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Makotosun

New CT1 project

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Replied by MarkT on topic New CT1 project

Always great to hear them run for the first time again!  Congrats!

If you do seals, lay the bike on it's side with seal out to drain excess crankcase oil that may have collected.

I recommend using the 77-79 IT 175 ignition side seal, better part.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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05 Sep 2021 05:34 #21

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Replied by adguy2112 on topic New CT1 project

Thanks for the tip and the encouragement. I already order the seal specified for the CT1 buy my I’ll definitely pickup the seal for the IT as well. 
05 Sep 2021 22:21 #22

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Replied by RT325 on topic New CT1 project

Bad seals won't stop it running--but seals out of the case will.
06 Sep 2021 01:52 #23

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Replied by Scootern29 on topic New CT1 project

Just a thought on my part after chasing spark on a few bikes. When you replace the seals pull the motor. Due to the motor has been in for I assume years, you may have corrosion between the motor and the mounts. Bad ground....not good spark. Sand the mounts and reinstall.

Scott
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06 Sep 2021 18:52 #24

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Replied by adguy2112 on topic New CT1 project

Awesome Scott, I learn something every single time I log in. This is one I’ve never heard. I did get spark after changing the coil, points and condenser but it evaporated after I started the first time. There is visible oil now in the dry side of the crank which spun all over the stator assembly. I’m guessing it coated the points as well But I’ll take your advice when I do the seals. Much appreciated 
06 Sep 2021 21:04 #25

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Replied by Scootern29 on topic New CT1 project

adguy2112 it is real common with new people restoring bikes that powder coat the frame, install the motor, and don't have spark due to no ground because of the powder barrier. An older bike with the aluminum case and steel mounts can get deposits from washing and riding in the dirt. You may have a ground but not a good enough one once the motor starts and vibrates.
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07 Sep 2021 17:23 #26

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Replied by adguy2112 on topic New CT1 project

Back from vacation and had crank seals waiting for me. Did the dry side already and found the points wire pulled off the condenser. Put it back together and nice consistent blue spark. Pulled off the clutch cover and leaned the right side seal was completely out. Tge clutch basket is in the way but not sure if I need a special tool to hold the center. I definitely want to take special care to not break the aluminum. Any special tricks anyone has? 
17 Sep 2021 19:43 #27

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Replied by RT325 on topic New CT1 project


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Replied by adguy2112 on topic New CT1 project

Great Tip RT, I like that spanner holder. Wish I had a spare set of steels and fibers lying around. Just threw out the last set I replaced not realizing they could have another purpose. Toyed with the idea of Just pushing this seal back in but It’s nearly all the way apart so we’ll do it right this time. Appreciate the advice. 
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17 Sep 2021 20:55 #29

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Replied by adguy2112 on topic New CT1 project

So saw someone made a spanner clutch removal tool out of plywood on YouTube. Gave it a try and bingo! Worked like a charm. All put back together. Went through the carb again as well and it started on second kick but not running great. When going through the carb I noticed the right hole of the three holes at the bottom  on the carb air inlet seems clogged and there was some tough gunk coming out. I was concerned the passage may supposed to be blocked by some sort of plastic substance. I don’t think I got it cleared out. Can anyone confirm what that passage does? 
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18 Sep 2021 22:15 #30

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