Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 157Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 157

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7 Remove crankshaft from block8 Remove balance rod and main bearings Inspection
Diameter (Standard) Taper or Out-of-Round Maximum Limit Diameter 0.010 in(0.25 mm) Oversize Taper or Out-of-Round