Kohler Engines. Relentless Power. Legendary Performance.

Command PRO Gaseous Fuels



Command PRO® V-twin horizontal-shaft carbureted propane engine. OHV, cast iron cylinder liners and aluminum block construction ensure reliability. Also features large-capacity air and oil filters, high-performance spark plugs and hydraulic valve lifters. Drop-in-place design features engine-mounted propane fuel pressure regulator, 12V fuel shutoff solenoid and engine-mounted vaporizer for liquid or vapor withdrawal.

Fuel Type
21.5 Horizontal V-Twin Air Propane Current

Professional Grade Design.

Command PRO® gaseous fuel engines are designed to run on either natural gas or propane, and may be used on government/municipal Ozone Action Days due to their low emissions. This professional line of carbureted propane and natural gas engines eliminates bad gasoline issues and lets you skip fuel-system winterization.

Reliable Starting.

Easy starts with Command PRO® digital spark ignition and high-torque solenoid shift starter.

Durable, Long Life Design.

Hydraulic valve lifters are oil pressurized, so push rods stay in constant contact with the rocker arms. The valve train requires no adjustment and is virtually maintenance-free. Full-pressure lubrication delivers continuous lube to critical engine components, even at 25-degree angle of operation.

High Power Performance.

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. There is virtually no carbon buildup, which reduces overall maintenance costs. The variable-speed mechanical governor offers smooth performance, regardless of application or fluctuating demands for power.


User-Friendly Maintenance.

  • Extended maintenance intervals
  • Yellow oil fill cap & dipstick handle
  • Dual oil drains
  • Easy-access oil fill/dipstick
  • Three-year unlimited-hour warranty

High Power Performance.

  • High-performance spark plugs
  • 20 amp charging, regulated
  • Overhead valve (OHV) design

Reliability and Long Life Design.

  • Oil cooler
  • Hardened crankshaft journals
  • PTO sleeve bearing - optional
  • High-efficiency fan and screen
  • Dual element low-profile air cleaner
  • Cast iron cylinder liners
  • Hydraulic valve lifters
  • Full-pressure lubrication
  • Spin-on, full-flow oil filter

Quiet, Smooth Operation.

  • Engineered material blower housing
  • International Emissions Certifications

Easy Dependable Starts.

  • Electronic ignition system
  • Solenoid shift starter
Engine Uses

Engine Type:

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

Command PRO® CH730LP
J1940 Power hp(kW) 1 21.5 (16)
Displacement cu in (cc) 44 (725)
Bore in (mm) 3.3 (83)
Stroke in (mm) 2.6 (67)
Peak Torque lbs. ft (Nm) 34 (46.1)
Compression Ratio 9.0:1
Dry Weight lbs (kg) 108 (49)
Oil Capacity U.S. quarts (L) 2 (1.9)
Lubrication Full pressure w/full-flow filter
Dimensions L x W x H in 14 x 17.7 x 19
Backpressure Limit 2 50
J1995 Power hp (kW) 3 20.4 (15.2)
J1995 Rated Speed (RPM)  3600
* Length is grass screen to PTO mounting face. Width is spark plug to spark plug. Height is top of air cleaner to mounting feet.
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

3 J1995 power and torque certified by 3rd Party Witness