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Editing Step 4 —

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Hold the chuck and twist the motor clockwise and then pull apart to separate the motor from the chuck.

The chuck has a loose black washer that holds five gears in place. Be careful not to separate the washer.

When reassembling the chuck and motor, take note that the red wire in the back of the motor is farthest from the top of the assembly. In other words, the red wire should be closest to the trigger.

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