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Keihin PWK Needle Chart
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05-25-2021, 11:01 PM
Jim Cook
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Join Date: Sep 2006
Location: Smackover, Arkansas (AR)
Posts: 687
While you have the slide out, turn it upside down and see what number is on it. The earlier 250 & 300s came with a #7 (7mm cutaway on the bottom). The cutaway of the slide regulates the carburetor's air flow at idle.
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Jim Cook
Smackover Racing
Team LAGNAF
'11 Gas Gas EC250 (primary ride)
'06 Gas Gas DE300
2004 Gas Gas TXT300 Pro
'94 Husaberg FE350
'86 Yamaha IT200
'86 Honda TRL200 Reflex
'04 KTM 525EXC (soon to be dual sported)
Several others, including project bikes, Deb's bike, and a fleet of grandkids' bikes
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