i know this is going to sound stupid but where is the oil drain plug on my 1985 225dx. and dont say on the bottom of the motor cause its not there. i've checked the bottom of the case and there is not a drain plug. so someone, anyone, where is it. how do i drain my oil. i know where the oil filter is located and i know where the strainer is but there should be a drain plug somewhere. thanks Kirby