I don't know that model number, but Stihl makes the best. Mine is over 20 years old, and still sawing.
I checked everywhere..no luck, but you can check the link and go direct to STIHL Customer Service on-line and ask them. The Model 034 is not in their "collection", but they certainly know the history and facts.
edgers, water drainage pumps, chainsaws, weed eaters, rototillers