Page 42 of 180

4-10
4
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.EBU34120Light 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 center headlight
(YFM70KPXG / YFM70KPHG / YFM70KPSG),
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 8-54.) EBU18171Horn switch “ ”
Press the switch to sound the horn.
EBU18192Override switch “OVERRIDE” (YFM70KPSG)
Top speed is normally limited when operating in
differential gear lock. If conditions require more
engine power when riding forward, push and hold
this switch to override the differential gear lock
speed limiting function. (See page 4-12.) Releas-
ing the switch restores the speed limiting function.
While the override switch is pushed, the segments
of the speedometer digits will appear as shown in
the figure.1. Override switch “OVERRIDE”
1
UB1660E0.book Page 10 Thursday, February 26, 2015 4:01 PM
Page 51 of 180
4-19
4
EBU18757FuelMake sure there is sufficient gasoline in the tank.
WARNING
EWB02522Gasoline and gasoline vapors are extremely
flammable. To avoid fires and explosions and
to reduce the risk of injury when refueling, fol-
low these instructions. 1. Before refueling, turn off the engine and besure that no one is sitting on the vehicle. Nev-
er refuel while smoking, or while in the vicinity of 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.1. Fuel tank cap
1
1. Fuel tank filler tube
2. Maximum fuel level
2
1
UB1660E0.book Page 19 Thursday, February 26, 2015 4:01 PM
Page 57 of 180
4-25
4
Trailer towing equipment can be obtained at a
Yamaha dealer. (See page 6-7 for precaution in- formation.)
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.1. Trailer hitch receiver
1
1. Auxiliary DC jack cap
2. Auxiliary DC jackMaximum rated capacity for the auxiliary DC
jack:DC 12 V, 10 A (120 W)
21
UB1660E0.book Page 25 Thursday, February 26, 2015 4:01 PM
Page 58 of 180
4-26
4
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. UB1660E0.book Page 26 Thursday, February 26, 2015 4:01 PM
Page 60 of 180

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
Page 65 of 180
5-7
5
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.UB1660E0.book Page 7 Thursday, February 26, 2015 4:01 PM
Page 66 of 180

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
Page 104 of 180
8-8
8
EBU28392TIPSome maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or
muddy areas, or at full-throttle.
Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.23 *Moving parts and
cables • Lubricate.
√√√√
24 *Drive select lever
safety system cable • Check operation and adjust or replace if neces-
sary. √√√
25 *Throttle lever • Check operation.
• Check throttle lever free play, and adjust if neces-
sary.
• Lubricate cable and lever housing. √√√√√
26 *Front and rear
brake switches • Check operation and correct if necessary.
√√√√√
27 *Lights and switches • Check operation and correct if necessary.
• Adjust headlight beams.
√√√√√
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 320UB1660E0.book Page 8 Thursday, February 26, 2015 4:01 PM