Kohler Engine Diesel Air-Cooled KD420

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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
  • EPA/CARB Tier 4 Compliant
  • Equipped with a larger air filtration cartridge with increased capacity
  • Cyclonic separator with one-way valve for dust discharge
  • New integrated sound dampener provide reduced noise levels
  • Engine type: Four-stroke, cast iron liner, direct injection, fully pressurized lubrication
  • HP: 9.8 HP (7.3 kW)
  • Displacement: 24.5 cu. in. (442 cc)
  • Bore: 3.4 in. (86 mm)
  • Stroke: 3 in. (76 mm)
  • Gross Torque: 13.2 ft. lb. (18 Nm)
  • Compression Ratio: 20.3:1
  • Dry Weight: 99.1 lb. (45 kg)
  • Oil Capacity: 1.6 US qt.(1.5 L)
  • Lubrication: Full pressure w/full-flow filter
  • Dimensions LxWxH: 13.2 x 15.9 x 20.2 in.
  • Engine Type: Commercial
Equipment Types
  • Welder
  • Sweeper
  • Aerial Platform
  • Tractor
  • Farm Machinery
  • Mini Excavator
  • Rotary Hoe
  • Lawn Mower
  • Cement Mixer
  • Dumper
  • Mini Dumper
  • Mini-car
  • Motor Compresssor
  • Vibrating Plate Roller
  • Asphalt Cutter
  • Generator
  • Refrigerating Groups

Power (HP) and Torque (ft. lb.) 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. Backpressure Limit expressed in Inches of H20 @ 3600 RPM WOT J1995 power and torque certified by 3rd Party Witness

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