Describe your Briggs & Stratton

I have a Craftsman rear engine riding lawn mower and it runs rough in fast mode. It also misses and chokes out when mowing. It has a 13.5 HP engine. I've changed the fuel filter and cleaned the carb, but no change in status. Oil has less than 10 hours and is at correct level, Air filter has 10 hours also and is clean. Does anyone have any suggestions other than burn the thing and take it to the junk yard?

Check fuel flow from the tank out of the fuel fuel pipe allso check the float level sounds like its running out of fuel then its needing fuel .at idle it can get some fuel but at fast no fuel try that mate

You need to rebuild carb and check groverner spring

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