The 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) |
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.
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.
Why not? I really would like to know what a quled motor is.
Great site. All the information that I required for my old Kohler 241s engine. Many thanks.
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
Thanks! I was wondering what the AS after 241 meant.
my k24 engine eats through batteries. should i replace the starter or what should i do so it does not do that?
meant to say k241, sorry