Those engines do not have a 302984 high speed jet gasket like the smaller motors because it was thought the amount of fuel bypassing the adjustment orifice would not be enough to prevent a proper adjustment. If you are disturbed by having a less than ¾ of a turn for a proper adjustment, put in the gasket (even though the factory doesn’t think it necessary as long as the motor slows at the leaner setting). . . 😉
