Carb adjustment

[gregg29]

Would like to know how to adjust the carb on my murray riding mower model 5231X92A. Briggs engine 460777. 20 Hp twin

 

[chance123]

Would like to know how to adjust the carb on my murray riding mower model 5231X92A. Briggs engine 460777. 20 Hp twin

More than likely, due to the EPA, there are no adjustments except for idle speed and possible low speed air adj