• Husqvarna Motorcycles Made In Sweden - About 1988 and older

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1988 250 WR, down shifting from 3rd to nuetral?

ajcmbrown

ajcmbrown

Husqvarna
Pro Class
My 1988 250 WR had it's first outing yesterday at the Cookardinia Vinduro in southern New South Wales, and while it is a great bike to ride, I have an issue downshifting from 3rd expecting to engage 2nd gear, only to find myself in neutral, if I upshift I find second gear, or if I downshift again I find first, so it's skipping second gear and going straight into neutral.
While talking to another Husky rider at the event, it was suggested that the small spring (16 11 684-01) on the shift rack that engages the shift drum may have lost tension and need replacing, sounds logical?
I can't think of any other scenario that could cause this issue, has anyone here found the same problem?
Tony.
 
i randomly broke that spring on a ride..that sucked..if you are getting a false neutral i would strongly suspect it stretched.
 
justintendo said:
i randomly broke that spring on a ride..that sucked..if you are getting a false neutral i would strongly suspect it stretched.
Click to expand...

It's not actually getting a false neutral, but going into neutral, downshift and it's in first, upshift and it's in 2nd. It's like a lack of tension on the shift drum is allowing it to skip second and go down to neutral.
I hope that makes sense?
Tony.
 
ajcmbrown said:
It's not actually getting a false neutral, but going into neutral, downshift and it's in first, upshift and it's in 2nd. It's like a lack of tension on the shift drum is allowing it to skip second and go down to neutral.
I hope that makes sense?
Tony.
Click to expand...
im thinking the something is wrong with the shift drum, not just the spring then.
 
Spring is ordered and will the first and easiest thing to try, if that doesn't fix it then out it comes!
 
thats what im starting to suspect. i have seen a few cases where that ball get jammed into the case and gets stuck there..
 
Tony, after studying on this a bit more I'm thinking the issue has to be related to the shift drum pins or shift drum itself. You described an issue that only occurs while down shifting and only between 3 going to 2. It works well everywhere else. So we are narrowed down to one spot on the drum. If the issue relates to part 20 or 22 from the previous pic it would seem reasonable that the issue would manifest itself in other shifting scenarios as well. Seems the only unique parts are the pins and perhaps a bad spot on the drum. I suspect the pins would see more wear.
Very interested to see the resolution for this one!
dIMG_1947.PNG
 
The number 22 isn't catching one gear shift to stop it, she's shifting two gears. Sounds like a pin came out of the shifter drum #32.
 
I just remembered that I took this pic for a friend who had lost a pin that stopped him upshifting past 3rd gear, it looks intact to me......

IMG20170221192852.jpg
 
that was then...this is now. it could have failed, bent or fallen out....only 10 months to the 10 year anniversary of Harrow, best get those spanners a spinnen..:D
 
That was it's first ride since that pic was taken, but I have decided to split the motor unless I find something obvious while disassembling it.
Tony.
 
If a pin fell out and the hex bolt came loose I'd loctite it. If a pin didn't fall out. Number 18, 20, 22 isn't stopping the shifter drum. She's shifting two gears. I say pull the clutch cover the problem is fixable right there. It's in the shifting system. The gears in the case is a simple design. Nothing would allow it to shift two gears. That I can understand.

Note, the older cases in the mid to late 70's I seen a shifting pin on the fork break where the little steel roller goes on due to fatigue. I was double shifting it when third showed up in neutral. She finally locked up. Oops broken fork. This is why I suggest buying extra parts if your gonna ride them we have to fix them. This was life before here and sleezebay. Hmmm third to neutral.
 
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