Page 57 of 180
4-25
4
Trailer towing equipment can be obtained at a
Yamaha dealer. (See page 6-7 for precaution in- formation.)
EBU19184Auxiliary DC jackThe auxiliary DC jack is located at the front right
side of the ATV. The auxiliary DC jack can be used
for suitable work lights, radios, etc. The auxiliary
DC jack should only be used when the engine is
running and the light switch is set to “OFF”. 1. Set the light switch to “OFF”.
2. Turn the accessory off.
3. Start the engine. (See page 6-1.) 4. Open the auxiliary DC jack cap, and then in-
sert the accessory power plug into the jack.
5. Turn the accessory on.
6. When the auxiliary DC jack is not being used, cover it with the cap.1. Trailer hitch receiver
1
1. Auxiliary DC jack cap
2. Auxiliary DC jackMaximum rated capacity for the auxiliary DC
jack:DC 12 V, 10 A (120 W)
21
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4-26
4
NOTICEECB00121Do not use accessories requiring more than
the above maximum capacity. This may
overload the circuit and cause the fuse to
blow.
If accessories are used without the engine
running or with the headlights turned on, the
battery will lose its charge and engine start-
ing may become difficult.
Do not use an automotive cigarette lighter or
other accessories with a plug that gets hot
because the jack can be damaged. UB1660E0.book Page 26 Thursday, February 26, 2015 4:01 PM
Page 59 of 180

5-1
5
EBU19203
PRE-OPERATION CHECKS
EBU19226Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always
follow the inspection and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWB00482Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equip-
ment damage. Do not operate the vehicle if you find any problem. If a problem cannot be corrected
by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:
ITEMROUTINE PAGE
Fuel • Check fuel level in fuel tank,
and add recommended fuel if neces-
sary.
• Check fuel line for leakage. Correct if necessary. 4-19, 5-3
Engine oil • Check oil level in engine, and add recommended oil to specified
level if necessary.
• Check ATV for oil leakage. Correct if necessary. 5-3, 8-21
Final gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-25
Differential gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-28
Coolant • Check coolant level in reservoir, and add recommended coolant to
specified level if necessary.
• Check cooling system for leakage. Correct if necessary. 5-3, 8-30
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5-2
5
Front brake• Check operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear, and replace if necessary.
• Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
• Check hydraulic system for leakage. Correct if necessary. 5-3, 8-43, 8-44, 8-45
Rear brake • Check operation, and correct if necessary.
• Lubricate cables if necessary.
• Check lever and pedal free play, and adjust if necessary. 5-3, 8-43, 8-46
Throttle lever • Make sure that operation is smooth. Lubricate cable and lever
housing if necessary.
• Check lever free play, and adjust if necessary. 5-4, 8-42
Control cables • Make sure that operation is smooth. Lubricate if necessary. 8-49
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. 5-4
Brake pedal • Make sure that operation is smooth. Lubricate pedal pivoting point
if necessary. 8-51
Brake levers • Make sure that operation is smooth. Lubricate lever pivoting points
if necessary. 8-50
Axle boots • Check for cracks or damage, and replace if necessary. 8-48
Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments, lights and
switches • Check operation, and correct if necessary. 5-7
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5-3
5
EBU19542FuelMake sure that there is sufficient fuel in the tank.
(See page 4-19.)EBU19561Engine oilMake sure that the engine oil is at the specified
level. Add oil as necessary. (See page 8-21.)EBU19591Final gear oilMake sure that the final gear oil is at the specified
level. Add oil as necessary. (See page 8-25.)EBU19601Differential gear oilMake sure that the differential gear oil is at the
specified level. Add oil as necessary. (See page
8-28.)EBU19632CoolantMake sure that the coolant is at the specified level.
Add coolant as necessary. (See page 8-30.)
TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture. EBU28533Front and rear brakesBrake levers and brake pedal
Check that there is no free play in the front
brake lever. If there is free play, have a Yamaha
dealer check the brake system.
Check for correct free play in the rear brake le-
ver and brake pedal. If the free play is incorrect,
adjust it. (See page 8-46.)
Check operation of the levers and pedal. They
should move smoothly and there should be a
firm feeling when the brake is applied. If not,
have a Yamaha dealer check them.
Brake fluid level (front brake)
Check the brake fluid level. Add fluid if necessary.
(See page 8-44.)
Specified brake fluid:DOT 4
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5-4
5Brake fluid leakage (front brake)
Check to see if any brake fluid is leaking out of the
hose, joint or brake fluid reservoir of the front
brake. Apply the brake firmly for one minute. If the
lever moves slowly inward, there may be a leak in
the brake system. If there is any leakage, the brake
system should be checked by a Yamaha dealer.
Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance,
check the brake pads and friction plates for wear.
(See page 8-43.)
EBU19762Throttle leverCheck the operation of the throttle lever. It must
open smoothly and spring back to the idle position
when released. Have a Yamaha dealer correct if
necessary.EBU19815TiresCheck tire pressure regularly to make sure it is at
the recommended specifications. Also check for
wear and damage. Tire pressure
Use the low-pressure tire gauge to check and ad-
just tire pressures when the tires are cold. Tire
pressures must be equal on both sides.
WARNING! Operation of this vehicle with im- proper tire pressure may cause severe injury or
death from loss of control or rollover. Tire
pressure below the minimum specified could
also cause the tire to dislodge from the rim un-
der severe riding conditions.
[EWB02542]
Set tire
pressures to the following specifications:
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5-5
5
The low-pressure tire gauge is included as stan-
dard equipment. Make two measurements of the
tire pressure and use the second reading. Dust or
dirt in the gauge could cause the first reading to be
incorrect. Tire wear limit
When the tire groove decreases to 3 mm (0.12 in)
due to wear, replace the tire.
Recommended tire pressure:
Front35.0 kPa (0.350 kgf/cm², 5.0 psi)
Rear 30.0 kPa (0.300 kgf/cm², 4.4 psi)
Minimum tire pressure: Front32.0 kPa (0.320 kgf/cm², 4.6 psi)
Rear 27.0 kPa (0.270 kgf/cm², 4.0 psi)
Maximum tire seating pressure: Front250 kPa (2.5 kgf/cm², 36 psi)
Rear 250 kPa (2.5 kgf/cm², 36 psi)
1. Low-pressure tire gauge
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5-6
5Tire information
This ATV is equipped with tubeless tires with
valves.
WARNING
EWB02552Use of improper tires on this ATV may cause
loss of control, increasing your risk of an acci-
dent. After extensive tests, only the tires listed below
have been approved for this model by Yamaha
Motor Manufacturing Corporation of America. Aftermarket tires and rims
The tires and rims that came with your ATV were
designed to match the performance capabilities
and to provide the best combination of handling,
braking, and comfort. Other tires, rims, sizes, and
combinations may not be appropriate.1. Tire wear limit
Front:
Manufacturer/model:CHENG SHIN/C828 (AUS/NZL)
MAXXIS/MU19 (EUR/FRA/GBR)
Size: AT25 x 8-12
Ty p e : Tu b e l e s s
Rear: Manufacturer/model:CHENG SHIN/C828 (AUS/NZL)
MAXXIS/MU20 (EUR/FRA/GBR)
Size: AT25 x 10-12
Ty p e : Tu b e l e s s
UB1660E0.book Page 6 Thursday, February 26, 2015 4:01 PM