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 The previous version was outdated and no longer supported.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

Air intake backfire screen

cbreakin

cbreakin

Husqvarna
AA Class
How many of you guys have removed the backfire screen in the intake on your FI Husky four strokes(TE/SMR 450/510)? It looks like a pretty substantial restriction to intake air flow. If the screen is removed are you running a risk of burning the bike down? Thanks in advance!
 
Agree it's way restrictive in appearance anyway. Pulled mine out of my TE310, but can't tell ya if it change anything as I never rode it with it in place. I do know, I've owned MANY bikes in the last few years and none have had a screen. The filters are fire retardant anyway, so I'd say it's a safe bet you don't have to worry about a fire hazard. Sure someone can attest otherwise, but I've never seen any signs on the inside of a filter from a back-fire gone wrong. For what it's worth.
 
I pulled mine out, but I will admit, I have seen an XR650 start on fire after the bike blew back and lit up the filter.
 
Thanks for the replies! One more question, do the fuel injected bike have more, less, or the same probability of intake side back fires? It seems since fuel flow is controlled by the ECU/injector there may be a slight chance that they are less prone to actually blowing flame through the intake tract:excuseme:. Any ideas?
 
I've never seen one actually light the filter on fire but I have seen it char the inside of the filter and then suck the burnt foam into the engine leaving a big hole in the air filter and then giving the cylinder a hone job compliments of some Glamis sand.
 
rajobigguy;36116 said:
I've never seen one actually light the filter on fire but I have seen it char the inside of the filter and then suck the burnt foam into the engine leaving a big hole in the air filter and then giving the cylinder a hone job compliments of some Glamis sand.
Click to expand...

This I have witnessed as well. Good point. I leave mine in.
 
I took mine out on every 4 stroke i owned. Thousands of miles without issues but is can happen. Don't clean your air filters with gas and do this. Better yet just don't clean your air filters with gas period. :D
 
Motosportz;36208 said:
I took mine out on every 4 stroke i owned. Thousands of miles without issues but it can happen. Don't clean your air filters with gas and do this. Better yet just don't clean your air filters with gas period. :D
Click to expand...
Same here, screens on my bikes are typically pitched during initial set-up.

I finally stopped cleaning with gas, over a decade ago. Been using No-Toil cleaner/oil last several yrs.
 
Real easy...just dump a little in few inches of water, mix up, swish the filter around a bit and rinse........Cleans filter very well.
When you're done, just toss the water out on the lawn (for anyone concerned about that, it's biodegradable and non-toxic)

Oil (I use spray on, & massage in) has good tackiness to it, waterproof, and traps dust well w/o seeming to restrict air flow like some filter oils seem to do a little.


Plus, ......and I can get it at about any local shop
 
I have to 2nd the No-Toil. Been using it since it came on the market and never had a filter fail as a result of using it. When I'm feeling really lazy, I'll toss them in the wash machine and they come out great. EZ clean up, bio-degradable, low odor, and doesn't destroy filters like some of the harsher cleaners will over time. Product of the year, every year in my book!
 
FYI you can also use Oxy clean in the wash for your filters if you are currently using No-Toil oil,same stuff and much cheaper
 
Here in the wet East I had problems running No-Toil at wet events-degraded the filter oil. Don't use it anymore. What do you use instead of gas for solvent type filter oil?
 
I usually use mineral spirits to clean the oil off the filters then wash the mineral spirits off with warm soapy water, rinse and dry before reoiling and reinstalling.
 
So your not leaving the rubber part of behind?
Mine seemed to stand off the base too high, just wanted to make sure I'm not missing something.
 
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