Kawasaki FX730V-FS36-S 23.5HP V-Twin Vertical Shaft Engine Electric Start

Kawasaki FX730V-FS36-S 23.5HP V-Twin Vertical Shaft Engine Electric Start

A potent blend of muscle and fuel management combines for the kind of performance that won’t hold you back in the powerful yet practical Kawasaki FX730V EFI engine. Our Electronic Fuel Injection technology constantly manages fuel consumption to match the load at hand, keeping blade-tip and ground speed steady while you cut through tough terrain with efficiency.

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.

• 90° V-twin: This 726cc power plant features a 90° V-Twin configuration designed for optimal primary balance and mechanical harmony. By aligning the cylinders at a perfect 90-degree angle, Kawasaki achieves a compact engine footprint while maximizing airflow around both cylinder heads. This layout ensures consistent combustion timing and reduces stress on the crankshaft, extending the service life of the engine under professional duty cycles.

• Integrated Electronic Throttle Control: The FX730V-FS36-S features an Integrated Electronic Throttle Control system that replaces traditional springs and linkages with digital sensors. This technology drastically reduces RPM "droop" by detecting crankshaft load variations and responding with micro-second adjustments. The result is optimized fuel consumption, reduced internal engine stress, and a perfectly flat power curve across the entire 726cc displacement range.

• Pressurized lubrication system: The FX730V is engineered with a full-pressure lubrication system featuring a high-efficiency, automotive-style spin-on filter. A dedicated oil pump maintains a consistent protective film across the crankshaft and rod journals, ensuring mechanical integrity under high-load conditions. This pressurized flow also acts as a vital cooling mechanism, pulling heat away from the 726cc cylinder heads and into the sump to maintain optimal operating temperatures.

• Electronic ignition with variable spark timing: The FX730V utilizes a solid-state electronic ignition with a dynamic variable timing curve. By adjusting the ignition point in real-time to match the 726cc engine's speed and load, the system ensures complete fuel combustion and reduced exhaust temperatures. This digital precision eliminates the maintenance associated with mechanical systems while providing a more stable and responsive power band for professional applications.

• Automatic compression release: The FX730V is engineered with a centrifugal automatic compression release designed to optimize starting torque. By reducing the effective compression ratio during low-RPM cranking, the system minimizes the amperage draw required from the battery and lowers mechanical stress on the starter drive. Once the engine fires and reaches operating RPM, the mechanism automatically disengages to allow for full 726cc power and maximum combustion efficiency.

• Sequential multi-port fuel injection: The FX730V-FS36-S features a sequential fuel injection architecture managed by a high-speed digital ECU. By synchronizing fuel delivery with the intake stroke of each individual cylinder, the system optimizes the air-fuel ratio in real-time. This eliminates fuel puddling in the manifold, prevents "hot-restart" issues, and ensures the 726cc V-Twin maintains peak volumetric efficiency across the entire power band, regardless of humidity or air temperature.

• Compact electronic control unit: Power your workday with the intelligence of a high-performance Electronic Control Unit. This compact digital brain constantly monitors atmospheric and engine data to optimize fuel delivery and throttle response in real-time. By managing everything from ignition timing to load sensing, it ensures your 23.5HP engine is always running at peak efficiency, providing a "turn-key" experience that eliminates the tuning and maintenance of traditional engines.

• Proven open loop design: Get the benefits of digital fuel injection without the fragility of extra sensors. Our proven open-loop design utilizes high-resolution, factory-calibrated fuel maps to deliver 23.5HP of consistent power. By eliminating the need for delicate oxygen sensors that can fail in dusty conditions, this system provides the instant starts and fuel efficiency of EFI with the

• Electronic altitude compensation: The FX730V utilizes an onboard atmospheric pressure sensor to provide real-time altitude compensation. By communicating directly with the digital ECU, the system recalibrates the air-fuel ratio to prevent the "rich" running conditions typically caused by high-altitude oxygen levels. This ensures the 726cc V-Twin maintains clean combustion, consistent RPM stability, and full power delivery across all geographic terrains.

• High pressure fuel injection technology with electronic fuel pump: Experience "first-turn" starting and unwavering power with high-pressure fuel injection technology. Backed by a dedicated electronic fuel pump, this system maintains constant, high-velocity fuel pressure even under the most demanding commercial loads. This ensures your 23.5HP engine responds instantly to the throttle and provides smooth, reliable performance on steep inclines where gravity-fed systems often fail.

• Cast iron cylinder liners: Engineered for maximum mechanical durability, the FX730V utilizes precision-machined cast-iron liners. These sleeves offer superior dimensional stability, preventing cylinder "warping" or "ovaling" during the extended high-heat duty cycles common in commercial landscaping. The specialized surface of the iron also improves oil retention and heat dissipation, significantly reducing internal friction within the 726cc V-Twin.