2008 YAMAHA GRIZZLY 350 brake fluid

Checking the front brake pads and
rear brake shoes .................................... 8-26
Checking the brake fluid level .................. 8-27
Changing the brake fluid .......................... 8-28
Checking the front brake lever free
play ......................................................... 8-29
Checking the rear brake lever and
brake pedal free play and the brake
pedal position ......................................... 8-29
Axle boots ................................................ 8-31
Brake light switches ................................. 8-31
Checking and lubricating the cables ........ 8-32
Checking and lubricating the front and
rear brake levers .................................... 8-32
Checking and lubricating the brake
pedal ...................................................... 8-33
Checking the wheel hub bearings ............ 8-34
Lubricating the steering shaft ................... 8-34
Battery ...................................................... 8-34
Replacing a fuse ...................................... 8-36
Headlight bulb .......................................... 8-37
Headlight beam ........................................ 8-37
Replacing the tail/brake light bulb ............ 8-37
Replacing a turn signal light bulb ............. 8-38
Auxiliary light bulb .................................... 8-38
Removing a wheel .................................... 8-38
Installing a wheel ...................................... 8-39Troubleshooting ........................................8-40
Troubleshooting chart ...............................8-41
CLEANING AND STORAGE ..........................9-1
Cleaning ......................................................9-1
Storage .......................................................9-2
SPECIFICATIONS .......................................10-1
CONSUMER INFORMATION.......................11-1
Identification numbers ...............................11-1

5-2
5
Hydraulic brake systemCheck 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 reservoirs, and add recommended brake
fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary.5-3, 8-26, 8-27, 8-29
Rear brakeCheck operation, and correct if necessary.
Lubricate cables if necessary.
Check lever and pedal free play, and adjust if necessary.5-3, 8-26, 8-29
Throttle leverMake sure that operation is smooth. Lubricate cable and lever hous-
ing if necessary.
Check cable free play, and adjust if necessary.5-4, 8-25
Control cablesMake sure that operation is smooth. Lubricate if necessary. 8-32
Wheels and tiresCheck wheel condition, and replace if damaged.
Check tire condition and tread depth. Replace if necessary.
Check air pressure. Correct if necessary.5-4, 5-5, 5-6
Brake pedal Make sure that operation is smooth. Lubricate pedal pivoting point if
necessary.8-33
Brake leversMake sure that operation is smooth. Lubricate lever pivoting points if
necessary.8-32
Axle bootsCheck for cracks or damage, and replace if necessary. 8-31
Chassis fastenersMake sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments, lights and
switchesCheck operation, and correct if necessary. 5-7 ITEM ROUTINE PAGE

5-3
5
EBU19540Fuel Make sure that there is sufficient fuel in the tank.
(See page 4-11.)
WARNING
EWB00520
Do not overfill the fuel tank. Fuel expands
when it heats up. If the fuel tank is overfilled,
fuel could spill out due to heat from the en-
gine or the sun.
Be careful not to spill fuel, especially on the
engine or exhaust pipe which can cause a
fire and severe injury. Wipe up any spilled
fuel immediately.
Do not refuel right after the engine has been
running and is still very hot.
Be sure the fuel tank cap is closed securely.EBU19560Engine oil Make sure that the engine oil is at the specified lev-
el. Add oil as necessary. (See page 8-11.)EBU19590Final gear oil Make sure that the final gear oil is at the specified
level. Add oil as necessary. (See page 8-15.)
EBU19600Differential gear oil (4WD model)Make sure that the differential gear oil is at the
specified level. Add oil as necessary. (See page
8-18.)EBUM0061Front and rear brakes Brake levers and brake pedal
Check that there is no free play in the front brake
lever. If there is free play, have a Yamaha dealer
check the brake system.
Check for correct free play in the rear brake lever
and brake pedal. If the free play is incorrect, ad-
just it. (See page 8-29.)
Check operation of the levers and pedal. They
should move smoothly and there should be a
firm feeling when the brake is applied. If not,
have a Yamaha dealer check them.
Brake fluid level (front brake and brake equal-
izer system)
Check the brake fluid level. Add fluid if necessary.
(See page 8-27.)

5-4
5 Brake fluid leakage (front brake and brake
equalizer system)
Check to see if any brake fluid is leaking out of the
hoses, joints or brake fluid reservoirs of the front
brake and brake equalizer system. Apply the brake
firmly for one minute. If the lever moves slowly in-
ward, there may be a leak in the brake system. If
there is any leakage, the brake system should be
checked by a Yamaha dealer.
Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance, check
the brake pads and shoes for wear. (See page
8-26.)
WARNING
EWB00580Always check the brakes at the start of every
ride. Do not ride the ATV if you find any prob-
lem with the brakes or you could lose braking
ability, which could lead to an accident. If aproblem cannot be corrected by the adjust-
ment procedures provided in this manual, have
a Yamaha dealer check for the cause.EBU19761Throttle lever Check the operation of the throttle lever. It must
open smoothly and spring back to the idle position
when released. Have a Yamaha dealer correct if
necessary.EBU28080Tires
WARNING
EWB02390Use of improper tires on this ATV, or operation
of this ATV with improper or uneven tire pres-
sure, may cause loss of control, increasing
your risk of accident.
Pay attention to the following.
The tires listed below have been approved
by MBK INDUSTRIE for this model. Other tire
combinations are not recommended.
Front:
Manufacturer/model:
MAXXIS/M911Y Recommended brake fluid:
DOT 4

8-5
8
EBU21864General maintenance and lubrication chart NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320
1 Air filter elementClean and replace if necessary.Every 20–40 hours (more often in wet or
dusty areas)
2*Hydraulic brake
systemCheck operation and correct if necessary.
Check fluid level and ATV for fluid leakage, and
correct if necessary.√√√√√
Replace brake pads. Whenever worn to the limit
3*Rear brakeCheck operation and correct if necessary.
Check brake lever and pedal free play, and adjust
if necessary.√√√√√
Replace brake shoes. Whenever worn to the limit
4*Brake hosesCheck for cracks or other damage, and replace if
necessary.√√√√
Replace. Every 4 years
5*WheelsCheck runout and for damage, and replace if nec-
essary.√ √√√
6*TiresCheck tread depth and for damage, and replace if
necessary.
Check air pressure and balance, and correct if
necessary.√ √√√
7*Wheel hub bearingsCheck for looseness or damage, and replace if
necessary.√ √√√
8*SwingarmCheck for excessive play, and correct if necessary.√√√

8-7
8
EBUM0110NOTE:
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.
Every two years replace the internal components of the front brake master cylinder, equalizer master
cylinder and calipers, and change the brake fluid.
Every two years replace the piston seals and O-ring of the brake equalizer.20*Moving parts and
cablesLubricate.√√√√
21*Drive select lever
safety system cableCheck operation and adjust or replace if neces-
sary.√√√
22*Throttle lever hous-
ing and cableCheck operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.√√√√√
23*Front and rear brake
switchesCheck operation and correct if necessary.√√√√√
24*Lights and switchesCheck operation and correct if necessary.
Adjust headlight beam.√√√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320

8-27
8 shoe has worn to the point that the wear indicator
reaches the wear limit line or mark, have a
Yamaha dealer replace the brake shoes as a set.
EBU24251Checking the brake fluid level Insufficient brake fluid may allow air to enter the
brake system, possibly causing it to become inef-
fective.
Before riding, check that the brake fluid is above
the minimum level mark and replenish if neces-
sary. A low brake fluid level may indicate wornbrake pads and/or brake system leakage. If the
brake fluid level is low, be sure to check the brake
pads for wear and the brake system for leakage.
Front brake1. Wear limit line
2. Wear indicator
1. Minimum level mark

8-28
8Rear brake
Observe these precautions:

When checking the fluid level, make sure that
the top of the brake fluid reservoir is level.
Use only the recommended quality brake fluid,
otherwise the rubber seals may deteriorate,
causing leakage and poor braking performance.
Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor braking performance.

Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and may
result in vapor lock.
Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid imme-
diately.
As the brake pads wear, it is normal for the brake
fluid level to gradually go down. However, if the
brake fluid level goes down suddenly, have a
Yamaha dealer check the cause.EBUM0120Changing the brake fluid Have a Yamaha dealer change the brake fluid at
the intervals specified in the NOTE after the peri-
odic maintenance and lubrication chart. In addi-
tion, have the oil seals of the front brake master
cylinder, equalizer master cylinder and calipers as
well as the brake hoses replaced at the intervals
listed below or whenever they are damaged or
leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.
Brake equalizer piston seals and o-ring: Replace
every two years.
1. Minimum level mark
2. Maximum level markRecommended brake fluid:
DOT 4