3. Unfasten 6 screws and detach the cover to expose the PCBA, motor
assembly, and battery pack.
4. To detach the battery connection wire, press the clip on the connector and
then pull it out. NOTE: Wrap the connector immediately with insulating tape in
order to avoid short circuit caused by contact of both wire terminals.
5. Unfasten the 3 screws to release the battery compartment cover. Remove
battery pack from the compartment.
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