1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 240Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 240

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GEAR HOUSING
1 Inspect drive shaft bushing and bearing surface to determine condition of corresponding upper drive shaft bushing and lower drive shaft needle bearingIf drive shaft surface is rus