Yamaha WaveRunner GP1300R Supplementary Service Manual page 206

POWR
CRANKSHAFT
5. Check:
• Bearings
Damage/pitting → Replace.
NOTE:
• Before checking bearings, thoroughly clean
them.
• Immediately after checking the bearings,
lubricate them to prevent rust.
6. Check:
• Oil seals
Damage/wear → Replace.
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