How to Change the Lower Unit Prop Shaft Seals (Yamaha 150hp) 

I agree with you J F! Thanks!

Glad you found it useful. Decided to share our attempt at replacing it with others in hopes of possibly helping people who are also in the process of changing their seals. 👍

Thanks, no better feeling than getting repairs done by yourself and getting out on the water to enjoy your work.

That's right! You were very thorough with your video! I just wanted to thank you for posting it.

Appreciate that…there is always more we can learn but it’s nice to put a video like this out there to see if it can help someone else!

Thanks for the advice! As we said earlier we are nowhere near experts and we love hear feedback like this that we can use further down the road 👍

Sounds good, good luck with the repair

@@JKFishingYt well hooked up the air and it broke off the nozzle. I guess I dont have a leak. Must have been the drain plug gaskets they were rough. Now just the u joint bellows has some chaffing from the water line.

Lithium grease - antiseize is for bolt threads.

​@Bob Beckstead Come on man are you being serious, nickle or copper anti seize is used for so much more than just bolts

@@lsumaniac2485 as a tool & Die maker, don’t use anti seize here

​@@bobbeckstead8340anti seize on anything that can seize together and won't wash out

@@antho7475 Willful ignorance or mental laziness?

Yes we have had that feedback. I’m future we will get the proper tools and do a proper pressure test. Thanks for your response

Butchers doing things incorrrectly

Never went over 10 psi with the compressor as we had a gauge on it

vacuum test also

En el manual de taller de Yamaha van los dos en el mismo sentido.estan puestos correctamente

I was thinking the same. What would be the diameter of those screws used for gasket removal?

I can’t remember as to exactly why we did but there probably wasn’t an issue with it or else we would have mentioned it. Maybe just to save time as the video was already over 20 minutes long.

@@JKFishingYt thanks the video was very helpful

Mírate el manual de taller y verás que están puestos correctamente

Cierto. Entonces no tiene sentido poner presión porque siempre saldrá aire por los dos retenes.

Got a video coming soon on just that

I really don’t know the dimensions. The specs for your motor should show it.

You or so right

He tried, but it's unsettling when someone does a tutorial when it's their first time and you can tell they are guessing.

Correct me if I am wrong, but did we not say this is our first time attempting this repair and that we are open to feedback? Don’t understand why people fail to hear that part. It’s a process of us attempting it ourselves and seeing what we need to fix or improve on in hopes that someone else may have done the same thing incorrectly.

​@@JKFishingYt Dude I run a channel as well and no matter what you ever say or do you will have haters like the ones above

Appreciate it man…comments like these that really make our day. Lots to learn ourselves but why not share our experiences with others and see what happens. We will definitely give your channel a look!

you can't increase your volume? lol

@@ezio8591 haha! Really!

Love comments like these because the person making them has no background on why the video was made. We mention MULTIPLE times that we know we will make mistakes and that this this video is an ATTEMPT at fixing the problem ourselves. We made this in hopes of positive feedback from others because why not try it yourself. As for the pressure test, we don’t understand why viewers can’t comprehend the fact that although we used an air compressor, we made sure that the pressure was under the amount that the seals can handle. Any other problems you have with this video?

Dude get a damn life, instead of acting like a complete computer bully why not be a little more respectful about it and teach the right way, and by the way there is nothing wrong with using screws to remove seals if you take care not to damage the walls as I've done it countless times with motors and engines still in service today. My last question is if you're such a master marine mechanic why in God's earth are you watch a video on how to do the job. One of two things are going on here, either you don't know shit about it or you just like watching videos to in return trash others on the work they are doing.