Cables tend to lock up if left unused for any period of time.
The “Tilt Tube” that the motor pivots up/down on it hollow, and is used to hold the steering cable.
The cable end is a solid rod and passes through the “Tilt Tube”
Cables lock up because of rust from the steel tilt tube. The rust expands and constricts the space between the cable end and tilt tube, thereby binding the entire steering system.
Lubricate the area where the cable end meets the tilt tube with penetrating oil.
Disconnect the steering linkage.
Scrape the rust off with a razor knife…
Use wire wheel to clean the anything else adhering to the cable.
Lubricate with lanolin or grease.
Steer the helm back and forth to free up and lubricate the surfaces.