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How Does a 4-Cycle Small Engine Work? — Engine Repair Tips

Small engine won't start, runs unevenly, or won't stay running? This video provides information on how an engine works and offers troubleshooting tips to assist you in diagnosing and repair.

Here is a list of the most commonly replaced parts associated with each engine symptom:

Small engine Won't Start: spark plug, carburetor, ignition coil, start switch
Engine stops after a few seconds: fuel cap, carburetor
Engine leaks gas: carburetor gasket, float bowl gasket, carburetor bowl gasket, fuel tank
Engine runs poorly: Carburetor, carburetor repair kit, spark plug, fuel filter


All of the information provided in this engine troubleshooting video is applicable to the following brands: Briggs & Stratton, Craftsman, Cub Cadet, Honda, Husqvarna, Kawasaki, Kohler, MTD

How your small engine works:

For more DIY videos including part replacement and help finding your model visit the repair help section of our website: Small Engine repair help

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