Kohler Engines

RH Series



Fuel Type
5.5 Horizontal Single Air Current
Engine Uses

Professional Grade Design.

KOHLER has been manufacturing engines for more than 90 years and all that experience shows in our innovative design. KOHLER engines pack more power than engines with similar displacement.

Durable, Long Life Design.

Cool-running OHV design means your engine will last, so you can keep your equipment longer and avoid costly trips to the repair shop.

Comfortable Operation.

Oversized muffler for reduced noise. The Easy-Pull ergonomic recoil handle makes starting easy.


User-Friendly Maintenance.

  • Dual drains
  • Dipstick on fuel tank side
  • No-tools-required air cleaner
  • All-in-one throttle, choke, shutoff contol lever
  • Automatic low-oil engine shutdown system
  • Carburetor bowl drain

High Power Performance.

  • Overhead valve design
  • Large displacement
  • High-inertia flywheel

Extended Run Times.

  • Corrosion-free plastic fuel tank
  • Basin shaped combustion chamber

Quiet, Smooth Operation.

  • Muffler with heat shield
  • Mechanical governor
  • Sound-deadening alloy crankcase
  • Silenced air intake

Easy Dependable Starts.

  • Electronic ignition system
  • Easy-pull recoil starter
Engine Uses
Lawn & Landscape
Power Generation/Welder
Recreational Vehicles
Utility Equipment

Equipment Types

This engine powers the following equipment:


  • Compressor
  • Pump, Water
  • Concrete Trowel
  • Pressure Washer 2

Lawn & Landscape

  • Aerator
  • Edger
  • Stump Grinder/Cutter
  • Chipper/Shredder
  • Logsplitter
  • Tiller
  • Dethatcher
  • Pressure Washer

Power Generation/Welder

  • Generator-Portable

Recreational Vehicles

  • Go-Kart

Utility Equipment

  • Aerator-2
  • Dethatcher 2
  • Generator-Portable 2
  • Stump Grinder/Cutter 2
  • Chipper/Shredder 2
  • Edger 2
  • Pressure Washer 3
  • Tiller 2
  • Compressor 2
  • Logsplitter 2
  • Pump, Water 2

Engine Type:

Four-cycle, gasoline, OHV

J1940 Power hp(kW) 1 5.5 (4.2)
Displacement cu in (cc) 12 (196)
Bore in (mm) 2.7 (68)
Stroke in (mm) 2.1 (54)
Peak Torque lbs. ft (Nm) 10.5 (14.2)
Compression Ratio 8:05:01
Dry Weight lbs (kg) 28.8 (16)
Oil Capacity U.S. quarts (L) 0.63 (0.6)
Lubrication Splash
Dimensions L x W x H in 12.2 x 12.8 x 12.8
Backpressure Limit 2 25
J1995 Power hp (kW) 3 6.1 (4.6)
J1995 Rated Speed (RPM)  3600
* Measurements are based on a recoil-start engine.
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