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View Full Version : Stock jetting for 400ex



bullitz400
01-12-2005, 08:01 PM
Do any of you know what the stock jetting is on a 400ex? What is the air/fuel screw turned at? Main jet? ETC.....My friend just got his 400ex. Completely stock but when you hit the gas it bogs. Just cleaned the carb out completely and still bogs. I'm guessing its the air/fuel screw. Do any of you know the stock jetting from Honda? It's an 02 400ex. thanks

maxamillion
01-12-2005, 08:18 PM
148 main, 38 pilot, i dont know what the screw is set at

nosliw
01-12-2005, 08:31 PM
2 1/2 turns out from lightly seated i think....

cals400ex
01-12-2005, 10:16 PM
stock needle: B44A with needle clip in the middle position (3rd)

stock fuel screw position is 2.25 turns out from lightly seated.