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Background
In the event that you are having issues with your microARC 4, and discover that pins are burned on your power connector, follow the document below for instructions on how to fix your unit and get back to making chips!
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Tools
T10 Torx Screwdriver
Metric Allen Key Set
#1 Phillips Screwdriver
Crescent Wrench
Magnetic Dish
Cutting Pliers
Motor Replacement
Power off the machine and disconnect the MicroArc cable from the machine bulkhead connector. Remove the retaining ring from the back of the motor, the button head screws from motor cover, and loosen the cable gland from the cover. Set all screws in a magnetic dish.
Feed the motor cable through the cable gland until you have approx. 2 feet (50cm) of cable left. Set the cover to the side. Remove the 4 screws securing the motor to the housing. Remove the 6 Torx screws holding the drive adapter to the motor flange.