four wheel drive YAMAHA GRIZZLY 450 2012 Owners Manual

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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
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13 678
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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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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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switch to override the differential gear lock speed
limiting function. (See page 4-9.) Releasing the
switch restores the speed limiting function.
While the override switch is pushed, the segments
of the speedometer digits will appear as shown in
the figure.
TIPIf the digits of the speedometer appear as shown
when the switch is NOT being pushed, this could
indicate a malfunction in the electrical system. In
this case, take the ATV to a Yamaha dealer at the
first opportunity.
WARNING
EWB00150Always ride at a slow speed when the ATV is in
four-wheel-drive differential gear lock, and al-
low extra time and distance for maneuvers.
All wheels turn at the same speed when the dif-
ferential is locked, so it takes more effort to
turn the ATV. The effort needed to turn increas-
es with the riding speed. You may lose control
and have an accident if you cannot make a
sharp enough turn for the speed you are trav-
eling.EBU26606On-Command four-wheel-drive switch
“
2WD ”/“ 4WD ”
WARNING
EWB00163Always stop the ATV before changing from
two-wheel drive to four-wheel drive and vice
versa. The ATV handles differently in two-
wheel drive than in four-wheel drive in some
circumstances. Changing from two-wheel
drive to four-wheel drive or vice versa while
moving may cause the ATV to unexpectedly
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4handle differently. This could distract the oper-
ator and increase the risk of losing control and
of causing an accident.
This ATV is equipped with a switch to change from
two-wheel drive to four-wheel drive and vice versa.
Select the appropriate drive according to the ter-
rain and the conditions.
“
2WD ” (two-wheel drive): Power is supplied to
the rear wheels.
“ 4WD ” (four-wheel drive): Power is supplied to
the rear and front wheels.
To change from two-wheel drive to four-wheel
drive, stop the ATV and push the switch in to the
“ 4WD ” position. Then, the four-wheel-drive
indicator “” comes on in the multi-function dis-
play.
To change from four-wheel drive to two-wheel
drive, stop the ATV and push the switch in to the
“ 2WD ” position.
EBU18255On-Command differential gear lock switch
“ 4WD ”/“ LOCK ”
WARNING
EWB00131Always stop the ATV before changing from
four-wheel drive to four-wheel-drive differen-
tial gear lock or vice versa.
The ATV handles differently in four-wheel drive
than in differential gear lock in some circum-
stances. Changing from four-wheel drive to dif-
ferential gear lock or vice versa while moving
may cause the ATV to handle differently unex-1. On-Command four-wheel-drive switch “2WD”/“4WD ”
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4
pectedly. This could distract the operator and
increase the risk of losing control and causing
an accident.
WARNING
EWB00140Always ride at a slow speed when the ATV is in
differential gear lock, and allow extra time and
distance for maneuvers.
All wheels turn at the same speed when the dif-
ferential gear is locked, so it takes more effort
to turn the ATV. The effort needed to turn in-
creases with the riding speed. You may lose
control and have an accident if you cannot
make a sharp enough turn for the speed you
are traveling.This ATV is equipped with a switch allowing you to
lock the differential gear when in four-wheel drive.
Select the appropriate switch position according to
the terrain and the conditions.
“
4WD ” (four-wheel drive): Power is supplied to
the rear and front wheels.

“ LOCK ” (four-wheel drive with the differential
gear locked): Power is supplied to the rear and
front wheels and the differential gear is locked.
Unlike in four-wheel drive, all wheels turn at the
same speed.
To lock the differential gear in four-wheel drive,
make sure the On-Command four-wheel-drive
switch is pushed in to the “4WD ” position.1. On-Command four-wheel-drive switch “2WD ”/“4WD ”
2. On-Command differential gear lock switch “4WD”/“LOCK ”
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4Stop the ATV, move the differential gear lock lever
to position (a), and then push the differential gear
lock switch in to the “LOCK ” position. When the dif-
ferential gear is locked, the differential gear lock in-
dicator light “ DIFF. LOCK” will come on along with
the indicator “” in the multi-function display. To release the differential gear lock, stop the ATV
and push the switch to the
“4WD ” position.
TIP
When the switch is set to “LOCK ”, the differential
gear lock indicator and indicator light will flash
until the differential gear is locked.
When the indicator and indicator light are flash-
ing, turning the handlebar back and forth will
help the differential gear lock to engage.
1. Differential gear lock lever
2. On-Command four-wheel-drive switch “2WD”/“4WD ”
1. On-Command differential gear lock switch “4WD”/“LOCK ”
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Riding before the differential gear lock is proper-
ly engaged (e.g., when the indicator and indica-
tor light are flashing) will cause the vehicle
speed to be limited until engagement is com-
plete.
When the ATV is in four-wheel-drive differential
gear lock, the maximum traveling speed is limit-
ed to 35 km/h (22 mi/h). However, if conditions
require full engine power to be available, push
and hold the override switch to disable the differ-
ential gear lock speed limiter. (See page 4-7 for
a detailed explanation of this switch.)EBU18282Throttle lever Once the engine is running, pushing the throttle le-
ver will increase the engine speed.
Regulate the speed of the ATV by varying the
throttle position. Because the throttle is spring-
loaded, the ATV will decelerate, and the engine will
return to an idle any time the throttle lever is re-
leased.Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
EBU18323Speed limiter Your ATV is equipped with an adjustable speed
limiter. The speed limiter keeps the throttle from
fully opening, even when the throttle lever is
pushed to the maximum.
1. Loosen the locknut.
2. To increase the maximum engine power avail- able and the maximum speed of the ATV, turn
the adjusting screw in direction (a). To de-1. Throttle lever
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EBU30250Replacing a fuse The main fuse, the EPS fuse, and the fuse box are
located under the seat. (See page 4-18.)If a fuse is blown, replace it as follows.1. Turn the key to “ OFF” and turn off all electrical
circuits.
NOTICEECB00640To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.
1. Main fuse
2. Fuse box
3. EPS fuse
4. Spare main fuse
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1. Headlight fuse
2. Signaling system fuse
3. Ignition fuse
4. Four-wheel-drive motor fuse
5. Backup fuse (for clock)
6. Auxiliary DC jack fuse
7. Spare fuse
1
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5
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82. Remove the blown fuse, and then install a
new fuse of the specified amperage.
WARNING! Always use a fuse of the spec-
ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02172]
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.EBU25481Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.1. Remove the cover at the rear of the headlight by pulling it off.
2. Remove the headlight bulb holder cover by pulling it off.
Specified fuses:
Main fuse:30.0 A
Headlight fuse: 15.0 A
Ignition fuse: 10.0 A
Four-wheel-drive motor fuse: 10.0 A
Signaling system fuse: 10.0 A
Auxiliary DC jack fuse: 10.0 A
Backup fuse: 5.0 A
EPS fuse: 40.0 A1. Cover at the rear of the headlight
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