125 evinrude lower unit problems

[poppins]

Well i had a thread prior to this one but couldnt find it. I guess lost in the abyss of threads. Well I was having a problem with my fly wheel not spinning, so someone suggest to lower the lower unit and see if it would spin then. well i lowered it and removed. The flywheel actually spins now. So my delima now is a frozen lower unit. How do i unfreeze this and fix my problem. i figured while I was down there, im gonna replace the water pump.I havnt done anything yet. I figured i would see what you guys said first. Thanks

 

[poppins]

Re: 125 evinrude lower unit problems

bump

 

[gejandsons]

Re: 125 evinrude lower unit problems

How about a little history on the problem.

 

[Walker]

Re: 125 evinrude lower unit problems

A frozen LU is probably not worth fixing. Good used units can be found at reasonable prices. If you want to work on it then you need to start tearing it apart. A manual is a must for that.

 

[poppins]

Re: 125 evinrude lower unit problems

where can i find a LU at a good price. any suggestions. The history is I bought this boat and motor from a friend. He hasn't ran the motor for at least a year. Before i did anything i tried to see if the motor would turn over. the motor is a 1971 125hp evinrude electric shift. The problem at first seemed that the prop would only spin one way but I was told that was a fail safe mechanism. Anyways I tried to start it by hand with rope and couldn't get the flywheel to budge. So somebody on here suggest taking the lower unit off. Now the fly wheel moves with no problem but im left with a broken or froze LU.

 

[poppins]

Re: 125 evinrude lower unit problems

bump

 

[gejandsons]

Re: 125 evinrude lower unit problems

The water pump impellor could possibly keep it from turning. I ran across this on a 50 Merc. Bought the engine used & found the engine had been run dry. For how long I don't know. It was long enough to liquify the resin on the water pump housing. When the engine was shut off, resin resembling an icicle formed thru a hole in the top of the housing. Once it hardened it locked the impellor.

 

[sledmonster]

Re: 125 evinrude lower unit problems

Poppins

To find your old thread go to the search function, then to advanced search, select search by user name, and put in your name. Its on the right of screen. It will bring any thread that you have posted in.

 

[poppins]

Re: 125 evinrude lower unit problems

thanks guys, I think im gonna replace everything i can for the LU.

 

[poppins]

Re: 125 evinrude lower unit problems

is there any particular part that might cause the freeze

 

[poppins]

Re: 125 evinrude lower unit problems

bump

 

[F_R]

Re: 125 evinrude lower unit problems

is there any particular part that might cause the freeze

Yeah, water in the lower unit. Causes all the bearings to rust. Generally a total loss, if that is what is wrong. But you have to inspect it a little bit to find out. Have you pulled out the drain plug to see what runs out?

 

[poppins]

Re: 125 evinrude lower unit problems

no i havnt pulled the plug. im guessing it is the hole that has a place for a flat head screwdriver

 

[gejandsons]

Re: 125 evinrude lower unit problems

That would be it. the lower one to drain & refill, The upper one to vent while draining or refilling.

 

[poppins]

Re: 125 evinrude lower unit problems

thanks guys ill check

 

[poppins]

Re: 125 evinrude lower unit problems

well guys i checked the plugs and went ahead and pulled them, there was no water that came out with the oil. the oil that did come out was very sluggish.The bad news is that i lost the bottom plug or its somewhere around the LU. Can you get a replacement plug? Also i think i read somewhere that my motor takes special oil in the LU. It a 1971 125hp evinrude. Thanks for all the help guys. Now that i didn't see any water , whats the next step?

 

[poppins]

Re: 125 evinrude lower unit problems

bump

 

[poppins]

Re: 125 evinrude lower unit problems

is it possible that the lower unit would not shift out of gear causing the flywheel not to spin. Would the power pack have anything to do with this? i have a hydro electric shift

 

[poppins]

Re: 125 evinrude lower unit problems

bump

 

[johnson1971]

Re: 125 evinrude lower unit problems

I have a 71 125 Johnson Electric shift and can tell you that the lower unit will allow the motor to turn over in gear. It goes to forward when no power is applied to the lower unit so that you can make it back to the ramp if something were to happen electrically. If there was water in the lower unit then you need to tear down to determine the extent of the damage. There is a hydraulic pump in the front of lower unit that is probably damaged and rather expensive to change. There are still service books available. Hope this helps. AND when putting new lower unit lube in make sure you get ONLY the OMC TYPE C Lube. Very thin lube almost like transmission fluid. The electric shift has exposed wiring in the lower unit that needs a fluid that won't conduct electricity. GOOD LUCK