In the clymer book it says that the factory main jet is 240 and the needle clip is in the third grove and the needle jet is 6pf63. I pulled mine out and the main jet was a 270? Was someone in there before I was?? It had the factory pipe on. The needle clip was second from the top. I put Fmf Phatty on it and went up two steps on the main and down one on the clip.. Trying to figure out if I should restart the jet process. It does have more power and runs fine.

 

Ya someone allready changed it. My 91 had a 280 main with a FMF pipe but ran just a hair rich so I went to a 270.

 

What about your needle jet?? Thanks for info.

 

Dont know cuase Ive not taken the carb apart, just pulled the main jet from the bottom. On my past quads/bikes I never moved the needle clip, just changed the main jet. I think the middle position is stock for the clip.