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Lawn Mower Makes a Lot of Smoke

The 3 most common part(s) or condition(s) which cause the symptom Lawn mower makes a lot of smoke are listed below starting with the most likely. Check or test each item and watch any available videos.


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Other Causes and Conditions

Carburetor is Letting Too Much Fuel In

If the lawn mower engine produces black smoke the carburetor is running rich - in other words, it is getting too much fuel. The carburetor is the most common cause of this problem. If the float is stuck too much fuel can flow into the engine. Also, if the carburetor choke is stuck closed the lawn mower engine will not be able to draw enough air to create the right air-fuel mixture and the engine will produce black smoke. Check the choke first to be sure it is opening properly. If the choke is good, the carburetor should be repaired or replaced.

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Carburetor

If the lawn mower engine produces black smoke it is getting too much fuel. The carburetor is the most common cause. If the float is stuck too much fuel can flow into the engine. Also, if the carburetor choke is stuck closed the engine will not be able to draw enough air to create the right air-fuel mixture and the engine will produce black smoke. Check the choke first to be sure it is opening properly. If the choke is good, the carburetor should be repaired or replaced.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Carburetor Kit

If the engine produces black smoke it is getting too much fuel. The carburetor is the most common cause. If the float is stuck too much fuel can flow into the engine. Also, if the carburetor choke is stuck closed the engine will not be able to draw enough air to create the right air-fuel mixture and the engine will produce black smoke. Check the choke first to be sure it is opening properly. If the choke is good, the carburetor assembly should be repaired or replaced. This carburetor kit contains the key components needed to rebuild the carburetor.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

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