Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 70Get this manual
INSP ADJ CONTROL SYSTEMPOWER UNIT
d 4Adjust:
9Idling speed
Adjustment steps: Turn the throttle stop screw in direction or until the specified idling speed is attainedTurning in Idling speed increasesTurning out Idling speed decreasesStart-in-gear protection adjustment 1Check: 9Start-in-gear protection operation Incorrect Adjust2Adjust: 9Start-in-gear protection wire 12 Adjustment steps: Set the shift lever in neutral8 Loosen the locknut or 28 Adjust the start-in-gear protection wire adjuster so that the marking of lever can align with the marking of the starter case8 Tighten the locknut or 1