on my 216 dist cap there is no # 1 marked, but the manual says to bring # 1 up on the compresion stroke (remove #1 spark plug hold thumb on hole while cranking motor feel air blowing out your there) turn motor a little more and see the flywheel mark and pointer line up(inspection hole right rear of motor)now if dist.is still in it should point to #1 or in your case 11 oclock if 12 oclock is the tab you talk about. just before or to left of the front cap hold down.
this should be in your manual and maybe told better. good luck
