While you wait for answers, we may have found some information which could help you.
Click here for Briggs Stratton CableMy Briggs & Stratton 10.5 engine will start but dies after about 15 mins?
McCulloch lawnmower parts removal ?
Petrol or diesel?
Adding oil to mower ?
lawn mower won't start?
my briggs and stratton 3.5hp starts up then cuts out straight away?