Napa 83-320 not feeding the wire properly. The wire spool and feeder are not in sync

If the wire feeder is not working, it's possible that one or more of the wires you reconnected are not in the correct position or may have come loose. Double check to make sure all the wires are securely attached and in the correct order.
It's also possible that the wire feeder motor itself may be faulty or damaged, especially if it was not working properly before you opened it up. You could try testing the motor with a multimeter to see if it is getting power and functioning correctly.
Finally, make sure that the wire spool is loaded correctly and that the tension on the wire is set properly. If the wire is not feeding correctly, it could be due to a problem with the spool or tension.

The only things that come to mind after your checks are a spool not set in completely, a stripped spool or a spool drive shaft failure of some kind.
so...make surenthe spool is not stripped, its seated all the way and if so is the drive shaft for the spool and/or feeder pulleys all moving. If nothing is moving anywhere but you hear the actuator motors turning inside you have a warranty issue.

If it is an MiG welder, there are a few possibilities. 1- The roller traction adjustment of the feeder roller is incorrect or not properly locked. 2- Your weld makes the wire stick to the metal and holds back the feed causing backspooling. If this is the case, try increasing the welding amp or voltage.
3.-Low quality welding spool.

Be sure the spring is not bound up with grass or mud. It has to recoil to push the head down so the line doesn't continue to shoot out.

the obvious, yet sometimes overlooked problem is to check if the wire feeder rollers.do you have the proper tension set?(did you do the wire test when you shot the wire to see if it bends or stops)

If the feed wheel mechanism does not move, check for voltage at the motor. If there is none present, you need to look for a failure on the control board, which may be a fuse, or even one of the SCR's. Often an 8 amp 200 volt type.

Have you checked the tension on the wire roll feeder? Inside the unit where the spool is, the wire feeds off of the spool, through the feed roller, this roller has a tensioner spring on it that keeps the wire flowing steady, and also check the spring tension the keeps the spool from turning freely, keep this loose as can be, and just enoughthat it doesn't unwind on it's own.
There are so many things that it can be, but this is a start.
Good Luck.
Paul

if motor and feeder roller is turning. check that their is the correct pressure on feeder roller for the wire thickness you are using and that it is in the right groove on those rollers.
also check the tip it may have splash buildup which is affecting the wire feed.
hope this helps

Check for the correct tip size first. Too small or too large portal will jam wire in the tip. Check for correct wire speed for amperage used, too fast or too slow coupled with the distance from work piece will do the same. Check for wire condition, if the wire is rusted......you do the math. Check polarity......DECEP vs. DECEN for the type of materials welded. ARE YOU USING AN ANTI-SPATTER AGENT? Build-up of spatter can cause early arc. Lastly, is the wire tension too high? The wire should not feed at all even with the motor drive unit running if the wire has fused to the tip, that leads to a kinking of the wire behind the feeder (spool side).......check also the backlash adjustment to keep the wire from spinning off the spool under load. Too tight will cause the outer cladding of the wire to strip off the core wire which will cause the core to adhere to the tip.

try readjusting your feed rollers(tension),plus make sure that your feed rollers are set for the right size wire your using.