1 reply to this topic
  • dangler

Posted May 02, 2002 - 03:39 PM


I know this is getting old but I read alot of the posts about jetting and think I am more confused now then ever. I have a '01 WR426. It is stock except I removed the airbox lid, ground down the throttle stop, cut the grey wire, & removed the exhaust tip insert. After this "uncorking" wouldn't it be logical to expect to need a rejet. I was think about going up one jet size on the main and pilot. (that would be a 168 main & 45 Pilot) Is this OK? What do the experts recommend? What about the pilot screw? It runs ok as it is with some minor popping on decel...need advice!!! Thanks.

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Posted May 02, 2002 - 04:05 PM


If it runs good with only some minor popping on Decel and your happy with the power, you should only turn the fuel screw out 1/4 turn at a time until the popping quits. The baseline is 1 1/4 if you have to go out more than two full turns then a pilot increase would be recommended. Keep it simple and make changes slowly and as a result of a problem only. Major jetting changes should be the result of major changes on the bike...IE..Aftermarket Header/Exhaust change, Major Altitude changes.

Good Luck...

Also do a search on: Jetting Q's

Valueable info...

Bonzai :)


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