Help with Carb

Discussion in 'Rack Mounted Engines' started by tinker4, Apr 9, 2009.

  1. tinker4

    tinker4 Member

    I have a 33cc 2 stroke chainsaw engine the carb on it has 2 lines one is smooth the other has barbs. My question is which is air intake and which is the gas. I would think the barbed connection would be for the fuel. Thanks for your help.

  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    Hi tinker
    There is no air intake line

    They are both for fuel and you have 2 lines going into your gas tank

    The way those Walbro diaphram carbs work is that one line is for
    fuel coming into the carb and the other is to return excess
    fuel to the tank
    as there is no float bowl to store fuel on the carb