2 Stroke Left Crank Seal Replacement (Yamaha DT175)

Рет қаралды 29,342

5 жыл бұрын

How to replace a leaky left crank seal on your 2 stroke - Subscribe for more content: goo.gl/3rvMr9
2 Stroke Left Crank Seal Replacement (Yamaha DT175)
Heyoo! I wanted to document the procedure that I had to go through while replacing the left crank seal on my Yamaha DT175. This procedure is basically the same for any 2 stroke dirt bike, vintage or modern. I ran into several issues such as my woodruff key shearing, having loose bolts inside the cases, and stripped screws. I probably ran into every problem you could run into while doing this job, so I hope this helps prepare you! The bike is that much closer to being ready for the first warm day of the year....given I did the repair correctly haha.
Thanks for watching! I hope you enjoyed this video, make sure to let me know by clicking the LIKE button and throwing a comment down below!
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Пікірлер: 42

@barnbersonol 3 жыл бұрын

Lol most people cheat when making these vids. They loosen everything first then, put it back together then pretend they're tackling the job for the furst time. Thanks for your honesty!!!

@DigitalRider 5 жыл бұрын

That DT is so happy and smiling now lol. Ya, fork rebuilds are a pretty easy going job. Dig it!

@kosmoto 5 жыл бұрын

She's for sure going to be happier! Maybe not having all the oil leak out will help with my shifting bahaha. Can't wait to have functional forks. I'll be using one of your vids where you replace the fork oil as a partial guide!

@KARR 5 жыл бұрын

What’s up dude! And yes weather is definitely getting better soon!

@kartingkid714 3 жыл бұрын

great content man, subbed

@kosmoto 3 жыл бұрын

Thanks man!

@martinparker6536 4 жыл бұрын

i had one of those DT's in the 90's top bike , torque was great for overtaking lol . i modded mine ....jacked up the rear and put honda MTX125 front forks on and its wheel for disc brakes as that front drum is poor lol.....after that i could do stoppies with its twin piston caliper !!

@kalvinbernard9654 5 жыл бұрын

Holy crap! I should check my screws lol that's nuts

@kosmoto 5 жыл бұрын

heck yeah! give it a good look over

@HorsepowerHouse 4 жыл бұрын

A 3/8" Impact Screwdriver is the secret to not stripping the philips head of those screws. Strike with hammer, off in seconds. Been there, done that...

@garryhills8648 5 жыл бұрын

Good work Kosmo !! Are you going to fit clocks on ya bike and the proper headlamp brackets and the rear light bracket. You will get them in the USA as I get a lot of my parts there. I had the Dt 175 when I was 17 great bike. I have another Dt 175 and a Dt 250. Keep the videos coming !! Cheers Garry

@kosmoto 5 жыл бұрын

Hi Garry! Thank you for the comment! I don't know how much more money I want to spend on this bike at the moment, but I DO have a stock DT100 gauge cluster that would look appropriate on the 175. Definitely want some proper headlight brackets but would most likely keep them black still. Unfortunately I got the bike without many of the stock components so it'll be a bit of a task to piece the OEM parts back together. Maybe once my other projects are done I can work on doing a resto on this :)

@mazamike 3 жыл бұрын

That’s what she said!! Good Monday morning laugh....thank you!!!

@davidburke3378 4 жыл бұрын

You can make a simple pressure tester that will test all seals, joints, gaskets, sparkplug seats in one simple test. I have instructions posted on the Facebook Hodaka Group site under David Burke. Also make sure to leave a gap between the bearing and the seal so the bearing doesn't rub on the seal.

@martinparker6536 4 жыл бұрын

16:19 i started mine in -10 c i rode it home ....was -14c carb iced up and throttle stuck open (scary!) but once i got home was ok .......it WILL start.............full choke (i had to 'peg' mine open as it wouldnt stay pulled out) turn the idle screw open a bit to raise the idle ....2 or 3 kicks at TDC .....brrrrmmm she running......used mine to commute UK summer thru winter

@800etecrider 3 жыл бұрын

Hey Kos, I have the same IT250 you have in this video. With the stock jetting, 32:1 ratio with castor oil, no visible light shining through reeds, float height is right, newer top end, cleaned pipe and re-packed silencer, clean unifilter in the air box with minimal oil, not losing any oil from crank case, she runs rich as hell. Also, when pulling the carb, (multiple times in the last 2 weeks) I keep finding quite a bit of oil in the boot from carb to air box (weak reeds)? LEFT? crank seal? Cant find a spec on good compression numbers for that engine. Thanks to anyone who can help.

@mullaway5746 3 жыл бұрын

Scott Rood I wood say rings and trannie seal did u find the problem?

@troy45050 4 жыл бұрын

Recently got a 1978 dt175 for $50 as it has been sitting for 15 years and is dirty as hell. Looks like it saw lots of of trail riding too. BUT it has (had) good compression, electrical works, has spark, and only 1800 miles. Upon cleaning the carb, I thought id give her a few (lot) of cranks to see if she'd start and.... well i heard a couple loud pops. Carb was pissing gas out of the overflow of the bowl as well. Shit. Figured the main jet was sticking or something, ive order a new one. Maybe the pressure from all the fuel squirting in there popped the seals and sure enough had a bunch of gas in the crank cover and all over the magneto. so... THANK YOU for making this video, this is going to be a million times easier now. Just hope I don't pop the new one as well. What are the stock carb settings for this bike?

@martinparker6536 4 жыл бұрын

float valve , mine did that then it old fuel went inside crank area and washed all the bearings....smoked like fuck on the band ....then killed the crank bearings BE CAREFUL . DRAIN THAT FUEL OUT.......not easy as theres no drain , one need to remove engine really and tip it upside down .....i even thought of trying to drill a drain but my mate said dont the casing is too thin below crank area or in hindsight even thought of putting a womens Tampon down the webs of the crank when barrel removed to try 'soak' it up ROFL !!

@darrell1734 4 жыл бұрын

Since you are a expert can you help me. You 1980 Yamaha dt 175..there is a open hole near cylinder head on top right. Looks like it should have a plug in it. Can you tell mlm me what purpose it serves. I could send you a picture.

@kosmoto 4 жыл бұрын

Hi Darrell! I'd be happy to take a look at that pic. Just shoot me an email at kosmotoyt@gmail.com

@garryhills8648 5 жыл бұрын

Hi Kosmo I understand what you mean about the cost you want to spend. In the UK they worth a lot of money and going up in price. I have 12 bikes so I no what you mean. I like your Yamaha IT Cheers Garry

@kosmoto 5 жыл бұрын

Yep, not getting cheaper here in Canada either. Also just getting quite hard to find. 12 bikes! Nice! My lady won't let me have more than 5 but that's 5 more than some people so can't complain! I love the IT as well...I cannot wait to give it attention.

@garryhills8648 5 жыл бұрын

Keep the good work coming !! I enjoy your videos! I was married for 25 years but on my own now But I brought my two daughter up! That's way I have twelve bikes lol How long have you had the snow for? Cheers Garry

@vigneshvenkat9446 4 жыл бұрын

What will cause we didn't change the oil seal tell bro

@louisbell235 4 жыл бұрын

how do you tell what side needs the seal replaced?

@nathangregory9002 4 жыл бұрын

If it's smoking very heavily, more than a two stroke should and splooging. Then it's your right side. If you have a air leak symptom and you can see wet residue on the ignition side seal it's that side