The Kohler K361 is a 588 cc (35.89 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, manufactured by Kohler Co.
The Kohler K361 engine has an OHV (overhead valves) design and horizontal PTO-shaft. This engine was equipped with side draft carburetor with adjustable jet and battery ignition systems. The K361 engine used dry type air cleaner.
The cylinder bore is 95.3 mm (3.75 in) and the piston stroke is 82.6 mm (3.25 in). This engine produced 18.2 PS (13.4 kW; 18.0 HP) at 3,600 rpm of horsepower.
The breakdown of the engine code is as follows:
- K – K-series
- 36 – 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;
A – Special oil pan;
C – Clutch model;
P – Pump model;
Q – Quled model;
General information
| Engine Specifications | |
| Model | K361 |
| Type | 4-stroke, L-head, single cylinder |
| Displacement | 588 cm 3 (35.88 cu-in) |
| Max. horsepower | 18.2 PS (13.4 kW; 18.0 HP) at 3,600 rpm |
| Max. torque (crank PTO) | – |
| Fuel system | Side-draft carburetor |
| Cooling system | Forced-air |
| Ignition system | Battery 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 | 95.250 mm (3.75 in) | |
| Piston skirt outer diameter | 95.060 mm (3.7425 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Cylinder Head | ||
| Valve Arrangement: | OHV | |
| Valves: | 2 | |
Tightening torque specs
| Tightening torque specs | |
| Cylinder head bolt | 41-48 Nm; 4.2-4.9 kg·m; 30-35 ft·lb |
| Flywheel nut | 81-95 Nm; 8.3-9.7 kg·m; 60-70 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 | 0.13 mm (0.0051 in) |
| Exhaust valve clearance | 0.13 mm (0.0051 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: 1.4 L (1.5 US. qt, 1.23 Imp. qt.) |
| Ignition system | |
| Spark plug | Champion: RH10 |
| Spark plug gap | 0.89 mm (0.035 in) |
| Ignition timing | 20° B.T.D.C. |
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