NEED HELP: What's the stock jetting for the 400EX?

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04-27-2000, 10:44 PM

wcy2k400ex

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Anyone that knows for sure what the stock jetting for the 2000 400EX is, please reply. I need to know it. Thanks a lot in advance.

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04-27-2000, 11:51 PM

Dill

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I know the main is a 148...I'm curious about pilot jet size tho..

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04-28-2000, 01:17 AM

NVR2L8

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My pilot jet was a 38, and the main was a 148. I changed the pilot to a 40...much better cold starting and idling!

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