Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 242Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 242

CYLINDER BLOCKCRANKCASE
1Inspect piston wall weardamage, replace if necessary
2Measure the piston at point 0.2 in (5.0 mm) from the bottom, replace if out of specification
a Piston Diameter0.2 in(5.0 mm)

Piston Diameter "a" Piston Size
Standard Oversize-0.010 in(0.50 mm) Oversize -0.020 in(0.50 mm)

Diameter

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