I have one of those that looks similar but it's an 075, weighs a ton but I got it for a milling saw. Hard to start, probably is the carburetor. It's been sitting now for about 15 years or so, I bought all the milling chains and bars, and a mill. At some point I figured I could just go buy Douglas Fir Lumber cheaper than all the work it would take to mill my own. I remember the guy that sold it to me got it to fire up in the McDonalds parking lot in his shorts and tee shirt, and then we shut it down. I never got it to fire up again after that and about tore my shoulder off! Even with the compression valve on. Has to be a fuel issue, I worked on the coil and the coil gap, changed the plug, for some reason I never could get the carburetor to work, it might just be as simple as draining the old fuel, taking the carb apart, changing fuel filter, oil in the cylinder, etc... Then brand new fuel/oil and away it goes! Hopefully anyways. I know of a 36 inch diameter Maple I can go test it out on with a 36" Oregon bar and .64 gauge chain and sprocket, or I could set up the mill also. I would prefer douglas fir to Mill with, Maple's not much good for framing and the kind of projects I have. I prefer douglas fir, and even better high altitude tight grain fir if I can find some.
I like your post anyways, hope you find a buyer for your saw! I know a logger out here and he has 2 or more in his attic for "souveniers" or display items basically. He said to go buy a newer saw if I was really going to do a lot of milling. For him anyways, he is a logger, he uses them for logging big firs and most of the logging now is done with those excavators that grab the tree and chop it off at the base, then they cut it and stack it for the logging trucks. Not much use for a chainsaw anymore I guess for the smaller logs anyways. The bigger logs they still have to do with a chainsaw.
I am not a logger, I go get free firewood rounds off of Craigslist ads, and sometimes they have a big old log the tree service fell in the yard and it's free if you can haul it away! So every so often I need a really big saw, I was 50 when I bought the 075, and it might be too big now as I just turned 65. I got a 394 as well, after the 075 wouldn't fire up. It's a way lighter saw than the old 075. Sure would like to get the thing fired up again!
Hope it sells, I wanted to post here so I can come back and find this post again... Take care all.
(edited) .404 chain? .64 gauge? Been a long time now, all my huskies are .50 and 3/8" and not "Stihls" Lol... Sorry if I posted incorrectly.