2011 YAMAHA GRIZZLY 450 belt

Starting a warm engine .............................. 6-3
Operating the drive select lever and
driving in reverse ...................................... 6-3
Engine break-in .......................................... 6-5
Parking ....................................................... 6-5
Parking on a slope ..................................... 6-6
Accessories and loading ............................ 6-6
RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV............... 7-2
RIDE WITH CARE AND GOOD
JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............. 7-9
TURNING YOUR ATV .............................. 7-12
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL.................................. 7-16
CROSSING A SLOPE............................... 7-17
CROSSING THROUGH SHALLOW
WATER ................................................... 7-18
RIDING OVER ROUGH TERRAIN ........... 7-21
SLIDING AND SKIDDING ......................... 7-21
WHAT TO DO IF... .................................... 7-23
WHAT TO DO... ........................................ 7-23
PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1
Owner’s manual and tool kit ....................... 8-2Periodic maintenance chart for
the emission control system .....................8-3
General maintenance and lubrication
chart ..........................................................8-5
Removing and installing panels ................8-10
Checking the spark plug ...........................8-14
Engine oil and oil filter cartridge ................8-17
Final gear oil .............................................8-21
Differential gear oil ....................................8-24
Coolant .....................................................8-26
Cleaning the air filter element ...................8-30
Cleaning the spark arrester ......................8-33
V-belt cooling duct check hose .................8-35
V-belt case drain plug ...............................8-35
Adjusting the carburetor ............................8-36
Adjusting the engine idling speed .............8-36
Adjusting the throttle lever free play .........8-37
Valve clearance ........................................8-38
Adjusting the drive select lever safety
system cable ...........................................8-38
Brakes .......................................................8-38
Checking the front brake pads and rear
brake friction plates .................................8-39
Checking the brake fluid level ...................8-40
Changing the brake fluid ...........................8-40
Checking the front brake lever free
play .........................................................8-41
U1CT60E0.book Page 2 Monday, May 31, 2010 10:05 AM

3-1
3
EBU17680
DESCRIPTION
EBU17690Left view
EBU17700Right view
1. Radiator cap
2. Fuel cock
3. Throttle stop screw
4. Air filter case
5. Battery
6. Fuses
7. Tail/brake light
8. Engine oil filler cap
9. Oil filter cartridge
10.Coolant reservoir
11.V-belt cooling duct check hose
1 2 3 4 5,6 7
8 9 10 11
1. Rear shock absorber assembly spring preload adjusting
ring
2. Spark arrester
3. Rear storage compartment and tool kit
4. Spark plug
5. Front shock absorber assembly spring preload adjusting
ring
6. Rear brake light switch
7. Brake pedal
8. V-belt case drain plug1
2
3
4
5
6
7
8
U1CT60E0.book Page 1 Monday, May 31, 2010 10:05 AM

7-19
7 The ATV can be used to cross slow moving, shal-
low water of up to a maximum of 35 cm (14 in) in
depth. Before entering the water, choose your path
carefully. Enter where there is no sharp drop off,
and avoid rocks or other obstacles which may be
slippery or upset the ATV. Drive slowly and care-
fully.
Test your brakes after leaving the water. If neces-
sary, apply them several times to let friction dry out
the linings. Do not continue to ride your ATV with-
out verifying that you have regained proper brakingability. WARNING! Wet brakes may have re-
duced stopping ability, which could cause loss
of control.
[EWB02621]
After riding your ATV in water, be sure to drain the
trapped water by removing the check hose at the
bottom of the air filter case, the V-belt cooling duct
check hose, the drive select lever box check hose
and the rear storage compartment check hose. Al-
so, remove the V-belt case drain plug and front
storage compartment drain plug to drain any water
that may have accumulated. NOTICE: Undrained
water can cause damage or improper opera-
tion.
[ECB00841]
U1CT60E0.book Page 19 Monday, May 31, 2010 10:05 AM

7-20
7Wash the ATV in fresh water if it has been operat-
ed in salt water or muddy conditions.
1. Air filter case check hose
1. V-belt cooling duct check hose (left front side of ATV)
1. Drive select lever box check hose
1. Storage compartment check hose
U1CT60E0.book Page 20 Monday, May 31, 2010 10:05 AM

7-21
7 RIDING OVER ROUGH TERRAIN
WARNING
EWB01651Riding improperly over obstacles could cause
loss of control or a collision. Before operating
in a new area, check for obstacles. Never at-
tempt to ride over large obstacles, such as
large rocks or fallen trees. When you go over
obstacles, always follow proper procedures as
described in the Owner’s Manual.Riding over rough terrain should be done with cau-
tion. Look out for obstacles which could cause
damage to the ATV or could lead to an upset or ac-
cident. Be sure to keep your feet firmly mounted on
the footboards at all times. Avoid jumping the ATV
as loss of control and damage to the ATV may re-
sult.
SLIDING AND SKIDDING
WARNING
EWB01662Skidding or sliding improperly may cause you
to lose control of this ATV. You may also re-
gain traction unexpectedly, which may cause
the ATV to overturn.
1. V-belt case drain plug
1. Storage compartment drain plugU1CT60E0.book Page 21 Monday, May 31, 2010 10:05 AM

8-35
8
WARNING
EWB02340Do not start the engine when cleaning the
spark arrester, otherwise it could cause injury
to the eyes, burns, carbon monoxide poison-
ing, possibly leading to death, and start a fire.
Always let the exhaust system cool prior to
touching exhaust components.EBU23920V-belt cooling duct check hose If dust or water collects in the V-belt cooling duct
check hose, remove the hose and clean it.
EBU23930V-belt case drain plug After riding in water deep enough to allow it to en-
ter the V-belt case, remove this plug to drain the
water from the case.TIPIf water drains from the V-belt case after removing
the plug, have a Yamaha dealer check the ATV as
the water may affect other engine parts.
1. V-belt cooling duct check hose (left front side of ATV)
1. V-belt case drain plug
U1CT60E0.book Page 35 Monday, May 31, 2010 10:05 AM

10-3
10
Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
YFM450FAPA Unleaded gasoline only
YFM45FGPA Regular unleaded gasoline only
YFM45FGPHA Regular unleaded gasoline only
YFM45FGPSA Regular unleaded gasoline only
Fuel tank capacity:
15.0 L (3.96 US gal, 3.30 Imp.gal)
Fuel reserve amount:
4.5 L (1.19 US gal, 0.99 Imp.gal)Carburetor:Type × quantity:
BSR33 x 1Spark plug (s):Manufacturer/model:
NGK/DR8EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, centrifugal automaticTransmission:Primary reduction system:
V-belt
Secondary reduction system:
Shaft drive
Secondary reduction ratio:
39/24 × 24/18 × 33/9 (7.944)Transmission type:
V-belt automatic
Operation:
Left hand operation
Reverse gear:
29/17 (1.706)
Low range:
45/16 (2.813)
High range:
38/23 (1.652)
Chassis:Frame type:
Steel tube frame
Caster angle:
2.5 °
Trail:
8.5 mm (0.33 in)Front tire:Type:
Tubeless
Size:
AT25 x 8-12
Manufacturer/model:
YFM450FAPA CHENG SHIN/C-828
YFM45FGPA MAXXIS/MU13
YFM45FGPHA MAXXIS/MU13
YFM45FGPSA MAXXIS/MU13Rear tire:Type:
Tubeless
Size:
AT25 x 10-12
U1CT60E0.book Page 3 Monday, May 31, 2010 10:05 AM

Horn switch .................................................................... 4-7IIdentification numbers .................................................. 11-1
Indicator lights and warning lights .................................. 4-2
Instruments, lights and switches .................................... 5-7LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-7
Low-range indicator light ................................................ 4-2MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................. 8-5
Maintenance chart, emission control system ................. 8-3
Model label ................................................................... 11-2
Multi-function display ..................................................... 4-5NNeutral indicator light ..................................................... 4-2OOn-Command differential gear lock switch .................... 4-9
On-Command four-wheel-drive switch ........................... 4-8
Override switch .............................................................. 4-7
Owner’s manual and tool kit ........................................... 8-2PPanels, removing and installing ................................... 8-10
Park indicator light ......................................................... 4-3
Parking ........................................................................... 6-5
Parking on a slope ......................................................... 6-6
Part locations ................................................................. 3-1RRear brake lever and pedal free play,
and pedal height, adjusting ........................................ 8-41
Rear knuckle pivots, lubricating ................................... 8-50Reverse indicator light ................................................... 4-3
Riding your ATV ............................................................. 7-1
SSafety information .......................................................... 2-1
Seat ............................................................................. 4-18
Shock absorber assemblies, adjusting the front and
rear ............................................................................ 4-22
Spark arrester, cleaning ............................................... 8-33
Spark plug, checking ................................................... 8-14
Specifications ............................................................... 10-1
Speed limiter ................................................................ 4-12
Stabilizer bushes, checking ......................................... 8-50
Starter (choke) ............................................................. 4-18
Start switch .................................................................... 4-7
Steering shaft, lubricating ............................................ 8-50
Storage .......................................................................... 9-2
Storage compartments ................................................ 4-19TTail/brake light bulb, replacing ..................................... 8-57
Throttle lever ......................................................... 4-12, 5-4
Throttle lever free play, adjusting ................................. 8-37
Tires ............................................................................... 5-4
Troubleshooting ........................................................... 8-60
Troubleshooting charts ................................................ 8-61VValve clearance ........................................................... 8-38
V-belt case drain plug .................................................. 8-35
V-belt cooling duct check hose .................................... 8-35
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-48
Wheel, installing ........................................................... 8-59
U1CT60E0.book Page 2 Monday, May 31, 2010 10:05 AM