1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 121Get this manual
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INTAKEEXHAUST VALVES TORQUE REFNO1 10 11 12 13 14 15 16 QUAN448888168881212521 EXHAUST VALVE INTAKE VALVE SEAT -Valve Spring SEAL-Valve Stem VALVE SPRING-Outer RETAINER-Valve Spring KEY ROCKER ARM SCR