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