Riding lawn mower Murray Model 309003x99A


Old 09-26-09, 04:51 PM
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Join Date: Sep 2009
Location: NC
Posts: 2
Riding lawn mower Murray Model 309003x99A

I had my carb replaced by my local maint shop. Now when I activate the blade it backfires every few min. Can anyone help me with this problem?
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Old 09-26-09, 05:08 PM
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,728
If it wasn't doing it before you changed the carb, you have the mixture set too lean. Find the adjustment screw and turn it out a little at a time until it stops backfiring.

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