My mower will not start even though it was running the last time I used it.

If the engine is not getting fuel, you could have one of several problems. The most common problem that we see is debris or water in the fuel tank. Over time, water condenses in fuel tanks and small amounts of grass and dust are knocked or poured into the tank during refueling. Even this small amount of debris is enough to clog the jets and ports of a carburetor. A good rule of thumb is that if you can see the debris, it is capable of clogging the carb. In this situation, the fuel tank and carb must be removed and cleaned.

Another problem that we see alot is stale fuel. If gasoline is stored for an extended period of time, it will begin to break down and form a yellowish-brown varnish. Because of the chemicals that are added to present day fuels, gasoline can not be stored for more than about 3 weeks before it starts to go stale. If stale fuel is the cause of your problem, the carburetor will have to be rebuilt and the fuel tank will need to be cleaned or replaced.

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