O.P.A.S. and O.T.A.S.......
Both these systems are used on the Seadoo's. They aren't asked about often, I guess because they are normally not an issue of concern.
The O.P.A.S., Off Power Assisted Steering is a system on the PWC's that is used to provide stability when releasing the throttle at high speeds. As we all know, when you have no nozzle pressure, you have no steering. O.P.A.S. uses two little small rudders attached at the rear of the ski, port and starboard. They are only found on ski's.............
The O.T.A.S., Off Throttle Assisted Steering is a system, mostly found on boats. For that matter, I didn't know the skis even had it. The O.T.A.S. system is designed for maneuvering. It's mostly used while docking. The principle of the system is to increase the throttle, adding nozzle pressure for better turn managment, which is initiated by the steering wheel.
When you start a gradual turn, motor rpm is at idle, the nozzle begins the turn. If you need to decrease the radius of the turn, you turn the steering further. Once you are at the end of the wheels turning radius, the O.T.A.S. system increases throttle to tighen the turn even further.
As for trouble shooting it............Mine is manual. It's got a "Y" off the throttle cable that connects to the steering wheel. Simple mechanics. You say yours is going through some kind of electronics. I've yet to read about this type O.T.A.S. or have any other member inquire about it. I will be looking further into it but at the moment, I'll have to see if another member can help you.:cheers:
