Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 139Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 139

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Condition: The valve seat is centered on valve face but it is too wide Condition: Valve seat is too narrow and it is near va lve margin55801
Valve Seat Cutter Set Use 45 Cutter
Desired Res

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