Lawn mower problem wont stay running?

Question

i cleaned the carbs, its got fuel, i replaced air filter, changed oil, have spark, changed wire, changed plug, so ya, basically its getting all three of what it needs, but it will not run. it will try to start at first, but runs rough then wont start for a while, then it will just do the same thing again. its a 4.75 briggs on a poulan weed eater push mower. any help?

Answer 1

The carb needs to be properly cleaned and a rebuild kit intalled.

Answer 2

My be the float in the carb or just old gas

Answer 3

Check the shear pin in the flywheel to see if it is damaged(screws up timing)