Day: July 30, 2025

Here’s the problem, the stihl setting gage seems to set the air gap too tight, like 0.004″ measured between the ignition module arms and the flywheel magnets using a feeler gage set. It seems as though the center coil pick up on the ignition module has a wider air gap. Now my question, what is the proper way to measure an ignition module air gap?