2005 YAMAHA GRIZZLY 660 differential

EBU00015
1-CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ....................... 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION .................................... 3-1
Identification number records ............... 3-3
Key identification number ..................... 3-5
Vehicle identification number ............... 3-7
Model label ........................................... 3-9
CONTROL FUNCTIONS ......................... 4-1
Main switch........................................... 4-1
Indicator and warning lights.................. 4-3
Speedometer unit ............................... 4-11
Handlebar switches ............................ 4-19
Throttle lever ...................................... 4-37
Speed limiter ...................................... 4-39
Front brake lever ................................ 4-41
Brake pedal and rear brake lever ....... 4-43
Drive select lever ................................ 4-45
Recoil starter ...................................... 4-45
Fuel tank cap ...................................... 4-47
1234
Fuel cock............................................ 4-49
Starter (choke) ................................... 4-51
Seat.................................................... 4-53
Storage compartment ........................ 4-55
Front carrier ....................................... 4-55
Rear carrier ........................................ 4-55
Front and rear shock absorber
adjustment ....................................... 4-57
Auxiliary DC jack ................................ 4-61
PRE-OPERATION CHECKS ................... 5-1
Front and rear brakes .......................... 5-7
Fuel .................................................... 5-11
Engine oil ........................................... 5-15
Final gear oil ...................................... 5-17
Differential gear oil ............................. 5-19
Coolant............................................... 5-19
Throttle lever ...................................... 5-21
Fittings and fasteners......................... 5-21
Lights ................................................. 5-23
Switches............................................. 5-23
Tires ................................................... 5-25
How to measure tire pressure ............ 5-29
Tire wear limit..................................... 5-31
5
U5KM63.book Page 1 Monday, March 15, 2004 11:44 AM

OPERATION ............................................6-1
Starting a cold engine ...........................6-3
Starting a warm engine .........................6-9
Warming up...........................................6-9
Drive select lever operation and
reverse driving ..................................6-11
Engine break-in ...................................6-17
Parking ................................................6-19
Parking on a slope ..............................6-21
Accessories and loading .....................6-23
RIDING YOUR ATV..................................7-1
Getting to know your ATV .....................7-3
Ride with care and good judgement .....7-5
Be careful where you ride ...................7-27
Turning your ATV ................................7-39
Climbing uphill.....................................7-45
Riding downhill ....................................7-55
Crossing a slope .................................7-59
Crossing through shallow water ..........7-63
Riding over rough terrain ....................7-69
Sliding and skidding ............................7-71
What to do if ........................................7-75
What to do...........................................7-75
67
PERIODIC MAINTENANCE AND
ADJUSTMENT ......................................... 8-1
Owner’s manual and tool kit ................. 8-3
Periodic maintenance/lubrication.......... 8-7
Panel removal and installation............ 8-17
Engine oil and oil filter cartridge ......... 8-39
Final gear oil ....................................... 8-53
Differential gear oil.............................. 8-57
Cooling system ................................... 8-63
Changing the coolant.......................... 8-67
Axle boots ........................................... 8-75
Spark plug inspection ......................... 8-77
Air filter element cleaning ................... 8-83
V-belt cooling duct check hose ........... 8-91
V-belt case drain plug ......................... 8-91
Carburetor adjustment ........................ 8-93
Idle speed adjustment ........................ 8-95
Valve clearance adjustment ............... 8-97
Select lever safety system cable
adjustment ........................................ 8-97
Throttle lever adjustment .................... 8-99
Front brake pad check ...................... 8-101
Checking the rear brake pads .......... 8-101
Checking the brake fluid level........... 8-103
Brake fluid replacement .................... 8-107
Front brake lever free play................ 8-109
8
U5KM63.book Page 2 Monday, March 15, 2004 11:44 AM

4-3
1. 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. Four-wheel-drive indicator “”/“”
8. Coolant temperature warning light “”
1. Témoin de blocage du différentiel “DIFF. LOCK”
2. Témoin du rapport inférieur “L”
3. Témoin du rapport supérieur “H”
4. Témoin de point mort “N”
5. Témoin de marche arrière “R”
6. Témoin de stationnement “P”
7. Indicateur 4x4 “”/“”
8. Témoin d’avertissement de la température du liquide de
refroidissement “”
1. Luz indicadora de bloqueo del diferencial “DIFF.LOCK”
2. Luz indicadora de margen bajo “L”
3. Luz indicadora de margen alto “H”
4. Luz de control de punto muerto “N”
5. Luz indicadora de marcha atrás “R”
6. Luz indicadora de estacionamiento “P”
7. Indicador del modo de tracción en las cuatro ruedas “”/“”
8. Luz de aviso de la temperatura del refrigerante “”
DIFF.
LOCK
DIFF.
LOCK
DIFF.
LOCK
EBU00802
Indicator and warning lights
EBU10601
Differential gear lock indicator light
“DIFF. LOCK”
This indicator light and the differential gear lock in-
dicator in the display come on when the differential
gear lock switch is set to the “4WD-LOCK” posi-
tion.NOTE:_ When the switch is set to “LOCK”, the differential
gear lock indicator light will flash until the differen-
tial gear is locked. _
EBU01122
Low-range indicator light “L”
This indicator light comes on when the drive select
lever is in the “L” position.
EBU01064
High-range indicator light “H”
This indicator light comes on when the drive select
lever is in the “H” position.
U5KM63.book Page 3 Monday, March 15, 2004 11:44 AM

4-5
1. 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. Four-wheel-drive indicator “”/“”
8. Coolant temperature warning light “”
1. Témoin de blocage du différentiel “DIFF. LOCK”
2. Témoin du rapport inférieur “L”
3. Témoin du rapport supérieur “H”
4. Témoin de point mort “N”
5. Témoin de marche arrière “R”
6. Témoin de stationnement “P”
7. Indicateur 4x4 “”/“”
8. Témoin d’avertissement de la température du liquide de
refroidissement “”
1. Luz indicadora de bloqueo del diferencial “DIFF.LOCK”
2. Luz indicadora de margen bajo “L”
3. Luz indicadora de margen alto “H”
4. Luz de control de punto muerto “N”
5. Luz indicadora de marcha atrás “R”
6. Luz indicadora de estacionamiento “P”
7. Indicador del modo de tracción en las cuatro ruedas “”/“”
8. Luz de aviso de la temperatura del refrigerante “”
DIFF.
LOCK
DIFF.
LOCK
DIFF.
LOCK
EBU00972
Neutral indicator light “N”
This indicator light comes on when the drive select
lever is in the “N” position.
EBU00867
Reverse indicator light “R”
This indicator light comes on when the drive select
lever is in the “R” reverse position.NOTE:_ If the indicator light flashes or the speedometer
does not show the speed while riding, have a
Yamaha dealer check the speed sensor circuit. _
EBU00609
Park indicator light “P”
This indicator light comes on when the drive select
lever is in the “P” (park) position.
U5KM63.book Page 5 Monday, March 15, 2004 11:44 AM

4-7
EBU11312
Four-wheel-drive indicator “”/“”
This indicator comes on when the “2WD”/“4WD”
switch is set to the “4WD” position. The differential
gear lock indicator “DIFF.LOCK” in the four-wheel-
drive indicator also comes on when the “LOCK”-
“4WD” switch is set to the “4WD-LOCK” position.NOTE:_ Due to the synchronizing mechanism in the differ-
ential gear case, the four-wheel drive indicator
may not come on until the ATV starts moving. _
DIFF.
LOCK
1. 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. Four-wheel-drive indicator “”/“”
8. Coolant temperature warning light “”
1. Témoin de blocage du différentiel “DIFF. LOCK”
2. Témoin du rapport inférieur “L”
3. Témoin du rapport supérieur “H”
4. Témoin de point mort “N”
5. Témoin de marche arrière “R”
6. Témoin de stationnement “P”
7. Indicateur 4x4 “”/“”
8. Témoin d’avertissement de la température du liquide de
refroidissement “”
1. Luz indicadora de bloqueo del diferencial “DIFF.LOCK”
2. Luz indicadora de margen bajo “L”
3. Luz indicadora de margen alto “H”
4. Luz de control de punto muerto “N”
5. Luz indicadora de marcha atrás “R”
6. Luz indicadora de estacionamiento “P”
7. Indicador del modo de tracción en las cuatro ruedas “”/“”
8. Luz de aviso de la temperatura del refrigerante “”
DIFF.
LOCK
DIFF.
LOCK
DIFF.
LOCK
U5KM63.book Page 7 Monday, March 15, 2004 11:44 AM

4-9
EBU00860
Coolant temperature warning light “”
When the coolant temperature reaches a specified
level, this light comes on to warn that the coolant
temperature is too hot. If the light comes on during
operation, stop the engine as soon as it is safe to
do so and allow the engine to cool down for about
10 minutes.CAUTION:_

The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.


After restarting, make sure that the light is
out. Continuous use while the light is on
may cause damage to the engine.
_
1. 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. Four-wheel-drive indicator “”/“”
8. Coolant temperature warning light “”
1. Témoin de blocage du différentiel “DIFF. LOCK”
2. Témoin du rapport inférieur “L”
3. Témoin du rapport supérieur “H”
4. Témoin de point mort “N”
5. Témoin de marche arrière “R”
6. Témoin de stationnement “P”
7. Indicateur 4x4 “”/“”
8. Témoin d’avertissement de la température du liquide de
refroidissement “”
1. Luz indicadora de bloqueo del diferencial “DIFF.LOCK”
2. Luz indicadora de margen bajo “L”
3. Luz indicadora de margen alto “H”
4. Luz de control de punto muerto “N”
5. Luz indicadora de marcha atrás “R”
6. Luz indicadora de estacionamiento “P”
7. Indicador del modo de tracción en las cuatro ruedas “”/“”
8. Luz de aviso de la temperatura del refrigerante “”
DIFF.
LOCK
DIFF.
LOCK
DIFF.
LOCK
U5KM63.book Page 9 Monday, March 15, 2004 11:44 AM

4-23 1. Override switch “OVERRIDE”
1. Contacteur de désactivation “OVERRIDE”
1. Interruptor de cancelación “OVERRIDE”
EBU13811
Override switch “OVERRIDE”
Top speed is normally limited when operating in
4WD-LOCK. If conditions require more engine
power when riding forward, push and hold this
switch to override the 4WD-LOCK speed limiting
function. (See page 4-33 for a detailed explanation
about the differential gear lock switch and its func-
tion.) Releasing the switch restores the speed lim-
iting function.
While this switch is pushed, the segments of the
speedometer digits will appear as shown in the fig-
ure.NOTE:_ If 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. _
U5KM63.book Page 23 Monday, March 15, 2004 11:44 AM

4-27 1. On-Command four-wheel drive switch “2WD”/“4WD”
2. Differential gear lock switch “LOCK”/“4WD”
1. Contacteur de commande du mode de traction “2WD”/“4WD”
2. Contacteur de blocage du différentiel “LOCK”/“4WD”
1. Selector de tracción en las cuatro ruedas “2WD”/“4WD”
2. Selector de bloqueo del diferencial “LOCK”/“4WD”
EBU13803
On-Command four-wheel drive and differential
gear lock switches
This ATV is equipped with an On-Command four-
wheel drive switch “2WD”/“4WD” and a differential
gear lock switch “LOCK”/“4WD”. Select the appro-
priate drive according to terrain and the conditions.

Two-wheel drive (2WD): Power is supplied to
the rear wheels only.


Four-wheel drive (4WD): Power is supplied to
the rear and front wheels.


Four-wheel drive with the differential gear
locked (4WD-LOCK): Power is supplied to the
rear and front wheels when the differential gear
is locked (“DIFF.LOCK”). Unlike the 4WD
mode, all wheels turn at the same speed.
U5KM63.book Page 27 Monday, March 15, 2004 11:44 AM