I am not sure what this engine is on. But, typically the tool or machine that the engine is on is what will determine the belts and pulleys, not the engine.
Pulleys are used in manual wells for drawing water from wells in a bucket. Drum-style pulleys are found in the rotating brush in an upright vacuum cleaner.
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.
go to briggsandstratton.com
At briggsandstratton.com
you can goto briggsandstratton.com and get a manual for that engine,
Go to managemylife.com and click on manuals.
It will show it in the Hanes manual
64 oz per the manual.
With tools such as pulleys, inclined planes, and wedges combined with extraneous body tiring manual labor.
B&S site
if made by murray contact briggs and straton they bought out murray it worked for me