1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Mikuni Jetting for 1974 CR 125 Help

Discussion in 'Vintage/Left Kickers' started by mtbrider, Mar 26, 2011.

  1. mtbrider Husqvarna

    Location:
    Australia
    The Mikuni is finally on with my home made remote choke and it is running and idling well. Current specs are:
    Mikuni VM 32
    main 4 / 042 200
    pilot 35
    needle jet 159 Q6
    jet needle 6DP17
    throttle valve VM 34 / 110 3
    air jet BS30 97 2.0
    needle valve VM 34 / 39 3.3
    Seems fine up in the rev range however is bogging down badly from take off. The needle has a very aggressive taper so it seems to be dumping too much fuel in when you throttle on drowning the plug.
    Tried a 6F76 of a 250 but same problem. Any ideas on size to stop this problem. PS I am in Australia.
    mtbrider, Mar 26, 2011
    #1

  2. auto Husqvarna
    AA Class

    Location:
    NJ,USA
    Husqvarna Motorcycle:
    too many
    Have you ever rode this 125 before putting the Mikuni on?How did it run before?
    auto, Mar 27, 2011
    #2