2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 134Get this manual

2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 134

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Cylinder head Cam lobe a: Intake: 28.54628.646 mm (1.12391.1278 in) Exhaust: 28.58228.682 mm (1.12531.1292 in) Cam lobe b: Intake and exhaust: 23.9524.05 mm (0.94290.9468 in) 2 Measure the camshaft ru