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How to adjust the fuel screws??

Started by GSF500, March 28, 2013, 01:41:16 PM

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GSF500

Has anyone installed the longer fuel mixing screws? How do you adjust them for best performance after rejetting? If I turn the screws in 1 turn does that reduce the fuel flow and 1 turn out increase flow? What does screw turning direction produce? Mine are currently 2.5 turns out :2guns:

bombsquad83

Turning the screws out increases fuel in the mixture (richens).  2.5 to 3.5 turns out is usually the sweet spot.

adidasguy

What he said. The longer screws work like regular except you can use your fingers instead of needing a screw driver.
FactoryPro makes ones for the newer carbs.
They made some for me for the older carbs (but no one here wants them so I have 7 extra sets on the bench  :sad: )

GSF500

Thanks for the fast response.....  :cheers:   

oldmech

Quote from: adidasguy on March 28, 2013, 02:50:38 PM
What he said. The longer screws work like regular except you can use your fingers instead of needing a screw driver.
FactoryPro makes ones for the newer carbs.
They made some for me for the older carbs (but no one here wants them so I have 7 extra sets on the bench  :sad: )


if a 2000 year model falls in the "older" category i will take aset off your hands.

weedahoe

Mine is an 07 and I have the lower screws. I turned mine in to seat them, then marked them with a black marker so when I turned them out I would know how much
2007
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