1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    WR = 2st Enduro & CR = 2st Cross

Chain Adjusting Bolt Seized

Discussion in '2 Stroke' started by Husky449, May 31, 2020.

  1. Husky449 Husqvarna
    AA Class

    Location:
    Australia
    Husqvarna Motorcycle:
    2009 WR250, 2011 TE449
    Hello all, one bolt of my chain adjuster has seized on my WR250 and now almost refuses to move. I am worried about snapping it and having to do all the redrill and hard work that goes with that task. has anyone else had this problem and if so how did you overcome it? Any help is much appreciated.
  2. Darkside Husqvarna
    AA Class

    Location:
    SF Bay Area
    Husqvarna Motorcycle:
    none left
    Other Motorcycles:
    beta, ktm, aprilia
    heat it up with a torch. sometimes that will break the corrosion
  3. hhdwtmtw Contributing Member

    Location:
    Melbourne, Australia
    Husqvarna Motorcycle:
    2014 TE300 and a few 2011 TE449s
    Other Motorcycles:
    Royal Enfield Continental GT 650
    I've had this happen too. I forced the old bolt out, repaired the thread with a helicoil kit and inserted a new bolt using antiseize on the threads.

    I should have put anti-seize on the adjuster bolts on day 1.
  4. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    93 360, 87 CR250, 82 87 88 430
    Other Motorcycles:
    Sherco 300
    does your swing arm have a hole on the side?
    my 98 had that problem, put a bunch of liquid wrench in there, using a heat gun got the aluminum warm
    the aluminum expands faster than the steel bolt so some leaked in
    the patiently got a little movement, then more and got it out with no damage
    lubed up two new bolts and replaced both sides, I used Maxima waterproof grease
  5. Hurky Husqvarna
    AA Class

    Location:
    Spain
    Husqvarna Motorcycle:
    WR300 2010
    Other Motorcycles:
    Yamaha WR480F 2008
    Like 2premo said, those swing arm holes can let water in and accelerate corrosion on the part of the bolt that protrudes inside the hollow part of the swingarm. (I ended up using some silicon on the swingarm plugs to avoid that)
    Some penetrating oil and some heat from a torch, you can leave it soaking over night, then more heat and slowly work the bolt some turn out, some in etc....

    I recently prepared a bike a friend of mine bought new and one of my routines was to remove the new swingarm tensioner bolts and applied plenty of anti seize to them.

    Cheers !
    2premo likes this.