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 The previous version was outdated and no longer supported.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

Jetting at sea level

F

flynn_

Husqvarna
C Class
Hello guys, I live on the coast so at sea level. As a result, my jetting settings can probably go a fair bit richer than standard.

I have already adjusted the needle clip by one position richer and now it feels stronger up to 3/4 throttle but then at full throttle it feel flat, presumably because the main jet is now the bottleneck.

It is currently a 185, I was thinking I could go to a 195 and even if it is a bit rich for the moment I will be straight throughing the exhaust pipes soon.
 
Also the lever from the accelerator pump came out of the top hat on the carb so I had to remove it. Now when I open the throttle suddenly (as you would to do a wheelie) there is a delayed response. Can this be compensated for with jetting or do I have to order a new top hat (expensive)?
 
Well I have increased the needle jet one jet richer and it pulls harder up to 3/4 throttle but on open throttle it feels flat afterwards so I figure I could increase the main jet size. Current is a 185, do you think I could go to a 195? Or should I just go to 190?
 
I had my '07 610 dynoed and the guy (very sharp and reputable bike tuner) said that I should go to a 195 from a 175 that was in there. I'm at about 500' of elevation. Mine has a Leo Vince pipe so it certainly flows better. I also upped my pilot to a 45, my fuel needle is at two turns out, and I've wired my accelerator pump and timed it perfectly as well. Everything else on the carb is stock.

That being said I could not tell you if it's running better or not. I had it dynoed with the 195 main and now I have a carb problem that I need to solve as I'm running leaner on the main jet after going from a 175 to a 195. Other parts of the power curve look great, except when on the main. Could be a badly machined jet and I'll try another 195 and open up the carb to see if anything else is amiss.
 
Just out of interest what did it make on the dyno? I am going to get my 2001 dyno'ed and will post the results up here for anyone interested.

I have changed the needle position back to 2nd from bottom for the purposes of the dyno.
 
I really don't remember, but was told that I'm leaving about 5+ hp on the table due to how lean it is based on what the tuner has seen from other 610's on that dyno. I have the graph at home. If I can remember I'll post it tonight.
 
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