2009 Yamaha F40 Outboard Service Manual, Page 221Get this manual

2009 Yamaha F40 Outboard Service Manual, Page 221

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Power unit Cam lobe height a: Intake: 30.73730.837 mm (1.21011.2141 in) Exhaust: 30.93331.033 mm (1.21781.2218 in) Cam lobe width b: 25.95026.050 mm (1.02171.0256 in) 2 Measure the camshaft runoutRepl