40 hp johnson electric shift Model # 40ES 69R

[bulldogtodd]

My old Johnson 40 hp electric shift keeps jumping out of gear when given throttle and its getting worse. Any suggestions? Thanks!

 

[jimmbo]

Welcome to iboats

What oil are you using in the Gearcase?

 

[bulldogtodd]

At first i put the normal lower unit oil but after some reading i found out that is requires a special blend for the ekectric shift. I had a bottle that was in the boat when i got it but theres no telling how old the oil is. I drained the wrong oil and replaced it with the old oil that came with the boat. It still did the same thing, I have some new oil ordered thinking maybe that old oil that was in the boat may have lost some of its viscocity or something. My next step is draining and putting new oil in and giving it another shot. Im hoping I didnt damage anythhing putting the wrong oil in. I appreciate u responding and will be appreciative of anymore advice or ideas u van give me. tks

 

[jimmbo]

The proper Oil is marketed by BRP as Precision Blend. It used to be called Type C. Be aware though, that there are some 3rd Party Oils claiming to be Type C, but are not Compatible with Electric Shift .
The proper oil is less Viscous than 75-90 gear, being that there will be some residual Oil left after draining, you will likely have to change the oil a few times to reduce the Contamination.
If the case continues to slip, check for damaged wires, You will need to drop the gearcase to examine the portion of of the wire that resides inside the exhaust housing(damage occurs if the engine is starved of water). In some cases the Hubs and Springs have become, best described as Glazed, and need a bit of cleaning. The system is simple in design and quite Reliable.

There is also the Possibility of the Switch in the Control due to the design, making interment contact as the Throttle Lever is sliding against it

 

[bulldogtodd]

I ordered it from Harvard marine. It Evinrude/Johnson premium blend. It was about 27 bucks a quart and specifies for electric shift motors. Are you familiar with this oil? Did I get the right stuff? Did I do any damage by putting the wrong oil in? It ran fine for a little while and then gradually got worse. I pray the oil is my problem. Thanks for being so kind and helping me with this issue. I really appreciate it.

 

[jimmbo]

BRP bought what was left of OMC(Evinrude/Johnson), so you have the correct Oil.
Here is a video of what goes on inside
View attachment Applied Physics - YouTube.mp4

 

[bulldogtodd]

Thats pretty neat. Thanks for the video. One more question. How much oil does the lower unit take. I just fill from the bottom hole until it comes out the top hole. Doesnt appear to be very much. Maybe a cup full. Does that sound right?

 

[racerone]

No need to do any flushing , just fill with the premium blend.-----The issue is with the forward spring and clutch.----Stop running it and initiate repairs.----Easy fix in my opinion.----I developed a method to repair this about 45 years ago.

 

[bulldogtodd]

Do u happen to have a picture or video of what u speak of. Forward spring and clutch? I'm fairly good with mechanics on cars etc but this outboard thing is new to me. I appreciate all the help you can give me. Tks.

 

[racerone]

Look for ---" top secret files "---on this site.----There may be help for you there.----I repair motors , know nothing about posting videos.

 

[bulldogtodd]

Where are u located if u don't mind me asking? I live in Mississippi.

 

[racerone]

1600 miles away.

 

[bulldogtodd]

Wow I appreciate your help

 

[bulldogtodd]

No need to do any flushing , just fill with the premium blend.-----The issue is with the forward spring and clutch.----Stop running it and initiate repairs.----Easy fix in my opinion.----I developed a method to repair this about 45 years ago.

Excuse me for my ignorance but where exactly is this forward spring located if you dont mind me asking. If changing out the right lower unit oil doesnt do the trick Im gonna have to locate the spring next and part number. I appreciate all the help. TKS!

 

[bulldogtodd]

After watching the video Im assuming that the springs racerone is talking about are the ones on the driveshaft between the electro magnet and the gear forward and reverse? Im learning slowly thanks to you guys help. Tks!

 

[bulldogtodd]

Look for ---" top secret files "---on this site.----There may be help for you there.----I repair motors , know nothing about posting videos.

That helped alot racerone. Forward and reverse shift spring correct. Problem is could be corroded and need cleaning and possibly light sanding on the side the engages with the electro magnet. Am I correct on this assumption? Also im thinking by me putting the wrong lower unit oil in it could have corroded it and the magnets causing it to slip out of gear. Am I correct on my assumption? How hard of a job is this man? I think Im barking up the right tree now thanks to your guys help. My new oil should be in this week. I will report back. Thanks a ton for the help.

 

[jimmbo]

After watching the video Im assuming that the springs racerone is talking about are the ones on the driveshaft between the electro magnet and the gear forward and reverse? Im learning slowly thanks to you guys help. Tks!

 

[racerone]

The wrong oil did no damage whatsoever !!!-----The spring needs attention.-----Springs used to be expensive.----One site has a fire sale on them I believe.

 

[bulldogtodd]

The proper Oil is marketed by BRP as Precision Blend. It used to be called Type C. Be aware though, that there are some 3rd Party Oils claiming to be Type C, but are not Compatible with Electric Shift .
The proper oil is less Viscous than 75-90 gear, being that there will be some residual Oil left after draining, you will likely have to change the oil a few times to reduce the Contamination.
If the case continues to slip, check for damaged wires, You will need to drop the gearcase to examine the portion of of the wire that resides inside the exhaust housing(damage occurs if the engine is starved of water). In some cases the Hubs and Springs have become, best described as Glazed, and need a bit of cleaning. The system is simple in design and quite Reliable.

There is also the Possibility of the Switch in the Control due to the design, making interment contact as the Throttle Lever is sliding against it

Hey Jimmbo! This may be a dumb question but would it be beneficial to drain that bad oil and maybe fill it with something (alcohol) or something else maybe to get the rest of that bad oil out drain it and let it set and dry with plugs out before refilling with the good oil. Just a thought. Your the boat mechanic. Tks!

 

[racerone]

No need to flush it !-----Not at all.