Agree with Ripcuda.
But----
If you have no rubber bellows on the steering (or shift) cable end, you are in need of a new cable. Without that rubber, water intrudes into the cable causing rust and eventual failure. If you move the nozzle (at the nozzle) and hear a crunching or grinding noise; it is time for a new cable. Another problem is the sleeve at the end of the cable can slip out of its crimp. Again; time for a new cable. Fix this. It could get you killed.
This is not a special SeaDoo cable. It is a heavy duty control cable made by Teleflex and others. About $180 online.