The Kohler K330 is a 552 cc (33.6 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from K-series, manufactured by Kohler Co.
The Kohler K330 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. A 92.075 mm (3.63 in) cylinder bore and 82.5 mm (3.25 in) piston stroke give the motor a total of 552 cc (33.6 cu·in) of displacement.
This engine produced 12.6 PS (9.3 kW; 12.5 HP) at 3,200 rpm of horsepower and 27.5 Nm (2.81 kg·m; 20.3 ft·lb) at 3,200 rpm of torque.
The breakdown of the engine code is as follows:
- K – K-series
- 33 – 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 | K330 |
Type | 4-stroke, L-head, single cylinder |
Displacement | 551 cm 3 (33.6 cu-in) |
Max. horsepower | 12.6 PS (9.3 kW; 12.5 HP) at 3,200 rpm |
Max. torque (crank PTO) | 27.5 Nm (2.81 kg·m; 20.3 ft·lb) at 3,200 rpm |
Fuel system | Carburetor |
Cooling system | Forced-air |
Ignition system | Magneto ignition system |
Lubricating system | Gear-type oil pump |
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 | 92.075 x 82.5 mm (3.63 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 qts. |
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
What is the air gap for the magneto on a 12.5 hp K series engine
What size is the flywheel retaining nut on k330c? An information would be greatly appreciated, trying to find a replacement for unit and it’s not been easy as the threads on the original are non existent.