Kohler K341 (16.0 HP, 588 cc) Engine: Specs & Review

Kohler K341 Engine Specs

The Kohler K341 is a 35.88 cu·in, 588 cc single-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, made by Kohler Co.

The Kohler K341 engine has a horizontal PTO shaft and L-head (side valve) design. This Kohler K341 engine can be fitted with Kohler or Walbro carburetor, magneto, battery, or breakerless ignition systems. The Kohler K341 engine used a paper air cleaner (an oiled foam pre-cleaner was available).

The cylinder bore is 3.75 in (95.3 mm), and the piston stroke is 3.25 in (82.6 mm). This engine delivered 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm horsepower.

The breakdown of the engine code is as follows:

  • K – K-series
  • 34 – Approximate displacement (cu·in)
  • 1 – Single cylinder
  • Suffix (engine is available with the following options):
  • S – Electric starter;
  • T – Retractable starter;
  • ST – Electric and retractable starter;
  • EP – Electric plant;
  • A – Special oil pan;
  • C – Clutch model;
  • G – Generator applications;
  • P – Pump model;
  • Q – Quled model;
  • R – Reduction gear;

Kohler K341 Engine Specs

Engine Specifications

Model K341
Type 4-stroke, L-head, single cylinder
Displacement 588 cm 3 (35.88 cu-in)
Max. horsepower 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm
Max. torque (crank PTO)
Fuel system Carburetor (Kohler or Walbro, fixed main jet or adjustable main jet)
Cooling system Forced-air
Ignition system Magneto or battery or breakerless ignition system
Lubricating system Splash type
Starting system Recoil or electric starter
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity

Cylinder Head

Valve Arrangement: L-head (sidevalve)
Valves: 2
Valve head diameter: INTAKE 34.798-35.052 mm (1.370-1.380 in)
EXHAUST 34.798-35.052 mm (1.370-1.380 in)
Stem outer diameter (standard): INTAKE 7.887-7.899 mm (0.3105-0.3110 in)
EXHAUST 7.833-7.851 mm (0.3084-0.3091 in)

Cylinder block

Compression ratio:
Bore x Stroke 95.3 X 82.6 mm (3.75 x 3.25 in)
Sleeve internal diameter 95.2627-95.2373 mm (3.7505-3.7495 in)
Piston skirt outer diameter 95.0595-95.0214 mm (3.7425-3.741 in)
Number of piston rings (compression / oil): 2 / 1
Ring end gap Top 0.177-0.432 mm (0.007-0.017 in)
Second 0.177-0.432 mm (0.007-0.017 in)
Connecting rod small end ID 22.2428-22.2504 mm (0.8757-0.876 in)
Piston pin outer diameter 22.2300-22.2352 mm (0.8752-0.8754 in)

Tightening torque specs

Cylinder head bolt 34-41 Nm; 3.5-4.2 kg·m; 25-30 ft·lb
Flywheel Nut: 68-81 Nm; 6.98.2 kg·m; 50-60 ft·lb
Screw: 30-35 Nm; 3.0-3.5 kg·m; 22-27 ft·lb
Spark plug 25-30 Nm; 2.55-3.06 kg·m; 18-22 ft·lb

Service Information

Max speed 3,600 rpm
Valve clearance
Intake valve clearance 0.20-0.25 mm (0.0079-0.0098 in)
Exhaust valve clearance 0.43-0.48 mm (0.0169-0.0189 in)
Oil system
Oil type API SF or SG
Recommended oil Summer: SAE 30W
Winter: SAE 5W-20, 5W-30
Oil capacity K321: 1.9 L (2.01 US. qt, 1.67 Imp. qt.)
K321A: 1.2 L (1.27 US. qt, 1.06 Imp. qt.)
Ignition system
Spark plug Champion: RH10
Spark plug gap 0.65 mm (0.0256 in)

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Final Words

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