Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 244Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 244

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CYLINDER BLOCKCRANKCA SE
0.0018 in(0 .046 mm)

Crankcase and Bearings
1 Measure crankshaft main bearing clearance using the test below, replace the bearings as set if out of sp