Re: Yamaha 40 HP carb settings
2002 yamaha 4 stroke, 3 cyl, 3 carbs, cleaned carbs engine starts and runs well at idle, will not go over 2000 rpm, stalls at about 2000. everything looks ok inside carbs, plugs are new. Looking for suggestions. Tried boring out low speed jets little bit and that seemed to help starting and low speed, then tried boring out main jets and that was a mistake. waiting for new, stock jets. Fuel has some ethanol mix, owner has added something supposed to compensate for the ethanol.