2003 Yamaha jog help

Discussion in 'The Workshop' started by Stephenlav1, Jun 27, 2020.

  1. Stephenlav1

    Stephenlav1 New Member

    Messages:
    3
    Hi guys and girls

    please can you help me with working out the hoses on my carb please, didn’t come with any of it connected and don’t want to get it wrong

    cheers
     

    Attached Files:

  2. Shunty

    Shunty Member

    Messages:
    172
    Rides:
    Baotian BT49QT-9
    Can't see carb that well but in general the fuel will be the largest brass pipe fitting and smaller one will be vacuum for fuel tap
    Both rubber pipes should be different sizes, internally
    from one photo looks like oil injection pipe is already on
     
  3. Stephenlav1

    Stephenlav1 New Member

    Messages:
    3
    Thanks for the reply, I had no pipes connected so uploaded some more pics to see if it’s clearer. It’s a Minarelli branded one if that helps?
     

    Attached Files:

  4. Shunty

    Shunty Member

    Messages:
    172
    Rides:
    Baotian BT49QT-9
    Looked on my old Yamaha Neos which is same setup but different carb
    The pipe fittings look the same

    1 vacuum for petrol tap
    2 air vent for float chamber
    3 oil injection pipe
    4 fuel in
    best way to start is to connect 3 and use a piece of pipe for 1 to connect to fuel tap so you can suck on it to check if tap opens
    and fuel runs out of larger pipe
    If ok connect 4 to carb and suck on 1 to see if carb fills and does not flood
    If all well give it a start
    Make sure oil tank has oil in it
     
    Stephenlav1 likes this.
  5. Stephenlav1

    Stephenlav1 New Member

    Messages:
    3
    Excellent, thank you!! I have two pipes coming out of my fuel tank, should they be connected with a tee piece and then one pipe to the fuel inlet?
     
  6. Shunty

    Shunty Member

    Messages:
    172
    Rides:
    Baotian BT49QT-9
    no
    one should be fuel the other vacuum
    smaller one vacuum larger fuel
    if you suck small one fuel should come out large one
     

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