Briggs newest and dumbest idea. Plastic cam gears used in a lot of different size engines. I am in lawn care business with all Briggs on my equipment. My 22 hp zero turn burns oil on one of cylinder. 400 hours it's literally a piece of boat anchor. Don't recommend Briggs v twins.... 8.75 pressure washer motors broken plastic camshaft. Junk engines. Extremely low hours . Buy Kohler, Honda or Kawasaki engines. Briggs has lost my business due to plastic junk engine internals. User's recommendation: buy Kohler, Honda or Kawasaki.