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Exmark Lawn mower smoking

If your Exmark lawn mower is smoking and blowing black smoke, the engine is usually running rich, which means the carburetor is letting in too much fuel. The most likely cause is a carburetor float stuck open, followed by a choke stuck closed that limits airflow and throws off the air-fuel mixture. In many cases, an Exmark lawn mower smoking problem points straight to the carburetor itself, and if the internal parts are worn or sticking, a carburetor repair kit may be the right fix. Checking the carburetor for a float issue, fuel flooding, or choke trouble is the best place to start when your lawn mower engine smoking problem shows up after startup or while mowing. Whether your mower is running rich all the time or only under load, replacing a damaged carburetor or rebuilding it with the correct carburetor repair kit can restore normal performance. Enter your Exmark model number on RepairClinic.com to find the exact carburetor, carburetor repair kit, or other small engine parts that fit 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 - Exmark 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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03 - Exmark Lawn Mower Carburetor Repair Kit

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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Frequently Asked Questions

Why is my Exmark lawn mower smoking black?
Can a bad carburetor make an Exmark mower blow black smoke?
What carburetor parts should I check first if my Exmark mower is running rich?
Should I replace the carburetor or use an Exmark carburetor repair kit?
How do I find the right carburetor or carburetor repair kit for my Exmark mower?

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