TWECO
JAM NUT
HANDLE CAP
CONDUIT
LINER
CONDUCTOR TUBE
DIFFUSER
CONTACT TIP
NOZZLE
Mini MIG-Gun
CONDUIT LINER
No. 1 MIG-Gun
CONDUCTOR TUBE RETAINING NUT
CONDUCTOR TUBE
DIFFUSER
CONTACT TIP
NOZZLE
I N S T R U C T I O N S H E E T
Flexi-MIG™ Installation Instructions
This product contains chemicals, including lead, or otherwise
produces chemicals known to the State of California to
cause cancer, birth defects and other reproductive harm.
Wash hands after handling. (California Health & Safety
Code § 25249.5 et seq.)
Your Tweco Flexi-MIG will have one of four connections (detailed
below). When installing the Flexi-MIG, select the appropriate
Item
Recommended
Torque
Conductor Tube Jam Nut 160 in-lb.
Ball Point Set Screws 100 in-lb.
Conductor Tube Locking Screw 50-55 in-lb.
MINI-MIG GUN
1. Remove Nozzle, Contact Tip and Diffuser from existing
conductor tube.
2. Insert a flat blade screw driver into the slot on the Handle
Cap.
3. Twist Screwdriver to remove the Handle Cap.
4. Loosen Conductor Tube jam nut with wrench.
5. Unthread Conductor Tube from Front Connect or (not
shown).
Reverse procedure to reassemble. Recommended torque for
Conductor Tube Jam Nut is: 160 in-lb.
NOTE
Due to a difference in length of the Conductor Tubes,
the Conduit Liner should be replaced when using the
Flexi-MIG.
connection instructions to match your MIG-Gun.
Remember that during installation, the tube must be as straight as
possible to make it easy to slide the conduit through the tube.
Since the Flexi-MIG Conductor Tubes are ¾” to 1” longer than a
comparable standard bent tube, the conduit in the MIG-Gun should
be replaced when changing to the Flexi-MIG.
WARNING
PROFESSIONAL #1 MIG-GUN
1. Remove Nozzle, Contact Tip and Diffuser from existing
Conductor Tube.
2. Loosen Conductor Tube Retaining Nut.
3. Unthread Conductor Tube Retaining Nut from Front Connector
(not shown).
4. Slide tube off over conduit.
Reverse procedure to reassemble.
Due to a difference in length of the Conductor Tubes,
the Conduit Liner should be replaced when using the
Flexi-MIG.
NOTE
CONDUIT LINER
Spray Master 350 Amp
CONDUCTOR TUBE
LOCKING SCREW
CONDUIT SET SCREW
CONDUCTOR TUBE
DIFFUSER
CONDUIT TIP
NOZZLE
CONDUIT LINER
GUN HANGAR
CLAMP
CABLEHOZ
HANDLE HALVES
CONNECTOR BLOCK
ASSEMBLY
BALL POINT
SET SCREWS
CONDUCTOR TUBE
DIFFUSER
CONDUCTOR TIP
NOZZLE
No. 4 MIG-Gun
SEPARATOR
PROFESSIONAL #2 THRU #4 MIG-GUN
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WO R L D H E A D Q UA R TE R S : 16 05 2 Sw in gl ey R id ge R oa d, Su it e 30 0 • S t. L ou is , M is so ur i 63 01 7 U. S. A.
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1. Remove Nozzle, Contact Tip and Diffuser from existing
Conductor Tube.
2. Re mo ve the four screws holding the handle halves
together.
3. Remove clamp from the Cablehoz behind the Connector
Block Assembly.
4. Loosen the two Ball Point Set Screws in the Connector Block
Assembly until Conductor Tube is loose in the block.
5. Pull Conductor Tube Gas Nipple (not shown) out of Cablehoz
inner tube. (A slight twisting motion will assist in removing
the Gas Nipple from the Cablehoz.)
6. Remove tube from the Connector Block Assembly.
7. Keep the Separator and the copper stranding even with the
Connector Block Assembly.
8. Slightly wet the outside surface of the open tip of the Gas
Nipple on the Flexi-MIG.
9. Slide the Gas Nipple through the opening in the Connector
Block Assembly.
10. As you push it through the block, insert the Gas Nipple into
the inner gas hose of the cable.
11. Twist the tube assembly until the nipple is fully inserted into
the cable gas hose.
12. Retighten the Ball Point Set Screws. Recommended torque
is 100 in-lb
13. Replace the Clamp.
14. Tighten the clamp on the outer cable about ¾” behind the
Connector Block Assembly.
15. Reassemble the handle and trigger.
NOTE
Due to a difference in length of the Conductor Tubes,
the Conduit Liner should be replaced when using the
Flexi-MIG.
SPRAYMASTER MIG-GUN
1. Remove Nozzle, Contact Tip and Diffuser from existing
Conductor Tube.
2. Loosen Conduit Set Screw on top of handle.
3. Loosen Conductor Tube Locking Screw.
5. Slide Conductor Tube off over conduit. (Twist slightly to ease
the Conductor Tube from the Connector.)
Reverse procedure to reassemble. Recommended torque for
Conductor Tube Locking Screw is: 50-55 in-lb.
NOTE
Due to a difference in length of the Conductor Tubes,
the Conduit Liner should be replaced when using the
Flexi-MIG.
Form No.: L200041
Revision: C
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