Kohler Engines. Relentless Power. Legendary Performance.




This horizontal-shaft, gasoline-powered engine features liquid cooling and twin cylinders. Cast iron cylinder liners and aluminum block construction complement a 4-cycle, overhead-valve design.

Fuel Type
24 Horizontal V-Twin Liquid Gasoline Current
Engine Uses


KOHLER Aegis® engines boast a number of user-friendly features: dual oil drains, easy-access oil fill, low-oil protection, in-line fuel filter and top- or low-mount connections for boden wire controls.

Increased Efficiency.

Overhead valve technology provides greater volumetric efficiency and a higher compression ratio. This produces more power, improved fuel economy and cooling and reduces oil consumption. In addition, there is virtually no carbon buildup, reducing overall maintenance costs.

High Power Performance.

Featuring technologically advanced cooling systems and revolutionary air filtration, the engines deliver cooler oil temperatures, consistent running temperatures and improved air filtering for peak engine performance and reliability.


User-Friendly Maintenance.

  • Coolant overflow bottle
  • Heat exchanger cap
  • Dual oil drains
  • Easy-access oil fill/dipstick
  • Boden wire controls
  • Three-year limited warranty

High Power Performance.

  • Overhead valve (OHV) V-twin design
  • Increased displacements
  • High-inertia flywheel
  • Breather separator system

Reliability and Long Life Design.

  • Cast iron cylinder liners
  • High-flow cooling fan
  • Coolant thermostat
  • Large-capacity, interference-fit air filter with foam pre-cleaner
  • Multi-layered steel head gaskets
  • Hydraulic valve lifters
  • Lost foam cast cylinder heads
  • Full-pressure lubrication
  • Spin-on, full-flow oil filter

Quiet, Smooth Operation.

  • Mechanical governor
  • Silenced air intake
  • Integrated belt-driven water pump
  • CARB & EPA Emission Certified

Easy Dependable Starts.

  • Electronic ignition system
  • Solenoid shift starter
Engine Uses
Golf Course Maintenance
Lawn & Landscape
Power Generation/Welder
Recreational Vehicles
Utility Equipment

Equipment Types

This engine powers the following equipment:

  • Auger, Grain
  • Conveyor
  • Utility Vehicle
  • Bale Chopper
  • Utility Tractor
  • Aerator-Fairway
  • Mower, Greens-Riding
  • Utility Vehicle
  • Golf Cart
  • Mower, Riding Fairway
  • Aerial Lift
  • Compressor
  • Concrete Saw
  • Fire Pump
  • Pump, Mud
  • Roller
  • Sprayer, Other
  • Utility Vehicle
  • Carpet Cleaner
  • Concrete Breaker
  • Concrete Trowel
  • Loader/Backhoe
  • Pump - Other
  • Skid Steer Loader
  • Tar Kettle/Crack Sealer
  • Vehicle
  • Chipper/Shredder
  • Mower, Triplex Trim/Finish Cut
  • Saw Mill
  • Vacuum
  • Mower, Trans Steer Front Mount
  • Mower, Zero Turn Radius
  • Stump Grinder/Cutter
  • Marine Generator
  • Residential Standby Generator
  • Welder
  • Mobile Generator
  • RV Generator
  • ATV
  • Welder

Engine Type:

4-cycle, gasoline, OHV, cast iron cylinder liners, aluminum block

Aegis® LH690
J1940 Power hp(kW) 1 24 (17.9)
Displacement cu in (cc) 41.1 (674)
Bore in (mm) 3.2 (80.0)
Stroke in (mm) 2.6 (67)
Peak Torque lbs. ft (Nm) 42.9 (58.2)
Compression Ratio 8.5:1
Dry Weight lbs (kg) 114 (51.7)
Oil Capacity U.S. quarts (L) 2.0 (1.9)
Lubrication Full pressure w/full-flow filter
Dimensions L x W x H in 17.0 x 18.1 x 26.5
Backpressure Limit 2 50
* Includes radiator and fan. Length is radiator to closure plate. Width is radiator, side-to-side. Height is mounting surface to rain cap.
1 Power (hp) and Torque (lbs ft) specifications for Kohler general purpose engines are rated pursuant to Society of Automotive Engineers (SAE) J1940 based on gross output testing performed according to SAE J1995 without the air cleaner and muffler. Actual engine power and torque are lower and affected by accessories (air cleaner, exhaust, charging, cooling, fuel pump, etc.), application, engine speed, ambient operating conditions (temperature, humidity and altitude) and other factors. This J1940 / J1995 rating provides consistent measurement to customers who may want to control the intake and exhaust features of the engine. For more information, contact Kohler Co. Engine Engineering Department. Kohler Co. reserves the right to change product specifications, designs and standard equipment without notice and without incurring obligation.

2 Inches of H20 @ 3600 RPM WOT