With a model number , try the link below.
You can find the operator's manual for that engine at www.briggsandstratton.com. You will need to contact the manufacturer of the mower for the lawn mower owner's manual. Briggs and Stratton did not amke that mower, only the engine.
At briggsandstratton.com
you can goto briggsandstratton.com and get a manual for that engine,
64 oz per the manual.
Hi, The manual calls for 0.010 - 0.014" and a business card makes a good item to use to set it.
go to briggsandstratton.com
Go to managemylife.com and click on manuals.
.030 Refer to your owners manual of remove the old plug and just replace it with an identical plug.
Most Briggs and Stratton (B&S) engines of that size can have the spark plug gapped to 0.030" What I truly recommend is that you visit the Briggs and Stratton web site and download the engine owner's manual. You will need the Model Number, Type Number and maybe the Date Code. This information will be used to obtain the appropriate Owner's Manual. You can also obtain the IPL (Illustrated Parts List) for your particular engine. The web site is www.briggsandstratton.com - and you can take a look around for the manuals.
From the 1994 Briggs & Stratton Repair Manual - For Single Cylinder 4-Cycle Engines, it says the three styles are Flo-Jet carburetors, Pulsa-Jet carburetors and Vacu-Jet carburetors. Hope that helps.
Checking at your local public library for a manual on small engines repair would probably be the easiest way to find B&S and other small engine "blow-up" diagrams and repair guides. Suggestion: If you get the Model and Code numbers from your engine, you might find a manual specific to your engine.