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GENERAL MAINTENANCE
This welder has been engineered to give many years of trouble-free service providing that a few very
simple steps are taken to properly maintain it. Before performing any maintenance or service on your
welder, read and understand all warnings in this manual. Unless instructed otherwise, always unplug
the welder prior to maintaining or servicing it.
1. Keep the hood closed at all times unless the wire needs to be changed or the drive tension
needs adjusting.
2. Keep all consumables (contact tips, nozzles, and gun liner) clean and replace when
necessary.
3. Replace the power cord, ground cable, ground clamp, or gun assembly when they become
damaged or worn.
4. Periodically clean dust, dirt, grease, etc. from your welder. Every six months or as necessary,
remove the side panels and air-blow any dust and dirt that may have accumulated inside the
welder.
MAINTAINING THE WELDER
Welding Gun Liner
The gun liner is intended to provide a replaceable, unrestricted path for the welding wire to pass
through the gun assembly. Over time it will accumulate dust, dirt, and other debris. Replacement is
necessary when these accumulations begin to restrict the free flow of wire through the gun assembly.
When removing or installing a gun liner, care must be taken not to kink or otherwise damage it or
replacement will be necessary.
To Replace a Gun Liner
1. Turn the VOLTAGE switch to the OFF position.
2. Remove the nozzle and contact
tip from the gun.
3. Remove the welding wire from the
gun assembly.
4. Remove the four (4) phillips head
screws from the gun clamp.
5. Remove the gas line from inside
of welder
6. Remove the electrical connections
from inside of welder.
7. Remove the gun assembly from the front of the welder.
8. Lay out the gun assembly in a straight line.
9. Remove the four (4) screws from the handle of the gun assembly.
10. Unscrew the liner from the brass block and remove it from the gun assembly.
11. Slide the new liner through the gun cable, fasten it to the block and re-assemble the handle.
12. Reinstall the gun assembly into the welder.
Contact Tip Maintenance and Replacement
The purpose of the contact tip is to transfer welding current to the welding wire while allowing the wire
to pass through it smoothly.
1. Always use a contact tip stamped with the same diameter as the wire with which it will be
used.
2. If the wire burns back into the tip, remove the tip from the gun and clean the hole running
through it with an oxygen-acetylene torch tip cleaner. This is especially important to do after
an aluminum wire burn-back.
3. Over time, the hole in the contact tip will become worn by the wire passing through it.
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