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Author Topic:   1983 Johnson 115hp lower unit removal
jbkb5252 posted 05-27-2007 10:34 PM ET (US)   Profile for jbkb5252   Send Email to jbkb5252  
I need some help here, i am trying to remove the lower unit on my Johnson Outboard. I think i got all of the retaining bolts, but where do i disconnect the shift linkage?
contender posted 05-28-2007 12:37 PM ET (US)     Profile for contender  Send Email to contender     
Under the carbs, have someone move the shift while you watch, you will see. Make sure the engine is back in netural, with the shift cable. You will need a long extension on 1/4 drive and universal, do not use the screw driver, also made need a tool that is like a grabber, so when you drop the screw you can get it back out. Change your entire water pump/and housing and lower gear oil, it is easy while you have the lower unit off. Do not forget to grease your spline on the drive shaft on replacement, also do your bolts that hold the lower unit on. Not hard just takes some time...good luck
jgkmmoore posted 05-28-2007 04:38 PM ET (US)     Profile for jgkmmoore  Send Email to jgkmmoore     
As above. Go in from left/port side of motor only.If the motor is tilted forward, the screw will usually fall out the front below the carbs in the lower tray.Kinda stinky, but usually about a 15-20 minute deal.Use a flashlight and a buddy...there ain't enuf hands.
Martino posted 05-28-2007 07:51 PM ET (US)     Profile for Martino  Send Email to Martino     
For my 2 cents worth, I think the bolt is a 3/8". I find the best tool combo to get at it is a 1/4" drive 3/8" socket, connected to a universal joint, on a fairly long extension, and as above, from the port side. I have heared tell that some folks remove the starter for better access, but I have never had to do that. I also suggest that you get you some really strong tape, like duct tape or heavy packaging tape. Once you pull the lower unit, wrap it around the shift rod, and make a loop to the front of the lower unit. The idea is that you don't want the shift rod to turn, as its adjustment is fairly critical.
jbkb5252 posted 05-28-2007 10:36 PM ET (US)     Profile for jbkb5252  Send Email to jbkb5252     
thanks for all the help, i have a buddy coming over tomorrow to help with this, i will be replacing the water pump and stuff, i won't be using the duct tape idea though since i am swapping out the whole lower unit for another one, which brings up another question, how do i figure out how to position the shift rod when putting on the new lower unit? (since it has probably been turned)or should this be taken to a marina to get done?
A2J15Sport posted 05-29-2007 11:03 PM ET (US)     Profile for A2J15Sport  Send Email to A2J15Sport     
The shift rod should point forward.

It is easier if the lower unit is in reverse (rod pulled up).

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