2018 YAMAHA WOLVERINE engine

4-4
4
When the On–Command drive knob is set
to “DIFF LOCK” or “4WD”, the drivetrain
icon will flash until the differential has
locked or unlocked. Turn the steering wheel
back and forth or drive slowly to help the
differential gear lock to engage or disen-
gage. EBU31333Coolant temperature warning light “ ”
This light comes on to warn that the coolant
temperature is too hot. If the light comes on
during operation, stop the vehicle as soon as
it is safe to do so and allow the engine to cool
down for about 10 minutes. (See page 8-60.)TIPIf you continue to drive the vehicle while the
engine is overheating, a buzzer will sound. NOTICEECB03460Continuous use while this warning light is
on will damage the engine.
The electrical circuit of the warning light can
be checked by turning the key to “ ” (on). If
the warning light does not come on initially
when the key is turned to “ ” (on), or if the
warning light remains on, have a Yamaha
dealer check the electrical circuit.EBU31341Engine trouble warning light “ ”
This warning light comes on or flashes if a
problem is detected in the electrical circuit
monitoring the engine. When this occurs, the
display will indicate an error code (see page
4-10). Have a Yamaha dealer check the self-
diagnosis system.
The electrical circuit of the warning light can
be checked by turning the key to “ ” (on). If
the warning light does not come on initially
when the key is turned to “ ” (on), or if the
warning light remains on, have a Yamaha
dealer check the vehicle.
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4-5
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EBU33041Electric Power Steering warning light
“EPS”
This warning light comes on when the key is
turned to “ ” (on), and then goes off once
the engine is started. If the warning light re-
mains on or comes on after the engine is
started, the EPS system may not be working
correctly. When this occurs, have a Yamaha
dealer check the EPS system.
The electrical circuit of the warning light can
be checked by turning the key to “ ” (on). If
the warning light does not come on, have a
Yamaha dealer check the electrical circuit.TIPIf the steering load is too heavy (e.g., exces-
sive steering use at slow speed or when op-
erating in deep mud, sand, or snow), the
power assist is reduced to protect the EPS
motor from overheating.
EBU31360Helmet indicator light “ ”
The indicator light comes on and stays on
while the key is turned to “ ” (on) to remind
the occupants to always wear a helmet. If the
indicator light does not come on when the key
is turned to “ ” (on), have a Yamaha dealer
check the electrical circuit.EBU31370Seat belt indicator light “ ”
The indicator light comes on when the key is
turned to “ ” (on) to remind the occupants
to fasten their seat belt. The indicator light
stays on until the driver seat belt is properly
latched. If the indicator light does not come
on when the key is turned to “ ” (on), or if
the indicator light remains on after the driver
seat belt is properly latched, have a Yamaha
dealer check the electrical circuit.
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4-10
4
(empty) as the fuel level decreases. When the
“E” segment disappears and the “ ” icon
flashes, refuel as soon as possible.TIPIf the electrical circuit for the fuel gauge is not
working correctly, all display segments
and “ ” will flash repeatedly. Have a Yamaha
dealer check the vehicle. Error code display This model is equipped with a self-diagnosis
device for various electrical circuits.
If a problem is detected in any of those cir-
cuits, the engine trouble warning light will
come on or flash, and the display will indicate
an error code.
If the display indicates an error code, note the
code number and have a Yamaha dealer
check the vehicle.
NOTICEECB00812If the multi-function display indicates an
error code, the vehicle should be checked
as soon as possible in order to avoid en-
gine damage.
1. Error code display
2. Engine trouble warning light “ ”
2
1
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4-11
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EBU31391Light switch “ / / ”Set the switch to “ ” to turn on the low
beam and the taillights.
Set the switch to “ ” to turn on the high
beam and the taillights.
Set the switch to “ ” to turn off the head-
lights and taillights.NOTICEECB02061Do not use the headlights with the engine
turned off for an extended period of time.
The battery may discharge to the pointthat the electric starter will not have
enough power to crank the engine. If this
should happen, remove the battery and re-
charge it.
EBU31402On–Command drive knob
“2WD/4WD/DIFF LOCK”Stop the vehicle and move the On–Command
drive knob to change the drive mode to two–
wheel drive, four–wheel drive, or four–wheel
1. Light switch “ / / ”
L
H
1
L
HLH
1. On-Command drive knob “2WD/4WD/DIFF LOCK”
1
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4-17
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4. Install the bolts.
5. Tighten to the specified torque.
6. Install the cushion.EBU33472Seat beltsThis vehicle is equipped with three-point seat
belts for the driver and passenger.Always wear the seat belts properly while rid-
ing in the vehicle. (See page 7-5.)
TIP
If the vehicle is driven without the driver
seat belt fastened, a buzzer will sound.
 If the vehicle is driven without the driver
seat belt fastened, engine power will be lim-
ited.
Tightening torque:
Driver seat bolt:23 N·m (2.3 kgf·m, 17 lb·ft)
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4-33
4
This vehicle is equipped with a trailer hitch
bracket and a 2" (5 cm) receiver for a stan-
dard trailer hitch. Trailer towing equipment
can be obtained at a Yamaha dealer. See
page 6-7 for loading information.EBU32952Auxiliary DC jack
This model has an auxiliary DC jack in the
dashboard. A 12-V accessory with the proper
plug, such as a radio or smartphone charger,
can be used when the engine is running and
the headlights are off.
1. Start the engine. (See page 6-2.)
2. Turn the headlights off. (See page 4-11.)
3. Open the auxiliary DC jack cap.
4. Turn the accessory off.
5. Insert the accessory power plug.
6. Turn the accessory on.TIP When inserting or removing the accessory
power plug, turn the accessory off.
 When the auxiliary DC jack is not being
used, cover it with the cap.
1. Auxiliary DC jack cap
2. Auxiliary DC jack
21
Auxiliary DC jack maximum capacity:
10 A (120 W)
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5-1
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EBU31574
FOR YOUR SAFETY – PRE-OPERATION CHECKS
EBU31584Before starting off, inspect the vehicle to make sure it is in safe operating condition. Use the fol-
lowing checklist and related information as a guide. Also, follow the service intervals in the peri-
odic maintenance chart to keep the vehicle in safe operating condition.
WARNING
EWB00482Failure to inspect or maintain the vehicle properly increases the possibility of an accident
or equipment damage. Do not operate the vehicle if you find any problem. If a problem can-
not be corrected by the procedures provided in this manual, have the vehicle inspected by
a Yamaha dealer. Pre-operation checklist
ITEM ROUTINE PAGE
Brakes • Check operation, free play, fluid level, and fluid leakage.
• Fill with DOT 4 brake fluid if necessary. 5-3, 8-39, 8-42
Parking brake • Check for proper operation. 8-42
Fuel • Check fuel level.
• Fill with the recommended fuel if necessary. 5-3
Engine oil • Check oil level.
• Fill with oil to proper level if necessary. 5-5, 8-14
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5-4
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WARNING
EWB02522Gasoline and gasoline vapors are ex-
tremely flammable. To avoid fires and ex-
plosions and to reduce the risk of injury
when refueling, follow these instructions. 1. Before refueling, turn off the engine andbe sure that no one is sitting in the vehi-
cle.
Never refuel while smoking, or while in
the vicinity of sparks, open flames, or
other sources of ignition such as the pilot
lights of water heaters and clothes dry-
ers.
2. Do not overfill the fuel tank. 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.
4. Be sure the fuel tank cap is closed se-
curely.
WARNING
EWB02532Gasoline is poisonous and can cause inju-
ry 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 immediately.
If gasoline spills on your skin, wash with
soap and water. If gasoline spills on your
clothing, change your clothes. Your Yamaha engine has been designed to
use regular unleaded gasoline with a research
octane number of 91 or higher (95 or higher
for Europe). If knocking or pinging occurs,
use a different brand of gasoline or premium
unleaded gasoline. Unleaded fuel will give
you longer spark plug life and reduced main-
tenance cost.
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