There might be a few different steps to follow when changing your torch head, depending on the brand and model you’re using. But the general steps are listed below:
Ensure the welder is shut off and plugged out from the power outlet.
Remove consumables from the existing torch – this includes the nozzle and back end.
Grab the torch end and firmly pull down on the handle, exposing the connection between the torch and the power cable.
Use an adjustable wrench to loosen the connection between the torch head and the power cable.
Remove the torch head.
Screw the new torch head onto the power cable and tighten it with a wrench.
Once tightened, push the handle over the torch head.
Change consumables to fit the new head.