Miller Millermatic Spoolmate 185 Spool Gun Owner's Manual page 34

4-7. Cleaning Or Replacing Gun Liner
5/16 in
OM-1322 Page 30
Y Disconnect gun from unit first.
Head Tube
Remove nozzle, contact tip, and
adapter.
Lay gun cable out straight
before installing new liner.
Blow out gun casing.
Tools Needed:
5/16 in, 10 mm
10 mm
Remove liner.
To Reassemble Gun:
Install and tighten new liner.
Cut liner off 3/4 in (20 mm) (3/8 in
[9.5 mm] for aluminum) from head
tube.
Install adapter, contact tip, and
nozzle.
Ref. ST-800 797-C