What Causes a Lawn Mower to Backfire?

Answer

Burning fuel entering the engine can cause a lawn mower to backfire. Fuel entering the exhaust can also cause a backfire.
Q&A Related to "What Causes a Lawn Mower to Backfire?"
because there is too much gas in the cylinder. to fix it, lower the choke. also timing could be off due to a run of thick grass or hitting object with blade. flywheel key could be
http://wiki.answers.com/Q/Why_is_the_lawn_mower_is...
1. Put the throttle to "turtle" after use. 2. Ride the lawnmower around for two minutes. 3. Turn it off. It shouldn't backfire anymore.
http://www.wikihow.com/Keep-Your-Lawn-Mower-from-B...
Correcting backfire in an engine may be as simple as changing the shutdown procedure. Several manufacturers recommend turning the speed or idle lever to slow or low for a few seconds
http://www.ehow.com/info_12132328_lawn-mower-backf...
3 possibilities: 1) lean fuel mixture causes intake backfire. 2) rich fuel mixture causes exhaust manifold backfire. change the fuel mixture on your carburetor and if it's one of
http://answers.yahoo.com/question/index?qid=201007...
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A lawn mower engine will backfire when a bit of burning fuel enters the engine. This can also be a result of fuel entering the exhaust. The fuel ignites when a ...
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