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

250-500cc about that decompression head

Discussion in '2 Stroke' started by taps, Jan 9, 2018.

  1. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    A year ago I decided I would need to freshen the top end on my '94 wxc360. It had always run well, but it was a bit down on compression. Well, I just buttoned it back up, and I almost got it started up when I broke the kickstarter in half. Another good kick, and I think it would have caught. Looks as if the pin bent and then the lever let go.

    Aside from fixing a worn piston and an air leak, nothing should have changed. I went back with the same .020" base gasket, and went up to the next letter piston. I have the receipt from when the previous owner did a topend, and it does say they sold him two .5mm gaskets. I only see the one. I can't think of what I could have done weird, but I don't want to kill another kickstarter or the case. I have heard that it is mainly the later bikes that need the decomp head, but this thing takes some boot to kick. Anyone running a decomp head on one of the older cylinders?

    Edit: there were two gaskets! Time to bust it down again!

    20180109_215929.jpg
  2. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    I'm pretty quick doing topends on these things now! Have both gaskets in place. Ended up with a .3 and a .5 - should help kill off some compression. I guess this is the best time for a kickstarter to break. Would suck 15 miles back in the woods.
  3. rancher1 Husqvarna
    Pro Class

    Location:
    WA
    .8mm was stock back in 1994 fyi.
    taps likes this.
  4. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC
    did you do the squish check?
    piston in cylinder and bottom out
    put on bike check difference
  5. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    Not the first time, but then I saw the post on here about it before I tore it down again. Definitely needed the two gaskets to be in spec, but no collisions the first go. Lots of compression though ;)
  6. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    The bike runs! I am still waiting for a 250 kickstart to show up from overseas, but I was tired of it not running so I did a little push start action. My wife isn't going to be pleased with the skid marks in the driveway, but she should be happy the bike is functional...if I have a decent hill.
  7. 2premo Husqvarna
    Pro Class

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

    overseas? where are you located?
  8. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    I'm in Texas. Hall's acted like they have one in stock, but they are $30+ higher on the part + $14 shipping. I'm not in a rush, and I needed some other stuff from motosport at the same time. But yeah, unless motosport and two other dealers (the local & Munn) were mistaken, there are none in US warehouse(s).
  9. 2premo Husqvarna
    Pro Class

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

    my dealer has one
    taps likes this.
  10. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    I'm guessing they were a dealer before the ktm adventure began.

    For next time: Who is your dealer? :)
  11. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    I laughed when I saw this ad on ebay. Mine must be worth like $60 since the pin is still in one piece! :thumbsup:

    "Up for sale is a kickstart pedal removed from a Husky CR250, year unknown and there is some damage and a broken bolt but it can be repaired."

    kick.jpg
  12. brian bush Husqvarna
    AA Class

    Location:
    Colorado
    Husqvarna Motorcycle:
    '93 WXC360, 2018 TC150
    Other Motorcycles:
    A few KTMs and Husabergs.
  13. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
  14. brian bush Husqvarna
    AA Class

    Location:
    Colorado
    Husqvarna Motorcycle:
    '93 WXC360, 2018 TC150
    Other Motorcycles:
    A few KTMs and Husabergs.
    Glad that worked out well for you!
    taps likes this.
  15. taps Husqvarna
    AA Class

    Location:
    TX
    Husqvarna Motorcycle:
    '94 WXC360
    Other Motorcycles:
    '15 RMZ450, '08 RM250, & '74 MX360
    Received it yesterday and just came back from a shakedown run with the new front end, top end, intake boot, kicker, and carb. 13 miles in, and all is good with the world.
    brian bush likes this.
  16. guscycle Husqvarna
    AA Class

    Location:
    Florida
    Husqvarna Motorcycle:
    '99 Husky CR250, '07 Husky WR125,
    Other Motorcycles:
    '10 Husky SMR450, '98 Husky Scooter
    I have an '02 Husky CR250 that I made into HELLUVA CR300 ( thanks to the folks at Millennium Technologies for the big bore, port work , correct squish and hi -comp head). That last note about hi compression didn't work very well with that odd shaped kick-starter , so off the head went to Larry Weichman to do his magic installing a factory looking decompression valve--- WHAT A DIFFERENCE!...kicks over like a 125! Even if you don't have the hi-comp head, this mod makes it stupid easy to start. I posted this previously, I'll try to find it...His number is 815-623-8940
    taps and lankydoug like this.
  17. WVdag Husqvarna
    AA Class

    Location:
    Smithville, West Virginia
    Husqvarna Motorcycle:
    2007 WR250 W/300 kit, 2013 CR125
    Other Motorcycles:
    1987 Harley FXLR 10th year edition
    I can also vouch for larrys work. I have a 300 kit on my 07 w/hi comp head and 60 year old legs. The compression release is like magic and it looks like factory made.