1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 153Get this manual

1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 153

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7 Remove the crankcase coverMeasure the compressed plastigauge to check the main bearing clearanceReplace bearings if clearance is not in specification Checking Connecting Rod Bearing Clearance