Kawasaki FX921V-HS04-S 1-1/8" x 4-9/3" 31HP EngineFX921V 31 HP Vertical Engine Features: Overhead V valve High Performance pressurized lubrication Automatic compression release High efficiency oil cooler Dual stage canister air filter Metal engine cover Twin barrel, internally vented carburetor with fuel shut off solenoid 90 Degree V Twin Electric spark ignition Three valves per cylinder Rotating grass screen Heavy duty shift type starter Cast iron cylinder liners