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  1. Braap 140r

    YX140 engine with pz30 carb only starts with choke on

    I have a yx140 engine, iv replaced the head and installed a z40 cam, done a top end . Timing and valve clearances are intake .004 exhaust .006 I have a pz30 carb with stock jets 100 and 20, I have the fuel screw 1.5 turns out and on the 4th clip. bike will only kick over with the choke on. Any...
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