Kohler Engines. Relentless Power. Legendary Performance.


You've Got Questions. We Have Answers.

Have a question about KOHLER engines? We've compiled a list of common questions and answers below.

Click here for a searchable list of KOHLER dealers. Or call us at 1-800-544-2444 (from the U.S. and Canada). You can also look up "Engines-Gasoline" in your local Yellow Pages.

KOHLER engines are found in a wide array of equipment that includes lawn and garden, commercial landscape, industrial construction, golf course maintenance, power generation, recreational and agricultural applications.

All KOHLER Courage®, Triad OHC, Command PRO, Command® and Magnum engines have a 2-year warranty period from the date of purchase by the end user. See the warranty pages of your owner's manual for additional details on specific engine warranties.

The engine identification numbers (model, spec and serial number) are on a silver decal normally affixed to the blower housing of the engine. These numbers should be provided to the dealer whenever parts are required.

Perform proper maintenance for each of the following areas, as outlined in your owner's manual:

  1. Air Filter
  2. Oil (and filter)
  3. Cooling System (including the flywheel fan, cooling fins and any radiators or oil coolers).

You can determine the manufacture of your engine using the serial number. Click here to view a sample engine identification decal.

Hydraulic valve lifters reduce valve noise and compensate for valve wear. This eliminates valve adjustments and ensures full power output throughout the life of the engine.

Unleaded regular gasoline with a pump sticker octane rating of 87 or higher can be used. If you are required to use oxygenated fuel, blends containing a maximum of 10% ethanol or 15% MTBE are acceptable. Fuels with higher concentrations and methanol blends are not recommended.

Gasohol (up to 10% ethyl alcohol, 90% unleaded gasoline by volume) is approved as a fuel for KOHLER engines. Other gasoline/alcohol blends including E20 and E85 are not to be used and are not approved. Any failures resulting from use of these fuels will not be warranted.

10W-30 (Command Oil) is recommended for Command, Courage, Command PRO, Command PRO CS, Triad OHC, and Aegis engines for temperatures above freezing (32°F, 0°C). SAE-30 is an acceptable substitute if temperatures are above 50°F, 10°C. K-Series and Magnum engines should use SAE 30 (Magnum Oil) above freezing. 5W-20 or 5W-30 can be used in all engines when temperatures are below freezing. For more complete oil specifications refer to your owner's manual. For optimum performance, Kohler's special blend oils are available from your KOHLER dealer.

Synthetic oils meeting the classifications listed in the owner's manual may be used, however oil changes still need to be performed at the recommended intervals. To allow the piston rings to seat properly, Kohler recommends operating a new or rebuilt engine for at least 50 hours on standard oil before switching to the synthetic oil.

Due to possible variations within a model series, it is recommended that you rely on your actual dipstick readings. Add oil of the proper type, up to the "F" or "FULL" mark on the dipstick. Your owner's manual can provide you with more specific information.

Kohler does not recommend using additives or cleaners in the oil or fuel system. Air-cooled engines operate at higher temperatures than liquid-cooled automotive engines, and additives developed for automotive use may not perform properly at higher temperatures. Oil additives can prematurely break down, altering the properties of the oil and leading to extensive internal damage or failure. Fuel system cleaning additives have a tendency to separate and turn acidic, causing damage to fuel system components. However, a fuel stabilizer is recommended in the fuel during periods of non-use (one month or more) to retard fuel deterioration.

We suggest that you contact an authorized KOHLER dealer to diagnose the problem and recommend the appropriate service or repair options. If you desire a second opinion, the dealer should contact their central distributor.

We recommend that the battery be disconnected, recharged with a battery charger and then tested for full capacity. Jump-starting can damage other components on the engine.

Varnish and gum deposits from stale gasoline are frequently the cause. We recommend the engine be checked and serviced by an authorized KOHLER dealer. In the future, follow the storage procedures in the owner's manual. Adding a stabilizer to the fuel in the fuel tank before a period of non-use (one month or more) will help prevent fuel deterioration.

Your owner's manual lists the proper shutdown procedures to avoid this occurrence. If your engine is equipped with a fuel shut-off solenoid, be certain to set the throttle between half and full throttle before turning the key switch to OFF.

KOHLER genuine parts may be obtained from any of the authorized dealers in your area or ordered on our website. Visit the Buy Kohler Genuine Parts page to learn more about these options.

KOHLER brand filters are produced to our exact specifications, including media size and internal valve requirements. There may be similar filters on the market, but we cannot verify their accuracy or control their quality. Our recommendation is to shop around for the best price on KOHLER filters and replace them as recommended in your owner's manual.

Yes, we do. Sometimes new technology and designs permit us to discontinue one line in favor of a higher performing, lower emission product. Depending on the length of time since we discontinued a given engine, service parts may still be available. Contact your KOHLER dealer for more information.

Switching to a Command PRO engine may be possible, but it will not be a "drop in" replacement. Extensive modifications are often required. We recommend that a KOHLER dealer perform conversions of this nature.

You can determine the manufacture of your engine using the serial number. Contact Kohler to view a sample engine identification decal.