• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • 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 The previous version was outdated and no longer supported.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!

'81 250 WR - Jetting / Fuel / Fouling plugs / Workshop manual

L

Luckypuck77

Husqvarna
AA Class
Getting the bike ready for 9 days of riding out in the mountains of Colorado...

I'm hoping that my questions are not repeats and I'll apologize in advance if the information is already on Cafe Husky. (I'll plead rookie)

1) I'm looking for the owner's manual, service / workshop manual and any other publication relative to a 1981 250 WR.

2) I'm fouling plugs and suspect I'm running to rich. Does anyone know the recommended oil / fuel mixture? I have been running 40:1, but at that mixture, the bike smokes a lot, the plug is damp and not a light golden brown in color, and I drip oil from the exhaust.

3) Relative to jetting, I'm looking for guidance at 500 ft. elevation (Dallas, TX) and then for 8,500 - 11,500 ft. elevation (Colorado mountains) recommendations for jet sizes and corresponding needle settings would be great.

Thanks in advance for your response.

Regards,

Steve (Luckypuck77)
 
The factory recommended 4% (25:1) but seems like most people run between 32:1 to 50:1 so you will be just fine at 40:1 but you need to jet you bike accordingly. (your fuel mixture is not rich but your jetting is) You really need to lean out your jetting for Colorado. Are you running the stock jetting? or what jetting do you have in the carb now? Go to the Vintage Tech Ref section then scroll down to Vintage Jetting & Tuning, click on this and read the Sudco manual and you will be a jetting guru in no time.
 
I too live in Dallas and ride at high elevations in Colorado. Believe it or not if you get it running nice and crisp in Dallas it will do fine at 12,000. My 430 WR runs perfectly around the DFW area and also ran great last August at almost 13,000 around Lake City, CO. It also started on the first kick every time on that trip. We are going back a week from Monday and I expect it to do the same this year.

Start with the stock jetting with a clean air cleaner. Buy the next two smaller sizes of main and pilot jets and start with the main jet and experiment. The jets are cheap and you can get them anywhere (try a Yamaha dealer or Two Wheel World). Also, I run BelRay MC1 at 50:1 but mine is water cooled. If you lean out the premix ratio it will fatten up the fuel air mixture: more gas going through the jets.
 
Luckypuck77;36020 said:
Getting the bike ready for 9 days of riding out in the mountains of Colorado...

I'm hoping that my questions are not repeats and I'll apologize in advance if the information is already on Cafe Husky. (I'll plead rookie)
Click to expand...

Please do not worry about asking a question! :thumbsup:


So how did the bike run in CO?
 
Steve,
Like Lhill & tommie D suggested, start with a clean airfilter, read the
Sudco manual too, so you understand how the carb circuits work
together. Start with fresh gas & know good or new plugs, clean
carb too. Remember 32:1 is leaner than 50:1 not the other way
around, more oil in the gas means less fuel,which equals leaner mixture

But i'd say pull the carb & see what's in there (jets), Stock Husky jets
(settings) are on the rich side to begin with. You need to determine
where the bike is running rich (throttle position), before you waste
time & money taking the carb apart too many times:banghead:,
changing jets & needle positions.

Here's a couple of jetting links
http://www.all-offroad.com/DirtBikes/Beginners/BGNov98.html.

http://www.outlawnet.com/~oclass/motocross/jetting.htm

John
 
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