brake YAMAHA GRIZZLY 450 2012 Owners Manual

EBU17420
TABLE OF CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ............................ 1-1
SAFETY INFORMATION .............................. 2-1
DESCRIPTION .............................................. 3-1Left view ...................................................... 3-1
Right view.................................................... 3-1
Controls and instruments ............................ 3-2
INSTRUMENT AND CONTROL
FUNCTIONS .................................................. 4-1 Main switch ................................................ 4-1
Indicator lights and warning lights .............. 4-2
Multi-function display .................................. 4-5
Fuel gauge ................................................. 4-6
Handlebar switches .................................... 4-6
Throttle lever ............................................ 4-12
Speed limiter ............................................ 4-12
Front brake lever ...................................... 4-13
Brake pedal and rear brake lever ............. 4-13
Drive select lever ...................................... 4-14
Fuel tank cap ............................................ 4-14
Fuel .......................................................... 4-15 Fuel cock ..................................................4-16
Starter (choke) ..........................................4-18
Seat ..........................................................4-18
Storage compartments .............................4-19
Front carrier ..............................................4-22
Rear carrier ...............................................4-22
Adjusting the front and rear shock
absorber assemblies ...............................4-22
Auxiliary DC jack .......................................4-23
PRE-OPERATION CHECKS ..........................5-1 Fuel .............................................................5-3
Engine oil ....................................................5-3
Final gear oil ...............................................5-3
Differential gear oil ......................................5-3
Coolant .......................................................5-3
Front and rear brakes .................................5-3
Throttle lever ...............................................5-4
Tires ............................................................5-4
Chassis fasteners .......................................5-7
Instruments, lights and switches .................5-7
OPERATION...................................................6-1 Starting a cold engine .................................6-1U1CT61E0.book Page 1 Wednesday, April 20, 2011 6:36 PM

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 ....................... 8-2 Periodic 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 ...........................8-41
Checking the front brake lever free play ...8-41
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Adjusting the rear brake lever and brake pedal free play, and the brake
pedal height ............................................ 8-41
Axle boots ................................................ 8-46
Brake light switches ................................. 8-47
Checking and lubricating the cables ........ 8-47
Checking and lubricating the front and rear brake levers .................................... 8-48
Checking and lubricating the brake pedal ...................................................... 8-48
Checking the wheel hub bearings ............ 8-49
Lubricating the drive shaft universal joint ......................................................... 8-49
Checking the stabilizer bushes ................ 8-50
Lubricating the rear knuckle pivots ........... 8-50
Lubricating the steering shaft ................... 8-51
Battery ...................................................... 8-51
Replacing a fuse ...................................... 8-54
Replacing a headlight bulb ....................... 8-55
Adjusting a headlight beam ...................... 8-57
Replacing the tail/brake light bulb ............ 8-57
Removing a wheel .................................... 8-59
Installing a wheel ...................................... 8-59
Troubleshooting ....................................... 8-61
Troubleshooting charts ............................. 8-62 CLEANING AND STORAGE ..........................9-1
Cleaning ......................................................9-1
Storage .......................................................9-2
SPECIFICATIONS .......................................10-1
CONSUMER INFORMATION.......................11-1 Identification numbers ...............................11-1
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2-3
2steady speed when climbing a hill. If you stall or
roll backwards, follow the special procedure for
braking described in this manual. Dismount on
the uphill side or to a side if pointed straight up-
hill. Turn the ATV around and remount, following
the procedure described in this manual.

Always check for obstacles before operating in a
new area.
Never attempt to operate over large obstacles,
such as large rocks or fallen trees. Always follow
proper procedures when operating over obsta-
cles as described in this manual.
Always be careful when skidding or sliding.
Learn to safely control skidding or sliding by
practicing at low speeds and on level, smooth
terrain. On extremely slippery surfaces, such as
ice, go slowly and be very cautious in order to re-
duce the chance of skidding or sliding out of con-
trol.
Never operate an ATV in fast flowing water or in
water deeper than that recommended in this
manual. Remember that wet brakes may have
reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several
times to let friction dry out the linings.

Always be sure there are no obstacles or people
behind you when you operate in reverse. When
it is safe to proceed in reverse, go slowly.
Always use the size and type of tires specified in
this manual.
Always maintain proper tire pressure as de-
scribed in this manual.
Never modify an ATV through improper installa-
tion or use of accessories.
Never exceed the stated load capacity for an
ATV. Cargo should be properly distributed and
securely attached. Reduce speed and follow in-
structions in this manual for carrying cargo or
pulling a trailer. Allow greater distance for brak-
ing.
WARNING
EWB00072Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon monoxide,
a deadly gas. Breathing carbon monoxide can
cause headaches, dizziness, drowsiness, nau-
sea, confusion, and eventually death.
Carbon Monoxide is a colorless, odorless,
tasteless gas which may be present even if you
do not see or smell any engine exhaust. Deadly
levels of carbon monoxide can collect rapidly
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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 7891011
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
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3-2
3
EBU17712Controls and instruments
TIPThe ATV you have purchased may differ slightly
from the figures shown in this manual.
1. Rear brake lever
2. Handlebar switches
3. Starter (choke)
4. Horn switch
5. Drive select lever
6. Multi-function display
7. Main switch
8. Auxiliary DC jack
9. Fuel tank cap
10.On-Command four-wheel-drive/differential gear lock switch
11.Throttle lever
12.Front brake lever
13.Front storage compartment
9
54
13121110
2
13 678
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4-13
4crease the maximum engine power available
and the maximum speed of the ATV, turn the
adjusting screw in direction (b). Do not turn
the adjusting screw out more than 12 mm
(0.47 in) or the throttle cable could be dam-
aged. Always make sure the throttle lever free
play is adjusted to 3.0–
5.0 mm (0.12–0.20 in).
(See page 8-37.) WARNING! Improper ad-
justment of the speed limiter and throttle
could cause throttle cable damage or im-
proper throttle operation. You could lose
control, resulting in an accident.
[EWB00241]
3. Tighten the locknut.EBU18391Front brake lever The front brake lever is located on the right handle-
bar. To apply the front brake, pull the brake lever
toward the handlebar grip.EBU18442Brake pedal and rear brake lever The brake pedal is located on the right side of the
ATV and the rear brake lever is located on the left
handlebar. To apply the rear brake, push down on
the brake pedal or pull the brake lever toward the
handlebar grip.
1. Locknut
2. Adjusting screw
3. No more than 12 mm (0.47 in)
1. Front brake lever
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4-14
4
EBU18611Drive select lever The drive select lever is used to shift your ATV into
the low-range, high-range, neutral, reverse and
park positions. See the “Operating the drive select
lever and driving in reverse ” section on page 6-3
for the drive select lever operation.EBU18720Fuel tank cap Remove the fuel tank cap by turning it counter-
clockwise.
1. Brake pedal
1. Rear brake lever
1. Drive select lever
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5-2
5
Front brake
Check 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 reservoir, and add specified brake fluid to
specified level if necessary.
 Check hydraulic system for leakage. Correct if necessary. 5-3, 8-39, 8-40, 8-41
Rear brake 
Check operation, and correct if necessary.
 Lubricate cables if necessary.
 Check lever and pedal free play, and adjust if necessary. 5-3, 8-39, 8-41
Throttle lever 
Make sure that operation is smooth. Lubricate cable and lever hous-
ing if necessary.
 Check lever free play, and adjust if necessary. 5-4, 8-37
Control cables Make sure that operation is smooth. Lubricate if necessary. 8-47
Wheels and tires 
Check wheel condition, and replace if damaged.
 Check tire condition and tread depth. Replace if necessary.
 Check air pressure. Correct if necessary. 5-4
Brake pedal 
Make sure that operation is smooth. Lubricate pedal pivoting point if
necessary. 8-48
Brake levers 
Make sure that operation is smooth. Lubricate lever pivoting points if
necessary. 8-48
Axle boots Check for cracks or damage, and replace if necessary. 8-46
Chassis fasteners Make sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments, lights and
switches 
Check operation, and correct if necessary. 5-7
ITEM ROUTINE PAGE
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5-3
5
EBU19541Fuel Make sure that there is sufficient fuel in the tank.
(See page 4-15.)EBU19560Engine oil Make sure that the engine oil is at the specified lev-
el. Add oil as necessary. (See page 8-17.)EBU19590Final gear oil Make sure that the final gear oil is at the specified
level. Add oil as necessary. (See page 8-21.)EBU19600Differential gear oil Make sure that the differential gear oil is at the
specified level. Add oil as necessary. (See page
8-24.)EBU19631Coolant Make sure that the coolant is at the specified level.
Add coolant as necessary. (See page 8-26.)
TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture.EBU28532Front 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 8-41.)
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)
Check the brake fluid level. Add fluid if necessary.
(See page 8-40.)
Specified brake fluid:DOT 4
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