• 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st 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 The previous version was outdated and no longer supported.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!

All 2st Bike quit

dirt-dude

dirt-dude

Husqvarna
AA Class
Sunday my son came out of a corner and about halfway
down the straight the bike bogged and back fired and
quit. We thought it had fouled a plug but that wasn't
the case. We found the crank seal on the stator side
had been pushed out of the case, also found the reeds
had broken, they appear to have been pushed out not
drawn into the engine. Cylinder, piston and crank all
appear ok. The bike is an 04 CR-125 was running great
up till this happened. I think the fuel ignited in the
crank case any ideas what could have caused this?
 
Check for a sheared flywheel key, which allowed the flywheel to slip altering the timing.
 
Does the sparkplug still fire if you turn the engine over? Maybe something went wrong with other ignition parts (CDI or coil). CDI going out will make a bike do some strange things as it takes a dooky. My older Honda started to bog and misfire when the ignitor went bad, right before it quit running all together.
 
Yes it has spark. There"s allot of oil on the piston and crank, I'm
going to pull the clutch side apart and check the crank seal on
that side. What I'm thinking is possibly the seal on the clutch
side failed and drew enough oil into the crank case to cause the
crank case pressure to spike before the piston reached the transfer
ports.
 
Well I think that theory's shot. The trans vent was clear. I hooked
a mighty vac up to the trans vent and used a bore scope to look
into the crank case while I had the trans pressurized found no oil
coming in, and the trans held pressure so the seal on the clutch
side is not likely the cause of the failure. I think I may just replace
reeds and put the seal back in on the stator side and see what happens.
I had checked the trans fluid level was still right at the inspection hole.
 
OK, never mind. I was thinking too hard on this. You just blew a reed, it loaded up, back fired and blew the seal out.

Replace the seal and reeds and go.
 
Replaced the crank seal and reeds, started on the second kick. Everything seems ok so far. We ran it up and down the field several
times carberated properly and pulled fine. Hopefully it was a fluke
occurrence and we won't see it again.
 
Thanks motorhead I didn't see your latest post till I just reposted.
I was thinking the same thing when I couldn't find the smoking gun.
 
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