You purchase a Briggs & Stratton repair manual, and go from there.
Remove the valve covers and using the appropriate feeler guage rotate the crank until each valve is in the fully closed position and slide the feeler between the rocker arm and the valve stem. Adjust until the feeler fits snugly but can still slide in and out by loosening the jam nut on the rocker and turning the adjusting nut. You need to hold the adjusting nut still while you tighten the jam nut.
.002-.005 intake and, .005-.007 exhaust
.006 intake and.008 exhaust
You adjust the tappet. That's the thingy that pushes the valve down.
You can check the valve clearance with a valve clearance guide. Slide the guide between the valve. The guide will register the clearance.
.004-.006
005 in 007 ex
For the aluminum the intake valve clearance is .005 to .007 inches. exhaust valve clearance is .007 to .009 inches. Cast iron is - intake valve is .007 to .009. inches exhaust valve is .017 to .019 inches
.003 exhaust-.005 intake
0.004 - 0.006"
cawl sistem
For the aluminum the intake valve clearance is .005 to .007 inches. exhaust valve clearance is .007 to .009 inches. Cast iron is - intake valve is .007 to .009. inches exhaust valve is .017 to .019 inches
I assume valve clearance and it is 0.004".