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4-10
4YFM70KPSH
EBU18081Engine stop switch “ / ”
Set this switch to “ ” before starting the engine.
The engine stop switch controls the ignition and
stops the engine when it is running. Use this
switch to stop the engine in an emergency situa-
tion. The engine will not start or run when this
switch is set to “ ”.
EBU18102Start switch “ ”
Push this switch to crank the engine with the start-
er. See the starting instructions on page 6-1 prior
to starting the engine.EBU34121Light switch “ / /OFF”
Set this switch to “ ” to turn on the left and right
headlights (low beams) and the taillight. Set the
switch to “ ” to turn on the left and right head-
lights (high beams), the handlebar-mounted light
(YFM70KPXH / YFM70KPHH / YFM70KPSH /
YFM70KPAH), and the taillight. Set the switch to
“OFF” to turn off all the lights.NOTICEECB00044Do not use the headlights with the engine
turned off for an extended period of time, oth-
erwise the battery may discharge to the point
that the starter motor will not operate properly.
If this should happen, remove the battery and
recharge it. (See page 8-53.) EBU18171Horn switch “ ”
Press the switch to sound the horn.
1. Light switch “ / /OFF”
2. Start switch “ ”
3. Engine stop switch “ / ”
4. Override switch “OVERRIDE”
5. Horn switch “ ”
41325
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4-14
4To lock the differential gear in four-wheel drive,
make sure the On-Command four-wheel-drive
switch is pushed in to the “4WD” position. Stop the ATV, move the differential gear lock lever
to position (a), and then push the differential gear
lock switch in to the “LOCK” position. When the
differential gear is locked, the differential gear lock
indicator light “DIFF. LOCK” will come on along
with the indicator “ ” in the multi-function dis-
play.
1. On-Command four-wheel-drive switch “2WD”/“4WD”
2. On-Command differential gear lock switch
“4WD”/“LOCK”
2WD
4WD
1
2
1. Differential gear lock lever
2. On-Command four-wheel-drive switch “2WD”/“4WD”
2WD
4WD
2
1
(a)
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4-15
4
To unlock the differential gear, stop the ATV and
push the switch to the “4WD” position.
TIP When the switch is set to “LOCK” or “4WD”, the
differential gear lock indicator and indicator light
will flash until the differential gear is completely
locked or unlocked.
When the indicator and indicator light are flash-
ing, turning the handlebar back and forth will
help the differential gear lock to engage or dis-
engage.
Riding before the differential gear is properly en-
gaged or disengaged (e.g., when the indicator
and indicator light are flashing) will cause the
vehicle speed to be limited until the differential
gear is completely engaged or disengaged.
When the ATV is in four-wheel-drive differential
gear lock, the maximum traveling speed is limit-
ed to 35 km/h (22 mi/h). However, if conditions
require full engine power to be available, push
and hold the override switch to disable the dif-
ferential gear lock speed limiter. (See page 4-11
for a detailed explanation of this switch.)
EBU34130Drive lever “2WD”/“4WD”
(YFM70KDXH / YFM70KPXH /
YFM70KPHH / YFM70KPAH)
WARNING
EWB00164Always stop the ATV before changing from
two-wheel drive to four-wheel drive and vice
versa. The ATV handles differently in two-
wheel drive than in four-wheel drive in some
circumstances. Changing from two-wheel
drive to four-wheel drive or vice versa while
moving may cause the ATV to unexpectedly
1. On-Command differential gear lock switch
“4WD”/“LOCK”
LOCK4WD
1
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4-16
4handle differently. This could distract the oper-
ator and increase the risk of losing control and
of causing an accident.
This vehicle is equipped with a lever to change
from two-wheel drive to four-wheel drive and vice
versa. Select the appropriate drive according to
the terrain and the conditions.
“2WD” (two-wheel drive): Power is supplied to
the rear wheels.
“4WD” (four-wheel drive): Power is supplied to
the rear and front wheels.
To change from two-wheel drive to four-wheel
drive, stop the vehicle and set the lever to the
“4WD” position. Then, the four-wheel-drive indi-
cator light “ ” (YFM70KDXH) or the four-wheel-
drive indicator “ ” (YFM70KPXH /
YFM70KPHH / YFM70KPAH) comes on.
To change from four-wheel drive to two-wheel
drive, stop the vehicle and set the lever to the
“2WD” position.
EBU18283Throttle leverOnce the engine is running, pushing the throttle le-
ver will increase the engine speed.
Regulate the speed of the ATV by varying the
throttle position. Because the throttle is spring-
loaded, the ATV will decelerate, and the engine
will return to an idle any time the throttle lever is re-
leased.1. Drive lever “2WD”/“4WD”
2. “2WD” position
3. “4WD” position
2WD
4WD
12
3
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4-20
4of sparks, open flames, or other sources of
ignition such as the pilot lights of water heat-
ers and clothes dryers.
2. Do not overfill the fuel tank. When refueling, be sure to insert the pump nozzle into the fuel
tank filler hole. Stop filling when the fuel
reaches the bottom of the filler tube. Because
fuel expands when it heats up, heat from the
engine or the sun can cause fuel to spill out of
the fuel tank.
3. Wipe up any spilled fuel immediately.NOTICE: Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since fuel may
deteriorate painted surfaces or plastic
parts.
[ECB00982]
4. Turn the fuel tank cap fully clockwise to make sure it is securely closed.
WARNING
EWB02532Gasoline is poisonous and can cause injury or
death. Handle gasoline with care. Never siphon
gasoline by mouth. If you should swallow some
gasoline or inhale a lot of gasoline vapor, or get
some gasoline in your eyes, see your doctor
1. Fuel tank filler tube
2. Maximum fuel level
2
1
Recommended fuel:Regular unleaded gasoline only
For Europe: Regular unleaded gasoline only
with a research octane number of 95 or
higher
Fuel tank capacity: 18.0 L (4.75 US gal, 3.96 Imp.gal)
Fuel reserve amount: 4.0 L (1.06 US gal, 0.88 Imp.gal)
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4-26
4
EBU19184Auxiliary DC jackThe auxiliary DC jack is located at the front right
side of the ATV. The auxiliary DC jack can be used
for suitable work lights, radios, etc. The auxiliary
DC jack should only be used when the engine is
running and the light switch is set to “OFF”.1. Set the light switch to “OFF”.
2. Turn the accessory off.
3. Start the engine. (See page 6-1.)
4. Open the auxiliary DC jack cap, and then in- sert the accessory power plug into the jack. 5. Turn the accessory on.
6. When the auxiliary DC jack is not being used,
cover it with the cap.
NOTICEECB00121Do not use accessories requiring more than
the above maximum capacity. This may
overload the circuit and cause the fuse to
blow.
If accessories are used without the engine
running or with the headlights turned on, the
battery will lose its charge and engine start-
ing may become difficult.
Do not use an automotive cigarette lighter or
other accessories with a plug that gets hot
because the jack can be damaged.
1. Auxiliary DC jack cap
2. Auxiliary DC jack
21
Maximum rated capacity for the auxiliary DC
jack:
DC 12 V, 10 A (120 W)
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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, 8-42, 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, 8-42, 8-45
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, 8-41
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. 8-50
Brake levers • Make sure that operation is smooth. Lubricate lever pivoting points
if necessary. 8-49
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 PAGEUB1661E0.book Page 2 Thursday, May 12, 2016 2:47 PM
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5-7
5
Aftermarket tires and rims
The tires and rims that came with your ATV were
designed to match the performance capabilities
and to provide the best combination of handling,
braking, and comfort. Other tires, rims, sizes, and
combinations may not be appropriate.
EBU19841Chassis fastenersMake sure that all nuts, bolts and screws are
properly tightened.EBU19851Instruments, lights and switchesCheck that all instruments, lights and switches are
working properly. Correct if necessary.UB1661E0.book Page 7 Thursday, May 12, 2016 2:47 PM