I had a Agri-Fab mow-n-vac for 22 years with a Briggs & Stratton engine on it with no problems. It was heavily used. A year and a half ago, I got a new one, also with a Briggs & Stratton. The crankshaft broke. It has a two year warranty on the engine. They denied the claim by saying that the attachment was loose. I had to use wrenches to take the attached blower from the crankshaft. It was absolutely NOT loose. The year and a half old Briggs had a smaller crankshaft on their newer engine. Junk and they won't even stand behind their warranty!!! User's recommendation: AVOID BRIGGS & STRATTON !!!