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8-6
8
4*Brake hoses • Check for cracks or other damage, and replace if
necessary. √√√√
• Replace. Every 4 years
5 *Brake fluid • Change. Every 2 years
6 *Wheels • Check runout and for damage, and replace if nec-
essary. √ √√√
7 *Tires • Check tread depth and for damage, and replace if
necessary.
• Check air pressure and balance, and correct if necessary. √ √√√
8 *Wheel hub bearings • Check for looseness or damage, and replace if
necessary. √ √√√
9 *V- b e l t • Check for wear, cracks or other damage, and re-
place if necessary. √ √√√
10 *Chassis fasteners • Make sure that all nuts, bolts, and screws are
properly tightened. √√√√√
11 *Shock absorber as-
semblies • Check operation and correct if necessary.
• Check for oil leakage and replace if necessary.
√√√
12 *Stabilizer bushes • Check for cracks or other damage, and replace if
necessary. √√√
13 *Rear knuckle pivots • Lubricate with lithium-soap-based grease. √√√
NO.
ITEM CHECK OR MAINTENANCE
JOB INITIAL
EVERY
Whichev-
er comes first month136612
km (mi) 320
(200) 1300
(800) 2500
(1600) 2500
(1600) 5000
(3200)
hours 20 80 160 160 320UB1661E0.book Page 6 Thursday, May 12, 2016 2:47 PM
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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
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
EBU30521Replacing a fuse
The main fuse, the fuel injection system fuse, the
EPS fuse, and the fuse box are located under pan-
el A. (See page 8-9.)
If a fuse is blown, replace it as follows.1. Turn the key to “ ” (off) and turn off all elec- trical circuits.
1. Fuse box
2. Main fuse
3. EPS fuse (for EPS model)
4. Fuel injection system spare fuse
5. Fuel injection system fuse
2345
1
1. Headlight fuse
2. Signaling system fuse
3. Radiator fan motor fuse
4. Ignition fuse
5. Four-wheel-drive motor fuse (YFM70KPSH)
6. Auxiliary DC jack fuse
7. Spare fuse
8. Spare fuse (YFM70KPXH / YFM70KPHH / YFM70KPSH / YFM70KPAH)
123456
87
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8
NOTICEECB00641To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse. 2. Remove the blown fuse, and then install anew fuse of the specified amperage.
WARNING! Always use a fuse of the spec-
ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02173]
3. Turn the key to “ ” (on) and turn on the elec-trical circuits to check if the devices operate.
Specified fuses:
Main fuse:40.0 A
Headlight fuse: 10.0 A (YFM70KDXH)
15.0 A (YFM70KPAH, YFM70KPHH,
YFM70KPSH, YFM70KPXH)
Ignition fuse: 10.0 A
Four-wheel-drive motor fuse: 10.0 A (YFM70KPSH)
Signaling system fuse: 10.0 A
Auxiliary DC jack fuse: 10.0 A
Radiator fan motor fuse: 20.0 A
Fuel injection system fuse: 15.0 A
EPS fuse: 40.0 A (YFM70KPAH, YFM70KPHH,
YFM70KPSH, YFM70KPXH)
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8-64
83. Insert a new bulb into the bulb holder, push it
in, and then turn it clockwise until it stops.
4. Install the bulb holder (together with the bulb) by turning it clockwise.
EBU25652Removing a wheel1. Place the ATV on a level surface.
2. Loosen the wheel nuts.
3. Elevate the ATV and place a suitable standunder the frame.
4. Remove the nuts from the wheel.
5. Remove the wheel.
EBU36241Installing a wheel1. Install the wheel and the nuts.TIP The arrow mark “ ” on the tire must point to-
ward the rotating direction of the wheel.
For YFM70KDXH / YFM70KPXH /
YFM70KPHH / YFM70KPAH: tapered nuts are
used for both the front and rear wheels. Install
the nuts with their tapered side towards the
wheel.
1. Wheel nut
1
1
1. Arrow mark
1
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8-65
8
2. Lower the ATV to the ground.
3. Tighten the wheel nuts to the specified
torques.
EBU25741TroubleshootingAlthough Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the
fuel, compression, or ignition systems, for exam-
ple, can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vi-
tal systems yourself. However, should your ATV
require any repair, take it to a Yamaha dealer,
whose skilled technicians have the necessary
tools, experience, and know-how to service the
ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02281Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.
1. Tapered nutTightening torques:Front wheel nut:55 N·m (5.5 kgf·m, 40 lb·ft)
Rear wheel nut: 55 N·m (5.5 kgf·m, 40 lb·ft)1
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9-1
9
EBU25861
CLEANING AND STORAGE
EBU25882CleaningFrequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.1. Before cleaning the ATV: a. Block off the end of the exhaust pipe toprevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler caps are properly installed.
2. If the engine case is excessively greasy, apply degreaser with a paint brush. Do not apply
degreaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden hose. Use only enough pressure to do the
job. WARNING! Wet brakes may have re-
duced stopping ability, increasing the
chance of an accident. Test the brakes af-
ter washing. Apply the brakes several
times at slow speeds to let friction dry out
the linings.
[EWB02312]
NOTICE: Excessive wa-
ter pressure may cause water seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical
devices. Many expensive repair bills have
resulted from improper high-pressure de-
tergent applications such as those avail-
able in coin-operated car washers.
[ECB00712]
4. Once most of the dirt has been hosed off,
wash all surfaces with warm water and mild,
detergent-type soap. An old toothbrush or
bottle brush is handy for hard-to-reach pla-
ces.
5. Rinse the ATV off immediately with clean wa- ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy.
7. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.
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