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1. Press the "learn" button on the back of the motor unit. A small light should go on. 2. Within 30 seconds, enter a new 4-digit code on the key pad (surprisingly, you don't have to know the current code). 3. Press and hold "Enter" button until the light on the front of the motor unit blinks. That's it

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15y ago
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Q: How do you change the code on your craftsman 031d0431?
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