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Set the wire speed knob to position 5 or 6. Keep the torch cable as straight as possible and press the
torch switch. The wire will feed through the torch.
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When the wire has fed through, switch welder off, unplug from mains.
a) Take torch in left hand, slide the contact tip over the wire and screw back into place.
b) Grasp gas cup in right hand, push onto torch head and turn clockwise only. Do not turn gas cup anti-
clockwise, as this will damage the internal spring.
c) Cut wire so that it is just protruding from the cup.
Setting wire tension. Adjust the wire tension by rotating the wire tension knob. Turn clockwise to increase the
tension and anticlockwise to decrease the tension. See (1) in fig13.
IMPORTANT: Too little or too much tension will cause problematic wire feed and result in poor welding.
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Tension between rollers is checked by slowing down the wire between gloved fingers. If top feed roller
skids the tension is correct. Use as low a tension as possible, too high a tension will disfigure wire and
result in a blown fuse.
Clutch adjustment. Note: It is essential that the clutch is adjusted correctly.
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Once the wire is fed through the torch, switch on the machine and set the wire speed to maximum.
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Depress torch switch and release quickly. If the spool overruns it indicates that the clutch is too loose.
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Tighten the clutch nut located in the centre of the wire spool holder with a spanner (fig.7-D) and test the
machine as above until the wire stops over running. Note: DO NOT over tighten the clutch as this will
cause wire feed problems and strain the motor.
TURNING/CHANGING THE DRIVE Roler. (See fig.14) Ensure that the wire diameter used, is matched
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by the correct groove size in the drive wheel and the correct tip size on the torch as well as the correct
torch liner. Failure to do this could cause the wire to slip and or bind.
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Referring to fig.12, open the wire feed mechanism by pushing the locking/wire tension knob (1) down to
the right allowing the pressure roller carrier (2) to spring up revealing the feed roller.
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Referring to fig.14, loosen and unscrew the black feed roller retaining knob (C) and put to one side.
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The roller carrier (A) is keyed to the main drive shaft and the drive roller (B) is keyed to the carrier, see
below. Place a finger onto the end of the drive shaft to prevent the carrier moving and slide the drive
roller off the carrier with your other hand.
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The size of each wire feed groove is printed on the edge of the roller on the same side as the groove.
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Turn the roller over to use the other groove or use a roller with different sized grooves as required. The
groove to be used should be positioned furthest away from you to be in line with the drive path.
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Check that the key in the carrier (A) is properly seated in its slot. Ensure that the slot on the inside face
of the drive roller (B) is aligned with the key and slide the roller back onto the carrier.
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Screw the black roller retaining knob (C) back on to the end of the drive shaft and tighten.
MI03088-01
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