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Makotosun

69 CT1 Clean Up

  • pabdt
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Replied by pabdt on topic 69 CT1 Clean Up

Looks like the rear shocks have seen better days. They are in the ultrasonic right now, but don't think that is going to help alot.

Length fully extended: 12" (305mm) center of eyelet to eyelet
Mounting holes: 10mm
Mounting hole depth: 20mm
________________________________________________
1969 Yamaha CT1 175
1974 Yamaha DT125A
1974 Yamaha DT360A with SP96 Exhaust
Next…196x-197x Yamaha something.


23 Feb 2026 21:47 #21

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Replied by pabdt on topic 69 CT1 Clean Up

Added oil to shocks, cleaned them up. They need replacement. Hopefully they will work fora while. Ended up with 50ml in each and some short term repairs. Need to find the steel compression rings.

Front forks had about 90ml each of fork fluid. I almost want to replace the seals since I'm that far in.

going to assemble rear shocks as is, then replace when I find a good pair.

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a 1.25mm and 0.75mm over cylinder, both CT1, piston port cylinders. I originally intended to build the 2nd engine I have, not sure if I will or not at this point. I'm going to have to replace the case halves and L/R covers and bearings not a bad idea.

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some of the clean up went well. levers are the ones on bike.  I have 2 that I will be replacing them with.  They have provisions for mirrors and
a clip in brake switch.  Essentialy same ones as my DT360.  The left hi/lo beam will get replaced with what I think may be something from a later CT1 or RT.  
An alum, L/R turn signal sw/ w/ horn.  They goal there is I will have turn signals on this one as I plan to get it approved for street use.  I probably don't need them to get approved, but the original harness has provisions for turn signals. 


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Looking forward to a fresh clean frame to start building on.
________________________________________________
1969 Yamaha CT1 175
1974 Yamaha DT125A
1974 Yamaha DT360A with SP96 Exhaust
Next…196x-197x Yamaha something.


Last edit: 25 Feb 2026 21:11 by pabdt.
25 Feb 2026 21:05 #22

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Replied by Phyllo on topic 69 CT1 Clean Up

Hey PABDT, I've had a few Enduros over the years, and currently have a DT-3. I was never aware that you could replace or even access fluid in the shocks. Would you be able to provide a quick explanation how that's done?

THanks and your restore is coming along nicely - great work!
26 Feb 2026 05:21 #23

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