TC610 Fuel Idle and Air Idle Screws...WTF?

Discussion in 'Older Single cams' started by davisMFG, Mar 4, 2015.

  1. davisMFG Husqvarna

    Husqvarna Motorcycle:
    2000 TC610
    Yo.

    I recently acquired a 2000 TC610. 4speed, left-kick, etc.

    I went through the whole bike getting it cleaned up since it hadn't been used in a couple years. Kicked it started, ran really well, but the idle was too low so every time I let go of the throttle, the engine cut out.

    I have a feeling I'm missing one of the screws mentioned in the title.

    Take a look at my engine and tell me something should be in the "B" area besides a black plug.

    WTF??

    Attached Files:

  2. DaveM Husqvarna
    AA Class

    Location:
    Adelaide, Australia
    Husqvarna Motorcycle:
    2001 TE 570
    Other Motorcycles:
    Motorised Bicycle
  3. davisMFG Husqvarna

    Husqvarna Motorcycle:
    2000 TC610


    Thanks for the info, Dave.

    Does the "B" plug rotate? I haven't tried turning it because I thought it was a plug... Can I tune the air mixture with it?

    .
  4. DaveM Husqvarna
    AA Class

    Location:
    Adelaide, Australia
    Husqvarna Motorcycle:
    2001 TE 570
    Other Motorcycles:
    Motorised Bicycle
    Hi,

    I don't know, best to download the manual for your bike and look at the exploded diagram for the carb.

    You could try digging the plug out to see if there is a screw under it.

    Cheers, Dave.
  5. DaveM Husqvarna
    AA Class

    Location:
    Adelaide, Australia
    Husqvarna Motorcycle:
    2001 TE 570
    Other Motorcycles:
    Motorised Bicycle
  6. davisMFG Husqvarna

    Husqvarna Motorcycle:
    2000 TC610


    OK, so I ordered the throttle screw part from Hall's based on their schematic of my bike as well as the info I've gotten here, but the screw doesn't fit!

    Take a look at these detailed photos from the carb and you'll see that the throttle screw area has no threads. It almost looks like someone messed with it--almost like a metal sleeve in there, but it doesn't come out.

    The bike starts and runs, but it won't idle and it's really bugging me.

    Attached Files:

  7. stormer254 Husqvarna
    AA Class

    Location:
    England
    Husqvarna Motorcycle:
    More than I dare let her know
    Other Motorcycles:
    Yes!
    Looks like the thread stripped and was drilled out and a plug put in its place, make a bush and drill and thread it to take the screw,
  8. davisMFG Husqvarna

    Husqvarna Motorcycle:
    2000 TC610

    I thought about that, but the little metal pin with the spring around it doesn't even fit into the smaller hole, so I'd have to drill that bigger too.

    It's a mystery...this hole just doesn't seem right. Something happened and I want to know what it was.

    Unfortunately, only the original owner knows and there's now way for me to find him.

    Maybe this was a special carb for the TC and it has no throttle adjustment...
  9. DaveM Husqvarna
    AA Class

    Location:
    Adelaide, Australia
    Husqvarna Motorcycle:
    2001 TE 570
    Other Motorcycles:
    Motorised Bicycle
    Hi,

    Looking at the pic you posted you need to remove that metal piece if there is no thread then you have to get another

    carby body or used carby.

    Cheers, Dave.