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 The previous version was outdated and no longer supported.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

2010 Husky TXC 450 glowing header when idling.

M

moosesp

Husqvarna
AA Class
Hello everyone, I just did a search and didn't find a conclusive answer to this question. I just picked up a left over brand new 2010 TXC 450. I just brought it home from the dealer and was running it at an idle when I noticed the headers got red hot. I shut it down and re-started it with the same result. I know it obviously is a few years old but its brand new.

I don't know if the dealer cleaned the carb or maybe it has a partially plugged pilot jet causing a lean condition. Please help if anyone has had the same issue.

Thank You,
 
moosesp said:
Hello everyone, I just did a search and didn't find a conclusive answer to this question. I just picked up a left over brand new 2010 TXC 450. I just brought it home from the dealer and was running it at an idle when I noticed the headers got red hot. I shut it down and re-started it with the same result. I know it obviously is a few years old but its brand new.

I don't know if the dealer cleaned the carb or maybe it has a partially plugged pilot jet causing a lean condition. Please help if anyone has had the same issue.

Thank You,
Click to expand...

Since my TE511 was my first performance 4 stroke, I asked the same question when I first got mine last year. A few guys were cool enough to respond and said that it was normal. Change in fuel mixture (JD tuner) and aftermarket slip-on pipe didn't really make a difference.
 
If you're going to clean out the carb... Buy and install a JD jet kit.
At a minimum install #43 pilot jet, #35 leak jet and do the AP mod (small ORing on screw). The JD kit has all this and how to instructions.
This should cure any off idle bog or hesitation.
Also get an adjustable fuel screw.
If you want to smooth out the power down low even more, install G2 throttle cam.
 
Thanks for the info! I had a chance to take the carb apart today and I found that the pilot jet was plugged. Cleaned everything very well and put it back together. The bike now purrs like a kitten and no more glowing headers.
 
Boogie said:
If you're going to clean out the carb... Buy and install a JD jet kit.
At a minimum install #43 pilot jet, #35 leak jet and do the AP mod (small ORing on screw). The JD kit has all this and how to instructions.
This should cure any off idle bog or hesitation.
Also get an adjustable fuel screw.
If you want to smooth out the power down low even more, install G2 throttle cam.
Click to expand...
For the sake of completeness I want to state my personal opinion - #35 is a *huge* leak jet. I've used everything from a 'blank' leak jet (max squirt) to a #70 (almost no squirt)... and personally prefer at least a #45, and #55 or #65 seem more optimal.

Trouble with too much squirt manifests itself on warm/hot days when going up bumpy steep hills - too much squirt and my bike stalls because of all the throttle movements.

More info about leak jets can be found here:
http://www.cafehusky.com/threads/in-search-of-snap…-is-this-stuff-useful.6411/
 
Thanks for posting that link Coffee, excellent info there. I read that thread thoroughly before touching my carb.
I chose the #35 as it was included in the JD kit and I read elsewhere Les Tinius used a #35 leak jet on his TXC510, so was specific to my bike.

My bike had a plug standard (and #45 pilot) and the previous owner put 2 thick orings on the AP screw. It was a nightmare!
It would stall at the worst times or cough/hesitate then wheelie when blipping the throttle... It was "interesting" to control over obstacles (rocks, logs etc.)
 
Boogie said:
My bike had a plug standard (and #45 pilot) and the previous owner put 2 thick orings on the AP screw. It was a nightmare!
It would stall at the worst times or cough/hesitate then wheelie when blipping the throttle... It was "interesting" to control over obstacles (rocks, logs etc.)
Click to expand...
:lol:

For the record, there is absolute nothing wrong with a #35 leak jet, I just do not find that optimal. I've jetted at least a dozen 2006/7 Te250/450/510s, so my opinion is not just about my 2006 TE250.

I just thought I should say something, cause the typical internet user searches (i.e. googles) for a certain topic - and if 2 results show up in the search results that match, they assume that 'must be true'
 
Glowing head pipe at idle indicates little lean on the Pilot circuit, Pilot jet, or fuel mix screw not set properly.
If it glowed red at WOT then it's lean on the main.
Just start it up at night when it glows just give it a little more throttle and it darkens back up.
Just a little lean no big.
This doesn't mean anything is wrong with the bike.
Later George
 
Thank you everyone for all the info! I will be exploring the leak jet a little more and playing a bit with the pilot circuit as well. Coffee or Boogie can you shed a little more light on the leak jet choices. I see that coffee seems to prefer a little bigger leak jet for less fuel delivery during the AP stroke but at what point is the leak jet to big. What negative if any is there. I was just riding last weekend in very tight technical terrain in warmer weather with lots of stalling when on the throttle from very low speed. This would indicate to me that if fact a leak jet would cure this but I'm on the fence as to what size? Also I know my pilot circuit is too rich and Boogie mentioned a #43 pilot jet??? I think Keihins pilot jet is a #42 though. Will this size be too lean if I decide to ride in 10 Degree C weather?
 
Hey moose, check info on your bikes carb set up here: http://www.cafehusky.com/threads/2010-tc-450-jetting.35462/#post-341529

I had a G2 throttle system with the slowest pull (#400) cam installed on the 510 so maybe this is why I found the #35 leak jet to work well. Ie: slower throttle openings as a result of the G2 #400 cam helped with the problem Coffee states here:
Coffee said:
Trouble with too much squirt manifests itself on warm/hot days when going up bumpy steep hills - too much squirt and my bike stalls because of all the throttle movements.
Click to expand...

SO... If I was you and wanted to chose two leak jets to experiment with: I would buy a #45 and #65
 
You must log in or register to reply here.
Back
Top