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

Head torque spec needed

Discussion in 'Vintage/Left Kickers' started by disonny, Sep 7, 2016.

  1. disonny Husqvarna
    AA Class

    Location:
    upstate ny
    Husqvarna Motorcycle:
    73 360 wr/rt, 75 wr250 78 cr250,
    Other Motorcycles:
    83 wr250, 84 wr400
    Does anyone know what the torque spec is for the head nuts and bolts on a 1983 wr250?

    thanks
  2. SteveJ Husqvarna
    AA Class

    Location:
    New Mexico
    Husqvarna Motorcycle:
    1970 400 Cross, 1983 500 CR
    Other Motorcycles:
    84 Honda CR500R, 81 Honda CBX,
    Just a thought since you haven't received an answer so far. On my 83 500, the 4 nuts torque to 24 lb/ft and the 2 bolts to 18 lb/ft. If I remember correctly my studs are 10mm diameter and the bolts are 8mm, so if yours are the same size, likely the same torque, but I don't know this for a fact.
    The specs for these bikes came on a technical data sheet supplied with the owner's manual, hard info to find sometimes.

    Steve
  3. Kartwheel68 Husqvarna
    Pro Class

    Location:
    Newnan, Georgia
    Husqvarna Motorcycle:
    82 125XC, 250XC, 430XC, 430WR, 250CR
    Other Motorcycles:
    83 175WR , 76 250WR, 74 250 Mag
    Steve is correct, general torque for a fastener that size is 18-22 ft/lbs.
  4. jack topper Husqvarna
    AA Class

    Location:
    Cascade, MT
    Husqvarna Motorcycle:
    1974 400WR
    Other Motorcycles:
    honda, yamaha, suzuki, Indian, Kawas


    Don't know which model your '83 WR 250 is, but my workshop manual says:
    Model: Cyl head nuts (Nm): Cyl head screws (Nm):
    MK 10500 - 19499. 40 ---
    MK 19500+ 25. 20
    ML 6000 - 15999. 25. 20
    ML 16000+ 25. 20

    FYI: 1 Nm = 0.7376 ft-lb.
    Hope that helps...

    JT
  5. disonny Husqvarna
    AA Class

    Location:
    upstate ny
    Husqvarna Motorcycle:
    73 360 wr/rt, 75 wr250 78 cr250,
    Other Motorcycles:
    83 wr250, 84 wr400
    Thanks guy's, appreciate the help.
  6. jack topper Husqvarna
    AA Class

    Location:
    Cascade, MT
    Husqvarna Motorcycle:
    1974 400WR
    Other Motorcycles:
    honda, yamaha, suzuki, Indian, Kawas

    Sorry about the formatting of my earlier post...I'm new to this forum and haven't figured out how create a table yet ( it looked great before I uploaded it -- honest!!).

    In case my info wasn't clear, here it is a different way: If your engine has 4 Cyl nuts and 2 Cyl screws, then it's 25 Nm on the nuts and 20 Nm on the screws. If your engine doesn't have the Cyl screws, then the torque spec for the head nuts is 40 Nm.

    JT
  7. Crashaholic Husqvarna
    Pro Class

    Location:
    Antelope Valley, CA.
    Husqvarna Motorcycle:
    73 450WR 6spd motor in a 75 MK frame
    83 Tech Specs, the attached PDF is far more legible.

    Technical Specs 83 Huskys.jpg

    Attached Files:

    SteveJ likes this.