Page 145 of 180
8-47
8
3. To increase the brake pedal free play, turn the
brake pedal free play adjusting nut in direc-
tion (a). To decrease the brake pedal free
play, turn the adjusting nut in direction (b).
4. Tighten the locknut.
5. Install the panel.
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.
1. Brake pedal free play adjusting nut
2. Locknut
2
(a)
(b)
1
1. Front axle boot (each side)
1
1
UB5K60E0.book Page 47 Monday, May 28, 2018 11:35 AM
Page 146 of 180

8-48
8
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).
EBU24905Checking and lubricating the cablesThe operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec-
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
1. Rear axle boot (each side)
1
1
1. Rear brake light switch adjusting nut
2. Rear brake light switchRecommended lubricant:
Yamaha cable lubricant or other suitable cable lubricant
1
2 (b)
(a)
UB5K60E0.book Page 48 Monday, May 28, 2018 11:35 AM
Page 147 of 180
8-49
8
WARNING
EWB02582Inspect cables frequently and replace if
damaged. Corrosion can result when the ca-
ble sheaths become damaged, and cables
can also become frayed or kinked, which
could restrict the operation of controls and
lead to an accident or injury.
Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or
do not work smoothly, you could be unable
to control the ATV, which could lead to an
accident or collision. EBU28712Checking and lubricating the front and
rear brake leversThe operation of the front and rear brake levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary. Front brake lever
Recommended lubricants:
Front brake lever:Silicone grease
Rear brake lever: Lithium-soap-based greaseUB5K60E0.book Page 49 Monday, May 28, 2018 11:35 AM
Page 148 of 180
8-50
8Rear brake lever
EBU28833Checking and lubricating the brake
pedalThe operation of the brake pedal should be
checked before each ride, and the pedal pivot
should be lubricated if necessary.TIPTo access the brake pedal pivot, remove panel G.
(See page 8-9.)
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.
Recommended lubricant: Lithium-soap-based grease
UB5K60E0.book Page 50 Monday, May 28, 2018 11:35 AM
Page 149 of 180
8-51
8
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.
EBU25054Lubricating the rear knuckle pivotsThe rear knuckle pivots must be lubricated at the
intervals specified in the periodic maintenance
and lubrication chart.Recommended lubricant:Lithium-soap-based grease
UB5K60E0.book Page 51 Monday, May 28, 2018 11:35 AM
Page 150 of 180
8-52
8
TIPFor parts equipped with a grease nipple, use a
grease gun. EBU25095Lubricating the steering shaftThe steering shaft must be lubricated by a
Yamaha dealer at the intervals specified in the pe- riodic maintenance and lubrication chart. YFM70KDXK / YFM70KDHK
YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK1. Grease nippleRecommended lubricant:
Lithium-soap-based grease
1
1
UB5K60E0.book Page 52 Monday, May 28, 2018 11:35 AM
Page 151 of 180

8-53
8
TIPFor parts equipped with a grease nipple, use a
grease gun. EBU2904FBatteryThis model is equipped with a 12-volt VRLA
(valve-regulated lead-acid) battery. There is no
need to check the electrolyte or add distilled wa-
ter. However, the battery lead connections need
to be checked and tightened, and the battery ter-
minals cleaned if corroded. If the battery seems to
have discharged, recharge it as soon as possible.TIPWear gloves and eye protection in a ventilated
area away from sparks and open flames. Wash
hands after handling.
It is recommended to have the battery serviced
by a Yamaha dealer.
WARNING
EWB02161Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause severe burns. Avoid contact with skin,
eyes or clothing. Always shield your eyes when
working near batteries.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
EYES: Flush with water for 15 minutes and get
prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of
ignition away. Ventilate when charging or using
in an enclosed space.
KEEP OUT OF REACH OF CHILDREN. To remove the battery
1. Remove panel A. (See page 8-9.)
2. Remove the front carrier by removing the bolts.
UB5K60E0.book Page 53 Monday, May 28, 2018 11:35 AM
Page 152 of 180
8-54
83. Remove the battery holding plate by remov-
ing the nuts.
4. Disconnect the negative battery lead first, then the positive battery lead by removing
their bolt. NOTICE: When removing the bat-
tery, the main switch must be off, and the
negative lead must be disconnected be-
fore the positive lead.
[ECB01002]
5. Pull the battery out of its compartment.
1. Front carrier
2. Carrier bolt (upper)
1. Carrier bolt (under the fenders)
2. Carrier bolt (lower)
1
2
2
1
2
2
1
1. Battery holding plate
2. Nut
3. Negative battery lead (black)
4. Positive battery lead (red)
12
43
UB5K60E0.book Page 54 Monday, May 28, 2018 11:35 AM