So I recently found a 034av super in pieces out in my late grandfather’s machine shed in a box. The serial number on this saw is 223117556. Upon inspection of the crankcase I found it was cracked on the bottom on both halves. So I ordered a used replacement 034av crankcase off EBay. The serial number on this one is 115424199 so far upon reassembly everything matches right up except for the clutch brake cover. The one off the saw I have does not fit the new crankcase and I can’t seem to find one that actually matches this new crankcase. This has me wondering if my new case is a different model ,but I have no way of running the sn# and being it was just a case I have no pn# identifier. If someone knows how to decode the serial number to determine model that would be awesome.