The Kohler K660 is a 1,101 cc (67.20 cu·in) twin-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, manufactured by Kohler Co.
The Kohler K660 engine has an aluminum cylinder head, cast-iron liners, and horizontal PTO-shaft. The engine used a carburetor fuel system, magneto ignition system and lubrication system with gear type oil pump.
The cylinder bore is 92.0 mm (3.62 in) and the piston stroke is 82.5 mm (3.25 in). This engine produced 27.2 PS (20 kW; 26.8 HP) at 3,600 rpm of horsepower and 58 Nm (5.92 kg·m; 42.8 ft·lb) at 3,000 rpm of peak torque.
The breakdown of the engine code is as follows:
- K – K-series
- 66 – Approximate daisplacement (cu·in)
- Suffix (engine is available with the following options):
- P – Direct mounted;
- S – Electric starter and generator;
- C – Clutch model;
General information
| Engine Specifications | |
| Model | K660 |
| Type | 4-stroke, L-head, twin cylinders |
| Displacement | 1,101 cm 3 (67.20 cu-in) |
| Max. horsepower | 27.2 PS (20 kW; 26.8 HP) at 3,600 rpm |
| Max. torque (crank PTO) | 58 Nm (5.92 kg·m; 42.8 ft·lb) at 3,000 rpm |
| Fuel system | Downdraft carburetor |
| Cooling system | Forced-air |
| Ignition system | Magneto ignition system |
| Lubricating system | Gear-type oil pump |
| Starting system | 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 | 92.0 X 82.5 mm (3.62 x 3.25 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Cylinder Head | ||
| Valve Arrangement: | L-head (sidevalve) | |
| Valves: | 2 | |
Service Information
| Engine | |
| Max speed | 3,600 rpm |
| Oil system | |
| Oil type | API SF or SG |
| Recommended oil | Summer: SAE 30W Winter: SAE 5W-20, 5W-30 |
| Oil capacity | 3 1/2 qts. |
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