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    For Sale - 1977 XS400 project bike

    Bought this bike over summer, moved off to school before I had time to get it in riding condition again. Started fine when I had it, but ran on one cylinder. Needs new piston rings, valve seals, etc. Previous owner had made this into a scrambler type thing. I was planning on turning it back...
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    Throttle Shaft Seal Replacement

    they were trash before carb spray hit them haha. but i see now how that could have exacerbated the problem. anyway, should I do a full rebuild or not?
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    Throttle Shaft Seal Replacement

    My 1977 xs400 needs throttle shaft seals to be replaced. Does that mean it needs a full carb rebuild? The previous owner said he "rebuilt the carb not too long ago." I'm guessing he either overlooked throttle shaft seals or used bad ones. What do y'all think?
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    1977 XS400 vacuum leak?

    Hi, everyone. As the name states, I'm new to this forum and to motorcycles in general. Bought a 77 xs400 about a month ago and it started acting up once I brought it home. From what I've read, the symptoms seem to point to a vacuum leak (hard start, inconsistent idle that will often slow until...
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