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 The previous version was outdated and no longer supported.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

1976 WR 250 Femsa no spark/Need wiring diagram

isaacsjohnston

isaacsjohnston

Husqvarna
In the spring I bought a 1976 WR 250 from near Edmonton, Canada. I live in the US and was going to have a friend pick it up and I could meet him where he lives next to the border. Well, you know how that turned out. After many calls to both sides of the border I finally was able to cross just over and load the bikes from my friends truck to mine. It was now August.

When I got home I gave the bike a look over and it was not in as nice as condition as had been described. It was supposed to only need tires, a front fender and a seat cover. I was told a full top end rebuild had been done and it ran great.

I found that the spark plug was not tightened all the way and when i checked for spark, it had none.

I pulled the kill switch and still nothing. I checked the coil connections, ground the paint on the fram where the coil mounts, and still nothing. The wires looked a little suspect, one connection with only electrical tape. I had no wiring diagram so I moved on.

I pulled the magneto cover and went to pull the nut. With hardly any effort the end of the crank snapped off in my hand! On closer inspection the end of the crank had been broken and very badly welded back on. In the photos linked you can see that only a little fresh metal broke when I rotated the nut. I could also see that the nut had been rubbing on the inside of the magneto cover because it wasn't tightened on all the way. The magneto was not even pressed onto the crank shaft and came right off.

Looking at the stator I noticed a loose wire coming off the points.

This was all very disheartening. I called the PO and he stated to not no anything about it and said he was broke and couldn't refund me partial money for the repair. Not stoked.


Photos here:

https://www.dropbox.com/sh/eiwh24z8615ekcq/AAAokrSiBRmRVzWZEMUKzY-5a?dl=0
 
After shopping for a crank I called a local vintage parts house and the owner said "your crank is already screwed, why not drill and tap it for a bolt? If it works good, if not you have nothing to lose."

So I tapped it for a 7mm bolt. It seems to work well.

I also looked around for wiring diagrams for the FEMSA stator but didnt find any. I found a few illustrations that looked like the wire was supposed to be connected to the condenser top? So I replaced the wire and soldered it all up.

After cleaning up the crank and inside of the magneto with 800 grit sand paper, I remounted the magneto with the new bolt. The mounting worked great!

But after all this, I still have no spark.

Here are my questions:

- Does anyone have a FEMSA specific wiring diagram they can share?

- What is the best way to measure the stator and coil to see if they are in spec?

- I saw some upgraded ignition systems for this year husky, but none have a lighting coil. Does anyone know of a new ignition system for these that includes a lighting coil? I'd like to keep the lights on this WR.


Thanks and sorry for all the typos.

Isaac
 
You can use a 139mm diameter motoplat magneto from the 77 360WR, 78-80 390OR 390CR just to name a few. It will bolt right up.
 
motomwo said:
You can use a 139mm diameter motoplat magneto from the 77 360WR, 78-80 390OR 390CR just to name a few. It will bolt right up.
Click to expand...

That's helpful thanks!

Is that the route I should go? Is my Femsa setup not good?

I am hoping to test the current setup to see if it is completely broken before I throw it out. Does anyone have the information about how best to test these coils?
 
Bump.

I am really hoping someone can point me in the right direction to find a wiring diagram or a manual on how to test my stator and coil.
 
With Monsieur Visiteur 1948 having disappeared, a lot of questions will be harder to answer, he certainly knew his business and was always quick to help with info! There are loads of people on here with knowledge, even I know a bit about autos, but my visits are less with his threads gone!
 
stormer254 said:
With Monsieur Visiteur 1948 having disappeared, a lot of questions will be harder to answer, he certainly knew his business and was always quick to help with info! There are loads of people on here with knowledge, even I know a bit about autos, but my visits are less with his threads gone!
Click to expand...

Visiteur1948 has not disappeared. He was just online yesterday. And all but one of his threads are still up.
 
Bump on this thread.

- Does anyone have a FEMSA specific wiring diagram they can share?

- What is the best way to measure the stator and coil to see if they are in spec?

- I saw some upgraded ignition systems for this year husky, but none have a lighting coil. Does anyone know of a new ignition system for these that includes a lighting coil? I'd like to keep the lights on this WR.
 
Both my 1978 390WR's are fitted with a "Power Dynamo" system from Germany. They are now sold under the "Vape" banner. Mine have 12 volt lighting with over 80w of capacity. I opted for the DC version with a regulator/rectifier. Very bright lights and starts easy. Gets my vote :-)
I did try an "Elecrex World" system a while ago ....... less said about that the better !
 
grouty said:
Both my 1978 390WR's are fitted with a "Power Dynamo" system from Germany. They are now sold under the "Vape" banner. Mine have 12 volt lighting with over 80w of capacity. I opted for the DC version with a regulator/rectifier. Very bright lights and starts easy. Gets my vote :-)
I did try an "Elecrex World" system a while ago ....... less said about that the better !
Click to expand...

Thanks!
 
 
I am a little confused about what Stator to order and after emailing the folks at Tola Tools I am even more confused.

Here is what I emailed them "Will the power the front headlight and rear tail light on my bike? Or is it not equipped to run lights?
Can you verify it will fit my bike, a 1976 Husqvarna WR250? My bike is currently equipped with a Femsa ignition.
I want to make sure these questions are answered before I order. https://www.tola-tools.de/en/vape-ignition-ac-husqvarna-wr-250-360-110-femsa.html "
They responded with
"no, ac variants are just for ignition, no lights.

Please choose dc variants then.
Please choose the right system from your side, we don’t know your bike."

I find this very confusing because in the wiring diagram on the product page it shows a 12V lead going to lighting.

Has anyone bought this 12v AC version? It seems cheaper and I dont need a battery or side indicators that are possible with the DC version.

 
The AC and DC systems with lights are essentially the same. The DC system is an AC unit supplied with a voltage regulator / rectifier.
 
Update on this.

After finally sorting out what stator to get from Vape EU, I tried to purchase i online and it would not go through. I reached out to them again and was told they do not ship to the USA.

I put it to rest over the winter and now I am trying to get a stator.

I tried to reach out to PVL to verify they ship to the USA and what exact stator I should get but have not heard back.


Does anyone have any other resources for stators for my husky?
 
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