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Fuel screw adjustment after re-jet/3X3

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Just got done with the 3x3/rejet and FMF install for my 400s.

145 MJ

25 PJ

4TH Clip

Fuel screw adjustment doesnt seem right, with the bike warm and idling I can screw it all the way in without the bike stumbling and or dying, backing out three turns does not seem to have an effect however if I keep turning the screw out it, eventually the bike starts to run rough.

Don't want to run the bike too rich or too lean. Not sure how to proceed ?

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Set it on 2.5 and ride it. If you don't have any problems, then your OK.

Did you install the washers on the extended fuel screw?

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Installed the washers and o-ring on the fuel screw. So 2.5 turns out from all the way in ?

S

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That should do it.

It runs OK otherwise? pulls all the way to the limiter, even, etc... ?

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Just got done with the 3x3/rejet and FMF install for my 400s.

145 MJ

25 PJ

4TH Clip

Fuel screw adjustment doesnt seem right, with the bike warm and idling I can screw it all the way in without the bike stumbling and or dying, backing out three turns does not seem to have an effect however if I keep turning the screw out it, eventually the bike starts to run rough.

Don't want to run the bike too rich or too lean. Not sure how to proceed ?

My SM does the same, and from the replies I received to my same query, I am not too concerned about it. Small changes do have an effect on low throttle behaviour and how much choke you need to use on a cold morning.

I don't believe a lean pilot circuit will cause issues in the same way a lean main jet would.

Cheers

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