2010 YAMAHA GRIZZLY 450 oil

8-6
8
4*Brake hosesCheck for cracks or other damage, and replace if
necessary.√√√√
Replace. Every 4 years
5*WheelsCheck runout and for damage, and replace if nec-
essary.√ √√√
6*TiresCheck tread depth and for damage, and replace if
necessary.
Check air pressure and balance, and correct if
necessary.√ √√√
7*Wheel hub bearingsCheck for looseness or damage, and replace if
necessary.√ √√√
8*V- b e l tCheck for wear, cracks or other damage, and re-
place if necessary.√ √√√
9*Drive shaft univer-
sal jointLubricate with lithium-soap-based grease.√√√
10*Chassis fastenersMake sure that all nuts, bolts, and screws are
properly tightened.√√√√√
11*Shock absorber as-
sembliesCheck operation and correct if necessary.
Check for oil leakage and replace if necessary.√√√
12*Stabilizer bushesCheck for cracks or other damage, and replace if
necessary.√√√
13*Rear knuckle pivotsLubricate with lithium-soap-based grease.√√√
14*Steering shaftLubricate with lithium-soap-based grease.√√√
15*Steering systemCheck operation and repair or replace if damaged.
Check toe-in and adjust if necessary.√√√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320U37S61E0.book Page 6 Tuesday, June 2, 2009 10:33 AM

8-7
8
16*Engine mountCheck for cracks or other damage, and replace if
necessary.√√√
17*Axle bootsCheck for cracks or other damage, and replace if
necessary.√√√√√
18 Engine oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√ √√√
19Engine oil filter car-
tridgeReplace.√√√
20*Engine oil strainerClean.√√√
21 Differential gear oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√√
22 Final gear oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√√√
23 Cooling systemCheck coolant level and ATV for coolant leakage,
and correct if necessary.√√√√√
Replace coolant. Every 2 years
24*Moving parts and
cablesLubricate.√√√√
25*Drive select lever
safety system cableCheck operation and adjust or replace if neces-
sary.√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320U37S61E0.book Page 7 Tuesday, June 2, 2009 10:33 AM

8-17
8
EBU23328Engine 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 spec-
ified in the periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the ATV on a level surface.
2. Remove panel F. (See page 8-9.)
3. Check the engine oil level on a cold engine.TIPIf the engine was started before checking the oil
level, be sure to warm up the engine sufficiently,
and then wait at least ten minutes until the oil set-
tles for an accurate reading.4. Remove the engine oil filler cap, and then
wipe the engine oil dipstick off with a clean
rag.5. Insert the dipstick into the filler hole (without
screwing it in), and then remove it again to
check the oil level.
TIPThe engine oil should be between the minimum
and maximum level marks.1. Engine oil filler cap
U37S61E0.book Page 17 Tuesday, June 2, 2009 10:33 AM

8-18
86. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
NOTICE: Be sure the engine oil is at the
correct level, otherwise engine damage
may result.
[ECB00851]
7. Insert the dipstick into the oil filler hole, and
then tighten the engine oil filler cap.
8. Install the panel.To change the engine oil (with or without oil fil-
ter cartridge replacement)
1. Place the ATV on a level surface.
2. Remove panel F. (See page 8-9.)
3. Start the engine, warm it up for several min-
utes, and then turn it off.
4. Place an oil pan under the engine to collect
the used oil.
5. Remove the engine oil filler cap, and then re-
move the engine oil drain bolt to drain the oil
from the crankcase.1. Engine oil dipstick
2. Maximum level mark
3. Minimum level mark
1. Engine oil drain bolt
U37S61E0.book Page 18 Tuesday, June 2, 2009 10:33 AM

8-19
8
TIPSkip steps 6–10 if the oil filter cartridge is not being
replaced.6. Remove panels D and E. (See page 8-9.)
7. Remove the oil filter cartridge with an oil filter
wrench.
TIPAn oil filter wrench is available at a nearby Yamaha
dealer.8. Apply a thin coat of engine oil to the O-ring of
the new oil filter cartridge.
1. Oil filter cartridge
1. Oil filter wrench
U37S61E0.book Page 19 Tuesday, June 2, 2009 10:33 AM

8-20
8
TIPMake sure that the O-ring is properly seated.9. Install the new oil filter cartridge with an oil fil-
ter wrench, and then tighten it to the specified
torque with a torque wrench.10. Install panels E and D.
11. Install the engine oil drain bolt, and then tight-
en it to the specified torque.1. O-ring
1. Torque wrenchTightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf, 12 ft·lbf)
Tightening torque:
Engine oil drain bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
U37S61E0.book Page 20 Tuesday, June 2, 2009 10:33 AM

8-21
8 12. Refill with the specified amount of the recom-
mended engine oil, and then install and tight-
en the engine oil filler cap.
TIPBe sure to wipe off spilled oil on any parts after the
engine and exhaust system have cooled down.NOTICEECB00300
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 CONSERV-
ING II” or higher.

Make sure that no foreign material enters the
crankcase.13. Start the engine, and then let it idle for several
minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
14. Turn the engine off, wait at least ten minutes,
and then check the oil level and correct it if
necessary.
15. Install panel F.EBU28573Final gear oil The final gear case must be checked for oil leak-
age before each ride. If any leakage is found, have
a Yamaha dealer check and repair the ATV. In ad-
dition, the final gear oil level must be checked and
the oil changed as follows at the intervals specified
in the periodic maintenance and lubrication chart.
To check the final gear oil level
1. Place the ATV on a level surface.TIPThe final gear oil level must be checked when the
engine is cold.
Recommended oil:
See page 10-1.
Oil quantity:
Without oil filter cartridge replacement:
2.30 L (2.43 US qt, 2.02 Imp.qt)
With oil filter cartridge replacement:
2.40 L (2.54 US qt, 2.11 Imp.qt)
U37S61E0.book Page 21 Tuesday, June 2, 2009 10:33 AM

8-22
82. Remove the final gear oil filler bolt, and then
check the oil level in the final gear case. The
oil level should be at the brim of the filler hole.
3. If the oil is below the brim of the filler hole, add
sufficient oil of the recommended type to raise
it to the correct level.
4. Install the oil filler bolt, and then tighten it to the
specified torque.To change the final gear oil
1. Place the ATV on a level surface.
2. Remove the engine guard and the final gear
case guard by removing the bolts.
3. Place an oil pan under the final gear case to
collect the used oil.
4. Remove the final gear oil filler bolt and the fi-
nal gear oil drain bolt to drain the oil from the
final gear case.
1. Final gear oil filler bolt
2. Correct oil level
3. Final gear oilTightening torque:
Final gear oil filler bolt:
24 Nm (2.4 m·kgf, 17 ft·lbf)
1. Engine guard
2. Final gear case guard
3. Bolt
U37S61E0.book Page 22 Tuesday, June 2, 2009 10:33 AM