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  1. S

    SBN34 jetting with JS300

    Hey does anyone know what jets should be in the SBN34 on my JS300? Right now it is 77.5 low speed and 80 high speed. Thanks
  2. S

    300/440/550 js300 oil/gas coming out of exhaust?

    Ok I put a new needle and seat in but it seemed like the needle would hang up a little bit. Anything I can do to fix this? Anything I can do to make sure the pop off pressure is not too low or if there is too much pressure in the tank?
  3. S

    300/440/550 js300 oil/gas coming out of exhaust?

    What's the lower unit?
  4. S

    300/440/550 js300 oil/gas coming out of exhaust?

    I'm trying to dial in the carb mixture screws and now this gas/oil mixture is starting to come out of the exhaust? Is this normal? Thanks
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