Yamaha GRIZZLY Ultramatic YFM660FP, Service Manual

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7 - 3
DRIV
TROUBLESHOOTING
Troubleshooting chart
When basic condition “a” and “b” exist, check the following points:
Elevate and spin both wheels. Feel for
wheel bearing damage.
YES
Replace the wheel bearing.
(Refer to “STEERING SYSTEM” and
“REAR KNUCKLE AND STABILIZER” in
CHAPTER 8.)
NO
Check the wheel nuts and hub nuts for
tightness.
NO
Torque to specification.
(Refer to “FRONT WHEELS AND BRAKE
DISCS” and “REAR WHEELS AND
BRAKE DISC” in CHAPTER 8.)
YES
Check the front constant velocity joint. Feel
for bearing damage.
NO
Constant velocity joint bearings and differ-
ential gear bearings are probably not dam-
aged. Repeat the test or remove the
individual components.
YES
Check the rear brake adjustment.
NO
Adjust per instructions.
(Refer to “ADJUSTING THE REAR
BRAKE” in CHAPTER 3.)
YES
Check the rear constant velocity joint. Feel
for bearing damage.
NO
Constant velocity joint bearings and final
drive gear bearings are probably not dam-
aged. Repeat the test or remove the indi-
vidual components.
YES
Remove the drive shaft components.