2011 YAMAHA GRIZZLY 250 Owners Manual

8-42
8 posed to electrolyte or gas expelled from
the battery, the frame could suffer struc-
tural and external damages.
[ECB00611]
6. Install the battery cover.
EBU25243Replacing the fuse The fuse holder is located under the seat. (See
page 4-11.)
If the fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off all electrical
circuits.NOTICEECB00640To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.
1. Battery
2. Battery breather hose
3. Hose clamp
4. Breather hose end
4
1
23
1. Fuse
2. Spare fuse
U1P066E0.book Page 42 Thursday, August 5, 2010 4:15 PM

8-43
82. Remove the blown fuse, and then install a
new fuse of the specified amperage.
WARNING! Always use a fuse of the spec-
ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02172]
3. Turn the key to “ON” and turn on the electrical
circuits to check if the devices operate.
4. If the fuse immediately blows again, have a
Yamaha dealer check the electrical system.EBU25481Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.
1. Remove the cover at the rear of the headlight
by pulling it off.2. Remove the headlight bulb holder cover by
pulling it off. Specified fuse:
20.0 A
1. Cover at the rear of the headlight
1. Headlight bulb holder cover
U1P066E0.book Page 43 Thursday, August 5, 2010 4:15 PM

8-44
8 3. Remove the headlight bulb holder by pushing
it in and turning it counterclockwise.
4. Remove the burnt-out bulb by pulling it out.
5. Insert a new headlight bulb into the bulb hold-
er by pushing it in. NOTICE: Do not touch
the glass part of the headlight bulb to keep
it free from oil, otherwise the transparency
of the glass, the luminosity of the bulb, and
the bulb life will be adversely affected.
Thoroughly clean off any dirt and finger-
prints on the headlight bulb using a cloth
moistened with alcohol or thinner.
[ECB00651]
6. Install the bulb holder by pushing it in and turn-
ing it clockwise.
7. Install the bulb holder cover and the cover at
the rear of the headlight. NOTICE: Make sure
the headlight bulb holder cover is securely
fitted over the bulb holder and seated
properly.
[ECB00671]
8. Adjust the headlight beam if necessary.
1. Headlight bulb holder
1. Do not touch the glass part of the bulb.
U1P066E0.book Page 44 Thursday, August 5, 2010 4:15 PM

8-45
8
EBU25551Adjusting a headlight beam NOTICEECB00690It 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).
EBU25611Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as
follows.
1. Remove the bulb holder (together with the
bulb) by turning it counterclockwise.
2. Remove the burnt-out bulb by pushing it in
and turning it counterclockwise.
1. Headlight beam adjusting screw
1. Tail/brake light bulb holder
U1P066E0.book Page 45 Thursday, August 5, 2010 4:15 PM

8-46
8 3. 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.
EBU25651Removing a wheel 1. Place 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.
EBU25701Installing a wheel 1. Place the ATV on a level surface.
2. Install the wheel and the nuts.TIP
The arrow mark on the tire must point toward
the rotating direction of the wheel.
1. Tail/brake light bulb holder
2. Tail/brake light bulb
1. Wheel nut
U1P066E0.book Page 46 Thursday, August 5, 2010 4:15 PM

8-47
8

Tapered nuts are used for both the front and rear
wheels. Install the nuts with their tapered side to-
wards the wheel.
3. Lower the ATV to the ground.
4. Tighten the wheel nuts to the specified
torques.
1. Arrow mark
1
1. Tapered nutTightening torques:
Fro nt wh ee l nu t:
55 Nm (5.5 m·kgf, 40 ft·lbf)
Rear wheel nut:
55 Nm (5.5 m·kgf, 40 ft·lbf)
U1P066E0.book Page 47 Thursday, August 5, 2010 4:15 PM

8-48
8
EBU25720Troubleshooting Although Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the fu-
el, compression, or ignition systems, for example,
can cause poor starting and loss of power.
The following troubleshooting chart represents a
quick and easy procedure for checking these vital
systems yourself. However, should your ATV re-
quire any repair, take it to a Yamaha dealer, whose
skilled technicians have the necessary tools, expe-
rience, 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
EWB02280Do 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-
lot lights from water heaters or furnaces.U1P066E0.book Page 48 Thursday, August 5, 2010 4:15 PM

8-49
8
EBU25791Troubleshooting chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
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.
Have a Yamaha dealer
check the ATV.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the electrolyte level, recharge the
battery and check the lead connections.
DryWet
Open the throttle halfway and operate
the electric starter.
U1P066E0.book Page 49 Thursday, August 5, 2010 4:15 PM