Adjusting Control Cable on 704 - The Hull Truth

Steve · 10-19-2004, 07:09 AM

Just purchased new Teleflex extreme cables. Replaced with same length cable
Routed in same way manufacturer did. Yamaha twin binnacle. Twin F115's on a Renaissance cat. When the shift cable is disconnected the throttle shifts smooth on both engines no problem forward and reverse. When the shift cable is connected forward is stiff on both motors, but can go in and out of gear. When the shift cable is connected going into reverse is almost impossible to go into gear and increase (engage) throttle. I have spent several hours adjusting the ends that fit onto the motor end with no luck. It has gotten some what better, but still very hard to go into reverse. Do you have any idea what I might be doing wrong. The old cables had worn outercases (rusted out), but still shifted with ease. Last night I removed the throttl cable to see if that was binding when I shifted same problem. Is there any adjustment in the 704 binnacle? Is there any adjustment to the extreme teleflex cable itself (not just the threaded end)?. I think all the problems are with the shift cable adjustment. I have put both ends in neutral put on cable and still have problems. Any help would be appreicated.

Thanks Steve

SIM · 10-19-2004, 09:55 AM

Steve,

The 704 has a friction adjustment inside of the box . See this THT thread..... Yamaha 704 Control Adjustments

Are there alot of twists and sharp bends in the cable runs? Each progressive one will make it harder to pushpull the cable.

With the shift dis-connected from the engine is it hard to move the shift mech inside the engine? It should move fairly easy. Have someone spin the prop while attempting this, or you can try it while the engine is running...... but be careful!

Andy

Steve · 10-19-2004, 12:16 PM

Andy thanks for the quick response. Yes the shifter mechanism in the engine moves freely with the cable off. I found another post of yours were you said to thread the ends of the connectors down 8-10 mm on both sides, that helped out quite a bit. The old cables though had smoother operation. No tight bends in the cable. I do understand about the friction control screw, that did not make a difference. My main question is do you think I just need to keep fine tuning the connector ends, or is there any stops or limit adjustments in the 704 itself.

Thanks again Steve

SIM · 10-19-2004, 12:35 PM

With the cables dis-connected on both ends, can you freely move the cable in and out?

Yes...... there are stop and limit adjustments but they do not need to be adjusted it they were correct before.....

With the shift cable disconnected from the engine but connected to the shifter, does the shift throw back at the engine*from f-n-r look correct? Do the mounting points for the cables and the dimensions from there to the tip of the cables (old and new) look the same?

Andy

Steve · 10-19-2004, 09:40 PM

Will check if cables move in and out freely with both ends off.

Agree that the adjustments in the binnacle are ok since unit was working before I removed old (rusted) cables.

Will look at the old cables and compare to new ones.

Thanks again. I will check these out on Wed. and get back with you on Wed night.

Steve

Steve · 10-21-2004, 07:18 AM

Andy, The shift cable moves freely when disconnected at both ends as well as the throtle cable. I then hooked up the shift cable at the engine, but not at the binnacle and moves easily by hand FNR. However the throttle cable has alot of back pressure on it. I saw on the motor a split spring assembly that has a screw (anti tamper) that looked to me that might adjust the tension. I tryed moving the screw all the way in and then out, but no change. I think that screw controls the idel of the engine?? I finally reset all the ends between 8-10mm and adjusted the shift cable one turn at a time. FInally got them both to shift in and out FNR and throttle to work propery. Have not put the boat in the water. Shifting is as good as before if not better. Now my only question is what screw did I adjust. Did I cause any possible problems? What RPM should the engine idel at out of the water on a hose? How about in the water?

Thanks again for your help. Steve

SIM · 10-21-2004, 09:41 AM

Steve,

Not to sound harsh here but........the anti-tampering screw(inverted Torx screw #25)*are not meant to be adjusted. There is no adjustment for the throttle plates that will put more or remove tension. Most of those adjustments are for synching the throttle plates. Do you have a service manual? If you moved those screws, the only way to get them back in synch is by using a vacum gauge*or the Yamaha special tool Vacu-mate which allows you to adjust all the plates in shot.

I would not bother setting idle speed unless it was in the water. The water is need to provide the correct amount of back-pressure.

Andy