I just bought a 1988 VIP with an 85 force on it. I got it from the original owner and he has put about 8 hours on it since he bought it. I would like to replace the impeller but have never touched a boat motor. I picked up the impeller at the local marine dealer. Would like to find a break down or a step-by-step on what to do. Does anyone have any information on what needs to be done.