Briggs & Stratton produces some of the world's most reliable lawn mower engines and small engines.

The engines are small in both physical dimensions and power output, relative to larger automobile engines. Power outputs are typically less than 11 kW (15 hp). The smallest of all are used in handheld garden machinery, such as string trimmers and chainsaws, which have a displacement as small as 24 cc (1.5 cu in).