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8
7. Install the bulb cover and the cover at the rear
of the headlight. NOTICE: Make sure the
bulb cover is securely fitted over the sock-
et and seated properly.
[ECB03320]
8. Adjust the headlight beam if necessary.
Handlebar-mounted light bulb (YFM45KPXK /
YFM45KPHK / YFM45KPLK) 1. Remove the handlebar-mounted light cover by removing the quick fasteners.
2. Remove the bulb cover by pulling it off. 3. Remove the socket by pushing it in and turn-
ing it counterclockwise.1. Handlebar-mounted light cover
2. Quick fastener
1
2
2
1. Bulb cover
1. Socket
1
1
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8-61
84. Remove the burnt-out bulb.
5. Place a new bulb into position.
NOTICE: Do
not touch the glass part of the bulb. Oil
from your fingers or other contamination
will adversely affect the transparency of
the glass, luminosity of the bulb, and bulb
life. Thoroughly clean off any dirt and fin-
gerprints using a cloth moistened with al-
cohol or thinner.
[ECB00653]
6. Install the socket by pushing it in and turning it clockwise.
7. Install the bulb cover. NOTICE: Make sure
the bulb cover is securely fitted over the
socket and seated properly.
[ECB03320]
8. Install the handlebar-mounted light cover as shown, and then install the quick fasteners.
9. Adjust the handlebar-mounted light beam if necessary.EBU25553Adjusting a headlight beamNOTICEECB00691It is advisable to have a Yamaha dealer make
this adjustment. To raise a headlight beam, turn the headlight
beam adjusting screw in direction (a).
To lower a headlight beam, turn the adjusting
screw in direction (b).
1. Do not touch the glass part of the bulb.
1
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8-62
8
YFM45KPXK / YFM45KPHK / YFM45KPLK
EBU25615Replacing the brake/tail light bulbIf the brake/tail light bulb burns out, replace it as
follows.
1. Remove the brake/tail light bulb holder (to- gether with the bulb) by turning it counter-
clockwise.
2. Remove the burnt-out bulb by pushing it in and turning it counterclockwise.
1. Headlight beam adjusting screw
1. Handlebar-mounted light beam adjusting screw
(a)
(b)
1
1
(a)
(b)
1. Brake/tail light bulb holder
1
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8-63
83. Insert a new bulb into the bulb holder, push it
in, and then turn it clockwise until it stops.
4. Install the bulb holder (together with the bulb) by turning it clockwise.
EBU25653Removing a wheel1. Park the ATV on a level surface.
2. Loosen the wheel nuts. 3. Elevate the ATV and place a suitable stand
under the frame.
4. Remove the nuts from the wheel.
5. Remove the wheel.
EBU36243Installing a wheel1. Install the wheel with the arrow mark pointing in the forward rotating direction of the wheel,
and then install the wheel nuts.
1. Brake/tail light bulb
1
1. Wheel nut
1
1
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8-64
8
TIPFor YFM45KDXK / YFM45KDHK / YFM45KPXK /
YFM45KPHK: be sure to install the nuts with their
tapered side towards the wheel.
2. Lower the ATV to the ground.
3. Tighten the wheel nuts to the specifiedtorques.
1. Arrow mark
2. Forward rotating direction
3. Wheel nut
1
2
3
1. Tapered nutTightening torques:Front wheel nut:55 N·m (5.5 kgf·m, 41 lb·ft)
Rear wheel nut: 55 N·m (5.5 kgf·m, 41 lb·ft)1
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8
EBU25741TroubleshootingAlthough Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the
fuel, compression, or ignition systems, for exam-
ple, can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vi-
tal systems yourself. However, should your ATV
require any repair, take it to a Yamaha dealer,
whose skilled technicians have the necessary
tools, experience, and know-how to service the
ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02281Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
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8
EBU27696Troubleshooting chartsStarting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Operate the electric starter.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the ATV.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug. Have a Yamaha dealer check the ATV.
The engine does not start.
Check the compression.
DryWet
Operate the electric starter.
Have a Yamaha dealer check the ATV.
The engine does not start.
Check the ignition.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
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8-67
8Engine overheating
WARNING
EWB02291Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. TIP
Tap water can be used in an emergency. Change to the recommended coolant as soon as possible.
The engine will tend to overheat if the radiator is caked with mud, or if the ATV is overloaded. Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
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