First of all, go to my website and see all the parts, service manual (which is not a copy of the original, it is a service manual that I rewrote) and a rebuild service we offer.
http://petrolianacollectibles.com/eco%2090%20parts.htmYears ago I would take as many as 19 restored ECOs (again see this page of my website
http://petrolianacollectibles.com/eco%20air%20meters.htm) to Carlisle/Hershey. I would set them up all in a row, sooner or later some ??? would come over the meter grab the handle and start turning it like it was a slot machine and money would come out somewhere. I would run over, scream and give him a piece of my mind. I soon learned to display my meters without a reset handle on them.
So, looking at the pictures you provided, my first conclusion is that somebody cranked your meter up until it locked up.
Also, there appears to be missing parts, where is the arm that the hook on the spring attaches to? Also the brass ring around the screw is upside down. If some of these parts are missing, possibly you purchased a basket case. I have seen many meters that were used as a parts source.
I know how to take care of this problem, but it is not something that is easy to explain.
If you can't figure this out, we do offer a complete rebuild service where we return the mechanism to you, looking like it is brand new and calibrated to within one pound.
Jack Sim
