Volfy, This engine is a G23 variant, came out of a trimmer called tanaka, I think I spelled it right. The photo is the motor after Peter Faith of wackerengines.com did some work on it. I needed a left hand thread hub made for it. I know, I know. I've heard all about the problems that come with a left hand thread hub. Got it under control..lol..I hope. Hope to get it running soon.