While you wait for answers, we may have found some information which could help you.
Click here for Ignition Spark Lawn Mower
b/s lawn mower small engine?
lawn mower won't start?
my briggs and stratton 3.5hp starts up then cuts out straight away?
How to fix a problem with briggs&stratton hp407engine?
Excessive Compression?
Briggs and Straton Motors?