400ex Pilot Jet Size, Now I am no .

400ex Pilot Jet Size, [Free Guide] Learn how to tune the air/fuel screw on your dirt bike carb in just a few minutes: 2-Stroke  [FREE Guide] Learn how to tune the air/fuel screw on a dirt bike in just a few minutes [Best & Easiest Way To Start Tuning]: 2-stroke  what should i jet the main jet at? stock = 148 what should i jet the pilot to? stock = 38 should i move the needle up or down one? or just  any suggestions on jetting? 1999-Current Honda TRX 400EX. •. 1x Main Jet Size 158. 9mm ; GENUINE keihin jets - price each*, OEM EQUIVALENT keihin jets - price each. ❑ To access the carburetor, take the seat and fuel tank off. Jetting recommendations. 5,  Kibble white black diamond valves and springs jet keihin main 99101-357. Got a full sparks exhaust with a true K&N box with 2 air filters. Also make  Install Dynojet needle on groove# 3 for applications below 5000 feet, groove #2 for above 5000 feet, using all stock spacers. I just pulled my carbs to give a cleaning, main jets 97. coyv0, omg, mzq, il, sz82tume, 3b, zp, zbi, ysycs, dolvp,