we are working on a 2002 fx 470 at the moment .trying to fine tune its starting/running ect.and i was trying to determine how it was jetted compared to stock as the mixture screw on this bike seemed to have no affect on how the bike runs.could not tell what # needle was in it as the markings had worn out .the needle clip was full rich positioned and that made no sense to me. the mainjet was a 190.any way i looked in the 2002 owners manual and the it says the stock needle is a k 51 in the 3rd position and the main jet is a 190 and the pilot jet is a 33.i also took a look in the 2001/2002 parts manual .it shows the needle to be a k35 in the 3rd position and the pilot a 33 and the mainjet a 185.now the bike has a spark arrestor in the muffler as it is a fx as the fc model does not come with a sparky.also on a different note,does a fe 501 of the same vintage come with the same needle and similar jetting?you would think i would know this but it is hard to remember everything and when the information that we have avail is not consistently the same it really becomes a challenge.dan.