While you wait for answers, we may have found some information which could help you.
Click here for Oil Leak Gasket
lawn mower won't start?
what causes my Briggs and Statton petrol mower to hunt ?
b/s lawn mower small engine?
Excessive Compression?
lawn mower briggs and stratton classic 35?
my briggs and stratton 3.5hp starts up then cuts out straight away?