Kohler K241

Kohler K241The Kohler K241 is a 391 cc (23.86 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, manufactured by Kohler Co.

The Kohler K241 engine has an L-head (side valve) design and horizontal PTO-shaft. This engine can be equipped with Kohler or Walbro carburetor and magneto, battery or breakerless ignition systems. The K241 engine used paper air cleaner (oiled foam pre-cleaner was available as an option).

The cylinder bore is 82.6 mm (3.25 in) and the piston stroke is 73.0 mm (2.87 in). This engine produced 10.2 PS (7.5 kW; 10.0 HP) at 3,600 rpm of horsepower.

The breakdown of the engine code is as follows:

  • K – K-series
  • 24 – Approximate daisplacement (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;

General information

Engine Specifications
Model K241
Type 4-stroke, L-head, single cylinder
Displacement 391 cm 3 (23.86 cu-in)
Max. horsepower 10.2 PS (7.5 kW; 10.0 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 Block and Head

Cylinder block
Compression ratio:
Bore x Stroke 82.6 X 73.0 mm (3.25 x 2.87 in)
Sleeve internal diameter 82.5627-82.5881 mm (3.2505-3.2515 in)
Piston skirt outer diameter 82.3290-82.3773 mm (3.2413-3.2432 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 21.8338-21.8415 mm (0.8596-0.8599 in)
Piston pin outer diameter 21.8211-21.8262 mm (0.8591-0.8593 in)
Cylinder Head
Valve Arrangement: L-head (sidevalve)
Valves: 2
Valve head diameter: INTAKE 34.798-35.052 mm (1.370-1.380 in)
EXHAUST 28.448-28.702 mm (1.120-1.130 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)

Tightening torque specs

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

Engine
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 K241: 1.9 L (2.01 US. qt, 1.67 Imp. qt.)
K241A: 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)
ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

8 Comments

  1. What the heck is a “quled” motor?

    Thanks for the info for the Kohler K241 “quled” motor I am trying to rebuild. Your information helped greatly.

    • I got one here and i am on the verge of rebuilting it and nice place to start .I also have 3 more Kohler k91 and the K341 and the K241 have two of them all work just one need to be rebuilt

  2. my k24 engine eats through batteries. should i replace the starter or what should i do so it does not do that?

  3. j’EN AURAIS UN KHOLER MODÈLE k241 À VENDRE ET IL ONCTIONNE TRÈS BIEN 418-624-0960

Leave a Reply

Your email address will not be published.


*