The valve clearance on a Briggs and Stratton 21 HP OHV engine is typically set to 0.005 inches for both the intake and exhaust valves when the engine is cold. It's important to check the specific model's service manual for any variations or specific adjustments. Proper valve clearance ensures optimal engine performance and longevity.
Yes
0.004 - 0.006"
cawl sistem
http://www4.briggsandstratton.com/miscpdfs/RNT/Engine%20Specifications%20Chart_ms3992.pdf
.004-.006
0.006"
Briggs doesn't publish engine compression specs, but 120 is good. 100 is okay. 80 is lousy.
the intake valve is bigger
The valve clearance for a Briggs and Stratton 406777 engine is typically set to 0.004 to 0.006 inches for both the intake and exhaust valves when the engine is at top dead center on the compression stroke. It's important to adjust the clearance when the engine is cold to ensure accurate measurements. Always refer to the specific service manual for your engine model for the most precise information.
Briggs says on a cold engine, .005 on intake & .007 on exhaust. Wider on exhaust to ensure you don't burn a valve.
005 in 007 ex
0.004" would be correct. See the YouTube link attached below for the procedure.