I own a tohatsu MFS9.8AS 4-stroke. The motor
does fine idiling in neutral and acceration in neutral but when engaged in gear
it will not accelerate, acts as if the EFS is activated but oil
light is not on. I recently had the motor
worked on because the valve keepers had came off. the mechanic
said it had over reved at some point. I didn't beleive that then nor do i now. came you advise me what to check for?