A 21.5-hp (16.0-kW) V-twin engine with 44.3-cu in. (726-cc) displacement provides plenty of power and torque to handle tough mulching, mowing, and bagging conditions:
V-twin cylinder design for greater torque, lower vibration, and improved sound quality Full-pressure lubrication and cast-iron sleeves to extend engine life Engine model FR651V Rear engine guard protects the engine from damage