Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 132Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 132

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Adjusting Valve Clearance
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2 Insert the feeler gauge (specification size) between the valve stem and valve adjusting screw
aBolts (7)

2 Remove flywheel co