Johnson 15hp Outboard Water Pump, Thermostat & Head Gasket Replacement Part 2
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- čas přidán 3. 07. 2024
- I had the Tinny out a few weeks ago and had a problem with the water pump which caused the engine to overheat. In these two videos I replace the water pump and thermostat and also remove the cylinder head. The paint on the head was burned and discoloured. I removed the old paint and repainted with high temp primer and finished off with 4 coats of Johnson White. Hope you enjoy.
00:00 Intro
01:18 Thermostat Replacement
05:25 Preparing The Cylinder head
08:55 Installing The Cylinder Head
13:28 Engine Start Up
16:53 The End - Jak na to + styl
Thanks for the video. Best one I've found for the 15hp on YT. Cheers.
Glad the video was helpful. Thanks for your positive comments. Cheers
Man, finally someone that takes the time to show us the break down of each component. Thank you so much. I have learned a lot from your videos.
You have a great day.
I really appreciate your comments. Glad the videos help. Cheers
Brilliant thanks so much 👍
Super helpful! Thanks for the video. This is SOOO! much better and more informative than a service manual. Very Cool that You did this!
Thanks for your comments. Glad the video was helpful. Cheers
This video was very helpful. Thankyou for sharing.
Glad it was helpful!
Well done!
Thank you for this video.
Glad it was helpful! Cheers
Great video I'm just attempting to do exactly the same job's on my johnson, cheers
Thanks for your comment. Glad the video is helpfull. Cheers
Muchas gracias, muy útil el video
Eres muy bienvenida
Great video. Really liked this short series. One thing I do say is, you don't need to seal any of the head gasket components. Should be just fine though. That engine is in really good shape!
Thanks for your comments. Yes I agree with your comment but opted for the gasket sealant anyway. Cheers
😊
I have rebuilt hundreds of v8, v6, inline 6, and even flat heads for cars. Boat motors maybe more simple in how they are built, but I have never done one, so I consider myself a novice.
Thank you for sharing
Thank you for this content. I have the same motor but a 9.9hp but going to trying to upgrade it to a 15hp. Do you have a video showing how to adjust the carb? No money to take to the shop so im stuck doing my own work. Please upload more videoz on this motor.
I no longer own this boat and motor. Great little outboard. Unfortunately I can't post any more related videos. Cheers
How do you like the plastic cavitation plate you put on this motor? I have one that I have not installed yet.
I like the plates easy to fit and doesn't take too long to do the job.
Nice video. Amazing shape motor. Mine looked like that 25 years ago.
Do you have any idea what the hole on the right side of the thermostat cover is for. It opens into a cylindrical cavity in the head. The reason I want to know is that I broke off the upper right hand fastener and then proceeded to break off my drill bit when drilling it out. I am considering filling that cavity with epoxy, tapping it, and using it to attach the cover. It should work ok but I'd love to know what that cavity exists for in the first place.
That is a really good question. I wondered the same thing when I was working on my outboard. I couldn't find much on a google search but in the outboard manual it describes the removal of the thermostat assembly and "temperature switch if fitted". So I suspect it is a location for a temperature switch, if you have one. If you don't then I can't see any problem with doing what you suggested. Cheers
@@albabmg Thanks. That was really helpful actually. I went ahead with the fix and it worked like a charm.
@@commonsenseoldtimer Glad it worked out for you. Cheers
Replacing the head gasket on a Tohatsu 9.8, in researching head gasket sealants I came across some strong recommendations, NOT to use copper based sealants as they will corrode the aluminum block and head surfaces. This is consistent with NOT using copper based anti fouling on aluminum sail drives. Wondering if that was a manufacturer recommendation or something you just added?
I read various articles and watched several videos regarding gasket sealants and decided that I would use one. I guess its an individual choice. I have had no problems so far. I cant remember if the manufacturer recommended a sealant or not. Cheers
OMC/BRP manual for 9.9 / 15 hp says to apply a thin coat of gasket sealant to both sides of the head gasket. Doesn’t mention anything about coating head cover screws. Regards
@@danielrobert7181 Thx for the info. FWIW, my son and I got the gasket installed and the motor working. He forgot a small O ring on the fuel pump which caused fuel to leak but once got that sorted out a pretty simple repair/ rebuild.
If you remove the lower cowling it will make access to the lower fasteners on the engine much easier.. good video nonetheless!
Thank you. You are correct I could have removed the lower cowling. If I had to do the same job again I would. Cheers
How do you know if the thermostat is bad?? My 15hp has a good water pump and is pumping plenty of water to keep kool!
Sounds like your thermostat is OK. I check mine by placing in a pot of water. Gradually heat the pot until you see the thermostat open. The thermostat should open at about 62 deg C or 143 deg F. You can use a thermometer to check this. Cheers
@@albabmg I had a new thermostat in my parts so I installed it. It looked like the old one was bad because it was sticking out in the front and the new one was not! Plus the old one was black.
Where did you get the kit from please
Many thanks
Hi I purchased my parts from this Australian website.
outboardparts.com.au/ Cheers
@@albabmg thank you
@@albabmg don’t suppose you have a video of how the wiring goes I don’t have any spark, it wash set up for electric start but I had to remove it all the cables were corroded
@@grahamgeorge1130 Sorry I don't have a video of the wiring. I'm not the best at electrical issues. Have you had a look on the net for a wiring diagram? Cheers
HI good video, What is the torque that you adjust the bold in in./lbs?
Cylinder Head Bolts Torque settings - 216 to 240 in./lbs (18 to 20 ft/lbs) (25 to 27 N.m) The Manual instructs "Do not use sealants on threads". Hope this helps.