Kawasaki FS481V-S01-S Engine 1" x 3-5-32" Shaft Vertical Recoil Start No Muffler 14.5HPKawasaki FS481V S01 S Engine 1" x 3 5 32" Shaft Vertical Recoil Start No Muffler 14. 5HP Order Muffler Below If Needed. You May Use Your Old Muffler Also. This is a brand new, in the box engine direct from Kawasaki Motors Corporation, not a manufacturer overrun. 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