Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 124Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 124

Valve Dimensions

Head Diameter Face Width Seat Width Margin Thickness

ROCKER SHAFT

Outside Diameter Inside Diameter of Bore

0.62880.6296 in(15.97115.991 mm) 0.62990.6306 (16.00016.018 mm)

ROCKER ARM

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