• 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 The previous version was outdated and no longer supported.

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    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!

Husky CR 500 ignition timing

M

Martint93

Husqvarna
AA Class
Hi, does anyone out there know the ignition timing for a 85' cr 500? I'm going to run the SEM ignition..
how is the ignition timing for a 87' 430? also with SEM ignition..

thanks Martin
 
Martint93 said:
Hi, does anyone out there know the ignition timing for a 85' cr 500? I'm going to run the SEM ignition..
how is the ignition timing for a 87' 430? also with SEM ignition..

thanks Martin
Click to expand...
I belive that ignition timing for the 500 is 18 degrees of crank rotaion before tdc or measured from the piston it should be 2.8mm before tdc.
Tfhe 430 should be 17 degrees or 2.2mm before tdc.
 
Why SEM? Those tend to run backwards sometimes. Should've gone with a Motoplat or an aftermarket Medium Shaft MZ-B ignition.
 
what do you mean by run backwards? that the engine fires up the wrong way? how do you make that happen?
I run my 430 at 2.05mm BTDC and it has never happend to me..

I run SEM because it was original on my 430 and it has better light than motoplat I think (70w vs 35w)
 
I have seen some very light flywheel equiped bikes fire up and run backwards if the timing is far enough off and you kick them very slowly but that is rare on a Husky and not really dependent on which brand of ignition you are using. It takes a perfect storm of misadjustments to make that happen.
 
rajobigguy said:
I have seen some very light flywheel equiped bikes fire up and run backwards if the timing is far enough off and you kick them very slowly but that is rare on a Husky and not really dependent on which brand of ignition you are using. It takes a perfect storm of misadjustments to make that happen.
Click to expand...
Do some reaserch, the SEM ignitions had failures and fired backwards, it was a common problem. Happened to my father, two of his friend, and my uncle. It had nothing to do with ignition timing, it was an actual failure causing the bike to run backwards as 2 strokes can run in either direction.

Every time this happened to them the bike was running, then all of a sudden the bike would stall then back fire and the tire would lock up. So it fired backwards all of a sudden, not if you kicked it slowly or not. They would restart the bike and sometimes it would fire the correct way other times it would take a few tries to get it back in the right direction. My father is also a certified motorcycle tech who has been doing this his entire life, so the ignition timing was never off, just a simple failure in the ignition system.

The motoplat ignitions never had this issue, onle SEM.
 
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