"Model 1B20 9901 Air cooled, 1-cylinder, 4-stroke, direct injection engine Die cast crankcase; pressurized lubrication Recoil start; 3600 RPM 3/4in. x 2 7/16in. shaft; 3/16in. keyway Truck Ship Vertical cylinder Light alloy cylinder head Forged crankcase Model#: 1B20 9901 4. 6 HP Recoil start 3/4 x 2 7/16 shaft 3/16 keyway Die cast crankcase Pressureized lubrication" |