Page 8 of 142

 
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
Handlebar switches  ...................................  4-2
Throttle lever  .............................................  4-2
Throttle OverRide System  .........................  4-3
Speed limiter  .............................................  4-3
Clutch lever  ...............................................  4-4
Brake lever  ................................................  4-5
Brake pedal  ...............................................  4-5
Parking brake  ............................................  4-5
Shift pedal  .................................................  4-7
Kickstarter .................................................  4-7
Fuel tank cap .............................................  4-7
Fuel ...........................................................  4-8Fuel cock  ................................................... 4-9
Starter (choke)  ......................................... 4-10
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 and 2-stroke engine oil mixing 
ratio .......................................................... 5-3
Transmission oil  ......................................... 5-3
Coolant ...................................................... 5-3
Front and rear brakes  ................................ 5-3
Throttle lever  .............................................. 5-4
Drive chain  ................................................. 5-4
Tires ........................................................... 5-5
Measuring the tire pressure  ....................... 5-6
Tire wear limit  ............................................ 5-6
Chassis fasteners  ...................................... 5-7
Instruments, lights and switches  ................ 5-7
OPERATION...................................................6-1
Starting a cold engine  ................................ 6-1
Starting a warm engine  .............................. 6-2 
     
        
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backwards when climbing a hill. To avoid stall-
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 severaltimes 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- 
     
        
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3-1 
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EBU17680 
DESCRIPTION  
EBU17690 
Left view 
EBU17700 
Right view 
1.  Front shock absorber assembly
2. Radiator
3. Fuel cock
4.  Rear shock absorber assembly
5. Spark arrester
6. Starter (choke)
7. Shift pedal
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6
 
1. Tail/brake light
2. Seat
3. Kickstarter
4.  Fuel tank cap
5. Headlight
6. Brake pedal
7.  Brake light switch
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prematurely. 
EBU18530 
Shift pedal  
This ATV is equipped with a constant-mesh 6-
speed transmission. The shift pedal is located on
the left side of the engine and is used in combina-
tion with the clutch when shifting. 
EBU18650 
Kickstarter  
Fold out the kickstarter lever, move it down lightly
with your foot until the gears engage, and thenpush it down smoothly but forcefully. This model is
equipped with a primary kickstarter, allowing the
engine to be started in any gear if the clutch is dis-
engaged. However, shifting the transmission into
the neutral position before starting is recommend-
ed. 
EBU18720 
Fuel tank cap  
Remove the fuel tank cap by turning it counter-
clockwise. 
1. Shift pedal
2. Neutral position
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2
 
1. Kickstarter
1 
     
        
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EBU18772 
Fuel  
Make sure that there is sufficient fuel in the tank.
Fill the fuel tank to the bottom of the filler tube as
shown.
TIP
 
If knocking or pinging occurs, use a different brand 
1.  Fuel tank cap
1
 
1. Fuel level
2. Filler tube 
Recommended fuel:
PREMIUM UNLEADED GASOLINE ONLY
For Europe: PREMIUM UNLEADED GASO-
LINE ONLY with a research octane number 
of 95 or higher.
Fuel tank capacity:
12.0 L (3.17 US gal, 2.64 Imp.gal)
Fuel reserve amount:
2.5 L (0.66 US gal, 0.55 Imp.gal) 
     
        
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of gasoline or higher octane grade.
NOTICE
 
ECB00060  
Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the piston rings, as well 
as to the exhaust system.
WARNING
 
EWB00310  
 
Do not overfill the fuel tank. Fuel expands
when it heats up. If the fuel tank is overfilled,
fuel could spill out due to heat from the en-
gine or the sun. 
 
Be careful not to spill fuel, especially on the
engine or exhaust pipe which can cause a
fire and severe injury. Wipe up any spilled
fuel immediately. 
 
Do not refuel right after the engine has been
running and is still very hot. 
 
Be sure the fuel tank cap is closed securely. 
EBU18830 
Fuel cock  
The fuel cock supplies fuel from the tank to the car-
buretors while also filtering it.The fuel cock lever positions are explained as fol-
lows and shown in the illustrations. 
OFF 
With the fuel cock lever in this position, fuel will not
flow. Always turn the fuel cock lever to this position
when the engine is not running. 
1.  Arrow mark positioned over “OFF”
RES
ONFUEL
OFF
1 
     
        
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EBU19550 
Fuel and 2-stroke engine oil mixing 
ratio  
If Yamalube “R” oil is not available, select an oil
from the following list.
NOTICE
 
ECB00140  
Never mix two types of 2-stroke engine oil in
the same batch. Always use the same type of 
oil to ensure maximum engine performance. 
EBU19580 
Transmission oil  
Make sure that the transmission oil is at the speci-
fied level. Add oil as necessary. (See page 8-10.) 
EBU19630 
Coolant  
Make sure that the coolant is at the specified level.
Add coolant as necessary. (See page 8-12.)
TIP
 
The coolant level must be checked on a cold en-
gine since the level varies with engine tempera- 
ture.
WARNING
 
EWB00510  
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. 
EBU19710 
Front and rear brakes  
Brake lever and brake pedal 
 
Check that there is no free play in the brake le-
ver. If there is free play, have a Yamaha dealer
check the brake system. 
 
Check for correct brake pedal height. (See Recommended 2-stroke engine oil:
Yamalube “R” (Yamalube Racing 2-cycle oil)
Mixing ratio:
24:1 
Recommended 2-stroke engine oil Mixing ratio
 
Castrol R30
20:1 Castrol A545
Castrol A747 
     
        
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6. Remove the fuel tank by removing the bolts.
7. Remove the air filter case cover by unhooking
the holders.8. Remove the mixing chamber cap securing
plate by removing the screw. 
1. Fuel tank
2. Bolt
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1. Air filter case cover
2. Air filter case cover holder
1 2 2