steering YAMAHA GRIZZLY 450 2012 Owners Manual

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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4-2
4
EBU26695Indicator lights and warning lights
EBU17990Low-range indicator light“”
This indicator light comes on when the transmis-
sion is in the low-range position.EBU17980High-range indicator light “”
This indicator light comes on when the transmis-
sion is in the high-range position.EBU17860Neutral indicator light “”
This indicator light comes on when the transmis-
sion is in the neutral position.
1. On-Command differential gear lock indicator light “DIFF. LOCK ”
2. Low-range indicator light “L”
3. High-range indicator light “H”
4. Neutral indicator light “N”
5. Reverse indicator light “R”
6. Park indicator light “P”
7. On-Command four-wheel-drive/differential gear lock indicator “”/“”
8. Coolant temperature warning light “”
1. Electric Power Steering warning light “EPS”
EPS
1
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4-3
4
EBU17842Reverse indicator light“”
This indicator light comes on when the transmis-
sion is in the reverse position.
Furthermore, this indicator light flashes when the
engine is being raced for 10 seconds or more.TIPIf the indicator light flashes under any other circum-
stances or the speedometer does not show the
speed while riding, have a Yamaha dealer check
the speed sensor circuit.EBU17970Park indicator light “”
This indicator light comes on when the transmis-
sion is in the park position.EBU17920Coolant temperature warning light “”
This warning light comes on when the engine over-
heats. When this occurs during operation, stop the
engine as soon as it is safe to do so and allow it to
cool down for about 10 minutes.
NOTICEECB00010
The engine may overheat if the ATV is over-
loaded. In this case, reduce the load to spec-
ification.
Start the engine after making sure that the
warning light is out. Continuous use while
the warning light is on may cause damage to
the engine.EBU27543Electric Power Steering warning light “EPS ”
This warning light comes on when the key is turned
to “ON ”, and then goes off once the engine is start-
ed. If the warning light remains on or comes on af-
ter the engine is started, the EPS system may not
be working correctly. When this occurs, have a
Yamaha dealer check the EPS system. The electrical circuit of the warning light can be
checked by turning the key to “ON ”. If the warning
light does not come on, have a Yamaha dealer
check the electrical circuit.
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4-4
4
TIP
If the engine is stopped using the engine stop
switch and the key is in the “ON ” position, the
EPS warning light comes on to indicate that the
power assistance for the steering is not function-
ing.
If the steering load is too heavy (i.e., excessive
steering use when the ATV is traveling at a slow
speed), the power assist is reduced to protect
the EPS motor from overheating.EBU29621On-Command four-wheel-drive indicator “”,
On-Command differential gear lock
indicator “” and indicator light “DIFF.
LOCK”
The On-Command four-wheel-drive indicator “”
comes on when the On-Command four-wheel-
drive switch is set to the “4WD ” position.
The On-Command differential gear lock
indicator “” and the On-Command differential
gear lock indicator light “DIFF. LOCK ” come on
when the On-Command differential gear lock
switch is set to the “LOCK ” position.
TIP
Due to the synchronizing mechanism in the dif-
ferential gear case, the four-wheel-drive indica-
tor may not come on until the ATV starts moving.
When the On-Command differential gear lock
switch is set to “LOCK ”, the indicator “” and
the indicator light “DIFF. LOCK ” will flash until
the differential gear is locked. If the indicator and
the indicator light continue to flash, the differen-
tial is not locked. In this case, start moving to al-
low time for the differential to lock.
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6-7
6
Yamaha or modifications not specifically recom-
mended by Yamaha, even if sold and installed by
a Yamaha dealer.
Aftermarket parts, accessories, and modifica-
tions
While you may find aftermarket products similar in
design and quality to genuine Yamaha Accesso-
ries, recognize that some aftermarket accessories
or modifications are not suitable because of poten-
tial safety hazards to you or others. Installing after-
market products or having other modifications
performed to your ATV that change any of the ve-
hicle ’s design or operation characteristics can put
you and others at greater risk of serious injury or
death. You are responsible for injuries related to
changes in the vehicle.
Keep the following in mind when considering an
accessory or operating an ATV which has acces-
sories.

Accessories should be rigidly and securely
mounted. An accessory which can shift position
or come off while you are riding could affect your
ability to control the ATV.
Do not mount an accessory where it could inter-
fere with your ability to control the ATV. Exam-
ples include (but are not limited to) a heavy or bulky object attached to the handlebars which
could make steering difficult, an accessory that
limits your ability to move around on the seat, or
one that limits your view.

Use extra caution when riding an ATV with ac-
cessories. The ATV may handle differently than
it does without accessories.EBU27571Loading
WARNING
EWB00820Never exceed the stated load capacity for this
ATV. Overloading this ATV or carrying or tow-
ing cargo improperly could cause changes in
ATV handling which could lead to an accident.
Cargo should be properly distributed and se-
curely attached. Reduce speed when carrying
cargo or pulling a trailer. Allow greater dis-
tance for braking.Cargo or a trailer can change the stability and han-
dling of an ATV.
You must use common sense and good judgment
when carrying cargo or towing a trailer. Keep the
following points in mind:
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7-18
7

Shift your weight to the uphill side of the
ATV.
Never attempt to turn the ATV around on any
hill until you have mastered the turning tech-
nique as described in the Owner’s Manual on
level ground. Be very careful when turning
on any hill.Traversing a sloping surface on your ATV requires
you to properly position your weight to maintain
proper balance. Be sure that you have learned the
basic riding skills on flat ground before attempting
to cross a sloping surface. Avoid slopes with slip-
pery surfaces or rough terrain that may upset your
balance.
As you travel across a slope, lean your body in the
uphill direction. It may be necessary to correct the
steering when riding on loose surfaces by pointing
the front wheels slightly uphill. When riding on
slopes, be sure not to make sharp turns either up
or down hill.
If your ATV does begin to tip over, gradually steer
in the downhill direction if there are no obstacles in
your path. As you regain proper balance, gradually
steer again in the direction you wish to travel. CROSSING THROUGH SHALLOW WATER
WARNING
EWB01641Operating this vehicle through deep or fast-
flowing water can lead to loss of control or an
overturn. To reduce your risk of drowning or
other injuries, use care when crossing through
water. Never operate this ATV water deeper
than the depth specified in your Owner
’s Man-
ual, as tires may float, increasing the risk of an
overturn.
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7-22
7

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
control.Care should be used when riding on loose or slip-
pery surfaces since the ATV may slide. If unex-
pected and uncorrected, sliding could lead to an
accident.
To reduce the tendency for the front wheels to slide
in loose or slippery conditions, positioning your
weight over the front wheels will sometimes help.If the rear wheels of your ATV start to slide side-
ways, control can usually be regained (if there is
room to do so) by steering in the direction of the
slide. Applying the brakes or accelerating is not
recommended until you have corrected the slide.
With practice, over a period of time, skill at con-
trolled sliding can be developed. The terrain
should be chosen carefully before attempting such
maneuvers, since both stability and control are re-
duced. Bear in mind that sliding maneuvers should
always be avoided on extremely slippery surfaces
such as ice, since all control may be lost.U1CT61E0.book Page 22 Wednesday, April 20, 2011 6:36 PM

8-7
8
13*Rear knuckle pivots Lubricate with lithium-soap-based grease. √√√
14 *Steering shaft Lubricate with lithium-soap-based grease. √√√
15 *Steering system 
Check operation and repair or replace if damaged.
 Check toe-in and adjust if necessary. √√√√√
16 *Engine mount 
Check for cracks or other damage, and replace if
necessary. √√√
17 *Axle boots 
Check for cracks or other damage, and replace if
necessary. √√√√√
18 Engine oil 
Change.
 Check ATV for oil leakage, and correct if neces-
sary. √ √√√
19 Engine oil filter car-
tridge 
Replace. √√√
20 *Engine oil strainer Clean. √√√
21 Differential gear oil 
Change.
 Check ATV for oil leakage, and correct if neces-
sary. √√
22 Final gear oil 
Change.
 Check ATV for oil leakage, and correct if neces-
sary. √ √√√
NO. ITEM
CHECK OR MAINTENANCE
JOB INITIAL EVERY
Whichev- er comes first month136612
km
(mi) 320
(200) 1300
(800) 2500
(1600) 2500
(1600) 5000
(3200)
hours 20 80 160 160 320U1CT61E0.book Page 7 Wednesday, April 20, 2011 6:36 PM

8-51
8
TIPFor parts equipped with a grease nipple, use a
grease gun.EBU25092Lubricating the steering shaft The steering shaft must be lubricated by a Yamaha
dealer at the intervals specified in the periodic
maintenance and lubrication chart.
TIPFor parts equipped with a grease nipple, use a
grease gun.EBU29188Battery The battery is located under the seat. (See page
4-18.)
This model is equipped with a VRLA (Valve Regu-
lated Lead Acid) battery. There is no need to check
the electrolyte or to add distilled water. However,
the battery lead connections need to be checked
and, if necessary, tightened.
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.
Recommended lubricant:
Lithium-soap-based grease
1. Grease nipple
Recommended lubricant:Lithium-soap-based grease
U1CT61E0.book Page 51 Wednesday, April 20, 2011 6:36 PM

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, adjusting the lever, pedal free play and
pedal height ............................................................... 8-41
Rear knuckle pivots, lubricating ................................... 8-50 Reverse 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 ............................................. 8-51
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 ........................................................... 8-61
Troubleshooting charts ................................................. 8-62VValve 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 ..................................... 8-49
Wheel, installing ........................................................... 8-59
U1CT61E0.book Page 2 Wednesday, April 20, 2011 6:36 PM