2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 66Get this manual

2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 66

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Control system Engine idle speed: 1,050 50 rmin 3 Turn the throttle stop screw in direction or until the specified engine idle speed is obtainedS6AG3180

Checking the ignition timing