Kawasaki FS651V-LS00-S 21HP V-Twin Vertical Shaft Engine Electric Start

Kawasaki FS651V-LS00-S 21HP V-Twin Vertical Shaft Engine Electric Start

When reliable power and smooth performance come together, you get the forced-air-cooled V-twin 4-cycle Kawasaki FS651V engine, complete with rotating metal grass chopper screen, dual-element reinforced air filtration system, and cast-iron cylinder liners for durability you can always depend on. Compactly designed for zero-turn mowers and lawn tractors.

Features:

• Engine performance, by the numbers: From power and torque numbers to engine features and more, the following is here to help communicate engine performance details and capabilities. Be sure to consider these specs to help ensure the engine you’re choosing is a match to your mowing needs.

• Overhead V-valve: A high-efficiency cylinder head configuration that optimizes the combustion process and maximizes airflow. This allows the 21HP engine to deliver higher torque-to-fuel ratios while maintaining cooler operating temperatures during long workdays.

• Integrated clean out ports: Strategically placed maintenance windows built into the engine shroud. These allow operators to quickly blow out trapped grass and debris from the cooling fins using compressed air, preventing thermal buildup without the need for shroud disassembly.

• 90° V-twin: The premier engine layout for achieving perfect primary balance. The 90-degree configuration naturally counteracts internal vibrations, providing a smoother ride that increases operator comfort and extends the lifespan of the mower's chassis.

• Pressurized lubrication system: An automotive-grade oiling system featuring a high-volume pump and a spin-on filter. It ensures a consistent, pressurized stream of oil is delivered to all critical internal bearings, providing total engine protection even when mowing on steep inclines.

• Electronic spark ignition: A digital, solid-state ignition system that provides high-energy timing for rapid, reliable starts. It ensures the 726cc engine runs with consistent power and smooth idling across the entire RPM range, regardless of weather conditions.

• Automatic compression release: A mechanical system that reduces cylinder pressure during the start-up phase. This allows the high-displacement engine to spin over effortlessly, significantly reducing the strain on the battery and the starter motor.

• Internally vented carburetor with fuel shut-off solenoid: A precision-tuned fuel system that maintains an optimal air-fuel ratio even as the air filter captures dust. The integrated solenoid provides a clean engine shutdown, preventing "after-fire" backfiring when the ignition is turned off.

• Rotating metal grass chopper screen: A rugged, debris-shredding intake guard. This rotating metal screen pulverizes grass clippings and leaves before they can enter the cooling system, ensuring the engine stays at a safe operating temperature in messy field conditions.

• Dual element air filtration system with reinforced primary filter: An industrial-strength filtration powerhouse featuring a high-capacity pleated paper element and a foam pre-cleaner. The reinforced design ensures the filter holds its shape under high suction, keeping the combustion chamber free of abrasive dust.

• Cast-iron cylinder liners: Durable, high-density iron sleeves that provide a rugged, wear-resistant surface for the pistons. This premium feature ensures the engine maintains perfect compression and structural integrity through years of heavy commercial use.