We may have found other answers which could help you.
Click here for Engine Carburetor Lawn Mower
How to fix a problem with briggs&stratton hp407engine?
lawn mower briggs and stratton classic 35?
my briggs and stratton 3.5hp starts up then cuts out straight away?
lawn mower engine hunting?
what causes my Briggs and Statton petrol mower to hunt ?
Petrol or diesel?