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 The previous version was outdated and no longer supported.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

Would O2sensor removal solve this?

elpedro

elpedro

Husqvarna
AA Class
Hi,
sorry for bothering with lambda/o2 sensor removal again, I've read many topics about it here, but never got the answer to my problem. Just recently bought a 2011 SM630 with 2000k on the clock and it is bone stock. I love the bike so far, has plenty of power but the thing is that it really struggles to keep constant revs. All the previous topics regarding lambda removal concerned low power in low and mid range revs, but my bike has plenty of power everywhere, it rips. But riding constantly just feels terrible, when riding around neighborhood I feel like the bike wants to shake me off and the ride sucks.
Would o2 removal solve this? I don't want to mess with jetting or pipes.
Thanks
 
In stalling the PU and removing the O2 sensor will fix a lot of these problem. You won't need to mess with jetting because your bike has EFI. You might want to look into the JD tuner. These seem to be a must have for the 630
 
The PU kit would help but also make sure chain tension is correct and that you use good quality, high octane fuel. The standard unleaded fuel we have in the UK is very poor, a 630 runs much better on our 'super' unleaded (98/99 octane).

Dave
 
Get the PU kit, install it, and adjust the idle back down to 1650 RPM. That will solve most of your problems for the least amount of money.

You can't just remove the O2 sensor. You have to put a resistor in its place (which comes with the power-up parts) to change the ECU mapping and richen up the fuel.
 
Thanks for ideas. I'll try higher octane gas next time. About the chain tension: I think the problems are not caused by incorrect chain tension, but since it is my first bike with such long spring travel, how do you measure your chain tension and how loose is yours? At first I thought I was gonna lose the chain how loose it felt, but its probably correct this way..
 
I just load up my suspension the best I can and eyeball it. The instructions in the owner's and shop manuals for checking chain tension are kind of vague. What you want is just a little bit of slack in the chain when the swingarm is pretty much level with the ground. That's the point where the distance between the front & rear sprockets is the greatest.

Compared to street bikes, the chains are pretty sloppy loose. That's why you have all those guides and rollers to keep the chain in place.
 
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