Vanguard/Commercial Series Engine Identification

How do I identify a Vanguard/Commercial Series engine?

The Model, Type and Code numbers, stamped directly into the engine, are used to identify our engines.

Engines used in lawnmower applications usually have these numbers stamped into the blower housing, muffler heat shield or a few inches above the spark plug. Depending on the type of engine shroud used, the engine numbers may be covered. It may be necessary to remove this shroud in order to locate the Model, Type and Code.

Many horizontal shaft, overhead valve engines have these numbers stamped into the OHV rocker cover. However, on certain overhead valve powered generators, the equipment manufacturer installs a decorative chrome rocker cover OVER our cover. If your engine has a decorative cover, it may be necessary to remove it in order to locate the Model, Type and Code.

Please visit our Identify Your Model Number page for help in finding the engine’s numbers. For an explanation of our numbering system, please visit our Numerical Designation System page. Also, be aware that the numbers found on the Engine Emissions Label can be confused with the engine Model, Type and Code. Unfortunately, these numbers cannot be used to identify your engine.


Download the operator's manual for your Vanguard engine or equipment by following our step-by-step process.


Take advantage of the expertise your local dealer can provide for service and support on your Vanguard engine.

Please read and abide by any applicable Safety Information contained in your engine Operator's Manual. The material provided above is not intended to replace work performed by a Briggs & Stratton authorized dealerTerms and Conditions apply to all of the information presented on this website. Always be sure to completely read and understand your engine Operator's Manual.