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View Full Version : Another 300ex jetting question.



Stock98EX
06-27-2002, 01:03 PM
Ok, I got my 300EX jetted Sat without a hitch. I put in the 124 DynoJet. It started right up, ran better. So I figured, since it was still running good, I will take that jet out and put in the next higher to see if it runs rough or not. Becasue it was still running a little hot. Which I was told, would be a lean condition. So I put in the 128. It didnt start near as easy. But man, that thing ran like a stripped ***** ape at WOT. So, I messed with the mixture screw. No matter how far in or out I turn it, I cant get it to idle. Any ideas? Also, how do you get to that screw while its on the bike? I dont have a screwdriver or small enough hand to get in there. Any help appreciated.

honda 400ex 69
06-27-2002, 01:10 PM
since u are a few steps ahead of me what is the main jet?

the top or bottom one cause i took one of those out but i dont know if its main or pilot i got to it from that bottom cap thing then un screwed it


so did i take out the main?

2K1 300EX
08-08-2002, 07:35 PM
Honda400ex>>>the main jet is the one you see when you take the carb bowl off(the bottom thignthat you unscrew).