i believe it is .010 to .015. you can go to B&S site to find out for sure
You buy a coil with it on it
The coil is under the cowling on top of the motor where the flywheel is.
you can goto briggsandstratton.com and get a manual for that engine,
I have a 14.5 Briggs and Stratton engine on a Ranch King riding mower that will not start. After spraying starter fluid into the head, and air cleaner it fires for a second, but will not run. It is getting gas.....coil??? or something else?
The easiest way is to use a standard business card between the coil and the magnet part of the flywheel.
go to B&S site they have all gap setting for every engine they have made.
On Briggs and stratton or techumseh.com Just go to ask.com and type in the brand of product and it should come up.
The gap should be about .0125 in. (.3175 mm.) or the thickness of heavy paper.
Depending on year and model of motor. : You will find the contacts either under the fly wheel or there will be a pick-up on the coil.
Briggs & Stratton Ignition Coils have NO documented measurement for the primary windings, however readings of between 0.3 and 0.7 ohms are common. The secondary windings should measure between 2K and 4K (including the resistance of the spark lead)
check your coil out
You could have a bad coil/magnetto. Or it just might need to be cleaned (sanded to get the rust off of it and the flywheel.