Small Engines

Get small engines running and keep them running

Lawn mowers, generators, pressure washers and other equipment powered by small engines tend to fail at the worst moment, usually after months in a shed. Stale fuel, clogged carburetors, dirty air filters and fouled spark plugs cause most no-start problems, and they are often fixable at home with basic tools and a little patience.

The guides in this section follow the logic every small engine needs, which is fuel, spark, air and compression. You will learn how to diagnose a hard start step by step, clean a carburetor, choose and change oil and store fuel so it stays usable. Each guide lists the tools you need and explains why each step matters. Disconnect the spark plug before working on blades or moving parts, and work outdoors with plenty of ventilation. If the engine knocks, smokes heavily or loses compression, see a repair shop.