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  1. seanneyb

    Looking for a specific jetting guide

    Sounds like the Mikuni Pocket Tuner. https://fortnine.ca/en/mikuni-pocket-tuner-mk-550-tnr
  2. seanneyb

    Starting, starting

    More success! I've got the carbs completely apart now, currently soaking in Pine-Sol. I did a vinegar bath yesterday and started cleaning. More cleaning and scrubbing today. Along the way, I'm pretty sure I found the reason for gas pouring out of the air filter! After going to four different...
  3. seanneyb

    Starting, starting

    Ahhh, yeah...I was undecided on whether or not to pull them apart. It seemed fairly straight-forward, so I hope it'll be as easy re-attaching everything. I figured I was going to have to pull the jets out. I didn't have a screwdriver the correct size but I just got back from the store with...
  4. seanneyb

    Starting, starting

    I took more things apart last night. So far so good, but I do have a couple questions... First things first though! Carbs off. Good news is that every screw (so far) has come off without problem. I bought some JIS screw bits; don't know if those have been helping, but it's been smooth so...
  5. seanneyb

    Starting, starting

    Finally had a chance to work on her this afternoon. I drained the tank, took off the petcock, and removed the airboxes and tubes. Removing the carbs will happen next, maybe Saturday. I'll do my best to document the process; this forum's helped me a lot, and just reading other people's...
  6. seanneyb

    Starting, starting

    @Bikebone - thanks for the advice, I really appreciate reading your example. So in the end, it was all a fault of the way the vacuum lines being connected incorrectly onto the petcock? I'll definitely check that and hope that your experience saves me a bunch of time. As for timing, that video...
  7. seanneyb

    Starting, starting

    Hi everyone, My XS400 is from 1979; I bought it a few months ago as my first motorcycle (I've been riding a scooter for about 8 years and decided it was finally time to upgrade). Appearance-wise, it looks to be in pretty nice shape, and has ~5100km on the odometer. Brought my motorcycle buddy...
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