Lincoln Electric IM435 K498 MAGNUM 200FM Fast-Mate Gun and Cable - Manual (Page 11)

D-1 MAINTENANCE D-1
MAGNUM® 200FM
g. Screw the gas diffuser onto the end of the gun tube
and securely tighten.
h. Tighten the set screw in the side of the gas diffuser
against the cable liner using a 5/64” (2.0 mm) Allen
wrench.
This screw should be gently tightened. Over-
tightening will split or collapse the liner and cause
poor wire feeding.
GUN TUBES AND NOZZLES
a. Replace worn contact tips as required.
b. Remove spatter from inside of gas nozzle and from
tip after each 10 minutes of arc time or as required.
c. To remove gun tube from gun, loosen socket-head
clamping screw in handle with 3/16” (4.8 mm) Allen
wrench. Remove gas nozzle and nozzle insulator
and also loosen small set screw in the diffuser
using 5/64” (2.0 mm) Allen wrench.
NOTE: Small set screw in the diffuser must be
loosened, otherwise liner could be dam-
aged when attempting to remove gun tube.
REMOVAL, INSTALLATION AND
TRIMMING INSTRUCTIONS FOR
MAGNUM® LINERS
NOTICE: The variation in cable lengths prevents the
interchangeability of liners. Once a liner has been cut
for a particular gun, it should not be installed in another
gun, unless it can meet the liner cut off length require-
ment. Liners are shipped with the jacket of the liner
extended the proper amount.
a. Remove the gas nozzle and nozzle insulator.
Loosen the set screw located in the side of the dif-
fuser with 5/64” (2.0 mm) Allen wrench (provided
with the gun).
b. Remove the gas diffuser from gun.
c. Lay gun and cable out straight on a flat surface.
Remove the liner nut from the connector end of the
cable and pull liner out of cable.
d. Insert a new untrimmed liner into the connector end
of the cable. Be certain that the liner busing is sten-
ciled appropriately for the wire size being used.
e. Fully seat the liner bushing into the connector.
Finger tighten the liner nut onto the cable connector.
f. With the cable straight, trim liner to 1-1/4” (31.8
mm). Remove any burrs from the end of the liner.
FIGURE 1
CAUTION