Question about Yard Machines 11A54MC006 21Inch 139cc MTD OHV Gas Powered Side Discharge

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Mowing a dry dusty yard- mower running very slowly- some dark smoke also- air filter clogged? thanks

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  • Mike Cairns
    Mike Cairns May 27, 2011

    Based on your dusty yard as you stated, it appears as it is loading up by starving it for air. First thing I always do after a mower has been sitting all winter , is fresh gas, air filter cleaned or replaced, new plug and fuel filter.

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Sounds like you have restricted the air from going into your carburator to the point the mower is just running. Change the filter and if is that dusty you to may want to put on a mask. Be careful. GOOD LUCK.

Posted on Jul 13, 2011

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Save your self some starting trouble.


Aside from changing the oil in your lawn mower, to prevent hard starts and possible complications in the future, regularly check the air filter.

Its an often over looked wearable part that can cause a bit of aggravation when starting, and possible rough running.

You want to make sure that it is not clogged with debris and not extremely dirty. You can have a fairly new filter or machine, but if its dusty, or dry where you mow, it can clog up fast.

When your air filter becomes clogged, it inadvertently chokes the engine causing it to pull too much gas into the engine which leads to flooding of the engine, and the engine not running as well or as efficiently.

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