What rod are you talking about sparker, if it is the governor rod you can't mess with that, it needs to be set so that when the motor is not running the throttle butterfly is wide open, then when the motor fires it swings the butterfly closed back to idle. The you have to work out if the governor is actually working. Where the arm enters the crankcase you will need to undo the locking bolt and rotate the shaft fully in the direction that opens the butterfly fully and lock the shaft in that position. It then might involve somebody to watch and see if the governor arm to the closed position as you start the motor. If this doesn't work it looks like the governor may have failed
