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Drive Roller

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For initial setup or when changing wire spools, you’ll have to make sure the drive roller, wire guide, and contact tip match your wire diameter. Otherwise the wire won’t properly feed and the arc won’t stay struck. Once the wire is fed through the gun nozzle, install the contact tip, point the wire at a block of wood or concrete, and adjust the drive roller tension by turning the tension adjuster in until the wire exiting the gun nozzle exits freely without stuttering or stopping.