68 Johnson 20 Shift Linkage Question..

loudfisher

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Sep 4, 2011
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Hi All- New to this posting stuff, so please bear with. thanks for the great info I've found on this board, it's been a great help to me on my various boat restoration projects. I've always found what I've needed on old threads, but now I'm stumped.
My 20 horse Johnson, (1968 fd22m) is finally running well, and nearly complete. My last problem is with the shift linkage. First, it wouldn't stay in gear, so I replaced the cable, and then the clutch dog. It worked great in the tub; the dog was definitely worn. In the river, though, it began to act up again. I'm not getting full range of motion after the shift arm. I see the arm move through it's entire arc, but it seems that the shaft that goes under the powerhead is not rotating fully, as if it is not connected firmly to the shift arm. there is a zerk at the end of that shaft, and it doesn't appear to be rotating as much as the shift arm. Could this shaft be slipping?
If so How to repair??? I did tighten the screw on the clasp, but it didn't solve the problem.
Any ideas??
thanks in advance !! this is driving me crazy.
 

lindy46

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Joined
Nov 27, 2008
Messages
3,886
Re: 68 Johnson 20 Shift Linkage Question..

Drop the lower unit, and grasp the upper shift rod through the oval port on the side of the leg with a long-nosed plier. While holding the shift lever firmly in place, see if there is any up and down play in the shift rod. There should be none.
 

loudfisher

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Sep 4, 2011
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Re: 68 Johnson 20 Shift Linkage Question..

Thanks for the replies, and, oh, sorry about the blank post- my connection failed me at the wrong moment. I'll try to check for play in the shift rod, that makes sense if I need to check for play under the powerhead.
thanks again, Ill let you know what I find.
 

loudfisher

Recruit
Joined
Sep 4, 2011
Messages
4
Re: 68 Johnson 20 Shift Linkage Question..

YaY!! I checked for play on the shift rod by holding the shift handle and securing the rod, then vice versa. There ws total disconnect. Found a screw missing on the shift handle that secures it to one of two holes on the shaft bracket. DOH! put one in and bingo, I'm good.
thanks for the replies
Matt
 
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