1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 187Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 187

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7 Uneven Wear: Uneven we ar could be caused by bent connecting rod Cleaning and Inspection
Inspect cylinder block and crankcase cover for cracks or fractures
heck gasket surfaces for nicks