EXSailor
02-04-2006, 07:43 AM
ok guys,heres what I did....
just installed a JE 10.8:1 87mm piston and put a 170 K&N main jet in, but I need clarification on the fuel air mixture screw, is that the small screw on the outside of the bottom of the carb? If so, then I turned it allthe way in, and turned it out 3 1/2 turns. the concensus of every post is 170 main, fuel air screw 3 1/2, and 42 needle in 4th position. I don't know if I have a 42 needle, and how do i tell if it's the fourth position. I started it up yesterday and started the break in on it, it seemed to run just fine, so I rode it around for about 5 minutes, moving through the gears at no more that 1/2 to 3/4 throttle, let it cool down completely, and did the same thing a couple more times. what I can't figure outis, myneighbor has a stock kfx400, and his still seems to hav more torque and power. I can only attribute that to me not jetting it right, any ideas?
just installed a JE 10.8:1 87mm piston and put a 170 K&N main jet in, but I need clarification on the fuel air mixture screw, is that the small screw on the outside of the bottom of the carb? If so, then I turned it allthe way in, and turned it out 3 1/2 turns. the concensus of every post is 170 main, fuel air screw 3 1/2, and 42 needle in 4th position. I don't know if I have a 42 needle, and how do i tell if it's the fourth position. I started it up yesterday and started the break in on it, it seemed to run just fine, so I rode it around for about 5 minutes, moving through the gears at no more that 1/2 to 3/4 throttle, let it cool down completely, and did the same thing a couple more times. what I can't figure outis, myneighbor has a stock kfx400, and his still seems to hav more torque and power. I can only attribute that to me not jetting it right, any ideas?