This is from the FAQ's section of the recipe section.
Q. Why do my bisquettes advance using the Advance Button, but are not properly advancing Automatically every 20 minutes?
A. Solution to the problem by Thunderfish (Terry); Clarification by Mike (Mr. Walleye)
First check the generator to make sure the movement of the shuttle, or the arm is not being obstructed by anything. If you don’t clean your generator debris from the bisquettes can build up in the tracks and prevent the shuttle from fully advancing. Also wires inside the generator can block the movement of the arm that pushes the shuttle, so make sure it has a clear path.
For the automatic time cycle to operate properly the motor must run counter clockwise. There are times the manual advance cycle will come out of synchronization with the automatic timed cycle. This could be caused by a voltage drop or some other electrical interference while the generator is running. When this occurs the automatic timed cycle will run the motor clockwise. This prevents the switch and contacts from activating in the proper sequence, and prevents the bisquettes from advancing. Generally the motor will self correct, but there may be times when it requires an owner’s intervention. (Also some have reported that when the motor runs clockwise the armature does not turn smoothly.)
To correct this problem, turn the generator on, and push the Advance Button to start the automatic timed cycle. This will start the automatic timed cycle at the beginning of its 20 minute cycle. This gives you the opportunity of not having to stand around. You can leave and return about 18 minutes later. In approximately 20 minutes the automatic timed cycle will begin to move the mechanism (you should hear it start to cycle) pull the plug on the generator while the mechanism is moving, then plug it back in. The motor should correct itself, begin turning counter clockwise the next time it cycles, and it should start advancing your bisquettes normally. Load two bisquettes; or if you have some Bubba Pucks load them instead to check if the generator is properly advancing the bisquettes.
If the problem persists, contact Bradley customer service.
Here also is a link to the FAQ's
http://www.susanminor.org/forums/showthread.php?481-Bradley-Smoker-FAQ-s&p=748#post748