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 The previous version was outdated and no longer supported.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

SM 610 Back Firing

larry belli

larry belli

Husqvarna
A Class
I got my 610 yesterday...it's back firing and the valves are tapping. It runs and has power, but I don't want to do any damage. Any suggestions?
 
larry belli said:
I got my 610 yesterday...it's back firing and the valves are tapping. It runs and has power, but I don't want to do any damage. Any suggestions?
Click to expand...

backfiring on decel, or just in general? On decel in my experience has always been one of to things. (small cracked ext upstream from the muffler, or running a lean fuel mixture.

Valves could be just out of spec.
 
Don't know how much experience you have with the 610 motors, but they tend to be naturally noisy...are you sure what you're hearing is valves?
I thought my motor was falling apart when I first fired it up brand new at the dealership :eek: 11,000+ miles later I don't even notice it anymore :)
 
The valve train is pretty noisy on these bikes. You get used to it. Backfiring on deceleration and an aftermarket pipe suggests you're running lean. Has the ECU been tuned since installing the pipe?
 
Thx WoodChick & jtemple. I feel better knowing that these bike sound noisy because mine sure does. My Triumph (3 cylinder)runs smoothly, so maybe I'm just hearing the contrast.

Does the carburator have an ECU like the FI? All the work was done by Fast By Ferracci. I think they would have done what is nessesary to unclog the exhaust. I will try to find some info.

Thx again.
 
WoodsChick said:
Don't know how much experience you have with the 610 motors, but they tend to be naturally noisy...are you sure what you're hearing is valves?
I thought my motor was falling apart when I first fired it up brand new at the dealership :eek: 11,000+ miles later I don't even notice it anymore :)
Click to expand...

Hey Chick...... how are things????? and what's happening with the new 06 610????? Need to see some pictures of it going down the trail......
 
Stroker Ace said:
Hey Chick...... how are things????? and what's happening with the new 06 610????? Need to see some pictures of it going down the trail......
Click to expand...

Things are good...if a bit hectic. The TE motor is out (so easy!) and is resting comfortably on our motor guy's work bench. We should know more soon. It's about #23 on the priority list right now, though. Eric's dropping the fuel tank on the Pleasure Palace Deluxe Camper Van Extraordinaire tomorrow...if he can get to it through all that RV stuff...and replacing the $500 fuel pump, his 426 motor is also taking up valuable space on the aforementioned motor guy's work bench, my MR2 clutch finally died so we just push it from spot to spot out in front of the house, his WR250 needs new wheel bearings after less than 800 miles, and my 450 has a mystery oil leak. But, hey! My 610, 144 and SV650 are running like champs :thumbsup:
 
WoodsChick said:
Things are good...if a bit hectic. The TE motor is out (so easy!) and is resting comfortably on our motor guy's work bench. We should know more soon. It's about #23 on the priority list right now, though. Eric's dropping the fuel tank on the Pleasure Palace Deluxe Camper Van Extraordinaire tomorrow...if he can get to it through all that RV stuff...and replacing the $500 fuel pump, his 426 motor is also taking up valuable space on the aforementioned motor guy's work bench, my MR2 clutch finally died so we just push it from spot to spot out in front of the house, his WR250 needs new wheel bearings after less than 800 miles, and my 450 has a mystery oil leak. But, hey! My 610, 144 and SV650 are running like champs :thumbsup:
Click to expand...

Alllllrightttyyyyy then....... keep up the good work......
 
I turned the carb mixture screw clockwise just a little, the idle went up, re-adjusted the idle and the back-firing quit. It's running much better.
 
larry belli said:
I turned the carb mixture screw clockwise just a little, the idle went up, re-adjusted the idle and the back-firing quit. It's running much better.
Click to expand...

Good to hear it! Make sure your exhaust flange bolts are tight, too. They tend to loosen up on the 610. Alot of times the clicking sound will sound like valves tapping but it's an exhaust leak.
 
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