This is how the ice maker works:
A harvest cycle is initiated when the mold where the ice cubes are frozen drops in temperature below about 16 degrees F. That triggers the mold heater to begin warming the mold. At the same time, a motor turns the plastic fingers and starts pushing on the ice cubes to force them out. When the ice cubes come loose, the fingers push the cubes out into the storage bin. The motor pushing the fingers has a couple of micro-switches on the end with some gears. As the motor turns and forces the cubes out, it closes one of those micro-switches which opens the water solenoid valve to refill the mold with water and start a new batch of ice. When the motor completes it's revolution, another micro switch opens and stops everything till the freezer once again cools the mold to 16 degrees F and starts another harvest cycle repeating the process. The colder the freezer, the more often a harvest cycle will occur.
To ensure all water is out of the tube between the solenoid and the mold, taking the tube loose from the solenoid will siphon it out. Taking the feed line to the solenoid loose and blowing it out is my preferred method of finishing winterizing the ice maker. You'll have to trace the tube back to it's source where there should be a shut-off valve.
Don't use the pink stuff or you'll have a mess to clean up next spring which will require making and throwing away several batches of ice before the ice cubes are consumable again.