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View Full Version : 300 ex jetting for the umpteenth time



not2hi
09-01-2002, 06:32 PM
due to a lack of understanding of our Mukini, i put the orig Honda carb back on and installed the Dyno Jet kit per their instructions. I believe that this is a 40 needle (PN dn0140), clip on groove 4, and a 128 main jet (PN dj128), and turned the mixture screw out 3 full turns. (803 ft above sea level).

Its cooler than it was last night, but still way hotter than it was before. Popular opinion was that it was too lean. To richin it up a bit, do i move the clip to groove 5 or play with the mixture screw? The largest main jet that came with the kit was the 128.

FMF recommends a 40-42 pilot 130-135 main. with no airbox lid and a 38 pilot and 128 with lid. mines got 6 1" holes and a 3" hole in the lid.

These terms are really starting to confuse me. Pilot jet, main jet, needle jet, jet needle...ahhhhhhhhhh!

If someone can help this mental case...H-E-L-P-!

mxracer08
09-01-2002, 08:53 PM
to richen the carb w/ the needle, move the clip down, which moves the needle up.