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5-4
5
Brake 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 8-42.)
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.EBU19816TiresCheck tire pressure regularly to make sure it is at
the recommended specifications. Also check for
wear and damage. Tire pressure
Use a tire pressure gauge to check and adjust tire
air pressure when the tires are cold. The tire air
pressure 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]
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)
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5-5
5Tire pressure gauge
A low-pressure tire gauge is included as standard
equipment with your vehicle. (See page 8-2.)
When using the tire pressure gauge, make two
measurements and use the second reading as grit
in the gauge or tire valve could have caused the
first reading to be incorrect.
Tire wear
If the tire is damaged or the tire tread depth de-
creases to 3 mm (0.12 in) or less, replace the tire. Tire information
This ATV is equipped with tubeless tires and tire
air valves. After extensive tests, only the tires list-
ed below are approved for this model by Yamaha.
WARNING
EWB02552Use of improper tires on this ATV may cause
loss of control, increasing your risk of an acci-
dent.
1. Low-pressure tire gauge
2. Tire air valve
2
1
1. Tire tread depth
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5
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.
EBU19841Chassis fastenersMake sure that all nuts, bolts and screws are
properly tightened.EBU19851Instruments, lights and switchesCheck that all instruments, lights and switches are
working properly. Correct if necessary.
Front:
Manufacturer/model:CHENG SHIN/C828
(YFM70KDXJ_AUS/NZL,
YFM70KPXJ_AUS/NZL)
MAXXIS/MU19 (YFM70KDHJ,
YFM70KDXJ_EUR/FRA/GBR,
YFM70KPAJ, YFM70KPHJ,
YFM70KPSJ,
YFM70KPXJ_EUR/FRA/GBR)
Size: AT25 x 8-12
Ty p e : Tu b e l e s s
Rear: Manufacturer/model:CHENG SHIN/C828
(YFM70KDXJ_AUS/NZL,
YFM70KPXJ_AUS/NZL)
MAXXIS/MU20 (YFM70KDHJ,
YFM70KDXJ_EUR/FRA/GBR,
YFM70KPAJ, YFM70KPHJ,
YFM70KPSJ,
YFM70KPXJ_EUR/FRA/GBR)
Size:AT25 x 10-12
Ty p e : Tu b e l e s s
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6
EBU19882
OPERATION
EBU19902Read the Owner’s Manual carefully before riding
the ATV. If there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWB00632Read the Owner’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury. EBU34161Starting the engineNOTICEECB00151See the “Engine break-in” section on page 6-4
prior to operating the engine for the first time. 1. Turn the key to “ ” (on) and the engine stopswitch to “ ”.
The EPS warning light (for equipped models)
should come on and stay on until the engine
is started. The following warning lights should come on
for a few seconds, then go off.
Coolant temperature warning light
Engine trouble warning light
Fuel level warning light (for equipped mod-
els)
NOTICEECB00826To avoid possible damage, do not operate the
ATV if a warning light does not work as de-
scribed above. 2. Apply the brake pedal, and then shift the drive
select lever into the neutral or park position.
The corresponding indicator light should
come on. If the indicator light does not come
on, have a Yamaha dealer check the electrical
circuit.TIPThis model is equipped with an ignition circuit cut-
off system. The engine can be started under the
following conditions:
The drive select lever is in the neutral or park po-
sition.
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6-2
6
The rear brake lever or brake pedal is applied
with the drive select lever in any position. How-
ever, it is recommended to shift into the neutral
or park position before starting the engine.
3. Apply the rear brake lever or brake pedal.
4. Completely close the throttle lever and start
the engine by pushing the start switch.TIPIf the engine fails to start, release the start switch,
then push it again. Pause a few seconds before
the next attempt. Each cranking should be as
short as possible to preserve battery energy. Do
not crank the engine more than 10 seconds on
each attempt. NOTICEECB00164For maximum engine life, never accelerate
hard when the engine is cold!
EBU36230Operating the drive select lever and
driving in reverseNOTICEECB03330Do not shift without coming to a complete stop
and waiting for the engine to return to normal
idle speed. Damage to the engine or drivetrain
may occur. Shifting: Neutral to High-range and High-range
to Low-range1. Bring the ATV to a complete stop.
2. Apply the brake pedal, and then shift by mov- ing the drive select lever along the shift guide.TIPMake sure that the drive select lever is completely
shifted into position.
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6-3
63. Release the brake pedal, and then open thethrottle lever gradually.
Shifting: Neutral to Reverse and Reverse to
Park
WARNING
EWB00721Improper operation in reverse could make you
hit an obstacle or even a person behind you,
resulting in serious injury. When you shift into reverse, make sure there are no people or ob-
stacles behind you. When it is safe to proceed,
go slowly.
1. Bring the ATV to a complete stop.
2. Apply the brake pedal.
3. Shift from neutral to reverse or from reverse
to park and vice versa by moving the drive se-
lect lever along the shift guide.
1. Drive select lever
2. L (Low-range)
3. H (High-range)
4. N (Neutral)
5. R (Reverse)
6. P (Park)
1
23456
LHNRP
1. Drive select lever
2. L (Low-range)
3. H (High-range)
4. N (Neutral)
5. R (Reverse)
6. P (Park)
1
23456
LHNRP
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TIPWhen in reverse, the reverse indicator light
should come on. If the indicator light does not
come on, have a Yamaha dealer check the elec-
trical circuit.
Due to the synchronizing mechanism in the en-
gine, the indicator light may not come on until
the ATV starts moving. 4. Check behind for people or obstacles, and
then release the brake pedal.
5. Open the throttle lever gradually and continue to watch to the rear while backing.EBU20684Engine break-inThere is never a more important period in the life
of your engine than the first 320 km (200 mi) or 20
hours of operation. For this reason, you should fol-
low the engine break-in instructions carefully.
Since the engine is brand new, do not put an ex-
cessive load on it for the first 320 km (200 mi) or
20 hours. During this period the various parts in
the engine wear and polish themselves to the cor-
rect operating clearances. Avoid prolonged full-
throttle operation or any condition that might re-
sult in engine overheating. 0–160 km (0–100 mi) or 0–10 hours
Avoid prolonged operation above 1/2 throttle.
Vary the speed of the ATV regularly. Do not oper-
ate it at one set throttle position.
160–320 km (100–200 mi) or 10–20 hours
Avoid prolonged operation above 3/4 throttle. Rev
the engine freely, but do not use full throttle at any
time.
320 km (200 mi) or 20 hours and beyond
The ATV can now be operated normally.
NOTICEECB00221If any engine trouble should occur during the
engine break-in period, immediately have a
Yamaha dealer check the ATV. EBU27322ParkingWhen parking the ATV, stop the engine, and shift
the drive select lever into the park position.
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EBU29901Parking on a slope
WARNING
EWB00861Avoid parking on hills or other inclines. Parking
on a hill or other incline could cause the ATV to
roll out of control, increasing the chance of an
accident. If you must park on an incline, place
the ATV transversely across the incline, stop
the engine, shift the drive select lever to the
park position, and then block the front and rear
wheels with rocks or other objects.
Do not park the ATV at all on hills that are so
steep you could not walk up them easily. 1. Bring the ATV to a stop by applying thebrakes.
2. Stop the engine.
3. With the brake pedal applied, shift the drive select lever to the park position.
EBU20911Accessories and loadingEBU20922Genuine Yamaha Accessories
Choosing accessories for your ATV is an impor-
tant decision. Genuine Yamaha Accessories,
which are available only from a Yamaha dealer,
have been designed, tested, and approved by
Yamaha for use on your ATV. Many companies with no connection to Yamaha manufacture parts
and accessories or offer other modifications for
Yamaha vehicles. Yamaha is not in a position to test the products that these aftermarket compa-
nies produce. Therefore, Yamaha can neither en-
dorse nor recommend the use of accessories not
UB1662E0.book Page 5 Monday, April 17, 2017 11:39 AM