Jets?

[FBRacing76]

Hello, Could someone tell me what kind of jets my 400ex would use it has a stock Kehein Carb it now has a round headed jet that you screw in with a flat head screw driver. I can not seem to find them any where is that the factory style jet or would it be alright to run a big hex jet? Please help me! Thanks Ethan

[JOEX]

The stock pilot jet (slow jet) is round with a slot for a screwdriver. The stock main jet is hex shaped. I'm not sure about the aftermarket jet kits but I thought they were the same. Some of the kits use an adapter for the main jet though.

The main and pilot jets are right next to each other if you remove the carb bowl but if you just remove the cap on the bottom of the carb only the main jet is accessible.