While you wait for answers, we may have found some information which could help you.
Click here for Starter Briggs StrattonMcCulloch lawnmower parts removal ?
lawn mower won't start?
My Briggs & Stratton 10.5 engine will start but dies after about 15 mins?
Briggs and Stratton SP470?
my briggs and stratton 3.5hp starts up then cuts out straight away?
westwood t1200?