Evinrude 25 Thermostat (Outboard Visible Cooling)

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This evinrude outboard was not getting to operating temperature. I first check for a thermostat. Then I check the water flow. The reason I check water flow was the engine was bought with no thermostat and no temperature switch. I thought it might have been getting hot and both were taken out. As you can see the water flow is good. I will still keep a close eye on it to make sure it does not run hot.

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2 окт 2024

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Комментарии : 65

@bullmoose6356 5 лет назад

Love your videos man. You've helped me fix a few of my family's boat motors and save us so much money. Thank you for your videos

@OmFishing 5 лет назад

I am happy it helped, Thanks for watching. Be sure to share the video, Thanks

@shanewestenberg2967 2 года назад

Love your content I’m having a problem with my 25hp Johnson cooling system

@edwarddinardo1248 4 года назад

Great videos,,,,,makes it look so easy.....love the tstat video!

@OmFishing 4 года назад

Thanks for watching and commenting. Keep watching!

@ricks9263 2 года назад

I have 84 35hp Evinrude. ran on trailer, water circulating sporadically. Put in water and idled about 1/2 mile before no tattle tale and steam coming out. motor was hot. Changed water pump ran on trailer only got it to pee a few minutes and now, no pee and steaming again from tattle tale. What should I check next? I did run hose trough water tube before pump change, had water at TT and out exhaust ports. Thanks in advance.

@-Viceroy- 5 лет назад

You probably know it, but always check the lower seal of the powerhead after overheating situations and weird diy fixes like that one. Many times i have come across with burned lower seal when someone had driven with a bad impeller or thermostat (or with both).

@OmFishing 5 лет назад

I had not had that problem yet. But thanks for the tip. That does make a lot of sense that the over heating is going to damage the seals too. Thanks for sharing and commenting.

@tullysika Год назад

I have an evinrude 6hp frisherman outboard 1974 model. I was wondering if you knew what size nut fits the prop shaft? I want to replace the plastic dome nut with a brass nut. Thanks for any help.

@AAE-cg1il 2 года назад

That clear plate you fabricated to watch the thermostat was a stroke of genius. I recently discovered your channel and I like it. Thanks.

@OmFishing 2 года назад

Thanks and welcome, I have three outboard just waiting to get repaired on video. That will be coming soon.

@frankdavis3486 5 месяцев назад

replaced the empeller on my 25 evenrude and water is pouring out the exaust but not the pee hole. its overheating too. think its the thermostat. any advice?

@davesirvio749 3 месяца назад

Have you ever heard of the motor over cooling? My 25 hp 1984 evinrude I think my water is by passing the thermostat. The part of the head where the rubber stat seals looks all rough and corroded. The engine never warms up About 107 degrees I tested the thermostat starts to open right at 143 degrees What do think?

@OmFishing 2 месяца назад

Do you know if the rubber gasket on the thermostat is sealing good.

@markrobertson8816 Год назад

What is the part number for water jacket cover for model E20CRCCA

@markrobertson8816 Год назад

Gasket for cover

@Dudlushka 2 года назад

Very cool videos! I'd like to ask your help Sir! I'd like to put a thermometer to my '72 20hp Johnson (I think the cooling system is similar). Could you please recommend, where should I drill the hole/thread to the sensor (1/8 NPT threaded Temp Sensor)

@joshuamunoz5036 3 года назад

Hello I have a question I have a 1986 15 evenrude I bought from a friend, it’s in excellent shape for it age, I replaced the water pump kit, first time I took it out after the water pump it ran good, water was coming out the tel tail but not like it should, I took it home and blew compressed air threw the tel tail hose and it started to pump water good, then the water stopped coming out,some dirt clogged the the hose which connects to the tel tail it looked like a mixture of sand and grinded shells,I cranked it up then it started peeing good again. Took it out today 11/20 it was dripping than pouring out, also steam was come out the exhaust as well,took the cover off and the engine was really hot like I couldn’t put my hand on it for 2 seconds, looked at the hose and it was clogged again with the same sand/crusted shells,took it back home ran compressed air again thru it and water is flowing good throughout the motor again, Please any suggestions on this will help.

@OmFishing 3 года назад

There are some small passages the water has to go through. If the motor has sand or fine shells in the in side making it run hot. You are going to have to pull the side cover and most likely the head too. check out my video on the cooling system. I will put a link to it. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-bAQo_iMM9E0.html

@joshuamunoz5036 3 года назад

@@OmFishing when removing the motor head is there something special I have to do to remove the tiller handle from the block ?

@OmFishing 3 года назад

@@joshuamunoz5036 On that outboard the rod that connects the two is just a slip joint.

@TheReefPimp 2 года назад

All of your videos are excellent! Very informative & very well explained & demonstrated. I'm subscribed! I'm no marine mechanic...... but I'd guess by the guy in the background that that's a 1 horse powered outboard! Ha ha. I actually would like to see a video of removing the temp sensor on one of these motors. I'm guessing you just work it out gently.

@scottstallings7761 5 лет назад

One way to learn something, and then there's a great way to show, amazing my friend. Great explanation just one suggestion dont talk with outboard running.

@OmFishing 5 лет назад

Thanks for the tip I will work on that!! LOL

@darrelladams9145 4 года назад

Great video! I admire your dedication to learn these things and to share with others. The rooster in the background is music to my ears!

@OmFishing 3 года назад

Happy to help. and thanks for commenting.

@Shokenryu 3 года назад

I cannot find a complete, assembled thermostat for my 1993 Johnson Outboards 9.9 [ J10RETM]? All I've found was bits and pieces from Crowley. Can anybody help me find a completely assembled thermostat please?

@OmFishing 3 года назад

Take a look at boat.net www.boats.net/catalog/johnson/outboard-by-year/1993/j10retm/cylinder-amp-crankcase

@jeffreywhicker8947 4 года назад

I just mounted my 30 horse Johnson on my transom for the summer. Its a 1998 motor but still like new under the cover because my boating is all fresh water. We here are very lucky not to have the corrosion & salt deposits of salt water operation.That must be a real pain in the rear for ocean boating.

@OmFishing 4 года назад

The ocean is a real harsh environment. Most equipment does not last a long time. It's like a car in the north don't get to attached because the salt is going to eat it.

@chrismccartney8668 3 года назад

Great to see how fills up and only gets to sender later my old Yamaha 4hp which pushed out steam as well as water was clogged with grit/fine sand and had to scraped out although it pumped water it was not enough once cleaned and that included the tube from water pump to power head now fine.

@OmFishing 3 года назад

Good to hear, I thought this motor was clogged up, but the water flowed through it just fine.

@Epressroom 3 года назад

Hello, I have a 1984 140 horsepower Johnson cross-flow. I noticed when I have the earmuffs on the engine the water was coming out very slowly not as a strong steady stream like I seem to remember it used to have. I changed the complete water pump and housing assembly and put it back together and it's still discharging the same. Is fresh water engine and has never been in salt as I'm here in the Chicago area, but Do you think there is a clog in the water jacket? Thanks for your wonderful and informative videos!

@OmFishing 3 года назад

Sometimes when we replace the water pump the tube going from the pump to the engine lose it seal at the engine. I would make sure it is not leaking there. We most always replace the grommet at the pump but not the upper one. Looking at the parts brake down I don't see a upper grommet on this motor. That tube has to seal at the top.

@Epressroom 3 года назад

@@OmFishing thanks, but it was flowing slow on the earmuffs prior to me replacing the entire water pump impeller assembly and after I put the new assembly in it's still a weak stream. Someone else said that maybe that water hose could be clogged with sediment, as I'm up in Chicago I guess I'll have to wait till the spring is now it's too cold to run it outside

@nativejuicevapors 4 года назад

So do you need the temp switch or will it run okay without it? Mine is missing it thank you

@OmFishing 4 года назад

You can run your motor with out a temp switch, but if something happens to your water pump or the water intake gets blocked while you are running. It would most likely cause engine damage before you notice it was hot.

@bluefinn134 4 года назад

Great vid, Any difference in performance? Isn’t it better if the motor runs cooler? Cheers

@OmFishing 4 года назад

Proper engine temperature is a critical to good engine operation.A outboard motor that runs to cool will experience Fouled spark plugs, poor or rough idle , loss of wide open throttle speed, excessive carbon deposits. It is important for the engine to reach the proper running temperature. I know that it seem like it would be good to run cool but it can be bad on the engine. Thanks for commenting and stay well.

@rogerbraswelljr.923 4 года назад

I tried running mine without a thermostat....bad idea. Wouldn't stay running

@joseluisechapaca5816 5 лет назад

my 35 hp Evinrude is running hot without thermostat ,new impeller I took the lower unit out blow air and water up to the motor water come out everywhere exhaust clean ,I m give up ,to bad I fly with my 12 ft Jon boat AT 34MPH

@OmFishing 5 лет назад

If you want to go through the work. I would check the grommet on the bottom of the engine on the water tube. You would have to pull the engine out and unbolt the exhaust tube. That is about the only other place left for a restriction.

@joseluisechapaca5816 5 лет назад

thanks so much but I trade it for 87 Evinrude 9,9 and 120 cash so I m happy I don t need to go fast and I save money on gas I love your videos please don t stop we need you god bless you .

@marcus123841 3 года назад

It much water coming up through the thermostat hole !!

@OmFishing 3 года назад

When the thermostat opens the water got low in the head at idle. When the motor was revved up the water jacket filled up. I am sure that is how it does with the proper cover. Thanks for watching and commenting.

@ninjagodzilla6402 4 года назад

I have a 89 johnson 40.i went to take the thermostat out & there was a hole next to the thermostat hole that had a red plastic plug in it! Do you know what that could be???

@OmFishing 4 года назад

A lot of models have a temperature switch close to the thermostat hole I am thinking that is what your looking at. Thanks for watching and Stay Well.

@ryanperkovich5371 4 года назад

@@OmFishing would that temp switch cause the motor to shut off in an overheat situation or does it just put it in limp mode and let it continue to run?

@OmFishing 4 года назад

@@ryanperkovich5371 I don't know of the older outboard engines that shut the motor off completely. All the outboards I have worked on just put it in S.L.O.W mode.

@kentyler966 4 года назад

I like that you repair your outboards with simple tools like the ones I have.

@OmFishing 4 года назад

Thanks for watching and commenting. I work on the outboards with the tools most people have. That is because that is what I have. I don't buy a special tool just to use it once or twice if I can get around it.

@rdgurule 5 лет назад

I didnt notice any peeing at the end while running.

@OmFishing 5 лет назад

You are right I think the water pump is weak. I had to put the muffs on it to make this video. I had it in a container full of water and it would not pick it up on its own. Once I give it a little water it would start working and stay working. After I shut it off it would not pick up again until I give it a shot of water with the muffs. It was like I had to prime it. If you look right at the end you see me give it a shot of water off the muffs and it starts working. Then it is picking the water up from the tank. I like your fish you are holding in the picture. Thanks for watching.