Hi Thomas, that plug, once removed exposes the air vane governor allowing you to quickly adjust it without needing to remove the whole recoil. You can use a pair of forceps to adjust the spring tension.Hi Tom
I just got #3 07 in and i noticed this one is a little different
Do you know what the hole is for on the recoil with the plastic plug?I also noticed that there is a piece of rubber between the front wrap and recoil.This is the only one with the hole,the other two have a different recoil with the vintage Stihl logne of the other two has a full wrap.
Was going to get rid of a duplicate,but technically they are all different so i may have to keep them all
Thanks Thomas
Hope this helps!
Warm regards, Tom