Shift Shaft Removal 20HP

Scode68

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So I need to pull my shift shaft (95-20hp-OG113) and the manual if kind of vague. All it says is to pull it out. I really don't want to damage the boot if it can be salvaged cause it looks to be in good shape. How is the boot held in, is it glued?
20220702-100153.jpg
 

Scode68

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So, does this boot just push into place or is it held in with some kind of sealer or glue?
 

flyingscott

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If you pull the shift shaft out of the lower unit you have to take the lower unit apart to get it back in. What are you trying to do.
 

Scode68

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I guess I need to remove the water pump assembly again in order to pull the shift shaft? Does the assembly hold the Shift shaft retainer in place?

I'm installing the Bay Manufacturing short shaft to long extension kit. The lower rod in this picture is the shift shaft extension.
20220704-181109.jpg
 
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Scode68

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If you pull the shift shaft out of the lower unit you have to take the lower unit apart to get it back in. What are you trying to do.
I was under the impression it slides out and back in. At least thats what I get from the 90-826883R2 JUNE 1998 manual.
 

flyingscott

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I was under the impression it slides out and back in. At least thats what I get from the 90-826883R2 JUNE 1998 manual.
No there is a stepped cam on the bottom of that shift shaft. A spring loaded pin sits against that, if you pull the shift shaft out the pin slides back and almost impossible to get it back in. Besides that extension looks like it is for the top of the shaft. .
 

flyingscott

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No, the shift shaft is not straight. The Bay Manufacturing instructions say if the shift shaft has a bend in it then the extension will have to be installed at the lower end.

I cant reinstall the shift shaft like here? https://forums.iboats.com/threads/s...-setup-for-mercury-outboards-verified.665210/
That is for a rotary shift motor and that is to line up the splines. Your motor shifts on the up and down. There is a stepped cam down there that is next to impossible to get back in. It's your motor do what you want. FYI the bearing carrier is a left hand thread. Good luck.
 

Scode68

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Advice is what I'm looking for and you are helping me. So, in order to get the shaft back in properly I have to pull the drive and propeller shafts?
 

flyingscott

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Pull it out you will see what I mean
IF you get extremely lucky you will get it back in.
 

Scode68

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Pull it out you will see what I mean
IF you get extremely lucky you will get it back in.
Whats the proper way to get the shaft out and back in then? Can I accomplish this with regular tools or are specialty tools needed?
 

Scode68

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Anyone else have some input on this cause I would like to get this thing back on the water? I've rebuilt auto engines and transmissions so I'm somewhat mechanically inclined but outboards with the need of specialty tolls is a handicap. Do I need to go to a shop and have then do this for me?
 

flyingscott

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It depends on which bearing carrier you have. Or you could buy a factory manual.
 

Scode68

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I have a PDF copy of this manual.
20-25-Cover.png

Page 6A-14 shows a tool to remove the bearing carrier.
20-25-6-A-14.png
 
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Scode68

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I dont really think it's clear. Just says to pull the shift shaft out but doesn't outright say to pull the gears first.
20-25-6-A-18.png

Shaft looks like this one and is why I have to install the shaft extension on the bottom instead of at the top.
20-25_Shift_Shaft.png
 

flyingscott

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#41 in your diagram is the shift cam. Against that sits a spring loaded pin and once the cam is out the pin pops out farther than it was. So putting the cam back in is a pain in the butt, it's a strong spring. That's why if you take the bearing carrier out the prop shaft moves out and also the pin. This makes room to put the shift cam back in.
 
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