE:
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.
Every two years replace the internal components of the brake master cylinders and calipers, and
change the brake fluid.
Replace the brake hoses every four years and if cracked or damaged.
26 Spark arrester
Clean.
√√√
27
*
Front and rear brake
switches
Check operation and correct if necessary.
√√√√√
28
*
Lights and switches
Check operation and correct if necessary.
Adjust headlight beam.
√√√√√
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300
8-44
1
2
3
4
5
6
78
9
10
11
WARNING
EWB02280
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.