2004 YAMAHA GRIZZLY 660 oil level

Tire wear limit......................................5-31
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............ 8-15
Engine oil and oil filter cartridge ......... 8-33
Final gear oil ....................................... 8-47
Differential gear oil.............................. 8-51
Cooling system ................................... 8-57
Changing the coolant.......................... 8-61
Axle boots ........................................... 8-69
Spark plug inspection ......................... 8-71
Air filter element cleaning ................... 8-77
Carburetor adjustment ........................ 8-85
Idle speed adjustment ........................ 8-87
Valve clearance adjustment ............... 8-89
Throttle lever adjustment .................... 8-89
Front brake pad check ........................ 8-91
Rear brake pad inspection.................. 8-91
Inspecting the brake fluid level ........... 8-93
Brake fluid replacement ...................... 8-97
Front brake lever free play.................. 8-99
Rear brake lever and pedal
adjustment ...................................... 8-101
Adjusting the rear brake light
switch ............................................. 8-105
Cable inspection and lubrication....... 8-107
8
EE.book Page 2 Tuesday, April 1, 2003 12:23 PM

5-1
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
BrakesCheck operation, free play, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-7–5-9,
8-91–8-105
FuelCheck fuel level.
Fill with fuel if necessary.5-11–5-13
Engine oilCheck oil level.
Fill with oil if necessary.5-15,
8-33–8-45
Coolant reservoirCheck coolant level.
Fill with coolant if necessary.8-57–8-67
Final gear oil/
Differential gear oilCheck for leakage.5-17–5-19,
8-47–8-55
ThrottleCheck for proper throttle cable operation. 5-21, 8-89
Wheels and tiresCheck tire pressure, wear and damage.5-25–5-31,
8-113–8-115
Fittings and fastenersCheck all fittings and fasteners. 5-21
Lights and switchesCheck for proper operation. 5-23, 8-127–8-131
Axle bootsCheck for damage. 8-69
EE.book Page 1 Tuesday, April 1, 2003 12:23 PM

5-15
EBU10842
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See pages 8-33–8-45.)CAUTION:_

In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of “CD”
or oils of a higher quality than specified. In
addition, do not use oils labeled “ENERGY
CONSERVING II” or higher.


Make sure that no foreign material enters
the crankcase.
_
Recommended engine oil type and quantity:
See page 10-2.
EE.book Page 15 Tuesday, April 1, 2003 12:23 PM

5-17
EBU00493
Final gear oil
Make sure the final gear oil is at the specified level.
Add oil as necessary. (See pages 8-47–8-49 for
details.)
If desired, an SAE 80W90 hypoid gear oil may be
used for all conditions.NOTE:GL-4 is a quality and additive rating, GL-5 or GL-6
rated hypoid gear oils may also be used.
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
EE.book Page 17 Tuesday, April 1, 2003 12:23 PM

5-19
EBU00678
Differential gear oil
Make sure the differential gear oil is at the speci-
fied level. Add oil as necessary. (See pages 8-53–
8-55 for details.)
EBU13160
Coolant
Check the coolant level in the coolant reservoir
when the engine is cold. (The coolant level will
vary with engine temperature.) The coolant level is
satisfactory if it is between the minimum and max-
imum level marks on the coolant reservoir. If the
coolant level is at or below the minimum level
mark, add distilled water to bring the level up to the
maximum level mark. Change the coolant every
two years. (See pages 8-57–8-67 for details.)CAUTION:_ Hard water or salt water is harmful to the en-
gine. You may use soft water if you cannot get
distilled water. _
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
EE.book Page 19 Tuesday, April 1, 2003 12:23 PM

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEWhichever
comes firstINITIAL EVERY
km 320 1,200 2,400 2,400 4,800
hours 20 75 150 150 300
Valves*Check valve clearance.
Adjust if necessary.
Cooling systemCheck coolant leakage.
Repair if necessary.
Replace coolant every 24 months.Spark plugCheck condition.
Adjust gap and clean.
Replace if necessary.Air filter elementClean.
Replace if necessary.Every 20–40 hours
(More often in wet or dusty areas.)
Carburetor*Check starter (choke) operation.
Adjust engine idling speed.Crankcase breather
system*Check breather hose for cracks or damage.
Replace if necessary.Exhaust system*Check for leakage.
Tighten if necessary.
Replace gasket(s) if necessary.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 8-8.
Correct if necessary.Rear brake*Check operation/fluid leakage/see NOTE page 8-8.
Correct if necessary.V-belt*Check operation.
Check for cracks or damage.Wheels*Check balance/damage/runout.
Repair if necessary.EE.book Page 7 Tuesday, April 1, 2003 12:23 PM

8-8
* It is recommended that these items be serviced by a Yamaha dealer.
** Lithium-soap-based greaseNOTE:Recommended brake fluid: DOT 4
Brake fluid replacement:
1. When disassembling the master cylinder or caliper cylinder, replace the brake fluid. Normally check
the brake fluid level and add fluid as required.
2. On the inner parts of the master cylinder and caliper cylinder, replace the oil seals every two years.
3. Replace the brake hoses every four years, or if cracked or damaged.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.**Drive shaft universal
joint*Lubricate.**Engine mount*
Check for cracks or damage.Front and rear axle boots*Check operation.
Replace if damaged.Stabilizer bushes*
Check for cracks or damage.Fittings and fasteners*Check all chassis fittings and fasteners.
Correct if necessary.Lights and switches*Check operation.
Adjust headlight beam.
ITEM ROUTINEWhichever
comes firstINITIAL EVERY
km 320 1,200 2,400 2,400 4,800
hours 20 75 150 150 300
EE.book Page 8 Tuesday, April 1, 2003 12:23 PM

8-33 1. Engine oil filler cap
2. Dipstick
1. Bouchon de remplissage d’huile de moteur
2. Jauge
1. Tapa de relleno de aceite de motor
2. Varilla
EBU10991
Engine oil and oil filter cartridge
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter cartridge replaced at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
To check the engine oil level
1. Remove panel F. (See page 8-31 for panel
removal and installation procedures.)
2. Place the ATV on a level surface.
3. Start the engine, warm it up for several min-
utes, and then turn it off.
4. Wait a few minutes until the oil settles.
5. Remove the engine oil filler cap and wipe off
the dipstick with a clean rag.
EE.book Page 33 Tuesday, April 1, 2003 12:23 PM