backfire

freezeplug

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Oct 9, 2012
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my mower is backfiring when i shut it off it's a B & S 20 hp twin fire
 

My_guy99

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Oct 7, 2012
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Do you have the mower on open choke or a high idle or low idle?
 

freezeplug

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it has a pull out choke on it the mower was never used much :confused2:. it does surge a little bit when idling. i did replace the plugs as well
 

My_guy99

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Don't know why the other part didn't show up but as I was saying! Need to know the basics like model I gather its a vtwin 20hp
 

My_guy99

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Normally it would be your idle speed at shut down, but you say you are in low! And the plugs are new at the right gap setting as well I take it.
 

freezeplug

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yes i set them before installing them, i was also told to try letting it idle for 30 to 60 seconds before shutting it down that make any sense to you ?
 
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