If your Zama small engine that runs then dies, starts but won't stay running, or runs for a few seconds then stalls most often has a clogged carburetor. Stale or ethanol-blended fuel left in the carburetor is one of the most common root causes on seasonal equipment. As fuel evaporates, it leaves a sticky residue that can block the main jet, pilot jet, needle valve, or passages in the carburetor, causing the engine to start and then die. Clean the carburetor with carburetor cleaner, and replace or rebuild it with a Zama small engine carburetor repair kit if cleaning does not restore steady operation. If the carburetor is clean, check the fuel cap. A clogged fuel cap vent can create a vacuum in the fuel tank and stop fuel flow, causing the engine to stall after starting. Loosen the cap slightly and restart the engine. If it stays running, replace the fuel cap. Enter your model number to find the exact carburetor, repair kit, fuel cap, or other replacement part for your specific engine.
01 - Zama Carburetor
The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the engine for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and prevent the engine from starting. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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.