change the oil with in the first 10 hours max. Heat cycles. Start and let run for 10 mins get hot, don't idle go drive around lightly. Verying the throttle. Don't lug the **** out of the engine right after you start it also don't rev the ever living **** out of it. It will start to feel stronger as you go through a couple tanks of gas. Also don't be affraid to give it a little but don't hold it WOT for long until you get maybe half a tank through the engine.. this will help make the top break in properly and last a long time.