Just heat up the engine. Let it idle around 100c for the first tank. Then drive it slowly for couple of tanks with a cover on the head so that the engine won't cool down. As long as you run it rich and manage to keep it between 100-120c during break in you can hardly fail. After the pinch is gone and you feel more confident you can lean it for more performance. Always listen to engine sound and try to have smoke coming out of the pipe. Hope this helps
