We may have found other answers which could help you.
Click here for Lawn Mower Briggs & Stratton FlywheelHow to fix a problem with briggs&stratton hp407engine?
lawn mower briggs and stratton classic 35?
Briggs and Stratton SP470?
lawn mower engine hunting?
Petrol or diesel?
my briggs and stratton 3.5hp starts up then cuts out straight away?