Coil air gap setting on stihl BG 85 C blower

The box the coil came in should have a paper card for setting the gap. It isnt written on the paper....it is the paper! Put it between the coil and the flywheel and bolt it up! If there isnt a gap paper in the box use a paper business card in its place. The stock gap size of 0.0125 inches is virtually the same as the 12 point paper used for a business cards in the US. I would recommend checking spark before reassembly just to be sure everything is right. Be safe and good luck!