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| 1989 OMC Cobra 3.0 Shifting problem (Reverse) https://www.smwebhead.com/phpBB3/viewtopic.php?f=2&t=2386 |
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| Author: | juancvillalobosj [ Tue Aug 26, 2008 3:27 pm ] |
| Post subject: | 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
Hi everybody; I need help with my just purchased 160 fredoom with a 3.0 OMC cobra, My question is regarding  Shifting, It goes into forward with no problem, I even wakeboard yesterday no problem, but the reverse is not engaging. Any tips. Thank you.
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| Author: | millhaven_nice_guy [ Tue Aug 26, 2008 4:08 pm ] |
| Post subject: | Re: 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
There is more than likely some adjustments that can be made at the shifter plate in the engin compartment. You should get a manual. I am sure that LouC will have soem better input shortly. |
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| Author: | 230 Mike [ Wed Aug 27, 2008 9:46 am ] |
| Post subject: | Re: 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
Yep, shift adjustment, may need some at the drive and possibly at the shifter. |
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| Author: | LouC [ Wed Aug 27, 2008 11:16 am ] |
| Post subject: | Re: 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
Ah yes the famous Cobra shifting problems, I had a problem with mine when I first got it too, what was happening was that it would shift into gear OK but would not come out of gear into neutral. I took it to a good OMC mechanic 4 years ago and its been shifting fine ever since. You could have a problem with the transom shift cable, ESA system, the bellcrank in the pivot housing and the shift rod height adjustment. The best thing you can do is find a good OMC mechanic, the second best thing is to look at the Stuart Hastings site on Cobra issues. His website tells you how to check the adjustment on the cable. Here's what I do to mine each season: I remove the drive in the fall to check the bellows, gimble bearing and u-joints. For instructions on how to remove, see http://www.crowleymarine.com look in product support under OMC Cobra drives. They also have to proper procedure to fill the drive with oil, it MUST be followed or else the drive can be ruined! Anyway once you remove it, you will see a linkage that comes out of the right side of the pivot housing, this is the shift linkage. You need to clean out the area around the bellcrank that is there and pack that area with OMC triple guard grease because if the gasket leaks just a bit, there will be crud in there that prevents the bellcrank from moving smoothly. Also make sure the idle is low enough (500-600 in gear in the water) to allow easy shifting. When you shift to neutral you should feel the engine slow down, thats the ESA system allowing the gear to release. Your problem is not that, rather not going into gear. Does it grind or just not go in? BTW don't let anyone tell you these drives are bad, the problem is that there are not a lot of mechanics that know how to set them up and some parts are getting to be hard to find, they were only made from 86-93. Mine is 20 years old, has been used in salt water at least 8 seasons, and shifts with 2 fingers, like it's supposed to. |
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| Author: | juancvillalobosj [ Wed Aug 27, 2008 3:10 pm ] |
| Post subject: | Re: 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
Thank you everybody, great info. |
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| Author: | juancvillalobosj [ Wed Aug 27, 2008 3:19 pm ] |
| Post subject: | Re: 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
Thank you LouC, the idle is low and the engine slow down in neutral, the gears just not go in? |
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| Author: | LouC [ Wed Aug 27, 2008 4:50 pm ] |
| Post subject: | Re: 1989 OMC Cobra 3.0 Shifting problem (Reverse) |
If the idle is low and it slows when shifting to neutral, sounds like the ESA is working. If the drive will not go into reverse at all, that sounds more like a problem with one of these things: the shift control on the boat, the transom shift cable and its adjustment, the bellcrank in the pivot housing, or the shift lever on the lower unit (adjustment). These units are not easy for a beginner to set up. Espcially if you have never worked on a sterndrive before. So that is why I say it's best to find a good mechanic who went to the OMC schools and knows them. The difference in mine was dramatic. I have been able to keep it working this way with just a little maintenance each year. |
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