It is not 'out of adjustment'. They don't need adjusting although there is a small screw on the right side of the module for technicians to change the incoming water times if necessary. If the icemaker is not filling properly or overfilling, the water valve in back may be the problem.
The way to tell is to time the icemaker fill when you see it dump. The water valve should be energized for no more than 7 seconds. If the I/M still overfilling, the valve is weak in back. Sometimes over the years, sediment in the water supply causes internal valve decay. The valves are inexpensive and easy to replace. Icemakers only last an average of 5 years, so you are considered lucky.