Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 239Get this manual

Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 239

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Crankshaft 1 Inspect crankshaft to drive shaft splines for wear(Replace crankshaft, if necessary 2 Check crankshaft for straightnessMaximum runout0.002 in(0.0508mm)Check runout at center main bearing