If your Worx lawn mower is smoking, especially if you see black exhaust, the engine is usually running rich, meaning the carburetor is letting in too much fuel. On a lawn mower smoking complaint, the most common cause is a stuck-open carburetor float, which can flood the engine with gas. Next, check for a choke that is stuck closed, since that limits airflow and throws off the air-fuel mix. In many cases, the fix comes down to cleaning, rebuilding, or replacing the carburetor, and a carburetor repair kit may be enough if the body is still in good shape. If your mower is blowing black smoke or you suspect a mower running rich condition, inspecting the carburetor first will save time. Look closely at the float movement and choke operation before replacing parts. RepairClinic.com makes it easier to match the right Worx carburetor or carburetor repair kit to your machine. Just enter your model number on RepairClinic.com to find the exact replacement part that fits your specific lawn mower.
01 - Carburetor is Letting Too Much Fuel In
If the lawn mower engine produces black smoke, this indicates that the carburetor is getting too much fuel (or "running rich"). If the carburetor float is stuck open, the engine will get too much fuel. Similarly, if the carburetor choke is stuck closed, the lawn mower engine will not be able to draw in enough air to create the proper air-fuel mixture.
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02 - Worx Lawn Mower Carburetor
If the lawn mower engine produces black smoke, this indicates that the carburetor is getting too much fuel (or "running rich"). If the carburetor float is stuck open, the engine will get too much fuel. Similarly, if the carburetor choke is stuck closed, the lawn mower engine will not be able to draw in enough air to create the proper air-fuel mixture.
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If the lawn mower engine produces black smoke, this indicates that the carburetor is getting too much fuel (or "running rich"). If the carburetor float is stuck open, the engine will get too much fuel. Similarly, if the carburetor choke is stuck closed, the lawn mower engine will not be able to draw in enough air to create the proper air-fuel mixture.