Yamaha Neos 50 main jet size help

Discussion in 'The Workshop' started by BADGER, Oct 16, 2016.

  1. BADGER

    BADGER Member

    Messages:
    45
    Hello All,
    Does anyone know the standard main jet size for the 2t yamaha Neos 50 ? I was running it as a 70cc on pre mix but my idiot lad used it as his car had broke down but never added the two stroke to the fuel. This killed the piston.As the bike is only used as an emergency spare I have gone back to 50cc using parts I had to hand it runs in a fashion but is unusable as it is running too ritch. I would like to know the standard size as a starting point and go a little larger to account for the premix. Is a bigger number for the jet size a bigger jet
    (sounds like a daft question but some things seem to work in reverse)

    Thanks all
     
  2. Niall Corrigan

    Niall Corrigan New Member

    Messages:
    4
    Rides:
    Neos 50, BMW 800
    I've been messing around trying to post a screenshot of my service manual... Just search online for a Neos 50 service manual, you will find the official Yamaha manual as a PDF file, it's better than a Haynes manual... nearly....
     
  3. scubabiker

    scubabiker NITROJUNKIE

    Messages:
    7,321
    you might find the manual on carlsalter.com
     

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