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Fuel Cap 578931503
This part 578931503 is compatible with:
- Product Type:
- Edger, Lawn Mower, Leaf Blower, Snowblower, String Trimmer
- Brands:
- Husqvarna, Craftsman, MTD
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Fuel Cap Customer Reviews
Common Problems Fixed by the Fuel Cap
Based on customer reports and repair data, this part commonly fixes these issues:
About the Fuel Cap
As fuel is consumed by the engine, the level in the fuel tank lowers. To make up for this, the fuel cap uses a small vent to allow air to enter the tank. If the fuel cap vent is clogged, air won’t be able to enter the tank and a vacuum or “vapor lock” will occur. This stops the flow of fuel to the carburetor causing the engine to stall. To determine if the fuel cap vent is clogged, try slightly loosening the cap and then starting the engine. If loosening the fuel cap allows the engine to stay running it is likely clogged and will need to be replaced.
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