Greetings to all! Excuse for my language! At me CBR 600 F2! Since 7000 motorcycle pulls also turns doesn't type! On neutral all is excellent! On the first and second too it is appreciable nothing and after 3 and to 6 it pulls! Filter K&N.Karbjuratory V40A.dvigatel pc25E.Main jet - 128! All has tried I do not know what already to do in what the reason! Help please!

 

you might try a different translator, i don't think your message is coming across clearly.

 

I think you are saying, the bike doesn't have power until 7000 rpm under load.
That without a load (neutral) that it revs up fine. That 3-6000 rpm is a dead spot
in the power-band. You are using a K&N air filter and running .128 main jets.

If all of that is correct, check for vacume and/or exhaust leaks. Also, try Seafoam
in the gas tank. Clean and synchronize the carberators if you haven't already.

Good luck, Ern