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 The previous version was outdated and no longer supported.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

How to time a 87 250 WR

photoguy_43420

photoguy_43420

Husqvarna
AA Class
It's been almost 15 years but I have finally got my 87 250 WR back together. I have never timed this bike it has the Moto Plat Mini 6. I only have timed internal rotor not external rotor. I know you need to line up the tiny hole in the rotor and the stator. If it lines up should that be TDC? Then what are the degrees should be set? I have no tech sheet for this bike.Any help would be great.

Thanks,
Guy
 
The holes line up when it actually makes a spark, at least the way I remember it. I put a picture of a wooden protractor thing I made for use with a timing light to test out the accuracy of the hole and pin method. Using this it is only necessary to stick the dial indicator in the spark plug hole once I made top center line up woth the bolt hole as you see. In my case the object is to eliminate kicking back.
timing.wood.protractor.JPG
 
Thanks for the info. I was not sure if the hole and peg was to be TDC? As this ignition was off the bike when I got it so there are no marks. I see in the Tech sheet it's talking 9 degrees I assume that's BTDC. Fran it look like your running 12 degrees Before TDC. I have never worked on one of these external flywheel jobs. Do you turn the inner part how then how do you know that in relation to the fly wheel. Or in your case Fran whith your marks did you just keep turning it and running it until you got what you wanted?
 
The specs seem to give a distance down from top of the stroke, a degree, and a distance along the circumference of the rotor. Mine is a wr430 and the spec in the manual is 18 degrees as I recall but I backed it down to 12 and if it kicks back now it isn't often or hard. The stator has slots the machine screws that hold it in place go through. The official way is to get the piston down before center the spec and bolt up stuff with the pin in place going through the rotor and stator. In my case I can put the crankshaft in such a position I like on the degree wheel, loosen the stator and tighten it down at another place with the pin. The error seemed a degree or so at most compared to the light in the set up in the picture. A timing light works for making sure mine is a 12 volt one I just put it on an automotive type battery and the only thing on the bike is at the plug/wire which in my case just snaps around it. Looking through the specs on the various models there seems quite a variation in the timing value.
 
Ok I just finally got a new dial indicator to time the 87 WR. From the tech pages I have seen it should be around 9.5 degrees btdc. Well I have adjusted the backing plate and the front plate and the closest I can get is like 14 degrees btdc. Anyone had this problem? It has Motoplat.
 
I'm using the spark plug dial indicator. This is so goofy I have had 430 CR with the internal fly wheel and 73 WRs with the fesma are way easer to time then this..
 
Hey photoguy, I had to time my 87 250 xc a while back . It was actually running in reverse... Yes backwards ,the bike when running would go in reverse...
I too bought the dial indicator that went in the spark plug hole and advanced it to the proper degree. The bike would run but still in reverse and would vibrate more than normal. So I move the plate all the way to the end of the brackets where the screws fit just at the ends of the slots ( with out the indicator ) and I be dammed it worked... The bike starts right up every time and runs perfect. So I would try moving it untill it runs the way it should , the plate will only let you adjust it so far, so I dont think you could really do any harm. It worked great for me starts good , runs good , no kick back any more either.
 
It took some time but I finally got her running right. I have the stator plate and the stator adjusted all the way clockwise and she is running fine. I will take the internal Motoplat any day over this kind way easier to time.
 
good deal photoguy...its hard to explain the way to do it, but once you sit down and do it, its not bad. my 88 had the sem that had the faulty brainbox that made them run intermittantly in reverse, so i swapped in mini 6 motoplat setup...i also have the plate and stator almost the whole way retarded to get the .61mm...
 
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