Tuning Tweaks For Easier Kickstart?

Discussion in 'General (Main)' started by Mucci, Apr 15, 2018.

  1. Mucci Husqvarna
    AA Class

    Location:
    Santa Cruz, CA
    Husqvarna Motorcycle:
    '01 TE570, '13 TE310R, '19 701 Svart
    Other Motorcycles:
    HM 1100 Evo SP, Zero FX, R65, R80
    Hey folks, I'm working on a 2001 TE570. The bike has been fully rebuilt and it's still a bitch to get started. I've read all the different procedures on how to start these and this one's no different - essentially you have to kick through 10-15 times flip the choke...pull the decomp...throw some salt over your left shoulder yadda yadda. And it still takes 3-5 full swings to get fired up.

    I'm not looking for kick proceedure. I've tried them all. I'm looking for tweaks on optimizing the system to start as easy as possible.

    Here's the specs/info:

    - New plug & wire, getting fat spark
    - New rings (gapped within spec with fresh cylinder hone)
    - New valves with reground seats
    - Motor produces 1% leak after a 500 mile break in
    - Ignition timing is set per manual (lining up the tick marks)
    - I have the ability to tune AF ratio with wideband 02 - currently at 13.2:1 at idle

    Has anyone delved deep into the 570/610 and figure this out?

    Thanks,
    Dave
  2. silverstreakNZ Husqvarna
    Pro Class

    Location:
    Christchurch nz
    Husqvarna Motorcycle:
    82cr500,76gp360,90wr250,81 420AXC
    Other Motorcycles:
    74 tm400 , 02 gasgas ec 300
    The idle afr has stuff all to do with it .
    Cold engine first fire needs about 3:1 afr to start
  3. Mucci Husqvarna
    AA Class

    Location:
    Santa Cruz, CA
    Husqvarna Motorcycle:
    '01 TE570, '13 TE310R, '19 701 Svart
    Other Motorcycles:
    HM 1100 Evo SP, Zero FX, R65, R80

    How would you even tune for that? The wideband only reads down to 7.4:1. I get that rich reading within the first few seconds of starting but then it leans out.
  4. Mucci Husqvarna
    AA Class

    Location:
    Santa Cruz, CA
    Husqvarna Motorcycle:
    '01 TE570, '13 TE310R, '19 701 Svart
    Other Motorcycles:
    HM 1100 Evo SP, Zero FX, R65, R80