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Makotosun

is this worth it

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Replied by MarkT on topic is this worth it

Nice work!  
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
26 Sep 2026 10:10 #31

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  • Dogboy
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Replied by Dogboy on topic is this worth it

here are the before and after.  I have a 25 mile trip on the motorcycle after I cleaned the the commutator. That is why it is not all nice and shiny, but that does show that this thing does probably need to be cleaned every 2k to 3k miles if not sooner.  And I believe (my opinion only) that it was the gaps being full of carbon from the brushes.

imgur.com/a/1ROClrf

thanks for all the help!
The following user(s) Liked this Post: lostmybearing
Last edit: 26 Sep 2026 18:16 by Dogboy.
26 Sep 2026 15:35 #32

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Replied by pabdt on topic is this worth it

Great work! What did you clean the slots with? They look very uniform.
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1969 Yamaha CT1 175
1969 Yamaha DT1S 250
1973 Yamaha DT3 250
1974 Yamaha DT125A
1974 Yamaha DT360A with SP96 Exhaust
*The End ... Next Up Honda XL 250.
27 Sep 2026 16:23 #33

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  • Dogboy
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Replied by Dogboy on topic is this worth it

thank you. I used a pick and then a box cutter (razor blade). I actually liked the pick best as I could scrape it from side to side and front to back. then I used 400 grit sandpaper on the commutator. I would recommend to clean the slots first then sand down the commutator. The manual said that you could use a hacksaw blade but I thought it may be too wide.
The following user(s) Liked this Post: MarkT, pabdt, Ht1kid
27 Sep 2026 20:07 #34

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