Kawasaki FX651V-S00 22.0HP 726cc V-Twin Engine – 1-1/8in Shaft, Electric Start
Kawasaki FX651V-S00 generates 22.0 horsepower. A 726cc block backs up the output, and torque peaks at 53.3 Nm. A 3-year warranty backs the build. The 1-1/8in shaft fits standard mounts.
- Rated for 22.0 horsepower output
- The 726cc block handles the load
- Torque tops out at 53.3 Nm
- A 1-1/8in horizontal shaft, standard mount
- Key-start ignition, no yanking required
Description
The Kawasaki FX651V-S00 vertical shaft engine solves commercial turf repower challenges through high-displacement V-twin power and continuous high-load stamina. Commercial zero-turn mowers and stand-on units operating on rough terrain suffer power loss when cutting thick wet turf. This 726cc 22.0HP engine incorporates a heavy-duty 1-1/8-inch vertical shaft, full-pressure lubrication, and an advanced overhead valve cylinder layout that keeps head temperatures stable under heavy cutting decks.
An oversized cast-iron cylinder sleeve protects internal tolerances against bore wear, keeping oil consumption low across hundreds of operating hours. The 1-1/8-inch vertical shaft handles electric PTO clutch engagement and dual hydrostatic belt tension without crankshaft deflection. The commercial-grade carburetor meters fuel with precision across varying load demands, preventing engine hesitation when mowing decks encounter thick, wet turf patches.
Engine Architecture of Kawasaki FX651V-S00
- 726cc 22.0HP Commercial OHV V-Twin: Generates high rotational torque to power 54-inch and 60-inch commercial cutting decks.
- 1-1/8-Inch Keyed Vertical PTO Shaft: Oversized commercial diameter matches heavy electric blade clutches and transmission drive pulleys.
- Full-Pressure Oil Lube with Spin-On Filter: Pumps filtered oil continuously to crankshaft journal inserts and rod bearings.
- 12V Electric Key Starting Motor: Spins the flywheel ring gear with key activation to eliminate manual starting effort.
- Durable Cast-Iron Cylinder Sleeves: Resists bore wear from abrasive dirt, extending engine life in severe commercial service.
- Multi-Stage Commercial Canister Air Cleaner: Traps fine dust particles across two media layers to preserve cylinder wall compression.
Commercial Utility Stamina & Lifespan
Engineered for continuous commercial operation where equipment failure halts company revenue, this platform delivers reliable mechanical output.
- A rigid aluminum crankcase casting and cast-iron cylinder liners maintain shaft alignment under severe belt drive tension.
- High combustion efficiency lowers fuel burn per mowing shift, cutting daily operating expenses across commercial fleets.
- Landscape maintenance contractors and estate groundskeepers gain dependable power for high-hour mowing equipment.
Chassis Integration & Industrial Fitment
Weighing 85 pounds dry with an industry-standard vertical base pattern and 1-1/8-inch shaft, this unit drops directly onto commercial zero-turn mowers, stand-on units, and wide-area turf equipment without deck drilling.
Commercial Warranty & Field Maintenance
- Kawasaki backs this FX Series engine with 3-Year commercial warranty coverage on all core components.
Change oil after the initial 20 operating hours, then maintain 100-hour service intervals using 10W-30 oil and a new filter. Tap clean the air filter element weekly on dusty jobsites, and check the spark plug gap at 0.030 inches. Order the Kawasaki FX651V-S00 vertical shaft engine from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.
Kawasaki FX651V-S00 Commercial Technical Specs
| Brand | Kawasaki Commercial |
| Full Model Code | FX651V-S00 |
| Displacement | 726 cc |
| Engine Type | Vertical Shaft, V-Twin 90°, OHV |
| Maximum Output | 16.4 kW (22.0 HP) @ 3600 RPM |
| Maximum Torque | 53.3 Nm (39.3 lbs-ft) @ 2200 RPM |
| Air Filtration | Multi-Stage Heavy Duty Canister Air Filter |
| Start System | Electric Start |
| Shaft Specification | 1-1/8" x 108.8mm Vertical Shaft |
| Charging System | 15 Amp Alternator |
| Standard Warranty | 3 Years Commercial |
| Primary Application | Professional Zero-Turn & Stand-on Mowers |












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