
8-53
8
YFM70KDXH
YFM70KPXH / YFM70KPHH / YFM70KPSH /
YFM70KPAH
EBU2904DBatteryThe battery is located under panel A. (See page
8-9.)
This model is equipped with a VRLA (Valve Regu-
lated Lead Acid) battery. There is no need to
check the electrolyte or to add distilled water.
However, the battery lead connections need to be
checked and, if necessary, tightened.
WARNING
EWB02161Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can cau-
se 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.
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8-58
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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8-65
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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8-67
8
Engine overheating
WARNING
EWB02291Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the
recommended coolant as soon as possible. Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
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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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10-5
10
Handlebar-mounted light:12 V, 35.0/36.5 W × 1 (YFM70KPAH, YFM70KPHH,
YFM70KPSH, YFM70KPXH)
Tail/brake light: 12 V, 5.0/21.0 W × 1
Meter lighting: EL (Electroluminescent) (YFM70KPAH, YFM70KPHH,
YFM70KPSH, YFM70KPXH)
Neutral indicator light: LED
Fuel level warning light:
LED (YFM70KDXH)
Reverse indicator light: LED
Coolant temperature warning light: LED
EPS warning light:
LED (YFM70KPAH, YFM70KPHH, YFM70KPSH,
YFM70KPXH)
Park indicator light:
LED
Four-wheel-drive indicator light: 12 V, 1.7 W × 1 (YFM70KDXH)
Four-wheel-drive indicator: LCD (YFM70KPAH, YFM70KPHH, YFM70KPXH)
Engine trouble warning light:
LED
High-range indicator light: LED (YFM70KPAH, YFM70KPHH, YFM70KPSH,
YFM70KPXH) Low-range indicator light:
LED (YFM70KPAH, YFM70KPHH, YFM70KPSH,
YFM70KPXH)
Differential gear lock indicator light: LED (YFM70KPSH)
Fuses:Main fuse:
40.0 A
Fuel injection system fuse: 15.0 A
EPS fuse: 40.0 A (YFM70KPAH, YFM70KPHH, YFM70KPSH,
YFM70KPXH)
Headlight fuse: 10.0 A (YFM70KDXH)
15.0 A (YFM70KPAH, YFM70KPHH, YFM70KPSH,
YFM70KPXH)
Signaling system fuse: 10.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse:
10.0 A
Four-wheel-drive motor fuse: 10.0 A (YFM70KPSH)
Radiator fan motor fuse: 20.0 A
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12
INDEX
AAccessories and loading ................................................ 6-5
Accessories, auxiliary jack ........................................... 4-26
Air filter element, cleaning ........................................... 8-37
Axle boots .................................................................... 8-48BBattery ......................................................................... 8-53
Brake fluid, changing ................................................... 8-45
Brake fluid level, checking ........................................... 8-44
Brake lever free play, checking the front ..................... 8-45
Brake lever, front ......................................................... 4-18
Brake levers, checking and lubricating ........................ 8-49
Brake light switches ..................................................... 8-48
Brake pads and friction plates, checking .................... 8-42
Brake pedal and rear brake lever ................................. 4-18
Brake pedal, checking and lubricating ........................ 8-50
Brakes .......................................................................... 8-42
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................ 8-49
Carrier, front ................................................................. 4-23
Carrier, rear .................................................................. 4-23
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................5-3, 8-29
Coolant temperature warning light ................................ 4-3DDifferential gear lock indicator (YFM70KPSH) ............... 4-6
Differential gear oil ................................................5-3, 8-27Drive lever (YFM70KDXH / YFM70KPXH /
YFM70KPHH / YFM70KPAH) .................................... 4-15
Drive select lever ......................................................... 4-19
Drive select lever and driving in reverse ........................ 6-2
EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge .................................. 8-20
Engine stop switch ...................................................... 4-10
Engine trouble warning light .......................................... 4-4
EPS warning light (for EPS model) ................................ 4-5FFinal gear oil ......................................................... 5-3, 8-24
Four-wheel-drive indicator light (YFM70KDXH) ............. 4-5
Four-wheel-drive indicator (YFM70KPXH / YFM70KPHH / YFM70KPSH / YFM70KPAH) ............. 4-5
Fuel ....................................................................... 4-19, 5-3
Fuel level warning light (YFM70KDXH) .......................... 4-4
Fuel tank cap ............................................................... 4-19
Fuses, replacing .......................................................... 8-57HHandlebar switches ....................................................... 4-9
Headlight beam, adjusting ........................................... 8-62
Headlight bulb, replacing ............................................. 8-59
High-range indicator light (YFM70KPXH / YFM70KPHH / YFM70KPSH / YFM70KPAH) ............. 4-3
Horn switch .................................................................. 4-10IIdentification numbers ................................................. 11-1
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12-2
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
UB1661E0.book Page 2 Thursday, May 12, 2016 2:47 PM