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

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

250-500cc Where do I start?

Though the metal spring jobbie went across the front of calliper both sides an held both pads back. Has it snapped in half?
 
Nah hasn't broke jus wasn't sure if there meànt to be 2? The clip that sits behind the pads I talkin bout
 
Nope I've only got one spring metal thing at the front on both callipers, think I know what you mean and I think those are optional for manufacturers of pads.. I hope
 
Not sure exactly wat it does but yeah that rectangular semi curved thing that clips into caliper. Maybe stops em rattling? Both mine are in the bottom position(behind lower piston of caliper)
 
Rito well fresh fuel still at 32:1, PJ wound in to 3/8 from seated n stator/flywheel wd40'd(was clean n dry but gave it heaps regardless) n no improvement! Fouled another plug following kids around on their bikes(1-2 gear low revs).

I'm gonna get another new plug, run some 40-50:1 n lean rod out half a turn(shits me havin to take tank off but it's clearly running way rich at 1/8-1/2 throttle!). Will set PJ back to half turn from seated n adjust if necessary. It's bn pretty bloody cold here lately as in 10-15C down from 30-40C in summer so all I can think is that it must have bn rite in the edge of being too rich in summer n now it's jus too rich for winter?! Il try do it today n ride tomoro but feel like shit with manful(really shithouse!) so maybe not till midweek
 
dont change oil ratio for jettings sake...if you do the math, the difference in oil vs the gas it displaces is almost nothing. altho i am a fan of 40:1 if you arent constantly wringing its neck, 50:1 for mostly trail.
its all in the jetting, ifs its your problem to begin with. you said it suddenly changed however??
as for temp changes, you will need a little more fuel in the cold, a lil less in the heat. i ride with studs in the winter and change very little on my 360 w/lectron going from summer to winter however..
 
Ahh yeah I always forget which way it works for winter/summer. Theoretically it should be leaner in winter but it seems to have gone the opposite. I can't see wat else it could be? What would cause plugs to foul other than jetting? Fiłters good, pipe n silencer good. Only thing I did was seal pipe/exhaust manifold with rtv sealant.
When it's runnin clean after a few WOT runs it's normal/perfect but ride bit of single n it loads up n wants to foul. Mite jus go to 40:1 anyway.
 
Geez shawry it's frustrating when these things seem to appear with no obvious cause.

Would a badly leaking pipe/cylinder connection cause a lean mixture?? You say you've sealed it up now, so I'm wondering if that's contributing to a rich mixture now.

You also mentioned fitting the fuel bowl reinforcing plate, did you remove the carb to do that? Is the carb maybe tilted slightly?

If worse comes to worse you can send the lectron to me and I'll send ya my PWK. Just saying.
 
I dunno I never sealed it up with rtv before but had some so gave it a crack to ensure she's sealed 100%. I swapped from gnarly back to stock pipe but it has done it with both pipes. Had new crush washer n pipe orings too.
Yeah I guess it could potentially have bn lean for years due to not sealing properly(jus relyin on viton orings to seal). That is a very good point Oldscool!!! The pipe orings on the gnarly had broken down(cracked/perished/gone hard) wen I removed it for repair n I hadn't sealed it up with any rtv. The first time it happened coupla rides ago was after a poor arse log hop attempt that squashed gnarly up a bit n caused it to not seal at exhaust flange(spooging out one side). Wonder if it ran rich for that last half hour of ride time with the busted gnarly due to poor seal/lack of back pressure/inefficiency running?! Then wen put oem pipe back on with new orings n sealed properly it's runnin rich?!!!
 
I think either way I'm gonna lean it out half a turn on the rod n run it at 40:1 n c wat happens. As it is it's incredibly frustratin to ride unless u jus ride it at 1/4 throttle! I think my rod is at about 50-50.5mm(3-2m) so should be ok to go bit leaner(51mm). Will grab a new plug in town tomorrow n try it!
 
The bike I just sold (WR250) fouled plugs on super cold mornings. Changed the heat rating at the recommendation of my local Kato dealer (Just needed a plug and they were closest) and never had a problem again. Can't remember what they were, but they looked at the plug and said to change heat rating, especially in winter. May not be related, but fixed mine.
 
shawbagga said:
I dunno I never sealed it up with rtv before but had some so gave it a crack to ensure she's sealed 100%. I swapped from gnarly back to stock pipe but it has done it with both pipes. Had new crush washer n pipe orings too.
Yeah I guess it could potentially have bn lean for years due to not sealing properly(jus relyin on viton orings to seal). That is a very good point Oldscool!!! The pipe orings on the gnarly had broken down(cracked/perished/gone hard) wen I removed it for repair n I hadn't sealed it up with any rtv. The first time it happened coupla rides ago was after a poor arse log hop attempt that squashed gnarly up a bit n caused it to not seal at exhaust flange(spooging out one side). Wonder if it ran rich for that last half hour of ride time with the busted gnarly due to poor seal/lack of back pressure/inefficiency running?! Then wen put oem pipe back on with new orings n sealed properly it's runnin rich?!!!
Click to expand...
Going from 40:1 to 50:1 makes it richer and not enough to correct a jetting problem anyway. Also changing the pipe will almost always require a jetting change. My wr250 needed re-jetting from stock to Gnarly and from Gnarly to 2CS pipe. Once it's right weather and altitude has little effect on the Lectron jetting, that's one of the benefits of a Lectron
 
? Leaner 40 parts fuel to 1 oil
50 parts fuel to 1 oil so leaner. Less oil per fuel is about half a percent leaner in the mix.
 
Rich and lean applies to fuel, more oil per fuel is leaner just as more fuel per oil is richer. Yes the percentage is small either way and not likely to require re-jetting unless you go to extremes like 80:1 or 25:1

The carb is metering liquid mix if you put more oil in you get less fuel per the same amount of liquid so 50:1 is richer than 40:1 Also it's been proven that more oil will make more horsepower but when you get around 25:1 you really have to ride hard to keep the heat up enough to burn all the oil all the time and not saturate the silencer packing.
 
It was on same setting with gnarly for a year or so n runnin perfect or close to it(jus after u were here juicy-I actually went 1/4 turn leaner after fitting gnarly which is generally opposite to wat ud do with aftermarket exhaust). Gotta be sumthn to do with sealin pipe junction or takin bowl off carby to fit bowl brace. If it was a blockage tho it wouldn't foul plugs it'd jus stutter wen throttle whacked etc
 
Oldscool said:
Geez shawry it's frustrating when these things seem to appear with no obvious cause.

Would a badly leaking pipe/cylinder connection cause a lean mixture?? You say you've sealed it up now, so I'm wondering if that's contributing to a rich mixture now.

You also mentioned fitting the fuel bowl reinforcing plate, did you remove the carb to do that? Is the carb maybe tilted slightly?

If worse comes to worse you can send the lectron to me and I'll send ya my PWK. Just saying.
Click to expand...
good ideas but tilt wont affect the leccy much...
after i was futzing around getting mine level as possible (hey i was using the built in 'level'), my friend started making quips...so i purposefully left it a good bit out of whack...the tron didnt care, lol..
i still get it close! another benefit of the clear bowl
 
Try with out sealing, I would keep mix the same an just try and sort it with carburetion.
Your bikes ripped and sounded good when I was there.
So you've already leaned it out on needle and sealed exhaust, just do the trial an error method. Did it run better? Worse rinse and repeat.
 
Yeah sorry boys jus thinkin out loud sorry to drag this on jus wanna sort it so can ride relaxed not havin to worry bout swappin plugs n bike runnin like a dog-worst feelin wen ridin. I'm gonna try leanin rod out first as I did such a good job of sealing the exhaust juicy! Hopefully get a chance in the am to play with it n get a quick ride in. Stupid manful!

Lectron in nice n straight I'm a little OCD Oldscool! :)
 
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