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 The previous version was outdated and no longer supported.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

1984 500 AE Wont Start

Terrence

Terrence

Husqvarna
B Class
NEw top end, rebuilt ignition system by reputable Vintage Motoplat expert and still I can not get the bike to run. The longest it has run was about 30 seconds. Anyone have any suggestions?
 
I once broke a reed and could start the bike but it wouldn't do anything but idle or die. It probably wouldn't have run all that long without stalling if I gave it a chance. That is the closest to what you describe I have had happen. It was about 15 to 20 miles after getting it started from flooded by pulling with rope which I never did again and never broke a reed again. It was pretty much that cylinder and reed cage you have.
 
Pull the flywheel off to see if you have sheared off the woodriff key. You will still see spark and a wet plug, but it's not going to start because the fire and fuel are not dancing together.
 
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Puckerbush said:
Pull the flywheel off to see if you have sheared off the woodriff key. You will still see spark and a wet plug, but it's not going to start because the fire and fuel are not dancing together.
Click to expand...
Flywheel key is fine, gettting spark, but looks weak to me, but Im told these old Motoplats dont put out much. By chance I checked the compression.... only 65-75psi.... I think it's supposed to be 150psi. Now I am tjhinkingi need to have the head ground to get a good seat as I think this is where it is blowing by. Does any of this sound correct?
 
Terrence said:
Flywheel key is fine, gettting spark, but looks weak to me, but Im told these old Motoplats dont put out much. By chance I checked the compression.... only 65-75psi.... I think it's supposed to be 150psi. Now I am tjhinkingi need to have the head ground to get a good seat as I think this is where it is blowing by. Does any of this sound correct?
Click to expand...

Are you sure your getting fuel? Did you try a few good squirts of starting fluid directly into the carb?
To get an accurate reading you will have to be giving a real good kick but 75psi seems to low, my 430s run about 130psi. Who put the top end together? Did you have it bored or honed? Did you check the ring end gap? Did you install the piston with the arrow pointing towards the exhaust port? Did you install the ring correctly on the piston with plenty of lube? Did the ring move freely on the piston?

You should be able to find more info in the Vintage Tech Ref and Parts section. If you can't find the exact shop manual, you should be able to find one for a air cooled 500 close to that year.
 
Terrence,
If you only got 75psi max, with fresh top end, there's something wrong, a 500 has a ton of compression. I'd pull the top end off & double check the
items Husky Jim advised. What Fran mentioned you could also check while the top end off. Does the motor have a new base gasket? My 84 500CR has
major league compression, so there something not right.

Husky John
 
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