Yamaha dual control station adjustment

My boat has the Yamaha dual station control system (1992). I think my system is out of adjustment because sometimes after I put my lower station in gear and advance the throttle an alarm sounds. I can eventually move the throttles back and forth and get the alarm to stop. Sometimes I have to move the upper stations throttle to get it to stop.

I have 2 questions.

1. Is there an adjustment to stop the alarm from sounding?
2. Is there a manual that shows how to adjust the dual station system?

Thank you.

[boats.net]

May need to replace cables and adjust. Send me your email and I will send some information.

Ok, send to, dbye@comcast.net Thanks

[holeshot]

can i get that manual also when i put either bennical in reverse a buzzer goes off and the engine is shifted out of reverse holeshotonagsxr@yahoo.com