wr450f 2003 jetting

4 replies to this topic
  • lilgillett

Posted April 09, 2014 - 02:26 AM


Need help with jetting

  • lilgillett

Posted April 09, 2014 - 02:32 AM


I am trying to get my bike running right at the moment and I have checked the jets and im not sure what they are meant to be at, main jet 170, pilot jet 48, fuel screw is 1 1/4 turns out, needle is at second from top and attitude is running about 100 to 500 feet altitude?
What does anyone suggest ?

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  • Krannie McKranface

Posted April 09, 2014 - 04:56 AM


Why do you think you need to change your jetting

  • lilgillett

Posted April 09, 2014 - 12:48 PM


It is spluttering at half throttle really bad but clears up if you holt it flat, just trying to see what everyone else runs to make sure its not my jetting.

  • Krannie McKranface

Posted April 09, 2014 - 12:52 PM


Jetting should not need to be changed over time.

If it ever ran well in the past, it's not the jetting, it's just maintenance.




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