2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 315Get this manual
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2SERVICE DATA (EXCERPT) Item Valve clearance IN Valve clearance EX Data 0.15 0.25 mm 0.0059 0.0098 in 0.25 0.35 mm 0.0098 0.0138 in 6AG00NA 6AG40NA 6AG106AG506AG202-14 6AG602-14 6AG702-14 6AG302-14 6A