, : Move the CRANK! counter to your Contraption deck's next sprocket and crank any number of that sprocket's Contraptions.
To crank a Contraption causes its ability to trigger and go on the stack, similar to what happens at the beginning of your turn normally.
If the CRANK! counter is on Sprocket 1, it moves to Sprocket 2. Sprocket 2 to sprocket 3, and Sprocket 3 to Sprocket 1, as normal.