The Kawasaki FX781A-(A)S00-S is a 0.85 V-twin 90° air-cooled 4-stroke internal combustion small gasoline engine with vertical shaft. The Kawasaki FX751V has a V-twin design with vertical PTO shaft. The motor uses overhead V-valves; spherical combustion chamber; cast-iron cylinder liners; metal engine cover with integrated cleanout ports; rotating metal grass chopper screen.