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

One hole too many

Discussion in 'Vintage/Left Kickers' started by Brad-in-STL, Feb 24, 2017.

  1. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    So I took my new-to-me '85 400WRX for the first woods ride today. Very nice on single/double track. The WRX actually feels lighter than my TE250.

    However, at the end of the ride the rubber pad on the clutch cover fell off revealing a pretty good size hole from the kick starter. I didn't have any gum ;), so I was done for the day.

    This looks too big for JB weld, right? Get it welded? Thoughts?

    Thanks in advance.

    Attached Files:

  2. grouty Auto Lover ...

    Location:
    South West UK
    Husqvarna Motorcycle:
    78 390WR, 78 390 AMX, 500 Humph
    Other Motorcycles:
    works 73 CCM 520, another 73 CCM520
    New cover required !
  3. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    :censored: I was afraid of that! :censored:

    Just in case I asked a professional welder friend to give it a try, what is that cover made of? Aluminum?
  4. jo360 Husqvarna
    AA Class

    Location:
    perth australia
    Husqvarna Motorcycle:
    1983 exc framed wr430 engine
    Other Motorcycles:
    ktm 520exc
    Got mine welded up, same problem my case was magnesium cost of repair was $25.
    Take the cover off clean off all the oil and take it back to bare metal aound the weld area, heated the area with a propane torch t sweat out any additional oil .
    Have the shop weld it and you do the final grinding and sanding fill any small pits with jb weld, sandback and paint.
    Look at the kick start stopper thread on this page for ideas on a suitable glue, make up a rubber pad and stick her on.
    One thing i did was grind back the pawl plate on the inside of the clutch cover about 10mm so it engages the mechanism earlier inthe stroke.
    Dont put too much tension on the return spring.
    Magnesium is flammable esp in dust form,use sand to extinguish or a suitable fire extinguisher .
  5. Bigbill Husqvarna
    Pro Class

    Husqvarna Motorcycle:
    '83 250wr
    Other Motorcycles:
    0 right now
    I'd patch it. Bend a piece of aluminum to fit and weld it, its most likely magnesium.
    I wash it, hit it with a flame to get the oil off.
    I tig weld it in a box I flood with argon. This way no fires.
  6. justintendo klotz super techniplate junkie

    Location:
    mercer, pa/northwest pa
    Husqvarna Motorcycle:
    84 250,86 400,87 430,88 250,95 360
    Other Motorcycles:
    99 kawasaki zrx 1100
    you can weld aluminum to magnesium?
  7. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC
    find out the material first
    it is liquid cooled, correct?
    the early covers were magnesium and the later ones were aluminum
    does it have an extra screw hole? behind the vent tube?
  8. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    OK... next question - can someone send me the thread for clutch cover removal for an '85 400WRX?

    Premo, I don't see an extra screw behind the vent tube... what does this indicate?
  9. jo360 Husqvarna
    AA Class

    Location:
    perth australia
    Husqvarna Motorcycle:
    1983 exc framed wr430 engine
    Other Motorcycles:
    ktm 520exc
    Magnesium will oxidise/ bubble when white vinegar is in contact with bare metal aluminium wont.
    2premo likes this.
  10. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC


    take a pic of the cover and post

    to pull the cover lay the bike on it's right side, remove the screws and lift the cover off

    if you want it off to weld
    dump the coolant by removing the hose to the water pump
    drain the transmission and remove the screws, leave the shifter and kicker on till you remove it
  11. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    According to the Lincoln Welding site the answer is no.
  12. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC

    the extra screw is a later design cover and aluminum most likely
  13. Bigbill Husqvarna
    Pro Class

    Husqvarna Motorcycle:
    '83 250wr
    Other Motorcycles:
    0 right now
    I believe that if you use magnesium TIG rod it will weld the two different metals together.

    Checkout the certainium website.
  14. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    Here's the photo of the vent tube area:

    Attached Files:

  15. jo360 Husqvarna
    AA Class

    Location:
    perth australia
    Husqvarna Motorcycle:
    1983 exc framed wr430 engine
    Other Motorcycles:
    ktm 520exc
    Would just ring round and see who can do the job, specialised aircraft guys do it but charge more.
    Let them know its a magnesium alloy anyone who repairs chainsw cases will do the work.they will test metal before starting, stick with magnesium to avoid chrystalisation of blended metals once repaired make sure you grind back the inside if it potrudes into the clutch basket area.
  16. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    That's what I was thinking. As long as the internal dimension is the same I don't really care how it looks on the outside.
    Thanks for the replies... :applause:
  17. Brad-in-STL Husqvarna
    AA Class

    Location:
    Greater St Louis Area
    Husqvarna Motorcycle:
    '80 390 WR
    Other Motorcycles:
    '79 XR185, '81CR125, '07 Ducati ST3
    Wow. I learned a lot when removing the clutch cover on this Husky. I've not seen the kicker and shifter come off with the cover. Those smart Swedes. Found some balls of JB weld in there from previous fix attempts, that can't be good.

    Which leads me to the next question: Are these "notches" in the teeth on the clutch basket gear supposed to be there?

    Also, does the new cover gasket go on "dry"?

    Thanks in advance.

    Attached Files:

  18. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC

    the notches as yours have are on another thread, same question

    yes the gasket typically is dry, silicone is your friend

    can we see a pic of the inside of the cover
  19. justintendo klotz super techniplate junkie

    Location:
    mercer, pa/northwest pa
    Husqvarna Motorcycle:
    84 250,86 400,87 430,88 250,95 360
    Other Motorcycles:
    99 kawasaki zrx 1100
    gasket seal the gasket to the clutch cover, with a light coat of grease of the other side of gasket. the gasket will then be reusable and wont leak...will just stay stuck to the cover.
    RUF, 2premo and Palito like this.
  20. suprize Husqvarna
    Pro Class

    Location:
    Bendigo, Australia
    Husqvarna Motorcycle:
    WR 400, bike in a box Moto Villa 350
    Other Motorcycles:
    ktm 300
    when the pawl and the kicker setup are reassembled wrong or theroller bearings in the main case die the kicker gear can savage the clutch ring gear like that. usually a "new Husky owner" like I was 40 years ago will pull the kicker and the gear lever off the first time they take the clutch cover off ....then the fun begins. inevitably the kicker gets reassembled 1 spline to far and there is a hell to pay inside.:eek::oldman::naughty: