Red Bolt Posted August 16, 2009 Report Share Posted August 16, 2009 I just threw on some fmf fattys on my stock 02 She. I went to a local shop and told them I needed the proper jets for my app, the guy looked up the jets on the fmf website and gave me 260 mains and 30 pilots, Today I went ahead an tore everything down and cleaned an installed everything, now bike seems to have low end hesitation like its needs air or fuel?? Im gonna check if the carbs are sync'd tomorow and for leaks.... So now I went to the FMF site to see if I could find what they gave me, an I come to find they gave me the jetting for a stock bike from wht I can see, and there jetting page doesnt seem to work. http://www.fmfracing.com/TechSupport/JettingCenter So my question is, could someone tell me what jets/pilots I should be running for a stock bike with fattys? I did put some holes ontop of the air box,and it does have the stock air filter. Thank Fellas! Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted August 16, 2009 Report Share Posted August 16, 2009 You need the 27.5 pilots. Try opening up the air mixture screws on each carb, 1/4 turn at a time, and see if you can get rid of the rich condition, that's causing it to run bad. Make sure both air mixture screws are adjusted the same. Quote Link to comment Share on other sites More sharing options...
Red Bolt Posted August 17, 2009 Author Report Share Posted August 17, 2009 You need the 27.5 pilots. Try opening up the air mixture screws on each carb, 1/4 turn at a time, and see if you can get rid of the rich condition, that's causing it to run bad. Make sure both air mixture screws are adjusted the same. KOOL! Thanks for the help Ill be doing it during the week.... Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted August 17, 2009 Report Share Posted August 17, 2009 I should have mentioned this earlier, but when adjusting the air mixture screws, make sure the motor is running, adjust both the same, and give the motor 20-30 seconds to adjust to the changes. If 1/4 of a turn helps, which it should, but it's still not quite right, give it another 1/4 of a turn, and so on. If you get over 2.5 turns open, then you need the 27.5 pilots. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted August 17, 2009 Report Share Posted August 17, 2009 also, make all adjustments for operating temp, not on a cold running engine. do a plug chop to verify the mains, first. Quote Link to comment Share on other sites More sharing options...
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