EBU17421
TABLE OF CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS .............................. 1-1
SAFETY INFORMATION ................................ 2-1
DESCRIPTION................................................ 3-1Left view ...................................................... 3-1
Right view.................................................... 3-1
Controls and instruments............................ 3-2
INSTRUMENT AND CONTROL
FUNCTIONS ................................................... 4-1 Main switch ................................................. 4-1
Indicator lights and warning lights .............. 4-2
Multi-function display (YFM70KPXG / YFM70KPHG / YFM70KPSG) ................... 4-6
Handlebar switches .................................... 4-9
Drive lever “2WD”/“4WD” (YFM70KDXG / YFM70KDHG / YFM70KPXG /
YFM70KPHG).......................................... 4-15
Throttle lever ............................................. 4-16
Speed limiter ............................................. 4-16
Front brake lever ....................................... 4-17
Brake pedal and rear brake lever .............. 4-17 Drive select lever ...................................... 4-18
Fuel tank cap ............................................ 4-18
Fuel ........................................................... 4-19
Seat .......................................................... 4-20
Storage compartment............................... 4-21
Front carrier .............................................. 4-23
Rear carrier ............................................... 4-23
Adjusting the front and rear shock
absorber assemblies (YFM70KPXG /
YFM70KPHG / YFM70KPSG) ................. 4-23
Trailer hitch (YFM70KPXG / YFM70KPHG / YFM70KPSG) ................. 4-24
Auxiliary DC jack....................................... 4-25
PRE-OPERATION CHECKS .......................... 5-1 Fuel ............................................................. 5-3
Engine oil .................................................... 5-3
Final gear oil ............................................... 5-3
Differential gear oil ...................................... 5-3
Coolant ....................................................... 5-3
Front and rear brakes ................................. 5-3
Throttle lever ............................................... 5-4
Tires ............................................................ 5-4
Chassis fasteners ....................................... 5-7UB1660E0.book Page 1 Thursday, February 26, 2015 4:01 PM
Instruments, lights and switches ................ 5-7
OPERATION ................................................... 6-1 Starting the engine ...................................... 6-1
Operating the drive select lever and driving in reverse ....................................... 6-2
Engine break-in ........................................... 6-4
Parking ........................................................ 6-5
Parking on a slope ...................................... 6-5
Accessories and loading ............................. 6-6
RIDING YOUR ATV ........................................ 7-1 GETTING TO KNOW YOUR ATV ................ 7-2
RIDE WITH CARE AND GOOD JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............... 7-9
TURNING YOUR ATV................................ 7-12
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL .................................. 7-16
CROSSING A SLOPE................................ 7-17
CROSSING THROUGH SHALLOW WATER .................................................... 7-18
RIDING OVER ROUGH TERRAIN ............. 7-20
SLIDING AND SKIDDING .......................... 7-21
WHAT TO DO IF... ..................................... 7-22
WHAT TO DO... ......................................... 7-22 PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1
Owner’s manual and tool kit ....................... 8-2
Periodic maintenance chart for the emission control system ........................... 8-3
General maintenance and lubrication chart.......................................................... 8-5
Removing and installing panels ................ 8-10
Checking the spark plug........................... 8-18
Engine oil and oil filter cartridge ............... 8-21
Final gear oil ............................................. 8-25
Differential gear oil .................................... 8-28
Coolant ..................................................... 8-30
Cleaning the air filter element ................... 8-37
Cleaning the spark arrester ...................... 8-40
V-belt case drain plug............................... 8-41
Adjusting the throttle lever free play ......... 8-42
Valve clearance......................................... 8-42
Adjusting the drive select lever safety system cable .......................................... 8-43
Brakes....................................................... 8-43
Checking the front brake pads and rear brake friction plates ................................ 8-43
Checking the brake fluid level .................. 8-44
Changing the brake fluid .......................... 8-45
Checking the front brake lever free play... 8-45
UB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
Adjusting the rear brake lever and brake pedal free play ........................................ 8-46
Axle boots ................................................. 8-48
Brake light switches .................................. 8-49
Checking and lubricating the cables......... 8-49
Checking and lubricating the front and rear brake levers ..................................... 8-50
Checking and lubricating the brake pedal ....................................................... 8-51
Checking the wheel hub bearings............. 8-51
Checking the stabilizer bushes ................. 8-52
Lubricating the rear knuckle pivots ........... 8-52
Lubricating the steering shaft ................... 8-53
Battery....................................................... 8-54
Replacing a fuse ....................................... 8-57
Replacing a headlight bulb ....................... 8-59
Adjusting a headlight beam ...................... 8-62
Replacing the tail/brake light bulb ............ 8-63
Removing a wheel ..................................... 8-64
Installing a wheel....................................... 8-65
Troubleshooting ........................................ 8-66
Troubleshooting charts ............................. 8-67
CLEANING AND STORAGE ........................... 9-1 Cleaning ...................................................... 9-1
Storage........................................................ 9-2 SPECIFICATIONS ........................................ 10-1
CONSUMER INFORMATION....................... 11-1
Identification numbers .............................. 11-1
INDEX .......................................................... 12-1
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2-3
2technique described in this manual on level
ground. Avoid crossing the side of a steep hill if
possible.
Always use proper procedures if you stall or roll
backwards when climbing a hill. To avoid stall-
ing, use the proper gear range and maintain a
steady speed when climbing a hill. If you stall or
roll backwards, follow the special procedure for
braking described in this manual. Dismount on
the uphill side or to a side if pointed straight up-
hill. Turn the ATV around and remount, following
the procedure described in this manual.
Always check for obstacles before operating in
a new area.
Never attempt to operate over large obstacles,
such as large rocks or fallen trees. Always follow
proper procedures when operating over obsta-
cles as described in this manual.
Always be careful when skidding or sliding.
Learn to safely control skidding or sliding by
practicing at low speeds and on level, smooth
terrain. On extremely slippery surfaces, such as
ice, go slowly and be very cautious in order to
reduce the chance of skidding or sliding out of
control.
Never operate an ATV in fast flowing water or in
water deeper than that recommended in this
manual. Remember that wet brakes may have
reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several
times to let friction dry out the linings.
Always be sure there are no obstacles or people
behind you when you operate in reverse. When
it is safe to proceed in reverse, go slowly.
Always use the size and type of tires specified in
this manual.
Always maintain proper tire pressure as de-
scribed in this manual.
Never exceed the stated load capacity for an
ATV. Cargo should be properly distributed and
securely attached. Reduce speed and follow in-
structions in this manual for carrying cargo or
pulling a trailer. Allow greater distance for brak-
ing.
Do not operate your ATV during darkness un-
less it is equipped with a properly functioning
headlight. Off-road riding is inherently danger-
ous and additionally, off-road trails do not have
streetlights to guide you.
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3-1
3
EBU17681
DESCRIPTION
EBU17691Left view
EBU17701Right view
1. Radiator cap
2. Battery
3. Fuses
4. Air filter case
5. Spark arrester
6. Rear brake light switch
7. Engine oil dipstick
8. Oil filter cartridge
9. Coolant reservoir
5
1
2,3
47
8
6
9
1. Rear shock absorber assembly spring preload adjusting ring (YFM70KPXG / YFM70KPHG / YFM70KPSG)
2. Fuel tank cap
3. Owner’s tool kit
4. Storage compartment
5. Spark plug
6. Front shock absorber assembly spring preload adjusting ring (YFM70KPXG / YFM70KPHG / YFM70KPSG)
7. Brake pedal
8. V-belt case drain plug
5
1
6
23
4
78
UB1660E0.book Page 1 Thursday, February 26, 2015 4:01 PM
3-2
3
EBU17714Controls and instrumentsYFM70KDXG / YFM70KDHGYFM70KPXG / YFM70KPHG / YFM70KPSG1. Drive select lever
2. Rear brake lever
3. Handlebar switches
4. Drive lever “2WD”/“4WD”
5. Warning and indicator lights
6. Front brake fluid reservoir
7. Front brake lever
8. Throttle lever
9. Auxiliary DC jack
10.Main switch12345678910
1. Drive select lever
2. Rear brake lever
3. Handlebar switches
4. Drive lever “2WD”/“4WD” (YFM70KPXG / YFM70KPHG)
5. Multi-function display
6. Front brake fluid reservoir
7. On-Command four-wheel-drive/differential gear lock
switch (YFM70KPSG)
8. Front brake lever
9. Throttle lever
10.Auxiliary DC jack
11.Main switch123456
78 91011
UB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
5-2
5
Front brake• Check operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear, and replace if necessary.
• Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
• Check hydraulic system for leakage. Correct if necessary. 5-3, 8-43, 8-44, 8-45
Rear brake • Check operation, and correct if necessary.
• Lubricate cables if necessary.
• Check lever and pedal free play, and adjust if necessary. 5-3, 8-43, 8-46
Throttle lever • Make sure that operation is smooth. Lubricate cable and lever
housing if necessary.
• Check lever free play, and adjust if necessary. 5-4, 8-42
Control cables • Make sure that operation is smooth. Lubricate if necessary. 8-49
Wheels and tires • Check wheel condition, and replace if damaged.
• Check tire condition and tread depth. Replace if necessary.
• Check air pressure. Correct if necessary. 5-4
Brake pedal • Make sure that operation is smooth. Lubricate pedal pivoting point
if necessary. 8-51
Brake levers • Make sure that operation is smooth. Lubricate lever pivoting points
if necessary. 8-50
Axle boots • Check for cracks or damage, and replace if necessary. 8-48
Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments, lights and
switches • Check operation, and correct if necessary. 5-7
ITEM ROUTINE PAGEUB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
6-1
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. EBU34160Starting 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)
NOTICEECB00825If a warning light does not go off, see page 4-2
for the corresponding warning light circuit
check. To avoid possible damage, do not oper-
ate the ATV if a warning light stays on. 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:
UB1660E0.book Page 1 Thursday, February 26, 2015 4:01 PM