Kohler K330

Kohler K330The 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
Type4-stroke, L-head, single cylinder
Displacement551 cm 3 (33.6 cu-in)
Max. horsepower12.6 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 systemCarburetor
Cooling systemForced-air
Ignition systemMagneto ignition system
Lubricating systemGear-type oil pump
Starting systemRecoil or electric starter
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity

Cylinder Block and Head

Cylinder block
Compression ratio:
Bore x Stroke92.075 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)

Service Information

Max speed3,600 rpm
Oil system
Oil typeAPI SF or SG
Recommended oil Summer: SAE 30W
Winter: SAE 5W-20, 5W-30
Oil capacity3 qts.
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

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.


  1. 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.

Leave a Reply

Your email address will not be published.