For push mowers, the lawn mower engine model number is generally the number stamped into metal directly on your engine. Some push mower engines come with a cover or "shroud". It should be noted that these covers come in a variety of colors, sizes and shapes.
How to Find Your Lawn Mower Engine Model Number
3 Locations for Push Mower Engine Model Numbers
If you have a push lawn mower powered by a Briggs & Stratton engine, your model number is in one of three locations.