Hobart Handler 125 Ez - Answered Questions & Fixed issues

Does the feed wheel move? If so adjust it's tension on the wire. If not, check for voltage at the motor. If there is voltage and no rotation, check for continuity of the winding, there should be less than 5000 ohms. If no continuity replace motor. If continuity- oil the shaft with light motor oil and see if it releases.If no voltage is measured at motor connections, the fault is on the speed control board. check the fuse, and if that is okay, check the SCR(s) and replace if faulty.

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.

If you can see the tip of the wire, grab it with a plier, and pull. If it comes out easily, you need to adjust the tension on the feed wheel under the cover a little bit. Do NOT touch that adjustment with power on unless you are wearing good gloves, even then there is still a danger of shock as that is the point the secondary of the transformer ties to. If it does not come out, open the cover,and look at the tension on the feed wheel- if it spins and no feeding, the welding wire may be jammed up or corroded to the liner of the handle. If it is all bunched up and tangled, that in itself may be the problem.

If you are using solid wire, you need to use a shielding gas like Carbon Dioxide or Argon. Otherwise you will not get *********** and the wire will leave random blobs.If you are using flux cored wire, you do not need the shield gas as the core is producing the gas shield. This should remedy it.

you may need a gun liner, if the liner is kinked the wire will not feed, causing a "birdnest" and if the wadded up wire touches the cabinet while the trigger is keyed it will get hot and try to weld wherever it is grounding e.g. the cabinet. try a liner first they are only 20 bucks

Hello, by pulsates, do you mean that the wire feed is what is pulsating while welding? If so, I have had this as well. I found that by turning down my feed rate, the pulsing stopped and the feed was smooth. I hope this helps. If not, contact me again.
joe

no unless its designed for gas

Hi there,

Happens sometimes when you're pushing on a rope.
I'm assuming a new spool has just been mounted.

You will need lineman pliers or some other type of heavy duty grippers

• Release the drive wheels
• Pull it back out from the spool side by manually turning the reel
• Snip the end of the wire if it is at all bent.
• Lay the feed hose out in a fairly straight line
• Re-engage the drive wheels
• Pull the feed trigger until the wire either makes it through or stalls
• If it stalls, release the trigger and use the pliers to work the wire back and forth until the it clears the snag area. Try not to twist or kink the wire
  
• Repeat the procedure until the wire has made it all the way through
  

That's about it

Best regards
Mike

You may have a short in the trigger leads that is pulling the weld current back through the leads and through the control cable. The short could be causing the breaker to blow. Can you open up the gun handle (disconnect it from the power source first) and check your trigger leads for cuts or nicks. Also check the outer jacket of the cable for cuts which may be deep enough to allow the current carrying copper to touch the embeded switch leads.

go to praxair ,air gas s j smith or any welding shop they can get it for you,

Check welding supply shops that sell Hobart welders.

Hobarts website has a service feature. They also have technicians that will help you identify the correct part number/s to ensure that you are ordering the motor you need. You can get the parts straight from them.

Fist look and check the contact tip. ensure the tip is the correct size for the wire being used as well as the wire feed rollers. the contact tip is were the wire collects the power,
If it's only 3 day's old send it back, dont star strippin it down or you Garantee will be made invalid.
ken

This has happened to me when I tightened the wire spool too tight in the welder,or I had a bad tip that caused some binding,and once my cord had a small kink that damage my wirefeed cord I had to replace.

lets go over the basics 1 do you have it set up ,the wire feader turned up at least to see if it sparks 2 do you have itset up at least to see if the amps are on enough to get a spark? try thoughs and see where you are,then turn those up enough to weld with . (make sure your wearing a good helmut .please you only get one pair of eyes!!!!!!!!! )hope this helps jojogunn.

If you are using flux wire and not shielding gas, your clamp should be positive and the wire should be negative. Heat is provided by the electrical arc that happens between the wire and the material. Your welder by itself does not pre heat the material and with 3/16 material you should not need to preheat anyway.

The electrical arc is kept consistent by adjusting the wire feed rate and the current applied. You will need to experiment with these settings to find what works best with your welder. For this welder and 3/16 material, I would suggest you start at the upper end of the current scale and about a third of the way up on wire speed. The welder might have a chart for these settings in the manual or inside cover.

If the wire feeds too fast, it will push the probe around and you will feel pressure as the wire feeds out. If the speed is too slow you will get large spatters and intermittent arcs. When properly adjusted the arc will sound even and consistent. The arc gap should always be about 1/8 of an inch.

To maintain enough heat for good penatration, do not move the probe too fast, work in a pattern and watch the weld pool (melted metal) and not the arc. Watching the weld pool will clue you in if you are moving too fast or too slow.

I hope this helps.

-Scott

If the wire feed on your Hobart 251 MIG welder won't stop when you turn it on, there could be a few possible causes. Here are a few things to check:

1. Check the trigger on the MIG gun: Make sure that the trigger on the MIG gun is not stuck or damaged. If the trigger is stuck in the "on" position, it will cause the wire to continuously feed.
2. Check the wire feed motor: The wire feed motor could be faulty or jammed, causing the wire to feed continuously. Try disconnecting the wire feed motor from the welder and see if the wire still feeds. If it does not, then the motor is likely the problem.
3. Check the wire spool: Make sure that the wire spool is installed correctly and is not jammed or tangled. If the wire is not feeding smoothly from the spool, it could cause the wire to feed continuously.
4. Check the wire feed control settings: Ensure that the wire feed control settings are set correctly. If the wire feed speed is set too high, it could cause the wire to feed continuously.

If none of these solutions resolve the issue, it may be best to contact a qualified technician or the manufacturer for further assistance.

This could be a PWM issue with the controller or the pinch rollers for the feed are worn or slipping,

check the brushes on the generator motor

check for correct tension on wire at feed