Yamaha VMX12H Supplementary Service Manual page 290

SHAFT DRIVE
TroubleshootingChart
When basic conditions
"a"
Elevate and spin the front wheel. Feel
for wheel bearing damage.
Check the rear wheel. Feel for bearing
damage.
Remove the rear wheel. Check for wheel
bearing damage.
the drive shaft components.
6-51
and "b" above exist, check the following points:
Replace the wheel bearing.
(Refer to "CHAPTER
Rear wheel bearings and shaft drive
bearings probably not damaged. Repeat
test or remove individual components.
Replace the rear wheel bearing.
(Refer 5. REAR WHEEL"
section).
5. FRONT