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How do you fix a smoking lawnmower?

It is smoking out of the muffler.

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Lawn Mowers , Building Supplies , Lawn & Garden
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2 Answers from these members:
Manage My Life
The model number of my mower is 917.287240 and I am convinced that it is a fuel problem. I took the carb apart and checked to make sure everything was working correctly. I couldn't find anything wrong. After I put it back together, it had stopped smoking so I went back to mowing the lawn. I engaged the mower and no smoke (previously, this caused it to smoke). But once I started mowing again, I got the same smoke. What is the solution? Do I need a new carb? I am only 2 week out of my 2 year warranty.
by Manage My Life
June 5th, 2010
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Manage My Life
Lawnmowers smoke normally if the oil is overfilled, when first starting after choking or priming, or when mowing on a slope.

White smoke indicates the engine is burning a small amount of oil. Blue smoke is a larger amount of oil. Black smoke is caused from excessive fuel, running too rich.

Air cooled engines can burn 1/2 ounce of oil per hour and be normal.

If you need more definite information, send another email and include the model number of the engine or lawn mower. Also send some details of how much the lawnmower smokes, how often or when it smokes, and anything you have checked or done to the lawnmower.
by Manage My Life
October 7th, 2009
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