Yamaha VMX12H Supplementary Service Manual page 284

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5. Remove:
Rubber boot
*Bolts (muffler)
6. Remove:
Push down the muffler.
7. Remove:
Final gear assembly
INSPECTION
1. Wash the bearings in a solvent.
2.
Inspect:
Bearings
Replace.
seals
Damage Replace.
3. Inspect:
Rubber boot
Damage Replace.