I just got a used Hefty, no manual. It has the gas selanoid and contactor. I figured out how to set up the feed rolls for .045 Dual Shield wire that I intend to run & I found the CC/CV switch. I think it has a Tweeco #3 gun, from what I can make out on the label. The liner looks big enough for the .045 wire [it was last used with .035 solid] and I probably have some .045 contact tips amongst My stuff.
This machine is from the mid '90s, not overly beat up & pretty clean inside. I removed the case liner and there are no obvious problems with the components.
I plan to use this with My Ranger 9 in CV mode.
What size nozzle should I use with .045 Dual Shield?
If anyone has any tips or service suggestions I appreciate their input.