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I have a lower unit that the shift shaft spins. It worked perfectly 1 day ago and it hasn't done anything but lay on my shop shelf when I changed the impeller!
The Story:
I have a 1974 Mercury 850 (85hp) motor that I purchased with a bad lower unit. I went Friday and picked up another lower unit off of a 1979 Mercury 90hp motor. Yes, I am now aware of the gear ratio differences but that isn't my problem. When I went to pick it up it shifted perfectly through F-N-R by small clicks on the shift shaft. I brought it home, replaced the impeller and housing, go to install it and the shift shaft has some drag but just spins about 180 degrees. Doesn't change the direction at all. It appears to be stuck in Forward (turning the shaft clockwise from the top). I was scared to mess it up so I didn't force anything but if you turn the shift shaft counterclockwise it hits a hard spot, if you turn it clockwise it hits what feels like a tension load and if you press against it the prop stops spinning as if in Neutral but it doesn't click into place. I can't for the life of me imagine what on earth happened to it!
Any help would be appreciated.
Josh
The Story:
I have a 1974 Mercury 850 (85hp) motor that I purchased with a bad lower unit. I went Friday and picked up another lower unit off of a 1979 Mercury 90hp motor. Yes, I am now aware of the gear ratio differences but that isn't my problem. When I went to pick it up it shifted perfectly through F-N-R by small clicks on the shift shaft. I brought it home, replaced the impeller and housing, go to install it and the shift shaft has some drag but just spins about 180 degrees. Doesn't change the direction at all. It appears to be stuck in Forward (turning the shaft clockwise from the top). I was scared to mess it up so I didn't force anything but if you turn the shift shaft counterclockwise it hits a hard spot, if you turn it clockwise it hits what feels like a tension load and if you press against it the prop stops spinning as if in Neutral but it doesn't click into place. I can't for the life of me imagine what on earth happened to it!
Any help would be appreciated.
Josh
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