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) |
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