6-2
6
NOTICEECB00826To avoid possible damage, do not operate the
ATV if a warning light does not work as de-
scribed above. 2. Apply the brake pedal, then shift the drive se-lect 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.
3. Apply the rear brake lever or brake pedal.
4. Release the throttle lever, then push the start switch to crank the engine with the starter.
Release the start switch when the engine has
started.TIPIf the engine fails to start, release the start switch.
Wait a few seconds before the next cranking at-
tempt to allow battery voltage to restore. Do not
crank the engine more than 10 seconds on any
single attempt.
NOTICEECB00164For maximum engine life, never accelerate
hard when the engine is cold! EBU36230Operating the drive select lever and
driving in reverseNOTICEECB03330Do not shift without coming to a complete stop
and waiting for the engine to return to normal
idle speed. Damage to the engine or drivetrain
may occur. Shifting: Neutral to High-range and High-range
to Low-range1. Bring the ATV to a complete stop.
2. Apply the brake pedal, and then shift by mov- ing the drive select lever along the shift guide.TIPMake sure that the drive select lever is completely
shifted into position.
UB5K60E0.book Page 2 Monday, May 28, 2018 11:35 AM
6-4
6
TIPWhen in reverse, the reverse indicator light
should come on. If the indicator light does not
come on, have a Yamaha dealer check the elec-
trical circuit.
Due to the synchronizing mechanism in the en-
gine, the indicator light may not come on until
the ATV starts moving. 4. Check behind for people or obstacles, and
then release the brake pedal.
5. Open the throttle lever gradually and continue to watch to the rear while backing.EBU36861Engine break-inThere is never a more important period in the life
of your engine than the first 240 km (150 mi) or 20
hours of operation. For this reason, you should fol-
low the engine break-in instructions carefully.
Since the engine is brand new, do not put an ex-
cessive load on it for the first 240 km (150 mi) or
20 hours. During this period the various parts in
the engine wear and polish themselves to the cor-
rect operating clearances. Avoid prolonged full-
throttle operation or any condition that might re-
sult in engine overheating. 0–120 km (0–75 mi) or 0–10 hours
Avoid prolonged operation above 1/2 throttle.
Vary the speed of the ATV regularly. Do not oper-
ate it at one set throttle position.
120–240 km (75–150 mi) or 10–20 hours
Avoid prolonged operation above 3/4 throttle. Rev
the engine freely, but do not use full throttle at any
time.
240 km (150 mi) or 20 hours and beyond
The ATV can now be operated normally.
NOTICEECB00221If any engine trouble should occur during the
engine break-in period, immediately have a
Yamaha dealer check the ATV. EBU27322ParkingWhen parking the ATV, stop the engine, and shift
the drive select lever into the park position.
UB5K60E0.book Page 4 Monday, May 28, 2018 11:35 AM
8-18
8To check the spark plug
1. Check that the porcelain insulator around the center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the vehi-
cle is ridden normally).
TIPIf the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the vehicle.
2. Check the spark plug for electrode erosionand excessive carbon or other deposits, and
replace it if necessary.
3. Measure the spark plug gap with a wire thick- ness gauge and, if necessary, adjust the gap
to specification.
1. Spark plug wrench
1
Specified spark plug:NGK/CPR7EA-91. Spark plug gapSpark plug gap:0.8–0.9 mm (0.031–0.035 in)
UB5K60E0.book Page 18 Monday, May 28, 2018 11:35 AM
8-40
83. Tap the tailpipe lightly, and then use a wire
brush to remove any carbon deposits from
the spark arrester portion of the tailpipe and
inside of the tailpipe housing.
4. Check the gasket for damage. Replace if nec- essary.
5. Install the gasket onto the tailpipe, then insert the tailpipe into the muffler and align the bolt
holes.
6. Install the bolts and tighten to the specified torque.
EBU23932V-belt case drain plugAfter riding in water deep enough to allow it to en-
ter the V-belt case, remove the V-belt case drain
plug to drain the water from the case.TIPIf water drains from the V-belt case after removing
the plug, have a Yamaha dealer check the ATV as
the water may affect other engine parts. Tightening torque:Tailpipe bolt:10 N·m (1.0 kgf·m, 7.4 lb·ft)
1. V-belt case drain plug
1
UB5K60E0.book Page 40 Monday, May 28, 2018 11:35 AM
8-59
8
4. Turn on the main switch and start the engine.
5. If the fuse immediately blows again, have a
Yamaha dealer check the vehicle.
EBU34223Replacing a headlight bulbIf a headlight bulb burns out, replace it with the
specified bulb as follows.
Left and right headlight bulbs1. Remove the cover at the rear of the headlight by pulling it off.
2. Remove the bulb cover by pulling it off. 3. Remove the socket by pushing it in and turn-
ing it counterclockwise.1. Cover at the rear of the headlight
1
1. Bulb cover
1. Socket
1
1
UB5K60E0.book Page 59 Monday, May 28, 2018 11:35 AM
12-1
12
INDEX
AAccessories and loading ................................................ 6-5
Accessories, DC jack ................................................... 4-29
Air filter element, cleaning ........................................... 8-36
Axle boots .................................................................... 8-47BBattery ......................................................................... 8-53
Battery voltage warning light ......................................... 4-3
Brake fluid, changing ................................................... 8-44
Brake fluid level, checking ........................................... 8-43
Brake lever free play, checking the front ..................... 8-44
Brake lever, front ......................................................... 4-19
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 ................................. 4-20
Brake pedal, checking and lubricating ........................ 8-50
Brakes .......................................................................... 8-41
Brakes, front and rear .................................................... 5-3
Brake/tail light bulb, replacing ..................................... 8-63CCables, checking and lubricating ................................ 8-48
Carrier, front ................................................................. 4-26
Carrier, rear .................................................................. 4-26
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................5-3, 8-28
Coolant temperature warning light ................................ 4-3
DDifferential gear lock, indicators (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK) ............................................................... 4-6
Differential gear oil ................................................5-3, 8-26
Drive lever 2WD/4WD (YFM70KDXK / YFM70KDHK) ............................................................ 4-17
Drive select lever ......................................................... 4-21
Drive select lever and driving in reverse ........................ 6-2EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge .................................. 8-19
Engine stop switch ...................................................... 4-13
Engine trouble warning light .......................................... 4-4
EPS warning light (for EPS model) ................................ 4-5FFinal gear oil ......................................................... 5-3, 8-24
Four-wheel drive icon (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK / YFM70KPLK) .............. 4-6
Four-wheel drive indicator light (YFM70KDXK / YFM70KDHK) .............................................................. 4-5
Four-wheel drive switch (On-Command 4WD)
(YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) ..................................... 4-15
Fuel ....................................................................... 4-22, 5-3
Fuel level warning light (YFM70KDXK / YFM70KDHK) .............................................................. 4-4
Fuel tank cap ............................................................... 4-21
UB5K60E0.book Page 1 Monday, May 28, 2018 11:35 AM
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12
Fuses, replacing ........................................................... 8-56HHandlebar switches ..................................................... 4-12
Headlight beam, adjusting ........................................... 8-62
Headlight bulb, replacing ............................................. 8-59
High beam indicator light ............................................... 4-3
High-range indicator light (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK) ............................................................... 4-2
Horn switch .................................................................. 4-14IIdentification numbers ................................................. 11-1
Indicator lights and warning lights ................................. 4-1
Instruments, lights and switches ................................... 5-7LLabel locations ............................................................... 1-1
Light switch .................................................................. 4-14
Low-range indicator light (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK) ............................................................... 4-2MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................8-5
Maintenance chart, emission control system ................ 8-3
Model label ................................................................... 11-1
Multi-function display .....................................................4-6NNeutral indicator light .....................................................4-2
OOn-Command drive switch “4WD/LOCK” (YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) ..................................... 4-16
Override switch (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK / YFM70KPLK) ............. 4-14
Owner’s Manual and tool kit .......................................... 8-2PPanels, removing and installing ..................................... 8-9
Park indicator light ......................................................... 4-3
Parking ........................................................................... 6-4
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRear brake, adjusting the lever, pedal free play .......... 8-44
Rear knuckle pivots, lubricating ................................... 8-51
Reverse indicator light ................................................... 4-2
Riding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-24
Shock absorber assemblies, adjusting the front and
rear (YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) ..................................... 4-26
Spark arrester, cleaning ............................................... 8-39
Spark plug, checking ................................................... 8-17
Specifications .............................................................. 10-1
Speed limiter ................................................................ 4-19
Stabilizer bushes, checking ......................................... 8-51
Starting the engine ......................................................... 6-1
Start switch .................................................................. 4-14
UB5K60E0.book Page 2 Monday, May 28, 2018 11:35 AM