Installing The Wire Spool - Everlast PowerMTS 251Si Operator's Manual

Hide thumbs

Table Of Contents

Table of Contents

Section 2

To load the spool of wire:

Loosen and remove the hand nut on the spool carrier by turning it

counter-clockwise.

Align the locating pin with the hole on the wire spool (if present).

Slide spool onto the shaft. Make sure wire is unwinding from the

bottom of the spool.

Adjust de-spooling tension by turning tensioner located under the

hand nut on the spool carrier.

Lightly spin the spool. If it free-wheels more than 1/4 turn, tighten hex

screw. If it does not free-wheel at all, loosen tensioner until it free

wheels 1/4 turn.

Reinstall the hand nut so the spool is retained securely.

Locate the end of the wire and clip the bent end of the wire so that it

will feed through the wire feed mechanism smoothly. Carefully hold

the spool of wire with one hand so the wire will not despool. Proceed

to instructions listed below: "To thread wire from the spool proper-

ly through the wire feeder into the gun."

NOTE: An adapter/spacer will be needed to use 8" spools. Contact

Everlast to purchase one, if you do not have an adapter.

To change the polarity of the MIG gun: Unscrew the screw from the (+) terminal. Loosen

top screw, do not remove completely. Swing copper buss bar up so the hole in the (— ) terminal

lines up with the hole in the buss bar. Reinstall screw into the ( — ) terminal. Tighten both screws.

To thread the wire from the spool properly through the wire feeder into the gun:

Install the MIG gun as instructed in "To install the MIG gun (torch)" above. Loosen the top idler roller tensioner, rotating the black tensioner knob counter-clockwise.

Flip the tensioner down, toward you, releasing the carrier arm that holds the top drive rolls.

Raise the carrier arm up. Inspect the drive rolls to make sure that each roller's groove size matches the wire diameter. Also make sure correct type of drive rollers are used. i.e.

Flux-Core drive rolls use special serrated rolls. (Top driven rollers do not have grooves and are not to be removed).

Reversal of the lower drive rollers to select the right size drive groove may be necessary. To reverse the lower drive rolls: Remove the slotted screws securing each lower drive

roll. Pull each retaining spacer. Remove the outer ring of the drive roll and flip the drive roll over. The drive roll is actually made of two pieces. Hold the inner assembly of the

drive roll on with one finger (to prevent it from slipping off the shaft), while slipping the outer "rim" of the drive roll off with the other hand. NOTE: Both inner and outer parts of the

assembly have locating keys. To reinstall: Line up the outer rim of the driver rolls keyway with the locating key. Reassemble and tighten each roller. M ake sure

both rollers are matched in size. Also make sure the locating keys are in place and have not pushed or slipped out of their grooves during assembly. Lightly coat the inner

mating surfaces with light lube if necessary to prevent future seizure. Do not lubricate the surfaces of the drive rolls or wire slipping and erratic feeding may result.

Follow instructions above: "To Load Spool of Wire." Make sure the spool of wire is loaded correctly so that the wire unrolls from the bottom of the spool (counter-clockwise).

Thread the wire into the coiled guide and over the grooves in lower drive rolls. Thread the wire fully through until it threads into the gun section 4"-6". Lower the upper drive rolls

into contact with the lower drive rolls, keeping the wire securely fixed in the grooves of the lower feed rollers. If needed, use a screwdriver with a fine blade or small pick to keep

wire from moving out of the grooves until step 6 is completed. Make sure one last time that the correct groove has been selected.

Raise drive roll tensioner back into place. Tighten it slightly so the wire will feed. Notice markings on tensioner for future reference.

Remove the contact tip from the torch. (Not Shown). Hold the torch cable and gun as straight as possible, in direct line with the unit so feeding of the wire through

the gun liner is smooth and easy.. Press the gun trigger to feed wire until the wire exits the end of the torch. Reinstall the contact tip over the wire over the wire and tighten it.

To prevent bird nesting or slipping of the wire, adjust the tensioner clockwise until the drive rolls will not slip when the wire comes into contact with a hard surface. The wire will

curl up on end while feeding under power. If you over-tension the wire, you will increase the chances of bird nesting of the wire (balling up of the wire or curling of the wire

around the drive rolls), so it is best to tighten just until wire stops slipping and is able to curl up. Extra tension can deform wire and prematurely wear the drive rolls. Slowing of

the feeder may result as well. Remember not to test on any metal attached to the work clamp to prevent the wire from arcing while performing this test.