• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st 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 The previous version was outdated and no longer supported.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!

That sudden bog off idle...

7point62

7point62

Husqvarna
AA Class
... on your older 4-stroke may not be the accelerator pump.

Today I got bored waiting for my suspension to turn up (I was promised a week turnaround and it's been a month already) so I put on the subframe and tank, fitted the battery and pressed the button. She fired up straight away, but there was occasionally a slight hesitation when I blipped the throttle. It was pretty dark, so I just caught something out of the corner of my eye - it was a spark jumping from the plug cap to the head - and it exactly coincided with the hesitation.

A new plug cap is on the way and hopefully it will save me a bunch of messing with a.p. jets and whatnot.

Rule 1: Make sure all the mechanical and electrical stuff is working before messing with carburation. :lol:

The bike has always tended to stumble occasionally when blipping the throttle on the stand, but it's always ridden fine, so I never investigated. When I get the new plug cap on I'll let you know.
 
I have had that on the 09TE450 as well- one day (that I noticed it) the bike kept randomly dying at idle on the stand. I noticed the spark plug cap and saw a spark jump from the cap to the cylinder wall. It did this numerous times. This was with a newer Iridium spark plug. So I knew that should be good itself. I pulled the cap off the plug and sprayed electrical contact cleaner inside the cap and blew inside with compressed air- then wiped of the spark plug tip. Started it back up and all was good. I also plan on getting spare/replacement spark plug caps. Stock or NKG (if so which part number)?

Apparently once the spark makes the jump numerous times it leaves a carbon trail and will be more likely to do it again. I guess cleaning with contact cleaner can erase the carbon trail- but replacement is the best bet.
 
I have one of these on the way...

505041.jpg


NGK SD05FM. Apparently it's 108mm long so it's about the same size as the original. It doesn't have the bung on the end to stop mud getting into the plug well, but it tends to get in there through the drain hole anyway... As it's an NGK the screw-on terminal on the top of the spark plug isn't required (I have a new plug on the way too). If Husky Sport had been open at the time I would have called them to ask the price of a new oem cap, but it was late.
 
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