Here since Briggs didn't minimum gap I used .010" or around .25mm as minimum from the single OHV repair manual for the top compression ring. They list .006 -.012" as standard ring gap.
OHV 120000 series ring end gaps
Ring End Gap (Top) .006-.010 in. (.15-.25 mm) .020 in. (.51 mm)
Ring End Gap (Middle) .012-.025 in. (.30-.51 mm) .020 in. (.76 mm)
Ring End Gap (Oil Control) .020-.016 in. (.51-.63 mm) .035 in. (.89 mm)
But Dave, you must have a mighty short work bench to step on the rings or is a lot more limber than most us. <lol> I haven't able to get my feet on the work bench since I was a kid.
