The Kohler K301 is a 476 cc (29.05 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, manufactured by Kohler Co.
The Kohler K301 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 K301 engine used paper air cleaner (oiled foam pre-cleaner was available as an option).
The cylinder bore is 85.7 mm (3.37 in) and the piston stroke is 82.6 mm (3.25 in). This engine produced 12.2 PS (9.0 kW; 12.0 HP) at 3,600 rpm of horsepower.
The breakdown of the engine code is as follows:
- K – K-series
- 30 – 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 | K301 |
| Type | 4-stroke, L-head, single cylinder |
| Displacement | 476 cm 3 (29.05 cu-in) |
| Max. horsepower | 12.2 PS (9.0 kW; 12.0 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 | 85.7 X 82.6 mm (3.37 x 3.25 in) | |
| Sleeve internal diameter | 85.7123-85.7377 mm (3.3745-3.3755 in) | |
| Piston skirt outer diameter | 85.4710-85.5472 mm (3.365-3.368 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 | 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 |
K301: 1.9 L (2.01 US. qt, 1.67 Imp. qt.) K301A: 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:
I want to test my coil to see if within specifications. Do you have specs for KOhler K301 ignition coil ohms of resistance.
recherche bobine kohler k301 tel 0679982497
Just glancing through does anybody know what the total shipping weight of the k301aqs is I just bought one used off somebody and we lifted it into the car and he was he was pretty scared of lifting it and it seems to me that I’ve lifted the 314 Kohler motor and I’m thinking it’s 200 lb?