Eastwood MIG 135 Assembly & Operating Instructions page 9

1. You do not want to set too much tension on the Pressure Adjuster as it will tend to deform the wire. Just enough to feed the wire
without slipping.
2. Once the wire has emerged from the tip of the MIG Gun, turn the machine OFF and replace the Contact Tip and Nozzle.
SHIELDING GAS FLOW ADJUSTMENT
After connecting your Shielding Gas Regulator, the gas fl ow rate needs to be adjusted so that the proper amount of Shielding Gas is
fl owing over your weld. If there is too little gas fl ow there will be porosity in your welds as well as excessive spatter, if there is too
much gas fl ow you will be wasting gas and may affect the weld quality. The included regulator has 2 gauges on it; the gauge on the
left is your fl ow rate while the gauge on your right is your tank pressure.
1. Open your Shielding Gas tank valve all the way.
2. Adjust the knob on the regulator to ~30 CFH.
3. Turn on the welder and trigger the MIG Gun switch which will start the gas fl ow.
4. As you trigger the MIG Gun switch you will notice that as the gas fl ow starts the needle on the gauge drops to a steady reading.
The reading while fl owing is the value you want to read.
5. The gas fl ow should be set to ~20 CFH while fl owing. The CFH (Cubic Feet per Hour) scale is the inside scale in red on your fl ow
gauge. 20 CFH is the most typical fl ow rate but it may need to be adjusted in some cases depending if there is a slight breeze or
some other instance where additional shielding gas is required to prevent porosity in the weld.
6. When fi nished welding remember to close the gas valve on the bottle.
CHANGING THE DRIVER ROLLER
The wire feed drive roller on the drive motor has 2 grooves, one for 0.023" (0.6mm) welding wire and another for 0.030" (0.8mm) or 0.035"
(0.9mm) welding wire. Your MIG135 comes with the drive roller installed for using 0.023" (0.6mm) wire. In the event that 0.030" or 0.035"
welding wire is to be used, the Drive Roller needs to be changed.
FOR EASTWOOD MIG135 WELDERS WITH KEY WAY STYLE
DRIVER ROLLER (FIG. H)
1. Turn off the welder and unplug the welder from power.
2. Unlock the Pressure Adjuster (Fig. H1) by pulling it towards
the rear of the welder.
3. Lift the Rocker Arm (Fig. H2) up and out of the way.
4. Remove large center thumb screw holding the Drive Roller
in place (Fig. H3).
5. Slide the Drive Roller off the shaft.
6. Determine which size wire is going to be used and slide the
drive roller back onto the shaft by aligning the key on the shaft
with the keyway on the roller. NOTE: The stamped marking on
the side of the drive roller indicates the size of the groove on
the opposite side of the roller. The groove closest to the drive
motor is the groove that will be used. If setting up to use 0.035"
(0.6mm) wire, the '0.6' stamping should be facing the user
when installing it.
7. Tighten the set screw on the Drive Roller and lower the Rocker Arm (Fig. H1) back into place.
8. Lift up on the Pressure Adjuster (Fig. H1) to put back in place and adjust as necessary.
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FIG. H FIG. H
H3
H1
H2
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