1965 65 horse merc shifting problems.

[rolmops]

After attaching the lower unit of this ancient beast,it will shift fine for a few times but then it will pop out.The reason for this is the shift rod which has a lot of up and down play.After checking a manual,the I came upon a part that is called:"bracket shift shaft hold down"(part # 37824) I checked and indeed,I do have this bracket,but it is not connected to anything.
So the question is. How do I connect this shift shaft hold down bracket to the shift shaft and how far do I have to take the engine apart to do this?
As always, your advice and opinions are highly appreciated.

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

^^^

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

^^^

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

^^^

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

^^^

 

[cordell]

Re: 1965 65 horse merc shifting problems.

I believe I know. It looks like mine (1965 merc 1000) has a little rounded thing that slides over the lower part of the shift shaft. When the shaft turns it grabs another one of these little rounded things and turns it pulling the lock down. I will add a pic of the little rounded thing. So your lower unit has a forward, neutral, and reverse? Mine looks like forward only....

cordell

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

I believe I know. It looks like mine (1965 merc 1000) has a little rounded thing that slides over the lower part of the shift shaft. When the shaft turns it grabs another one of these little rounded things and turns it pulling the lock down. I will add a pic of the little rounded thing. So your lower unit has a forward, neutral, and reverse? Mine looks like forward only....

cordell

Thanks,I was starting to get desperate.
If your 1000 has a serial # that is between 1768404 and 2318585 it does have this bracket.It sits right under the carburetor cluster and is connected (somehow) to the shift rod and the lower cowling.
The part you are talking about is, I think at the lower unit end of the shift rod and locks the lower unit in place when you shift into reverse.
Your lower unit should have forward neutral and reverse as well.You can check this by disconnecting your lower unit and sliding a 5/32 8 point wrench or socket over the lower unit shift rod and while playing with the propeller,turning the lower unit shift rod.

 

[cordell]

Re: 1965 65 horse merc shifting problems.

Yes my serial numbers are 1894090 I took a few pics of the piece that moves the lock. In the clymer book it is referred to as lower reverse lock cam, a parts view has upper cam land lower cam. I dont have part numbers though. The pic is of the one that sits around the shift shaft in the lower unit. The upper looks the same but a mirror image, when you shift into reverse it turns the lower one witch turns the upper one and moves the lock into place, I can scan some of the clymer book if you want just let me know. I do have a question for you though, you obviously have reverse. Where is the shift cable for this, my linkage for throttle and shifting are both connected to each other. This lead me to believe I had forward only in this motor, or a dockbuster.

cordell

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

The shift rod hold down bracket that I am talking about is at the top end of the the shift rod.You should have it on your outboard.
If you take off the wrap around cowling and look at the top of the shift rod which sits just under the carburetor cluster you should be able to see it.It looks like a small piece of flat metal roughly 2 inches long and half an inch wide that is bent in a half circle with a round hole close to the top and a screw in the bottom which holds it to the top of the exhaust housing.

 

[cordell]

Re: 1965 65 horse merc shifting problems.

I got you now I have another thread in a diff forum right now about this part. Mine seems to have a piece attached to it that takes it around to the throttle arm. There it connects, this is why I was so confused about my motor and thinking it was a dockbuster. Seems we both need answer to this question. Here are the pics I have, you see the thing attached to the where the shift shaft comes into the cowling at. And the second pic is where it attaches to the throttle. How does one shift if it attaches to the throttle?

cordell

 

[cordell]

Re: 1965 65 horse merc shifting problems.

Is the pic I posted the correct area? If so I will try and get you some more detailed pics

I just learned that this shift shaft linkage is NOT supposed to be connected to the throttle arm as it is in my pic. The little brass fitting should be turned up the other way and have the throttle cable to it. Below where the shift linkage is it should have a cable also. Someone was trying to rig this thing up with only one cable I guess. Glad to have that stress gone..lol


thanks
cordell

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

Is the pic I posted the correct area? If so I will try and get you some more detailed pics

I just learned that this shift shaft linkage is NOT supposed to be connected to the throttle arm as it is in my pic. The little brass fitting should be turned up the other way and have the throttle cable to it. Below where the shift linkage is it should have a cable also. Someone was trying to rig this thing up with only one cable I guess. Glad to have that stress gone..lol


thanks
cordell

We are getting closer.
The throttle arm is not supposed to be hooked into the shifter.That is for sure.
I suspect that the previous owner tried to use your merc with an evinrude remote.The small block with the threaded bolt from the throttle rod that is currently hooked to your shifter,must be disconnected.Once you disconnect it from the shifter you will see that it can be turned with the threaded rod upward.that rod is what should be holding the throttle cable.You do miss 2 parts that should be on your shifter connection.
If you want some good pictures and parts numbers of what you should have,go to
www.ishopmarine.com ( I only use this site because of its parts lists and schematics)
Once there, go to parts list and from there into mercury.
As for the part that I have trouble with,it is on the top end of the shift rod shift rod.The shift rod is the rod that connects between the shift assembly on the top of the engine and the shifter at the bottom.It is about 20 inches long and goes straight down to the lower unit.
You can best see it when you look from the starter down towards the bottom of the carburetor cluster and the top of the shift rod.

 

[cordell]

Re: 1965 65 horse merc shifting problems.

In my first pic above I looked all around that area correct? The shift shaft comes into the bottom pan right under the carbs. My guess is the bracket is the piece that is sort of a moon shape....right? If it is something else I do not have it on my motor. The part 36 in the list is a Screw Hold Down Bracket To The Exhaust Extension Plate. I would guess that this is where the piece needs to connect, the Exhaust Extension Plate. All of these parts seem to be no longer in stock. OK the part I am talking about is labeled 40, the part in my pick. Going back out to my motor for a minute to see if I can locate anything. Below is the link where I pulled the diagram for the part you are talking about..

cordell

http://www.ishopmarine.com/ishop/js...&isForSupStore=false&cCatFilter=&eCatSupFldr=

 

[cordell]

Re: 1965 65 horse merc shifting problems.

Bad news..I have the part but it is just a part. No connection to anything.. It has a hole in the top that provides acess to the screw that holds it down, but that is it. I do not see where it should even go?????


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^^^^
is that it (side view)????

hope that turned out right!

cordell

 

[rolmops]

Re: 1965 65 horse merc shifting problems.

That half moon piece is the mystery part.Now we both have the problem.I will see if I can find some old timer who knows where this part goes.