Throttle control probem

[iggyw1]

I have an OMC set of controls on my boat. It is a single handle for forward and/or reverse, and it also has a small handle that you lift up on for starting the motor it says "fast idle" on it. It is stuck in fast idle. Did not have any problems in the past since I bought the boat. It has new cables bought last season and installed by a OMC dealer. I can push the fast idle lever back down but it seems to not be connected to the gas cable any longer. I can work the cable by hand at the motor end and it idles good, but as soon as I go forward and wide open throttle, then I back down again, the idle is way up there again until I bring it down by hand at the motor end.

What can I expect to see if I take the control box apart? Thanks!

 

[Vic.S]

I have an OMC set of controls on my boat.

What can I expect to see if I take the control box apart? Thanks!

Dozens of little bits and pieces.

Id look for a parts diagram before taking it apart You should find one in the OB Acessories list on the BRP parts website

http://epc.brp.com/Index.aspx?lang=E&s1=2f451736-5857-4482-8c47-ac45a2127ba6

 

[interalian]

Depends on vintage, but there was a fast idle interlock piece that broke with alarming frequency. The new part is improved to prevent the breakage. You can take the control apart with 3 screws from the back. The cables should stay with the halves. Once open, take and post a picture if the defect isn't obvious.

 

[Fed]

Over tightening the throttle cable adjustment at the motor end (trunnion) will cause the fast idle lever to lift.

 

[iggyw1]

Thanks to all of you. I don't know if I was clear on my original post, but the problem seems to be that the cable became disconnected from the fast idle lever somehow. The lever goes up and pushes the throttle cable back at the motor, making for a fast idle. When I push the lever back into the down position at the control box on the sidewall of the boat, it feels as though there is no longer any cable attached to it inside of the side mounted control box. There is nothing hooked up to it or so it feels. In order to get the fast idle back to a slow idle, I need to go to the motor itself and pull the throttle cable forward by hand and the idle will then be slow when I start the boat. When I take off and give the boat some gas, then back off on the gas when I want to go slow, the idle is racing until I shut the key off, and go back to the motor and make another manual adjustment on the cable at the motor ( pull it forward).

Can I easily look into the control box to see why the cable disconnected from the fast idle lever? If I take the box off of the side wall of my boat, will I see anything inside the box that will indicate if things are broken or just came disconnected? Thanks again!

 

[iggyw1]

Depends on vintage, but there was a fast idle interlock piece that broke with alarming frequency. The new part is improved to prevent the breakage. You can take the control apart with 3 screws from the back. The cables should stay with the halves. Once open, take and post a picture if the defect isn't obvious.

It is a 1982 motor and controller

 

[iggyw1]

Dozens of little bits and pieces.

Id look for a parts diagram before taking it apart You should find one in the OB Acessories list on the BRP parts website

http://epc.brp.com/Index.aspx?lang=E...7-ac45a2127ba6

Thanks for the suggestion. It looks like a lot of parts in the control box for sure. I just wonder if I can see anything if I just removed the box from the sidewall of the boat? Will I be able to tell if the throttle cable is disconnected to the fast idle lever? That's what it seems happened by the feel of things when I raise / lower the lever. There is no resistance and it feels like no cable attached to it any longer.

 

[redneck joe]

You will need to open it up. My 83 model needed a bit of customization when i put new cables on, if i can do it anyone can.

 

[bonz_d]

There are 2 different single lever controls, one has the warm up lever on top the other has it on the side. They are not the same inside. Which one do you have?

 

[iggyw1]

There are 2 different single lever controls, one has the warm up lever on top the other has it on the side. They are not the same inside. Which one do you have?

Mine has the lever on the top.

 

[iggyw1]

You will need to open it up. My 83 model needed a bit of customization when i put new cables on, if i can do it anyone can.

Im gonna try it. At this point, I have nothing to lose as I cannot use the boat the way it is now. Thanks for the vote of confidence!!

 

[interalian]

Mine's an '82 also. I'd suspect the interlock. Idle is controlled by a cam linked to the main throttle via the interlock. Throttle and shift cables are attached using a "T" pin for cables with pre-made ends, or a combination "T" pin with setscrew for plain cables.

 

[redneck joe]

You have same as me. You can do it.

 

[bonz_d]

Go to shopevinrude and look at any of the 1980's engines and you will find a parts breakdown or the remote.

 

[bobsquatch]

I am having a similar problem with my 1990 control box. I have two boxes (1973 and 1990) and both had the broken interlock which I replaced. My warm up lever pops up a little but can be pushed back down but the throttle throw is not right (too little movement). I think it is looseness internally and I will report back after I take it apart again. I remember some slop in the linkage that I thought I adjusted but I think it backed off again. Focus on the plate that locates the interlock. I believe it has to be clocked specifically.

 

[iggyw1]

Well guys, I sure appreciate all of your responses and input, and I am glad to report that I solved the problem today within a half hour. I took the control box off of the sidewall of my boat, and carefully opened the box by removing the three screws on the back of it. I noticed that when I moved the fast idle speed lever up and down, the cam did not move at all. The handle was moving o,k,. but the mechanism (the cam)? was not moving at all. I figured I would try tightening the screw on the pivot where the lever attaches to this cam, and the screw was VERY loose. I tightened this screw and that was the problem, A LOOSE SCREW!!

All there is, is a flat washer and the screw! Seems to me that there should be some type of splined connection or at least a lock washer there instead of just a flat washer and a screw that can come loose. I tightened it as much as possible, and I also put some loc-tite on the screw so it will not come loose again. (just a drop). I put the box together and re-installed it, and the problem is gone!! Thanks again all.

 

[redneck joe]

good deal