Hi I had this problem with my genesis but it wasnt the one way bearing. Inside the engine there is a little pin with a tiny spring. What ws happening was the spring had become too compressed and it wasnt pushing the pin out far enough so it wasnt catching on anything so it couldnt rotate the engine. What you have to do is take the pullstart off (but be carefull it doesnt come uncoiled) take the back plate off and look inside for the little pin and spring. When you have located it just put some tension on the spring so that it opens out more. This will then push the pin out more which will catch and then rotate the engine. Hope this helps.