Hello people do anyone know the stem clearance of valve on a 14.5 briggs engine. Model 287707 thanks grrtwo

Hi,
You have one of the very first 28 cu. in OHV engines. The valve clearance is 0.004 - 0.006" on both valves.
Not my way of doing it, but this video shows how in a way that does definitely work!
YouTube - Lawn Mower Repair Valve Adjustment
Peace,
Clarke