Tech note for 036 in 11.89, modification starting with serial number X39 108 850.
This places 232 xxx xxx about August of 1995. The 'x' is 1 for Germany, and 2 for the USA. Tech note on 026 shows that in 31.95 (31st week in 1995) there was a plug put in the cylinder of certain models starting with serial number x32 252 138. The serial numbers are roughly sequential and assigned by manufacturing period, so it doesnt matter if you look up a weedeater or a saw, the serial number will correspond to a date. If not, you can get a really good idea by comparing the serial number to the various stihl tech notes and IPLs. If Stihl can't or won't help and it was registered any dealer can tell you the first owner by going on-line to Stihl's Eservice system (every dealer was issued a log on recently).
