1998+ Mercury Mariner 25HP Bigfoot Service Manual, Page 184Get this manual

1998+ Mercury Mariner 25HP Bigfoot Service Manual, Page 184

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CYLINDER HEAD
Free Length "a" Tilt Limit "b"
VALVE SPRING

Compressed Pressure (Installed) Intake Exhaust Tilt Limit (IntakeExhaust) Dirof Winding (IntakeExhaust)