winter jetting

1 reply to this topic
  • drew23

Posted December 14, 2008 - 12:12 PM


i have a 08yz 450f in wisconsin, and am looking for jetting #'s for the winter/ice season. any advice would be great

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  • grayracer513

Posted December 14, 2008 - 02:33 PM


Rule of thumb: Increase your jet size by 2% for each 15 degree (F) drop in temp, both pilot and main. Example: jet at 70 was 165, jet at 25 should be roughly 1.06 of that, or 175.

It will help starting to also bump the starter jet up some.

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