Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 136Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 136

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Camshaft 1 Inspect the camshaft for pittingheat discolor
1.45671.4577 in(37.00037.025 mm)
Exhaust Intake
Camshaft Bearing Diameter "b"
1.45411.4549 in(36.93536.955 mm)