Kohler KT735-3069 24.0HP 725cc V-Twin Engine – 1in Shaft, Electric Start
For OEM replacement, Kohler KT735-3069 delivers 24.0 horsepower. A 725cc block backs up the output, and torque peaks at 56.1 Nm. Electric Start gets it running without a fuss.
- Delivers 24.0 horsepower on demand
- The 725cc block handles the load
- Maxes out around 56.1 Nm of torque
- Shaft measures 1in, horizontal configuration
- Starts at the turn of a key
Description
Need to repower an estate lawn tractor? The Kohler KT735-3069 vertical shaft engine provides an exact drop-in replacement that eliminates costly deck modifications. Large property owners wear out stock utility motors through constant heavy mowing, resulting in scored cylinder walls and hard morning starts. This 725cc 24.0HP engine uses an overhead valve V-twin design and cast-iron cylinder sleeves to handle harsh cutting demands.
The 1-inch crankshaft handles drive belt tension on dual hydro units, while full-pressure lubrication protects moving components against premature wear. The heavy-duty 12V starter motor engages the flywheel ring gear with positive solenoid drive, turning the crankshaft without manual effort on cold mornings. The dual-element commercial air cleaner prevents pulverized grass chaff and field sand from eroding the intake valve seat, preserving engine compression year after year.
Core Mechanical Specifications of Kohler KT735-3069
- 725cc 24.0HP V-Twin Powerhead: Supplies robust cutting torque to slice through dense overgrowth without engine stall.
- 1-Inch Keyed Output Shaft: Integrates with standard commercial blade adapters and ground-drive transmission systems.
- Full-Pressure Oil Lube with Spin-On Filter: Circulates pressurized oil to rod bearings and main journals during steep incline runs.
- Cast-Iron Cylinder Bore Protection: Preserves compression and limits oil burn during prolonged commercial cutting shifts.
- Heavy-Duty Commercial Air Filtration: Dual-element design protects carburetor and cylinder bore from fine lawn dust.
- 12-Volt Solenoid Shift Electric Starter: Delivers quick starts without primer bulbs or manual choke lever adjustments.
- Mechanical Engine Governor: Stabilizes engine RPM automatically when cutting blades enter heavy, wet grass.
Mechanical Advantages for Commercial Fleets
Engineered to withstand daily field use, this vertical-shaft engine combines heavy torque displacement with operator-friendly starting.
- Heavy cast iron bore lining and hardened crankshaft journals prevent mechanical failure from blade shock.
- Overhead valve design cuts fuel expenditure per route while providing broad torque bands for commercial equipment.
Equipment Fitment & Repower Applications
With an overall dry weight of 80 pounds and a 1-inch vertical PTO shaft, this unit repowers residential and prosumer zero-turn mowers, lawn tractors, and wide-area rotary mowers without frame drilling.
Factory Warranty Protection & Service Care
- Commercial equipment owners receive 3-Year limited factory warranty coverage on internal mechanical assemblies.
- Consumer property owners receive 3-Year standard factory warranty protection.
Change oil after the initial 20 operating hours, then service every 100 hours with SAE 30 or 10W-30 oil and a new filter. Inspect the air filter weekly, and set the spark plug gap at 0.030 inches. Order the Kohler KT735-3069 vertical shaft engine from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.
Kohler KT735-3069 Technical Specs
| Brand | Kohler 7000 Series™ |
| Full Model Code | KT735-3069 |
| Displacement | 725 cc |
| Engine Type | Vertical Shaft, V-Twin, OHV |
| Maximum Output | 17.9 kW (24.0 HP) @ 3600 RPM |
| Maximum Torque | 56.1 Nm (41.3 lbs-ft) @ 2600 RPM |
| Air Filtration | Standard Dual-Element Filter |
| Start System | Electric Start |
| Shaft Specification | 1" (25.4mm) x 3-5/32" Vertical Shaft |
| Charging System | 15 Amp Alternator |
| Standard Warranty | 3 Years Consumer |
| Primary Application | Premium Residential Zero-Turn Mowers |












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