The reviews I read on the craftsman leaf blower mentioned the tubes blowing off. Because I had a blower years ago with that design I was familiar with it. Just make sure you rotate the tubes until they snap into place. I had trouble starting until I read the directions. Following the directions it started right up and has several times since. Power is fine and machine is quiet especially at idle. I almost did not buy this because of the reviews on the problems starting the engine. I can not stress enough just follow the directions and this won't be an issue.