mikuni vm34's

  1. H

    Proper Jetting and Fuel/Air Screw Position Mikuni VM-34 on a 1972 Yamaha XS2 (650)

    I’ve posted a few times about this bike. Bought it a few weeks ago. Did quite a bit of road worthy maintenance / repairs on it before I could take if for its first test ride. Idles good, low throttle stutters and extremely sluggish, 3k and above seems to run good. Pulled right carb tonight to...
    • Hanniusms
    • Thread
    • main jet mikuni vm34 mikuni vm34's pilot jet proper jetting
    • Replies: 31
    • Forum: The Garage
  2. S

    Rejetting VM34's

    Hi Everyone, SO I bought some new Mikuni VM34's got them on my bike started up first try runs pretty well except at full throttle get a little choppy I expect my mains need to be a bit bigger? Here is what I re-jetted to what are everyones thoughts on the stock needle jet with the Mikunis...
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