2012 YAMAHA GRIZZLY 450 torque

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8
EBU21731Owner’s manual and tool kit Be sure to put this owner ’s manual in the plastic
bag and always carry it on the bottom of the seat
as shown. Put the owner ’s tool kit and low-pres-
sure tire gauge under the seat.
The service information included in this manual
and the tools provided in the owner ’s tool kit are in-
tended to assist you in the performance of preven-
tive maintenance and minor repairs. However, additional tools such as a torque wrench may be
necessary to perform certain maintenance work
correctly.
TIPIf you do not have the tools or experience required
for a particular job, have a Yamaha dealer perform
it for you.
1. Owner
’s manual
2. Owner ’s tool kit
3. Low-pressure tire gaugeU1CT61E0.book Page 2 Wednesday, April 20, 2011 6:36 PM

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8To install the panel
1. Place the panel in the original position, and
then install the quick fastener screws.
2. Place the carrier in the original position, and then install the carrier bolts under the fenders.
3. Install the carrier top bolts, and then tighten all bolts to the specified torques. Panel D
To remove the panel
Remove the bolts, and then take the panel off.
1. Quick fastener screw
2. Panel B
1
2
Tightening torques:Carrier bolt (top):34 Nm (3.4 m ·kgf, 25 ft· lbf)
Carrier bolt (under fenders): 7 Nm (0.7 m ·kgf, 5.1 ft· lbf)1. Panel D
2. Bolt
1
2
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2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
3. Measure the spark plug gap with a wire thick- ness gauge and, if necessary, adjust the gap
to specification. To install the spark plug
1. Clean the surface of the spark plug gasket and its mating surface, and then wipe off any
grime from the spark plug threads.
2. Install the spark plug with the spark plug wrench, and then tighten it to the specified
torque.
TIPIf a torque wrench is not available when installing
the spark plug, a good estimate of the correct
torque is 1/4 –1/2 turn past finger tight. However,
the spark plug should be tightened to the specified
torque as soon as possible.3. Install the spark plug cap.
4. Install the panel.
Specified spark plug:
NGK/DR8EA
1. Spark plug gapSpark plug gap:0.6 –0.7 mm (0.024– 0.028 in)
Tightening torque:
Spark plug:18 Nm (1.8 m ·kgf, 13 ft ·lbf)
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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 D and C.
11. Install the engine oil drain bolt and its new
gasket, and then tighten the bolt to the speci-
fied 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)
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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. Check the oil filler bolt gasket for damage, and replace it if necessary.
5. Install the oil filler bolt and its gasket, and then tighten the bolt 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, the final gear oil drain bolt and their gasket to drain the
oil from the final gear case.
1. Final gear oil filler bolt
2. Gasket
3. Final gear oil
4. Correct oil levelTightening torque:Final gear oil filler bolt:22 Nm (2.2 m ·kgf, 16 ft ·lbf)1
2
3
4
1. Engine guard
2. Final gear case guard
3. Bolt
2
3 3
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85. Install the drain bolt and its new gasket, and
then tighten the bolt to the specified torque.
6. Refill with the recommended final gear oil to the brim of the filler hole as shown. NOTICE:
Be sure no foreign material enters the final
gear case.
[ECB00421]
TIPIf the recommended oil is not available, SAE80W-
90 API GL-5 Hypoid gear oil may be used instead.
However, when using this oil, noise from the final
gear case may occur when applying the rear
brake.
1. Final gear oil drain bolt
2. GasketTightening torque: Final gear oil drain bolt:22 Nm (2.2 m ·kgf, 16 ft· lbf)
12
1. Final gear oil filler bolt
2. Gasket
3. Final gear oil
4. Correct oil levelRecommended final gear oil:
See page 10-1.1
2
3
4
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7. Check the oil filler bolt gasket for damage, and
replace it if necessary.
8. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque.
9. Check the final gear case for oil leakage. If oil is leaking, check for the cause.
10. Install the engine guard and the final gear case guard by installing the bolts, and then
tightening them to the specified torques.
EBU23426Differential gear oil The differential gear case must be checked for oil
leakage before each ride. If any leakage is found,
have a Yamaha dealer check and repair the ATV.
In addition, the differential gear oil level must be checked and the oil changed as follows at the in-
tervals specified in the periodic maintenance and
lubrication chart.
To check the differential gear oil level
1. Place the ATV on a level surface.
2. Remove the differential gear oil filler bolt and its gasket, and then check the oil level in the
differential gear case. The oil level should be
at the brim of the filler hole.
Tightening torque:
Final gear oil filler bolt:22 Nm (2.2 m ·kgf, 16 ft ·lbf)
Tightening torques: Engine guard bolt:7 Nm (0.7 m ·kgf, 5.1 ft ·lbf)
Final gear case guard bolt: 7 Nm (0.7 m ·kgf, 5.1 ft ·lbf)
1. Differential gear oil filler bolt
2. Gasket
3. Differential gear oil
4. Correct oil level
1
2
3
4
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83. 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. Check the gasket for damage, and replace it if necessary.
5. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque.
To change the differential gear oil 1. Place the ATV on a level surface.
2. Place an oil pan under the differential gear case to collect the used oil.
3. Remove the differential gear oil filler bolt, the differential gear oil drain bolt and their gasket
to drain the oil from the differential gear case. 4. Install the drain bolt and its new gasket, and
then tighten the bolt to the specified torque.
5. Refill with the recommended differential gear oil to the brim of the filler hole as shown.
NOTICE: Be sure no foreign material en-
ters the differential gear case.
[ECB00411]
Tightening torque: Differential gear oil filler bolt:23 Nm (2.3 m ·kgf, 17 ft· lbf)
1. Differential gear oil drain bolt
2. GasketTightening torque:
Differential gear oil drain bolt:9.8 Nm (0.98 m ·kgf, 7.1 ft· lbf)
12
U1CT61E0.book Page 25 Wednesday, April 20, 2011 6:36 PM