The Kohler K341 is a 588 cc (35.88 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, manufactured by Kohler Co.
The Kohler K341 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 K341 engine used paper air cleaner (oiled foam pre-cleaner was available as an option).
The cylinder bore is 95.3 mm (3.75 in) and the piston stroke is 82.6 mm (3.25 in). This engine produced 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm of horsepower.
The breakdown of the engine code is as follows:
- K – K-series
- 34 – 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 | 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 Block and Head
| 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) | |
| 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) | |
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 |
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) |
Author:
Useful information.
Thank you!
useful info
The manual for my Kohler 4500 generator, which is powered by the K341EP motor, says the generator runs at 1800 RPM, so the specs above aren’t capturing all the possible variations.
You are missing the point gap measurement!
what are the torque spec for the piston rod
How to fix decompression
Hi, Have you caracteristics, size of crankschaft and connecting rod for motor M341