Page 15 of 154

1-5
1
**.* kPa
*.** kgf/cm²
*.* psi**.* kPa
*.** kgf/cm²
*.* psi
NEVER use with drugs or alcohol.
NEVER store fuel or flammable liquids.
This unit contains high-pressure nitrogen
gas.
Mishandling can cause an explosion. Do not
incinerate, puncture or open.
Use unleaded gasoline only.
Measure the tire pressure when the tires are
cold.Adjust the tire pressure.
Improper tire pressure can cause loss of
control.
Loss of control can result in severe injury or
death.
Turning the ATV in 4WD-LOCK
(“DIFF.LOCK”) takes more effort.
Operate at a slow speed and allow extra
time and distance for maneuvers to avoid
loss of control.
This pictogram shows the loading limits
and/or maximum load capacity for this ATV.
Follow all load limits and other loading
guidelines in this manual.
Load may include the driver, passenger,
human protective gear, accessories, goods,
luggage, and all other load related items.
Make sure you do not exceed the load limits.
Overloading can cause loss of control.
Loss of control can result in severe injury or
death.
U1AS61E0.book Page 5 Thursday, February 11, 2010 2:17 PM
Page 19 of 154

1-9
1
WARNING
OPERATING TIRE PRESSURE : Set with tires cold
Recommended
: Front
: 27.5
kPa,
Rear
: 27.5
kPa,
Minimum
: Front
: 24.5
kPa,
Rear
: 24.5
kPa,
Never set tire pressure below minimum.
It could cause the tire to dislodge from the rim.LOADINGMaximum weight capacity:
100 kg,(220 lbs).
Includes weight of operator, cargo and accessories.Improper tire pressure or overloading can cause
loss of control.
Loss of control can result in severe injury or
death.
4.0 psi
4.0 psi
3.6 psi
3.6 psi(
()
()
())
4D3-2816M-00 WARNINGNEVER ride as a
passenger.
Passengers can causea loss of control,resulting in SEVEREINJURY or DEATH.5FE-2151H-01
WARNING
Improper ATV use can result in SEVERE
INJURY or DEATH.ALWAYS USE
NEVER USE
NEVER CARRY NEVER USE
A N A P PROV E D O N P UB L IC PASSENGERS W IT H D RU G S
HELMET AND ROADS
OR ALCOHOL
PROTECTIVE
GEAR
NEVER
operate :
without proper training or instruction. at speeds too fast for your skills or
the conditions. on public roads-a collision can occur
with another vehicle. with a passenger-passengers affect balance
and steering and increase risk
of losing control.ALWAYS : use proper riding techniques to avoid
vehicle overturns on hills and rough terrainand it turns. avoid paved surfaces-pavement mayseriously affect handling and control.LOCATE AND READ OWNER'S MANUAL.
FOLLOW ALL INSTRUCTIONS AND WARNINGS.
5FE-21568-11
5 4 3
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Page 22 of 154

2-3
2speed 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 be sure there are no obstacles or people
behind you when you operate in reverse. When
it is safe to proceed in reverse, go slowly.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
EWB00071Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon monoxide,
a deadly gas. Breathing carbon monoxide can
cause headaches, dizziness, drowsiness, nau-
sea, confusion, and eventually death.
Carbon Monoxide is a colorless, odorless,
tasteless gas which may be present even if you
do not see or smell any engine exhaust. Deadly
levels of carbon monoxide can collect rapidly
U1AS61E0.book Page 3 Thursday, February 11, 2010 2:17 PM
Page 51 of 154

5-2
5
Front brakeCheck 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 recommended brake
fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary.5-4, 8-29, 8-30, 8-32
Rear brakeCheck 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 recommended brake
fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary.5-4, 8-29, 8-30, 8-32
ClutchCheck operation, and correct if necessary.
Lubricate cable if necessary.
Check lever free play, and adjust if necessary.8-35
Throttle leverMake sure that operation is smooth. Lubricate cable and lever hous-
ing if necessary.
Check cable free play, and adjust if necessary.5-5, 8-27
Control cablesMake sure that operation is smooth. Lubricate if necessary. 8-39
Drive chainCheck chain slack, and adjust if necessary.
Check chain condition. Lubricate if necessary.5-5, 8-36, 8-38
Wheels and tiresCheck wheel condition, and replace if damaged.
Check tire condition and tread depth. Replace if necessary.
Check air pressure. Correct if necessary.5-5
Shift pedalMake sure that operation is smooth.
Correct if necessary.8-40
Brake pedal Make sure that operation is smooth. Lubricate pedal pivoting point if
necessary.8-40 ITEM ROUTINE PAGE
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Page 54 of 154

5-5
5
EBU19761Throttle lever Check 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.EBU19770Drive chain Check the condition of the drive chain and check
the drive chain slack. Lubricate and adjust the
drive chain as necessary. (See page 8-36.)EBU19794Tires Check 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 couldalso cause the tire to dislodge from the rim un-
der severe riding conditions.
[EWB02541]
Set tire
pressures to the following specifications:
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.Recommended tire pressure:
Fro nt
27.5 kPa (0.275 kgf/cm², 4.0 psi)
Rear
27.5 kPa (0.275 kgf/cm², 4.0 psi)
Minimum tire pressure:
Fro nt
24.5 kPa (0.245 kgf/cm², 3.6 psi)
Rear
24.5 kPa (0.245 kgf/cm², 3.6 psi)
Maximum tire seating pressure:
Fro nt
250 kPa (2.5 kgf/cm², 36 psi)
Rear
250 kPa (2.5 kgf/cm², 36 psi)
U1AS61E0.book Page 5 Thursday, February 11, 2010 2:17 PM
Page 55 of 154
5-6
5
Tire wear limit
When the tire groove decreases to 3 mm (0.12 in)
due to wear, replace the tire.Tire information
This ATV is equipped with tubeless tires with
valves.
WARNING
EWB02551Use 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 Co., Ltd.
1. Low-pressure tire gauge
1. Tire wear limit
U1AS61E0.book Page 6 Thursday, February 11, 2010 2:17 PM
Page 89 of 154
8-2
8
EBU27111Owner’s manual and tool kit Be sure to put this owner’s manual in the plastic
bag and to always carry it as well as the owner’s
tool kit and the low-pressure tire gauge in their re-
spective compartments under the seat.
The service information included in this manual
and the tools provided in the owner’s tool kit are in-
tended to assist you in the performance of preven-
tive maintenance and minor repairs. However,additional tools such as a torque wrench may be
necessary to perform certain maintenance work
correctly.
TIPIf you do not have the tools or experience required
for a particular job, have a Yamaha dealer perform
it for you.
1. Owner’s manual
2. Owner’s tool kit
3. Low-pressure tire gauge
1
21
2
3
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Page 93 of 154

8-6
8
5*Brake hosesCheck for cracks or other damage, and replace if
necessary.√√√√
Replace. Every 4 years
6*Parking brakeCheck operation and adjust if necessary.√√√√√
7*WheelsCheck runout and for damage, and replace if nec-
essary.√ √√√
8*TiresCheck tread depth and for damage, and replace if
necessary.
Check air pressure and balance, and correct if
necessary.√ √√√
9*Wheel hub bearingsCheck for looseness or damage, and replace if
necessary.√ √√√
10*Swingarm pivotsCheck operation and for excessive play, and re-
place bearings if necessary.
Lubricate with lithium-soap-based grease.√√√
11*Upper and lower
arm pivotsLubricate with lithium-soap-based grease.√√√
12 Drive chainCheck chain slack and adjust if necessary.
Check rear wheel alignment and correct if neces-
sary.
Clean and lubricate.√√√√√
13*Drive chain rollerCheck for wear and replace if necessary.√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320
U1AS61E0.book Page 6 Thursday, February 11, 2010 2:17 PM