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Transmission Switch

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srbranum View Drop Down
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    Posted: July-26-2011 at 10:29pm
Greetings all. Just back from our annual vacation. Put 12 hours on my boat. Got a question and hope you all can help me out.

My boat is the 1975 Skier with the OMC 225 option engine. Lately, I have been constantly worrried that I am goin to get stuck out on the water because when I go to start the engine, 50% of the time, the engine will not turn over because I believe the safety switch connected to the transmission linkage on the back of the engine is defective or something. If the switch is not in the exact neutral position, the engine will not turn over. Or, it may be something else. It has done this for years but it has got progressively worse lately. I usually end up jiggling the throttel, moving the battery terminals, tapping on the swith opposite the linkage, etc. until it starts.

Any suggustions?
I have to keep her running 'cause I can't afford a new one
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: July-26-2011 at 11:01pm
Scott.
The best way to check it out is with a volt/Ohm, meter to make sure the NSS is actually closing when you have the helm in the neutral position. Ohm it out and check your cable adjustments. I'd say they are off and you may need new ones!


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Post Options Post Options   Thanks (0) Thanks(0)   Quote srbranum Quote  Post ReplyReply Direct Link To This Post Posted: July-27-2011 at 1:09pm
Originally posted by 8122pbrainard 8122pbrainard wrote:

Scott.
The best way to check it out is with a volt/Ohm, meter to make sure the NSS is actually closing when you have the helm in the neutral position. Ohm it out and check your cable adjustments. I'd say they are off and you may need new ones!


Pete,
Why can't I just buy one of the NSS switches you told R-Dub about yesterday and just pop it in my boat? For ~$22, it does not seem worth my time to dx a 36 year old switch. Would have to paint it blue to keep it original to match the engine!!

Scott

I have to keep her running 'cause I can't afford a new one
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: July-27-2011 at 1:25pm
Scott,
I'd sure test the switch before you go spending the money even though it's only $22. The NSS really doesnt see much of a amp load so the contact life is real high. They are pretty reliable.

Yes, it's got to have the blue paint on it!!


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Post Options Post Options   Thanks (0) Thanks(0)   Quote BuffaloBFN Quote  Post ReplyReply Direct Link To This Post Posted: July-28-2011 at 2:33am
Originally posted by srbranum srbranum wrote:

I usually end up jiggling the throttel, moving the battery terminals, tapping on the swith opposite the linkage, etc. until it starts.


I got a chuckle on that one.

The battery terminals shouldn't move. Also check the barrel fittings on your throttle; particularly at the morse. You may have a worn one causing your fits.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote srbranum Quote  Post ReplyReply Direct Link To This Post Posted: July-28-2011 at 12:53pm
Originally posted by BuffaloBFN BuffaloBFN wrote:

Originally posted by srbranum srbranum wrote:

I usually end up jiggling the throttel, moving the battery terminals, tapping on the swith opposite the linkage, etc. until it starts.


I got a chuckle on that one.

The battery terminals shouldn't move. Also check the barrel fittings on your throttle; particularly at the morse. You may have a worn one causing your fits.
Your right. The battery terminals should not be loose but they are.

Do I have to remove the shifter off it's mounting position to check the barrel fittings? Again, I know nothing about the shifter. Any advice would be appreciated.

Scott
I have to keep her running 'cause I can't afford a new one
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BuffaloBFN Quote  Post ReplyReply Direct Link To This Post Posted: July-28-2011 at 2:58pm
You should be able to shine a light behind it(not very familiar with your boat). Sometimes a mirror helps.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote srbranum Quote  Post ReplyReply Direct Link To This Post Posted: February-07-2012 at 3:04pm
Greetings everyone. I have been out of touch for a while but plan on getting back to the website thanks to Keith for helping me with my new password because I forgot my old one.

I resurected this problem post because I never did anything about it until recently and thought ya'll might like to see what I found out. Do ya'll remember the guy who helped me buff my boat after my stringer rebuild(see my project)two years ago and is an authority(after Pete of course)? Well, I asked him to help me with this problem three weeks ago because I could not take another summer(My 23rd with this boat!!) wondering if I was going to get stuck out on the water. Here is what we did in my garage.

Bumped the switch to turn the motor over a bunch of times. Everything was ok. Left the key in the "run" position, motor off, and started checking voltage, connections, NSS, ect. At one point, he told me to turn the key off. I did so using my left hand from the passenger seat which is a different angle than using my left hand from the drivers seat like I do in the summer. The side of my hand accidently touched the black fuse holder directly above the ignition switch and BOY was it hot!!! That brought out the red flags. I don't think I would have ever had a reason to touch it in the summer but I accidently did this time.

Come to find out that the wire connector on the back of the fuse link was only half attched to the post and loose. My friend said that if the entire male and female connector is not fully connected, the load is too much for the small area it was connected to and got hot. This would explain why each summer, when it would not start, it was hot but eventually started after the fuse cooled down. Of course it always started after launching it or each morning because everything was cool to the touch. We left the key on for a good long time after this and it stayed nice and cool and the engine bumped over each time we tried it.

RULE OF THUMB: ALWAYS MAKE SURE YOUR ELECTRICAL CONNECTIONS ARE FULLY CONNECTED AND NICE AND TIGHT!!!
I have to keep her running 'cause I can't afford a new one
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bri892001 Quote  Post ReplyReply Direct Link To This Post Posted: February-07-2012 at 4:31pm
Good find, congrats on getting the fix
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: February-07-2012 at 4:51pm
Scott,
Welcome back and it's great you found the problem. Those .250" quick connect "sta-cons" can be a problem. Besides the inexpensive ones corroding, I've found them so brittle that the female side actually breaks. Once they heat up, the crimp at the wire can fail too. Your best bet is to replace them with some high quality ones. New tinned marine grade wire wouln't hurt ether.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrCC Quote  Post ReplyReply Direct Link To This Post Posted: February-07-2012 at 5:03pm
Scott,   As per Buffalo, I would still check your shift cable, especially behind the Morse to make absolutly sure your shift control arm has not worked loose.
And, probably wouldn't be a bad idea to inspect your Point Set after leaving the key on.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote eric lavine Quote  Post ReplyReply Direct Link To This Post Posted: February-08-2012 at 9:51am
98%......
"the things you own will start to own you"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote srbranum Quote  Post ReplyReply Direct Link To This Post Posted: February-08-2012 at 10:15am
Originally posted by eric lavine eric lavine wrote:

98%......

???98% assuming u mean agreeing with DrCC? thanks
I have to keep her running 'cause I can't afford a new one
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Post Options Post Options   Thanks (0) Thanks(0)   Quote eric lavine Quote  Post ReplyReply Direct Link To This Post Posted: February-08-2012 at 10:06pm
no, rule of thumb, 98% of all electrical problems are bad connections
"the things you own will start to own you"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: February-08-2012 at 11:19pm
And 98% of that is that someone was messing with it before you-
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Post Options Post Options   Thanks (0) Thanks(0)   Quote eric lavine Quote  Post ReplyReply Direct Link To This Post Posted: February-09-2012 at 10:11am
you got that right
"the things you own will start to own you"
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