2008 YAMAHA GRIZZLY 350 wheel

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8
EBU24962Checking the wheel hub bearings The front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smoothly,
have a Yamaha dealer check the wheel hub bear-
ings.EBU25102Lubricating the steering shaft The steering shaft must be lubricated at the inter-
vals specified in the periodic maintenance and lu-
brication chart.EBU25222Battery This model is equipped with a sealed-type (MF)
battery, which does not require any maintenance.
There is no need to check the electrolyte or to add
distilled water. Check and, if necessary, tighten the
battery lead connections.
CAUTION:ECB00620Never attempt to remove the battery cell seals,as this would permanently damage the battery.
WARNING
EWB02160Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause severe burns. Avoid contact with skin,
eyes or clothing. Always shield your eyes
when working near batteries.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
EYES: Flush with water for 15 minutes and get
prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of ig-
nition away. Ventilate when charging or using
in an enclosed space.KEEP OUT OF REACH OF CHILDREN. Recommended lubricant:
Lithium-soap-based grease

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8
EBU25324Replacing a fuse
The main fuse and the fuse box are located under
the seat. (See page 4-15.)
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off all electrical
circuits.
1. Main fuse
2. Spare main fuse
3. Fuse box
4. Accessory fuse
44
1. Headlight fuse
2. Ignition fuse
3. Auxiliary DC jack fuse (for optional auxiliary DC jack)
4. Four-wheel-drive motor fuse
5. Signaling system fuse
6. Spare fuse

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8
CAUTION:ECB00640To prevent accidental short-circuiting, turn off
the main switch when checking or replacing afuse.
2. Remove the blown fuse, and then install a
new fuse of the specified amperage.
WARNING
EWB02171Always use a fuse of the specified rating, and
never use a substitute object in place of the
proper fuse. An improper fuse or a substitute
object can cause damage to the electrical sys-tem, which could lead to a fire.
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.EBU28160Headlight bulb If the headlight bulb burns out, have a Yamaha
dealer replace it.EBU28170Headlight beam If a headlight beam adjustment is necessary, have
a Yamaha dealer perform it.EBU25580Replacing the tail/brake light bulb If the tail/brake light bulb burns out, have a
Yamaha dealer replace it. Specified fuses:
Main fuse:
30.0 A
Headlight fuse:
15.0 A
Ignition fuse:
15.0 A
Four-wheel-drive motor fuse:
YFM350FWA 3.0 A
Signaling system fuse:
10.0 A
Auxiliary DC jack fuse:
10.0 A
Accessory fuse:
7.5 A

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8
EBU28030Replacing a turn signal light bulb 1. Remove the turn signal light lens by removing
the screw.
2. Remove the defective bulb by pushing it in
and turning it counterclockwise.
3. Insert a new bulb into the socket, push it in,
and then turn it clockwise until it stops.
4. Install the lens by installing the screw.CAUTION:ECB00870Do not overtighten the screw, otherwise thelens may break.
EBU28020Auxiliary light bulb If the auxiliary light bulb burns out, have a Yamaha
dealer replace it.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.
1. Screw
1
1. Wheel nut

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8
EBU25701Installing a wheel 1. Place the ATV on a level surface.
2. Install the wheel and the nuts.NOTE:
The arrow mark on the tire must point toward
the rotating direction of the wheel.
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. Tapered nutTightening torques:
Front wheel nut:
55 Nm (5.5 m·kgf, 40 ft·lbf)
Rear wheel nut:
55 Nm (5.5 m·kgf, 40 ft·lbf)

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EBU25860
CLEANING AND STORAGE
EBU25880Cleaning Frequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.
1. Before cleaning the ATV:
a. Block off the end of the exhaust pipe to
prevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler caps
are properly installed.
2. If the engine case is excessively greasy, apply
degreaser with a paint brush. Do not apply de-
greaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the job.CAUTION:ECB00710Excessive water pressure may cause water
seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical de-
vices. Many expensive repair bills have result-ed from improper high-pressure detergent
applications such as those available in coin-
operated car washers.
4. Once most of the dirt has been hosed off,
wash all surfaces with warm water and mild,
detergent-type soap. An old toothbrush or bot-
tle brush is handy for hard-to-reach places.
5. Rinse the ATV off immediately with clean wa-
ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
7. Automotive type wax may be applied to all
painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.

9-3
9c. Install the spark plug cap onto the spark
plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during
the next step.)
d. Turn the engine over several times with the
starter. (This will coat the cylinder wall with
oil.)
e. Remove the spark plug cap from the spark
plug, and then install the spark plug and
the spark plug cap.
6. Lubricate all control cables and the pivoting
points of all levers and pedals.
7. Check and, if necessary, correct the tire air
pressure, and then block up the ATV so that
all of its wheels are off the ground. Alternative-
ly, turn the wheels a little every month in order
to prevent the tires from becoming degraded
in one spot.
8. Cover the muffler outlet with a plastic bag to
prevent moisture from entering it.
9. Remove the battery and fully charge it. Store
it in a cool, dry place and charge it once a
month. Do not store the battery in an exces-
sively cold or warm place [less than 0 °C (30°F) or more than 30 °C (90 °F)]. For more in-
formation on storing the battery, see page
8-34.
NOTE:Make any necessary repairs before storing theATV.

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EBU25960
SPECIFICATIONS
Dimensions:Overall length:
1940 mm (76.4 in)
Overall width:
1085 mm (42.7 in)
Overall height:
1120 mm (44.1 in)
Seat height:
827 mm (32.6 in)
Wheelbase:
1250 mm (49.2 in)
Ground clearance:
180 mm (7.1 in)
Minimum turning radius:
3000 mm (118 in)Weight:With oil and fuel:
YFM350A 250.0 kg (551 lb)
YFM350FWA 265.0 kg (584 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
348.0 cm³
Bore × stroke:
83.0 × 64.5 mm (3.27 × 2.54 in)Compression ratio:
9.20 :1
Starting system:
Electric and recoil starter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 5W-30 or SAE 10W-30 or SAE 10W-40 or SAE
15W-40 or SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO standard MA-20 -10 0
1020 304050 ˚C
SAE 15W-40
SAE 20W-40SAE 20W-50
SAE 10W-40
SAE 5W-30
SAE 10W-30