oil help and jetting

[jbm0121]

i have a 2000 400ex with no air box lid a uni filter and a fmf power core IV slip on.

what should my jets be i live in North carolina bordering the ocean


and im changing my oil and filter how much oil do i need?

[jbm0121]

and also how many turns out on the air.fuel screw

[hornetgod13]

I have similar mods and I have a 158K main jet, 42K Pilot Jet, Needle Clip on Third Slot Down, and Fuel screw 2 1/2 turns out from lightly seated.
Your jetting may differ slightly but that should get you with in one jet size and you may have to tweek the fuel screw in or out and half turn.
Two quarts of oil is required for an oil change. Be certain to drain the oil from the crankcase as well as the oil tank.

[jbm0121]

ok thanks

if anyone else has some info please chip in

unfortunately my 400ex was stolen earlier this week and recovered torn to shreds and beat all to ****

so now im changin oil and all i can to freshen it up and i havent even had it but for 2 weeks

[Honda#4]

What Hornet said would have been my guess too.