2006 YAMAHA GRIZZLY 660 belt

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
U2C660.book Page 2 Monday, April 11, 2005 10:29 AM

3-1
EBU00032
DESCRIPTION AND MACHINE
IDENTIFICATION1. Rear shock absorber spring
preload adjusting ring
2. Storage compartment and tool
kit
3. Air filter case
4. Front brake fluid reservoir
5. Front shock absorber spring
preload adjusting ring
6. Rear brake fluid reservoir
7. Brake pedal
8. V-belt case drain plug
9. Radiator cap
10. Drive select lever
11. Fuel tank cap
12. Fuel cock
13. Battery
14. Fuses15. Engine oil dipstick
16. Recoil starter
17. Coolant reservoir
18. Drive select lever box check
hose
19. V-belt cooling duct check hose
20. Rear brake lever
21. Left handlebar switches
22. Horn switch
23. Speedometer unit
24. Main switch
25. Right handlebar switches
26. Throttle lever
27. Front brake lever
28. Auxiliary DC jack
29. Starter (choke)NOTE:The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
U2C660.book Page 1 Monday, April 11, 2005 10:29 AM

7-65
1. Air filter case check hose
1. Flexible de contrôle du boîtier de filtre à air
1. Manguera de comprobación de la caja del filtro de aire
Test your brakes after leaving the water. Do not
continue to ride your ATV without verifying that
you have regained proper braking ability.CAUTION:_ After riding your ATV in water, be sure to drain
the trapped water by removing the check hose
at the bottom of the air filter case, the V-belt
cooling duct check hose and the drive select
lever box check hose. Also, remove the V-belt
case drain plug to drain any water that may
have accumulated. Wash the ATV in fresh wa-
ter if it has been operated in salt water or mud-
dy conditions. _
U2C660.book Page 65 Monday, April 11, 2005 10:29 AM

7-67 1. V-belt cooling duct check hose (left side)
1. Flexible de contrôle du conduit de refroidissement de la courroie
trapézoïdale (côté gauche)
1. Manguera de comprobación del conducto de enfriamiento de
la correa trapezoidal (Lado izquierdo)
1. Drive select lever box check hose
1. Flexible de contrôle du boîtier du levier de présélection
1. Manguera de comprobación de la caja de la palanca de selec-
ción de marcha
1. V-belt case drain plug
1. Boulon de vidange du carter de courroie trapézoïdale
1. Tapón de drenaje de la caja de la correa trapezoidal
U2C660.book Page 67 Monday, April 11, 2005 10:29 AM

8-8
Fuel line*Check fuel hose for cracks or damage.
Replace if necessary.Engine oil
Replace (Warm engine before draining).Engine oil filter cartridge
Replace.Final gear oil
Check oil level/oil leakage.
Replace.Differential gear oil
Front brake*Check operation/fluid leakage/see NOTE page 8-9.
Correct if necessary.Rear brake*Check operation/fluid leakage/see NOTE page 8-9.
Correct if necessary.Select lever safety system
cable*Check operation.
Adjust if necessary.V-belt*Check operation.
Check for cracks or damage.Wheels*Check balance/damage/runout.
Repair if necessary.Wheel bearing*Check bearing assemblies for looseness/damage.
Replace if damaged.Front and rear
suspension*Check operation.
Correct if necessary.Steering system*Check operation/Replace if damaged.
Check toe-in/Adjust if necessary.Rear upper and lower
knuckle pivots*Lubricate with lithium-soap-based grease.Drive shaft universal
joint*Lubricate with lithium-soap-based grease.Engine mount*
Check for cracks or damage.Front and rear axle boots*Check operation.
Replace if damaged.Stabilizer bushes*
Check for cracks or damage.
ITEM ROUTINEWhichever
comes firstINITIAL EVERY
month136612
km
(mi)320
(200)1,200
(750)2,400
(1,500)2,400
(1,500)4,800
(3,000)
hours 20 75 150 150 300
U2C660.book Page 8 Monday, April 11, 2005 10:29 AM

8-91 1. V-belt cooling duct check hose (Left side)
1. Flexible de contrôle du conduit de refroidissement de la courroie
trapézoïdale (côté gauche)
1. Manguera de comprobación del conducto de enfriamiento de
la correa trapezoidal (Lado izquierdo)
1. V-belt case drain plug
1. Boulon de vidange du carter de la courroie trapézoïdale
1. Tapón de drenaje de la caja de la correa trapezoidal
EBU06411
V-belt cooling duct check hose
If dust or water collects in the V-belt cooling duct
check hose, remove the hose and clean it.
EBU08741
V-belt case drain plug
After riding in water deep enough to allow it to en-
ter the V-belt case, remove this plug to drain the
water from the case.NOTE:_ If water drains from the V-belt case after removing
the plug, have a Yamaha dealer inspect the ATV
as the water may affect other engine parts. _
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10-4
Spark plug:
Type/manufacturer DPR8EA-9 / NGK
Spark plug gap 0.8–0.9 mm
Clutch type: Wet, centrifugal automatic
Transmission:
Primary reduction system V-belt
Secondary reduction system Shaft drive
Secondary reduction ratio 41/21
× 24/18
× 33/9 (9.544)
Transmission type V-belt automatic
Operation Left hand operation
Reverse gear 25/17 (1.471)
Sub transmission ratio low 35/17 (2.058)
high 26/21 (1.238)
Chassis:
Frame type Steel tube frame
Caster angle 5°
Trail 26 mm
Tire:
Ty p e Tu b e l e s s
Size (front) AT25
× 8-12
(rear) AT25 ×10 - 12 Model YFM66FA
U2C660.book Page 4 Monday, April 11, 2005 10:29 AM