
8-43
8
TIPThis ATV is equipped with a wet, multiple-disc
type rear brake, which is located inside of the final
gear case. EBUM0191Front brake pads
Each brake pad is provided with a wear indicator
groove, which allows you to check the brake pad
wear without having to disassemble the brake. To
check the brake pad wear, check the wear indica-
tor groove. If a brake pad has worn to the point
that the wear indicator groove has almost disap-
peared, have a Yamaha dealer replace the brake
pads as a set.
TIPThe wheels need to be removed to check the
brake pads. (See page 8-64.) EBU30321Rear brake friction plates
The rear brake friction plates must be checked
and, if necessary, replaced by a Yamaha dealer at
the intervals specified in the periodic maintenance
and lubrication chart.1. Wear indicator groove
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8
EBU29843Checking the brake fluid levelBefore riding, check that the brake fluid is above
the minimum level mark. Check the brake fluid lev-
el with the top of the reservoir level. Replenish the
brake fluid if necessary.
WARNING
EWB02721Improper maintenance can result in loss of
braking ability. Observe these precautions:
Insufficient brake fluid may allow air to enter
the brake system, reducing braking perfor-
mance.
Clean the filler cap before removing. Use
only DOT 4 brake fluid from a sealed contain-
er.
Use only the specified brake fluid; otherwise,
the rubber seals may deteriorate, causing
leakage.
Refill with the same type of brake fluid. Add-
ing a brake fluid other than DOT 4 may result
in a harmful chemical reaction.
Be careful that water does not enter the
brake fluid reservoir when refilling. Water will
significantly lower the boiling point of the flu-
id and may result in vapor lock.
NOTICEECB01161Brake fluid may damage painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately. As the brake pads wear, it is normal for the brake
fluid level to gradually go down. A low brake fluid
level may indicate worn brake pads and/or brake
system leakage; therefore, be sure to check the
1. Minimum level markSpecified brake fluid:
DOT 4
2WD
4WD
1
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8
brake pads for wear and the brake system for
leakage. If the brake fluid level goes down sud-
denly, have a Yamaha dealer check the cause be-
fore further riding.
EBU24283Changing the brake fluidHave a Yamaha dealer change the brake fluid at
the intervals specified in the periodic maintenance
and lubrication chart. In addition, have the oil seals
of the brake master cylinder and calipers as well
as the brake hoses replaced at the intervals listed
below or whenever they are damaged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.EBU24395Checking the front brake lever free
playThe brake lever free play must be checked at the
intervals specified in the periodic maintenance
and lubrication chart. The brake lever should have
no free play as shown. If there is free play, have a
Yamaha dealer check the brake system.
EBU34242Adjusting the rear brake lever and
brake pedal free playThe rear brake lever and brake pedal free play
must be checked and, if necessary, adjusted at
the intervals specified in the periodic maintenance
and lubrication chart.
Adjusting the brake lever free play
The brake lever free play should measure 6.0–7.0
mm (0.24–0.28 in) (YFM70KDXH, YFM70KPAH,
YFM70KPHH, YFM70KPXH). If the free play is in-
correct, adjust it as follows.1. No brake lever free play
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8
EBU24231Axle bootsThe axle boots must be checked for damage at
the intervals specified in the periodic maintenance
and lubrication chart. Check the axle boots for
tears or damage. If any damage is found, have
them replaced by a Yamaha dealer.
EBU34270Brake light switchesThe brake light, which is activated by the brake
pedal and brake levers, should come on just be-
fore braking takes effect.
The rear brake light switch can be adjusted as fol-
lows, but the front brake light switch should be ad-
justed by a Yamaha dealer.
Turn the rear brake light switch adjusting nut while
holding the brake light switch in place. To make
the brake light come on earlier, turn the adjusting
nut in direction (a). To make the brake light come
on later, turn the adjusting nut in direction (b).
1. Front axle boot (each side)
1
1
1. Rear axle boot (each side)
1
1
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8
EBU24964Checking the wheel hub bearingsThe front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smooth-
ly, have a Yamaha dealer check the wheel hub
bearings.
EBU25023Checking the stabilizer bushesThe stabilizer bushes must be checked for cracks
or damage at the intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer replace the stabilizer bush-
es if necessary.
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8
EBU25053Lubricating the rear knuckle pivotsThe rear knuckle pivots must be lubricated at the
intervals specified in the periodic maintenance
and lubrication chart.TIPFor parts equipped with a grease nipple, use a
grease gun.
EBU25094Lubricating the steering shaftThe steering shaft must be lubricated by a
Yamaha dealer at the intervals specified in the pe- riodic maintenance and lubrication chart.TIPFor parts equipped with a grease nipple, use a
grease gun.
Recommended lubricant: Lithium-soap-based grease
1. Grease nippleRecommended lubricant:Lithium-soap-based grease
1
1
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12
Indicator lights and warning lights ................................. 4-2
Instruments, lights and switches ................................... 5-7LLabel locations ............................................................... 1-1
Light switch .................................................................. 4-10
Low-range indicator light (YFM70KPXH / YFM70KPHH / YFM70KPSH / YFM70KPAH) .............. 4-3MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................8-5
Maintenance chart, emission control system ................ 8-3
Model label ................................................................... 11-1
Multi-function display (YFM70KPXH / YFM70KPHH / YFM70KPSH / YFM70KPAH) ...................................... 4-6NNeutral indicator light .....................................................4-3OOn-Command differential gear lock switch (YFM70KPSH) ............................................................ 4-13
On-Command four-wheel-drive switch (YFM70KPSH) ............................................................ 4-12
Override switch (YFM70KPSH) .................................... 4-11
Owner’s manual and tool kit .......................................... 8-2PPanels, removing and installing ..................................... 8-9
Park indicator light ......................................................... 4-3
Parking ........................................................................... 6-5
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRear brake, adjusting the lever, pedal free play ........... 8-45 Rear knuckle pivots, lubricating ................................... 8-52
Reverse indicator light ................................................... 4-3
Riding your ATV ............................................................. 7-1
SSafety information .......................................................... 2-1
Seat .............................................................................. 4-21
Shock absorber assemblies, adjusting the front and
rear (YFM70KPXH / YFM70KPHH / YFM70KPSH /
YFM70KPAH) ............................................................. 4-24
Spark arrester, cleaning ............................................... 8-39
Spark plug, checking ................................................... 8-17
Specifications .............................................................. 10-1
Speed limiter ................................................................ 4-17
Stabilizer bushes, checking ......................................... 8-51
Starting the engine ......................................................... 6-1
Start switch .................................................................. 4-10
Steering shaft, lubricating ............................................ 8-52
Storage .......................................................................... 9-2
Storage compartment .................................................. 4-22TTail/brake light bulb, replacing ..................................... 8-63
Throttle lever ........................................................ 4-16, 5-4
Throttle lever free play, adjusting ................................. 8-41
Tires ............................................................................... 5-4
Trailer hitch (YFM70KPXH / YFM70KPHH / YFM70KPSH / YFM70KPAH) .................................... 4-25
Troubleshooting ........................................................... 8-65
Troubleshooting charts ................................................ 8-66VValve clearance ............................................................ 8-42
V-belt case drain plug .................................................. 8-41
Vehicle identification number ....................................... 11-1
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