1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 52Get this manual

1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 52

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4 Inspection Crankshaft bearings and seals: ACheck upper and lower bearings for rustcracks, or wear BCheck upper and lower crankshaft seals for nicks, tearsor wearCRemove metal around lower main seal