Kohler SH Series SH255

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Stock status: Call Store for Availability

The hard-working SH Series engine is designed for quick, easy maintenance. Heavy-duty features like cast-iron cylinder liners add long-life protection.

  • Better fuel efficiency and cleaner emissions with overhead valve design vs. L-head design
  • Built to last with cast-iron cylinder liners and crankshafts
  • Automatic engine protection – Oil Sentry™ shuts down the engine in low-oil conditions
  • Effortless starts with large indexable recoil starter and dual ball bearings
  • Smooth operation from reduced noise and vibration


Engine Type

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

Model SH255
Power[1] kw (hp) 4.2(5.5)@3600rpm
Displacement cm3 (in3) 196 (12)
Bore mm (in) 68 (2.7)
Stroke mm (in) 54 (2.1)
Maximum Torque[1] Nm (lb-ft) 13.6 (10)@3000rpm
Compression Ratio 8.5:1
Dry Weight kg (lbs) 16 (35.3)
Oil Capacity L (US qt) 0.6 (0.63)
Lubrication Splash
Dimensions LxWxH mm (in) 319 x 366 x 343
(12.5 x 14.4 x 13.5)
Backpressure Limit[2] 25
Certified Power[3] kw (hp) 3.8 (5.1)
Certified rpm rpm 3600
Emissions Compliance
  • EU Stage V
  • CARB Phase III
  • EPA Phase III
Engine Type Consumer

Length is PTO to recoil cover. Width is fuel tank to muffler. Height is from mounting surface to top of muffler.

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