Briggs and stratton OHV single cylinder engine (311777)... which valve is exhaust, top or bottom?

SOURCE: need valve adjustment for a for a briggs and straton 31p777-0348-

Try .003-.005 on the intake, .005-.007 on the exhaust.

SOURCE: Briggs and Stratton OHV V-Twin 24hp repetitive valve adjustment

Try pulling out the choke a little, if it stops backfiring the mixture is too lean, check the intake
pipes at the cyl head and also the plastic runners to the carb for leaks.
Dennis in Chicago

SOURCE: Briggs and Stratton 22hp v twin OHV smoking badly

First thing to do is pull your dipstick and check for broken or missing O-ring also as you pull it, look to make certain that it was seated properly and all the way locked. If either condition exists, you will be leaking into the crankcase which will cause your symptoms

SOURCE: oil appearing at exhaust, smokey, briggs and stratton lawm mower.

You will need to replace or clean the air filter, and probably the spark plug. Do not operate the mower for some hours to allow the oil drain (inside the engine). Check oil level and fill it if necessary. Some oil remaining in the exhaust should be burnt next time the lawnmower operates.You will see smoke at the beginning, that will be normal (burnt oil). Hope this helps!

SOURCE: My Briggs and Stratton 24hp twin OHV engine

Gotta find it