While you wait for answers, we may have found some information which could help you.
Click here for Briggs Not Startinglitres of oil needed in a countax c600h ride on lawnmower?
McCulloch lawnmower parts removal ?
Petrol or diesel?
Briggs and Stratton SP470?
My Briggs & Stratton 10.5 engine will start but dies after about 15 mins?
lawn mower engine hunting?