differential YAMAHA GRIZZLY 450 2015 Owners Manual

EBU17421
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 .................................... 4-7
Throttle lever ............................................. 4-12
Speed limiter ............................................. 4-13
Front brake lever ....................................... 4-14
Brake pedal and rear brake lever .............. 4-14
Drive select lever ....................................... 4-15
Fuel tank cap ............................................ 4-15
Fuel ........................................................... 4-15 Fuel cock .................................................. 4-17
Starter (choke) ......................................... 4-18
Seat .......................................................... 4-19
Storage compartments ............................. 4-20
Front carrier .............................................. 4-22
Rear carrier ............................................... 4-22
Adjusting the front and rear shock
absorber assemblies .............................. 4-22
Auxiliary DC jack....................................... 4-24
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................................. 6-1U2LC61E0.book Page 1 Wednesday, February 26, 2014 3:56 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... ..................................... 7-22
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 ............... 8-16
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 ................ 8-34
V-belt case drain plug............................... 8-35
Adjusting the carburetor ........................... 8-35
Adjusting the engine idling speed ............ 8-35
Adjusting the throttle lever free play ......... 8-37
Valve clearance......................................... 8-37
Adjusting the drive select lever safety system cable .......................................... 8-38
Brakes....................................................... 8-38
Checking the front brake pads and rear brake friction plates ................................ 8-38
Checking the brake fluid level .................. 8-39
Changing the brake fluid .......................... 8-40
Checking the front brake lever free play... 8-40
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3-2
3
EBU17713Controls 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 67 8
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4-2
4
EBU26696Indicator lights and warning lights
EBU17991Low-range indicator light “ ”
This indicator light comes on when the transmis-
sion is in the low-range position.EBU17981High-range indicator light “ ”
This indicator light comes on when the transmis-
sion is in the high-range position.EBU17861Neutral 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” (for EPS model)
EPS
1
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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 func-
tioning.
 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. EBU29622On-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 dif-
ferential is not locked. In this case, start moving
to allow time for the differential to lock.
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4-8
4
EBU18191Override switch “OVERRIDE”
Top speed is normally limited when operating in
differential gear lock. If conditions require more
engine power when riding forward, push and hold
this switch to override the differential gear lock
speed limiting function. (See page 4-10.) Releas-
ing 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
EWB00151Always 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-
1. Override switch “OVERRIDE”U2LC61E0.book Page 8 Wednesday, February 26, 2014 3:56 PM

4-10
4
EBU18256On-Command differential gear lock switch
“4WD”/“LOCK”
WARNING
EWB00132Always 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
differential gear lock or vice versa while mov-
ing may cause the ATV to handle differently un-
expectedly. This could distract the operator
and increase the risk of losing control and
causing an accident.
WARNING
EWB00141Always 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 losecontrol 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.
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4-11
4
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. Stop 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
differential gear is locked, the differential gear lock
indicator light “DIFF. LOCK” will come on along
with the indicator “ ” in the multi-function dis-
play.
1. On-Command four-wheel-drive switch “2WD”/“4WD”
2. On-Command differential gear lock switch
“4WD”/“LOCK”
1. Differential gear lock lever
2. On-Command four-wheel-drive switch “2WD”/“4WD”
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4-12
4To 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 differen-
tial 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. 
Riding before the differential gear lock is prop-
erly engaged (e.g., when the indicator and indi-
cator 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 dif-
ferential gear lock speed limiter. (See page 4-8
for a detailed explanation of this switch.)
EBU18283Throttle leverOnce 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.
1. On-Command differential gear lock switch
“4WD”/“LOCK”U2LC61E0.book Page 12 Wednesday, February 26, 2014 3:56 PM

5-1
5
EBU19202
PRE-OPERATION CHECKS
EBU19225Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always
follow the inspection and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWB00482Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equip-
ment damage. Do not operate the vehicle if you find any problem. If a problem cannot be corrected
by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:
ITEMROUTINE PAGE
Fuel • Check fuel level in fuel tank,
and add recommended fuel if neces-
sary.
• Check fuel line for leakage. Correct if necessary. 4-15, 5-3
Engine oil • Check oil level in engine, and add recommended oil to specified
level if necessary.
• Check ATV for oil leakage. Correct if necessary. 5-3, 8-16
Final gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-21
Differential gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-24
Coolant • Check coolant level in reservoir, and add recommended coolant to
specified level if necessary.
• Check cooling system for leakage. Correct if necessary. 5-3, 8-26
U2LC61E0.book Page 1 Wednesday, February 26, 2014 3:56 PM