While you wait for answers, we may have found some information which could help you.
Success
Message
my briggs and stratton 3.5hp starts up then cuts out straight away?
Briggs and Stratton SP470?
Adding oil to mower ?
westwood t1200?
My Briggs & Stratton 10.5 engine will start but dies after about 15 mins?
Petrol or diesel?
lawn mower briggs and stratton classic 35?
lawn mower won't start?
lawn mower engine hunting?
How can I fix Mountfield Laser Omega 46 Lawnmower?
litres of oil needed in a countax c600h ride on lawnmower?
McCulloch lawnmower parts removal ?