cable travel-need more 79 140

[mnw001]

I have a 79 140 with surface mount contols. Just installed a carb and got it running well. The throttle cable adjuster is all the way forward on the cable and it won't pull the throttle arm back quite far enough to reach timing retard stop bolt which is set to 0 to -2 degress to get the best idle.. I also can not get enuff travel to reach the max throttle stop. which I adjusted by the the book. If I move the adjuster to get full throttle my idle goes up. have tried adjusting the sync screw on the carb but it doesn't help because unless I can pull the timing back I don't get the idle I want which is about 800 in neutral in a barrel. <br />So question is there anyway to get more travel from the control box or does anyone else have any Ideas? Thanks for all your help <br />one more question could this be affected by the throttle cam adjusting screw. I may have moved this at one point during the long process of trying to get this thing to run right but I don't remember for sure?

 

[Silvertip]

Re: cable travel-need more 79 140

Sounds like you have been skipping around with these adjustments and not performining the link & sync process properly. If the throttle worked ok before, there is no reason it shouldn't work now. Disconnect the throttle cable and when the link & sync is done, then you adjust the trunion on the cable so the end of the cable aligns with the trottle lever.

 

[mnw001]

Re: cable travel-need more 79 140

I bought this thing at an auction an have never run the boat. I don't think it was ever right. I have spent a lot of time doing link and sync and I think I understand it.

 

[Walker]

Re: cable travel-need more 79 140

Sounds like you cable is stretched to me. But check for worn bushings in your control box before buying cables

 

[piniongear]

Re: cable travel-need more 79 140

I will send you some more info Fishslayer. I think if you do the setup according to this info and the stuff you already have, everything should adjust out and sync just right. I have been thru this before on my 140 and by following the instructions it came out correctly. After all the linkage is adjusted and set up, then the trunnion on the end (engine end) of the throttle cable gets adjusted so that the connector pin will line up with the throttle lever hole.<br /> You have plenty of movement available in your throttle lever to go from idle to full throttle (and beyond). You need to get the linkage adjusted correctly first, then the cable will hook right up. Personally, I do not think you have a stretched cable. I also am of the opinion that your barrels and the other moving parts inside the throttle lever would have to be extremely worn (out) to have any affect on the movement of the cable. Think about a stretched cable...they get longer, not shorter...check your mail...piniongear

 

[Walker]

Re: cable travel-need more 79 140

O' contrare. I know of what I speak. It doesn't take much wear in the control box to limit the throw, and stretched cables will indeed cause you to have the problems you are having.

 

[mnw001]

Re: cable travel-need more 79 140

ok Guys <br />Thanks for all your help <br />The good thing is that the motor runs well with the cable unhooked. I am going to go thru evrything today by the book and I'll let you know what I figure out..<br />Thanks again and especially thanks to you Blake I'm d/ling now.

 

[rodbolt]

Re: cable travel-need more 79 140

hello<br /> who made the controls? if its a universal it may be set up incorrectly.<br /> most control cables are made of a hardened stainless solid core wire. if you can stretch it your superman. however the cable sheath is a nylon tube surrounded by suport wires sometimes the core tube will wear through. an easy test is tomeasure the cable stroke then measure the amount of stroke needed. if ya aint got it it wont work, ever. if you have the morse universal check what hole was used. sounds like there is to much wear in the cable or the box was set up incorrectly.

 

[mnw001]

Re: cable travel-need more 79 140

its an omc control I assume a 79 model which is a slimmer model than was used earlier such as on the 78. I will dissasemble the box today and see if I can tell what's going on inside of it.

 

[mnw001]

Re: cable travel-need more 79 140

Just wanted to let youguys know that I got the boat running very well. I turned the throttle cam adjuster one turn closer to the carb and that gave me full throttle or at least within a few thounsands of full throttle. the idle was perfect when I tied the boat to the dock and put it in gear at about 650.. Thanks again for the help.