Kawasaki FS541V-S01-S 1" X 80mm Recoil Vertical Engine 15HPKawasaki FS541V S01 S 1" X 80mm Recoil Vertical Engine 15HP Kawasaki FS Series engines are engineered to be high powered but still environmentally friendly. They feature a compact, 90 degree V twin design with overhead V valve, as well as an internally vented carburetor with a fuel shut off solenoid. There is also a dual element air filter with a plastic blower housing that makes for quieter operation. Replacement for the FH580V S21, FH541V S27,