OMC cobra interrupter adjustment

[i_build]

I have a carbed 350. I have a problem where I cant adjust the interupter so that it will work in forward and reverse. I have used the procedures in the SELOC manual which said to shift into forward full throttle and then use the black spin nob to adjust till the interupter roller until it is sitting at the low point of the V (switch is off). Then when I shift into reverse full throttle the roller on the interrupter switch is on the high point of the V causing the engine to stumble. I dont know what to do? I have read stuarts link over and over again but I dont think that addresses my problem.

My shift linkage is exactly the same as this one.

http://www.baylinerownersclub.org/gallery/album652/OMC_shift_cable_bellows_replacement_004_Small

The knob I am adjusting is the black one shown at the top of the picture.

Please help other than getting stuck in interrupt mode in reverse I am ready to enjoy my boat.

Thanks in advance.

 

[gcboat]

Re: OMC cobra interrupter adjustment

First off you need to ditch that Seloc manual and purchase a real OEM Cobra manual. They can be found on ebay or through a local dealer. The difference in price is worth its weight in gold. Here is a good read for you to start with, long but very well to the point:http://www.hastings.org/~stuart/cobra/

 

[i_build]

Re: OMC cobra interrupter adjustment

Thats the site i have been trying my hardest to understand. I am technical (I've rebuilt engines) It's the terms and lack of pics that throw me for a loop. I didnt see anything in that post that deals specifically with adjusting that interrupter switch (unless I missed it).

If the only solution is to ditch the seloc and by a good manual I will but I was hoping that someone would refer me to a different site other than the one you listed or tell me what to do specific to this adjustment. Not trying to say that post it isnt good... but it assumes you are familiar with terms and I personally am not there yet. I learned much more from that bayliner post I referenced in my first email because of the pics.

I appreciate any additional help. And thanks for the quick reply.

Even if I knew someone in the St Petersburg FL area that I could trust with this OMC I would pay them to come make the adjustment if nobody can guide me through this.

P.S. Other than this interrupter switch adjustment it shifts into fwd and rev just fine.

 

[a70eliminator]

Re: OMC cobra interrupter adjustment

All i can tell you right off is to make sure that the forked triangle looking thing with the notches is lubed and moves free, i have the correct manual and can outline the procedure but its going to have to be tomorrow it's too close to my bedtime, and there is alot more to it than the black knob on that upper cable.

 

[i_build]

Re: OMC cobra interrupter adjustment

I would appreciate it BIG TIME. I'm burning that SELOC I knew it was a bad sign when I found it on clearance at the back of West Marine. Thanks that gives me some hope. PLEASE dont forget me.

Also I cleaned and lubed the heck out of everything that moves on there including the pivot point of that fork.

 

[djanthony]

Re: OMC cobra interrupter adjustment

Here are the shift adjustment pages from the omc cobra 1989 OEM manual i copied: http://good-times.webshots.com/album/562042124PyDmVi . Press the + sign on the bottom of the picture and when you stand on the picture you can press + again for a really big picture. (you must have a account or register to see the biggest version of the picture)

Greets Anthony from the Netherlands

 

[chiefalen]

Re: OMC cobra interrupter adjustment

Welcome aboard anthony from the netherlands ^5.

 

[a70eliminator]

Re: OMC cobra interrupter adjustment

Djanthony thats exactly it, better than I could have done! Thank you.
Ibuild, pages 3, 4, 5, is probably about where your at.
I would copy all that info and file it. My book is a 1990 but just the same.

 

[i_build]

Re: OMC cobra interrupter adjustment

THANKS! Will report back progress

WOW now thats a manual! I can see that my release shift lever (Pg 4 pic 62 letter N) is different than the one pictured in the manual.

My lever has the slot on the bottom end is connected to the transom cable and the slot runs more verticle than the one pictured probably limiting the amount I can adjust.

I think I read on the hastings stuart site that my lever is the older model. I'm still going to give a shot at following the adjustment procedures in this manual. I have to buy one of these.

THANKS again!

 

[i_build]

Re: OMC cobra interrupter adjustment

Amazingly enough it was a misadjustment of that black plastic knob on the upper remote control cable. I went so far as to count the exposed threads on each adjustment point prior to walking through the procedures. Prior to adjusting the upper remote cable (as shown on page 3) I had a number of exposed threads towards the front of the engine of 15... however after adjustment the number of threads went down to 5. The throtle and lower transom cable adjustments were relatively the same +-1 thread. She is shifting very well now on the flush muffs and the interrupter is kicking in and out just fine. After the tune up I was able to get the idle down to 650 from 800.

Wish me good luck on her maiden voyage next weekend. My 1976 Stamas Hardtop 26'.

Thanks again guys.

 

[Gary H NC]

Re: OMC cobra interrupter adjustment

Good luck! Another reason to use a Seloc manual as knee pads or TP...lol!

 

[bruceb58]

Re: OMC cobra interrupter adjustment

Just for future reference, if you have a newer shift cable, its entirely likely that the shift interrupter won't even engage when you are out of the water. The reason us because the dog clutches are not under any load. As your lower shift cable gets older and gets harder to move is when it will cause the shift interrupter to work.

Also be aware that at some point, OMC came out with a redesigned shift module that does not use the overstroke switch so that adjustment won't need to be made with the newer module.