1982 Johnson 50 Sea Horse - Constant Beep While Accelerating

[saltchuckmatt]

Did you pull the head or just the water jacket?

 

[Elessar_94]

Did you pull the head or just the water jacket?

Here’s where I’m at (see pic). I think it’s the water jacket actually. Never knew what that part was called. I didn’t think it was the head gasket. Trying to determine what this deteriorated red gasket is called? Want to order a replacement.

Obviously, I’ll scrape/clean everything too while I’m in here.

EDIT: I think it’s just called the “Water Jacket Thermostat Gasket,” correct?

 

[saltchuckmatt]

Or water jacket cover.....orange crap is someone's attempt to seal or someone's goo'ey stuff to hold the gasket on.

 

[Elessar_94]

Or water jacket cover.....orange crap is someone's attempt to seal or someone's goo'ey stuff to hold the gasket on.

Roger that. Will be replacing and resealing the gasket along with the thermostat and thermo switch. Then I’ll move on to the impeller/water pump assembly and see if she’s still beeping after all of that.

 

[cyclops222]

I usually buy my Evinrude parts from a Evinrude dealer or www.crowleymarine.com Both are excellent with parts prints and help.

 

[Elessar_94]

Poppit valve should open at full throttle for increased water flow.-----Inspect that item.-----That motor was the same for many years.----A factory manual from 1980 to 1988 will suffice.----Best read some books.----Many new owners have learned about motors through an empty wallet.-----Mistakes are expensive if you need to run to a shop for help.

The poppit valve, located directly above the thermostat (mine is red), is in immaculate condition, however the rubber(?) grommet that it sits in has been damaged. I’m trying to find a new valve grommet now so I can order a replacement.

 

[Elessar_94]

I usually buy my Evinrude parts from a Evinrude dealer or www.crowleymarine.com Both are excellent with parts prints and help.

Thank you! Will check it out.

 

[Elessar_94]

UPDATE: Unfortunately I have hit a wall... Even with all bolts removed (including the bolt under the trim tab and the bolt that pins the drive shaft under the power head) I still cannot drop the lower unit. It is firmly stuck. I’m reaching out to mechanics in my area for help getting the lower unit off so I can service the water pump/impeller. Wish me luck.

Will be using anti-seize when I put the lower unit back together because I’m not a MONSTER.

 

[saltchuckmatt]

There is no bolt holding the driveshaft to the powerhead. Your driveshaft is fused to the crankshaft because no one has greased it.

Probably the death of your motor. I've removed a few but most of them are ruined.

 

[Elessar_94]

There is no bolt holding the driveshaft to the powerhead. Your driveshaft is fused to the crankshaft because no one has greased it.

Probably the death of your motor. I've removed a few but most of them are ruined.

Thanks for clarifying. Maybe I am confusing terms here. But all the videos I watched said to remove the bolt (pin?) that’s behind the starter which holds one of the shafts in place. It’s at the bottom holding a steel clamp together. Once I removed that pin the vertical shaft came loose. But the lower will not drop (it does appear to be fused like you said from neglect over the years).

If it’s the death of our motor, then so be it, it was basically free anyway. I’ve learned a LOT from it (and you guys) and know which things to look out for when I go to buy another used motor.

 

[racerone]

I have made adapters and used a hydraulic puller to separate lower units.----See post #3 about installing a new impeller as step #1 or #2.

 

[Elessar_94]

I have made adapters and used a hydraulic puller to separate lower units.----See post #3 about installing a new impeller as step #1 or #2.

That’s awesome. I’m hoping the marine mechanic I reached out to will have an arsenal of equipment to throw at it. If he can remove it, I’m pretty confident I can handle it from there. I’ll rebuild the water pump assembly, including the impeller, and follow the video shared here earlier where he applies special grease and sealant. I’ll make sure it’s done right this time (if we can get to it).

 

[Crosbyman]

OK ... me if I was up the creek with no access to the drive shaft I would drill a 3/8 hole in the side of the lower section ... flip that engine upside down and dribble some release agent "down" the drive shaft hoping to have it soak in the splines. May take a week or two but keep feeding it whatever you use .
you can always seal the hole later with steel epoxy.

 

[Elessar_94]

OK ... me if I was up the creek with no access to the drive shaft I would drill a 3/8 hole in the side of the lower section ... flip that engine upside down and dribble some release agent "down" the drive shaft hoping to have it soak in the splines. May take a week or two but keep feeding it whatever you use .
you can always seal the hole later with steel epoxy.

Not a bad idea lol. Definitely an option.

 

[saltchuckmatt]

If it does come off with all the crazy ways of doing it you will be extremely proud of yourself!

 

[Elessar_94]

If it does come off with all the crazy ways of doing it you will be extremely proud of yourself!

Haha this is true!!