Walbro carburettors are found on a variety of manufacturers' two-cycle equipment. The carburettor mixes the fuel and oxygen before sending it to the engine cylinder. These carburettors use an internal diaphragm so that carburettor can rotate in any position and still run. Each Walbro carburettor has a marking stamped on it. When replacing the carburettor, you must use the proper replacement to ensure the engine's performance level as well as to prevent damage to the internal engine components. Reading the markings on the side of your carburettors will take only five minutes to complete.
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Things you need
- Carburettor cleaner
- Pen and paper
Set the engine on a hard, flat surface. Locate the carburettor: On the right of the engine, below the air filter cover is the carburettor.
Clean the carburettor by spraying the carburettor cleaner generously around the entire carburettor housing. Locate the stamped markings on the carburettor on the bottom left corner.
Write down the stamped lettering. It will read either WT or WTA. The WTA carburettor has two adjustment screws and a choke; these are found on older models, before the stricter EPA regulations. The WT has no choke and are on newer engines and are more fuel-efficient.
Tips and warnings
- Keep a record of the marking on the carburettor. If replacement parts are needed, you must have the marking to order the correct parts.
- Never replace a carburettor that does not match the original markings because internal damage to the engine may occur.
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