Kawasaki FX481V-S01-S 14.5HP 603cc V-Twin Engine – 1in Shaft, Electric Start
Kawasaki FX481V-S01-S packs 14.5 horsepower. A 603cc block backs up the output, and torque peaks at 38.2 Nm. The 1in shaft fits standard mounts. It's built for daily professional mowing operations.
- Runs at 14.5 horsepower under normal use
- Displacement comes in at 603cc
- Peak torque reaches 38.2 Newton-meters
- Shaft measures 1in, horizontal configuration
- Key-start ignition, no yanking required
Description
Driving commercial 36-inch and 48-inch walk-behind decks, the Kawasaki FX481V-S01-S vertical shaft engine delivers continuous 14.5 horsepower across punishing landscaping work shifts. Heavy turf mowing and commercial grass bagging place intense continuous load resistance on small engines, which causes overheating and thrown connecting rods on consumer powerheads. This 603cc commercial FX series V-twin engine features high-capacity cooling fins, an internally balanced rotating assembly, and an electric starter engineered to mobilize mowing crews without delay.
Dual cylinder cast-iron sleeves protect internal tolerances against bore wear, keeping oil consumption low across hundreds of operating hours. The 1-inch vertical shaft handles electric PTO clutch engagement and dual hydrostatic belt tension without crankshaft deflection. Full-pressure lubrication circulates filtered motor oil directly to high-load rod bearings, ensuring uninterrupted fluid barrier protection during continuous full-throttle operation across steep slopes.
Key Engineering Features of Kawasaki FX481V-S01-S
- 603cc 14.5HP Commercial V-Twin: Delivers 14.5 rated horsepower to drive commercial walk-behind cutting decks and hydrostatic drives.
- 1-Inch Keyed Vertical PTO Shaft: Standard commercial diameter matches electric blade clutches and multi-groove transmission pulleys.
- 12V Electric Key Starting Motor: Spins the flywheel ring gear with key activation to eliminate manual starting effort.
- Full-Pressure Oil Lube with Spin-On Filter: Pumps filtered oil continuously to crankshaft journal inserts and rod bearings.
- Durable Cast-Iron Cylinder Sleeves: Resists bore wear from abrasive dirt, extending engine life in severe commercial service.
- Multi-Stage Heavy-Duty Canister Air Cleaner: Traps fine dust particles across two media layers to preserve cylinder wall compression.
- Metal Grass Chopper Screen: Prevents grass clippings and debris from packing into cooling fins and causing thermal lockup.
Engineering Integrity & Operational Economy
Engineered for continuous commercial operation where equipment failure halts company revenue, this platform sets the standard for repower efficiency.
- Heavy cast iron cylinder lining and thick crankcase casting prevent thermal distortion during midsummer heat waves.
- Low oil consumption rates and 100-hour oil service intervals keep machines working in the field rather than sitting on shop lift racks.
- Commercial lawn maintenance contractors and golf course crews gain dependable power for high-hour machinery.
Target Machinery & Drop-In Fitment
Weighing 80 pounds dry with an industry-standard vertical mounting base and 1-inch shaft, this motor powers commercial walk-behind mowers, stand-on turf equipment, and compact zero-turn units without deck drilling.
Factory Warranty Terms & Routine Upkeep
- Commercial turf and municipal operators receive 3-Year limited factory warranty backing.
- Consumer operations receive 3-Year standard manufacturer warranty coverage.
Execute oil and filter changes every 100 operating hours using 10W-30 motor oil. Inspect the dual-element air cleaner weekly on dusty routes, and check the spark plug electrode gap at 0.030 inches. Order the Kawasaki FX481V-S01-S vertical shaft engine from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.
Kawasaki FX481V-S01-S Technical Specs
| Brand | Kawasaki Full Commercial (FX) |
| Full Model Code | FX481V-S01-S |
| Displacement | 603 cc |
| Engine Type | Vertical Shaft, V-Twin 90°, OHV |
| Maximum Output | 10.8 kW (14.5 HP) @ 3600 RPM |
| Maximum Torque | 38.2 Nm (28.2 lbs-ft) @ 2400 RPM |
| Air Filtration | Multi-Stage Heavy Duty Canister Air Filter |
| Start System | Electric Start |
| Shaft Specification | 1" (25.4mm) x 3.15" (80mm) Vertical Shaft |
| Charging System | 15 Amp High-Output Alternator |
| Standard Warranty | 3 Years Commercial |
| Primary Application | Daily Professional Mowing Operations |












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