How do I adjust the drive roll and spool brake pressure?

To set spool brake pressure, grasp the spool and turn it while adjusting the spool brake thumbnut until a slight force is needed to turn the spool — do not overtighten. To set drive roll pressure, turn on the unit and feed wire against a wood board or concrete surface; the wire should feed steadily without slipping, then adjust the drive roll tension thumbnut as necessary. (Page 15)