Kawasaki FX Series Engines Commercial-Grade Power Kawasaki® FX Series are compact, 90-degree, V-Twin engines which feature hemispherical combustion chambers and overhead V-valve technology that helps ensure low emissions, high power and smooth operation. Other features include: 90-degree V-Twin design with overhead V-valve. High-performance lubrication system. Electronic-spark ignition. Automatic compression release. Twin-barrel, internally vented carburetor with fuel shut-off solenoid. High-efficiency oil cooler (FX801 and FX850 only). Rotating grass screen with metal guard. Heavy-duty, dual-stage, canister air filter. Solenoid-shift electric starter. Cast-iron cylinder liners. Spin-on oil filter. * Note: Engine specifications based upon manufacturer-supplied information. All specifications subject to change at any time without notice or obligation. Engine specifications may vary by model.