Old vs. new tank style. Stihl made a LOT of changes with this upgrade. Different air filter, compensating carb with the "snorkel", etc. The easiest tell tale is the round vs. rectangular knob. and as you found out parts don't interchange. I think that they switched this on later 036s and carried it over to the MS360.View attachment 1236591View attachment 1236592
Cast into the cover: 1125 141 1003.
Can someone tell me, please, what I have here? Late 036 cover, or 036 Pro, or....?
I bought it for my 036 with the round knob, which it doesn't fit.
Thanks,
Roy