2 Stroke Left Crank Seal Replacement (Yamaha DT175)

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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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Опубликовано:

7 мар 2019

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Комментарии : 41

@barnbersonol 3 года назад

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 лет назад

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

@kosmoto 5 лет назад

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!

@HorsepowerHouse 4 года назад

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...

@KARR 5 лет назад

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

@kartingkid714 3 года назад

great content man, subbed

@kosmoto 3 года назад

Thanks man!

@martinparker6536 4 года назад

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 лет назад

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

@kosmoto 5 лет назад

heck yeah! give it a good look over

@mazamike 3 года назад

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

@davidburke3378 4 года назад

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.

@garryhills8648 5 лет назад

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 лет назад

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 :)

@woodman39 3 года назад

Nice IT

@martinparker6536 4 года назад

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

@troy45050 4 года назад

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 года назад

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 !!

@800etecrider 3 года назад

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 2 года назад

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

@gerasussete 2 месяца назад

What’s the part number for that seal ?

@vigneshvenkat9446 4 года назад

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

@garryhills8648 5 лет назад

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 лет назад

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 лет назад

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

@cowboycandyvending1574 2 года назад

Ive got a 77

@louisbell235 4 года назад

how do you tell what side needs the seal replaced?

@nathangregory9002 4 года назад

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

@darrell1734 4 года назад

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 года назад

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