2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 87Get this manual
Periodic checks and adjustments
Checking the ignition timing
1Start the engine and warm it up for minutesAttach the special service tool to hightension cord #1 CD, and then check the engine idle speed
Checking the engine idle speed
1Start the engine and warm it up for minutesAttach the special service tool to hightension cord #1 CD, and then check the engine idle speedAdjust if out of specification2
Inductive self-powered tachometer: YU-08036-B Digital tachometer: 90890-06760
Inductive self-powered tachometer: YU-08036-B Digital tachometer: 90890-06760