Diesel Air-Cooled KD15-440S

Our air-cooled diesel engines are engineered with state-of-art air filters to increase durability, and lengthen service intervals. Couple all of that with the engine's cast iron cylinder liners and you've got a machine that doesn't know how to quit.

  • New rugged design for the most extreme conditions
  • New integrated sound dampner provide reduced noise levels
  • Equipped with a larger air filtration cartridge with increased capacity
  • Cyclonic separator with one-way valve for dust discharge
  • Lowest fuel consumption
  • Lowest oil consumption
  • The widest range of accessories
  • Highest axial load (2000 N)
Owner's manual
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Service manual
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Engine type

Four-stroke, aluminum cylinder head, automatic extra fuel starting system

Model KD15-440S
HP (kW) [1] 9.2(6.8)
Displacement (cc) 26.9 (441)
Bore in (mm) 3.4 (86)
Stroke in (mm) 3 (76)
Gross Torque ft lbs (Nm) [1] 16.5 (22.5)
Compression Ratio 20.5:1
Dry Weight lbs (kg) 99.2 (45)
Oil Capacity US qts (L) 1.3 (1.2)
Lubrication Full pressure w/full-flow filter
Dimensions LxWxH (in)* 16.3 x 13.9 x 19.4
Emissions Compliance
  • No Regulations
  • China Phase II
Engine Type Commercial


1 Power (hp) and Torque (ft lbs) 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

Equipment Types

This engine powers the following equipment

  • Asphalt Cutter
  • Line Striper
  • Self-Priming Water Pump
  • Air Compressor
  • Generator Set
  • Welder
  • Motor Sweeper
  • Aerial Platform
  • High Pressure Washer
  • Firefighting Pump
  • Walk-behind Tractor
  • Tiller
  • Lawn Mower
  • Water Pump (Irrigation)
  • Concrete Mixer
  • Minidumper
  • Compaction Roller
  • Vibrating Plate

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