Lower unit question

[stourm]

Re: Lower unit question

BigB, I would be happy to email it to you but its 157 MB so not really a possibility. I will host it out somewhere though on a site and send you a link to where you can get it.

I have run into a snag though with my replacement. I can't figure out exactly how to get in there to the screw for the shift lever. I am assuming that you need to remove the screw that attaches directly to the long shift lever that runs from the lower unit up into the motor. The only thing I can find access to is that blue arm that stretches out to the side. Where the long rod itself comes up from the lower unit into the engine compartment seems completely inaccessible without removing a whole bunch of motor. Have any of you replaced a lower on one of these 140 Evinrudes that might be similar to mine? I assume that since most of you guys replace the waterpump every year that someone out there might have a good piece of advice for getting at that shift rod screw. Any help would be appreciated.

 

[stourm]

Re: Lower unit question

I found a post where it was mentioned that this model may have a double arm with a screw in the middle of the arm and if that screw is removed you can separate the arm with a screwdriver and free the shifter rod. I took a look at my motor, and it does have a double arm with a bolt in the middle of them, but there is also another screw/bolt at the end closest to the outside of the motor where it attaches to another arm leading upwards. I am not sure if I need to remove both of the bolts or even if removing that middle bolt will free up that shifter rod. Also, there is a silver cylinder that I think is a solenoid right there in the way and so are the throttle cables. If this is the correct bolt to remove to free up the rod I am not sure of the best way to go about getting to it. Thanks again if anyone can lend me some suggestions.

 

[stourm]

Re: Lower unit question

I went out again today and tried to figure out how to get to that screw and am still at a loss. I just can't get a clean shot at it, and am not entirely sure if I could get at it if I need to take off both of the bolts on that double arm or just the middle one. Is there anyone out there that can help me with this? This is a 1977 140hp Evinrude.

 

[Big Bubba]

Re: Lower unit question

Stourm,
How's the lower unit install going for you. I see that your having trouble removing the shift lever. Here is a web-site you can go to to see a parts breakdown of your motor. I like it becuase it contains all years and all horsepower motors out there and you can zoom in and blow it up to see the fine details of how your motor is put together. So here it is:

http://shop2.evinrude.com/ext/index.aspx?s1=4eadf5088fd0ed4c752d3d1043a19e18

Let us know how it goes. Bob

 

[stourm]

Re: Lower unit question

Thanks for the response Big Bubba. I had checked the shop.evinrude site and looked at the various layouts to try and determine how to get to that screw but wasn't able to find anything helpful. I am still stuck trying to figure out how to get that one screw/bolt out to release the shifter rod then I will be in good shape!

 

[stourm]

Re: Lower unit question

So I have some more information and questions for you guys and would appreciate any help you can offer. First, my motor appears to have the bellcrank design holding the shifter rod in place rather than a single shift rod screw. I am going to have to get to the center fulcrum screw and loosen it in order to spread the two arms of the bellcrank apart and free the lower unit arm. I have spent I don't know how many hours trying to figure out how to get to that screw without taking the large air screen off of the carburetors and might even have to remove the lower carb to get to it. Also, there is a solenoid in the way and I really don't want to have to remove that but I am not sure if I can get to it otherwise. Also while looking very closely trying to figure out how to get in to free that shift rod arm I noticed that the shift rod appears to be straight up and down. The replacement lower unit that I have has a slight crook/bend at the very end of the shift rod. I am now wondering if the bloody thing will even work. If the shift rod is the same length and the only difference between them is that crook at the end, then can I swap out shift rods as well when I replace this lower unit? I emailed the guy I bought the lower from and asked him to give me the model number of that motor, because he kept the silver plate with the model and serial numbers, and he emailed it back to me tonight. Can any of you verify whether or not this lower will fit on my motor? This is really turning out to be a nightmare... My motor is a 1977 140 HP with model number 140743S and the replacement parts that I have is from a 1981 140 HP with model number E140TRLCIH.

 

[Thunderhawk]

Re: Lower unit question

Heres what i recomend, Pull up both exploded views on "shop evinrude.com"
start to compare part views and #'s, looks close to me. 81, lower is mechanical shift, yours is mech/hydrolic. Looks like the shift rods are different. As long as the drive shafts have same spline on top, and cases line up you should be able to make it work.

Do some research; OMC time line:

early 60's= electriclaly actuacted lower

late 60's=elect/hydrolic lower

70's =cable/hydrolic lower

80's cable only

I doubt the lower cases have drastic changes, just how they are actuated.
use your imagination and make it work. stay safe and good luck.

 

[ezeke]

Re: Lower unit question

If the original gearcase has the two piece bellcrank shift lever, you will have to get the newer shift parts from another engine or the shift will be backwards with the newer gearcase.

I've never done the swap on a 1977 140 motor, but I think that you can make it work with those parts. You might want to send a PM to Dhadley, who will probably know for sure.

If you find a complete 1979 or newer outboard, you would be well advised to consider it; it will bolt right onto your boat and all of the wiring, etc. will work.

 

[stourm]

Re: Lower unit question

Thanks guys, I will send that PM to Dhadley and I hope he doesn't mind getting it. I really thought that the parts would be interchangeable but sometimes you just can't win. Maybe I can make it work, I dunno.