Hi Ricky, just to check, your bike is a F2 correct, if so I think your way out on the main jet, but your problem I think is your slow jet , what size do you have in for the slow jet, should be 40, here is a diagram to show how the jets and needles affect the rpm range

 

No it's a 90 cbr1000f (hurricane). Sorry I just realized I was in the f2 forums, I just found this thread and it was the only one I found that was even close to the problem I've been having. My manual says for the 90 cbr1000f is 122 for the main jet. I should probably repost this in the hurricane section huh?

 

Hi Ricky , thought it strange jet size, the diagram still works as regards which jet/ needle does what , but try and get Admin to move it to the CBR1000 Hurricane Forum, there's a lot of guy's there who can help. Use the Contact Us in at the bottom of the page

 

Will do thanks for all your help