2010 yz450 idle adjust screw

5 replies to this topic
  • mwmx54

Posted May 13, 2012 - 11:15 PM


my idle adjust cold start thing does not seem to work, i pull it out and it should idle up a bit, but the idle doesn't change at all, i also adjust it all the way in, and back out and still the rpms don't change at all, my buddy has a 2011 kx450 and his seems to change he rpms a lot with just the slightest adjustment. and correct me if I'm wrong, but doesn't it have to be pulled out to adjust it? either way it doesn't make a difference with my bike. any help is appreciated.

  • mwmx54

Posted June 16, 2012 - 11:22 AM


nothin huh...

  • grayracer513

Posted June 17, 2012 - 09:43 AM


... doesn't it have to be pulled out to adjust it?

No, idle speed adjustment should be made with the knob in.

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  • BBrown626

Posted June 17, 2012 - 07:31 PM


Yep, what he said.

  • mwmx54

Posted July 04, 2012 - 11:06 PM


yeah, the thing is there is no change in rpm's when its in, out, or when i twist it, in or out, the rpms don't change at all and it idles kinda low, i want to turn it up a bit.

  • upnorthbacon

Posted July 09, 2012 - 03:44 PM


Mine is about 1800 rpms and it feels like there's almost detents when turning it. If I move it about 1/4 turn and I immediately hear the rpms raising or lowering.

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