okay how hard is it to change the alternator oh a cbr f4i... i just found out today that it doesnt charge my battery and doent hold charge. at first i tought it was because i didnt use my bike everyday...

 

Could also be the regulator/rectifier. How have you come to your current conclusion?

 

If you haven;t already... test the charging system:

http://cbrworld.net/forums/thread/140473.aspx

That tutorial will work for your bike

 

damb it could be soo many things i guess ill just check everything

 

oh wow that page has some real good info thanks both of you guys... how much would a alternator or rectifier cost

 

New alternator (stator) will be pricey. New rectifier will run around $100. Get the aftermarket unit if you can, it's a much more reliable piece than the OEM.

Check http://www.ronayers.com for OEM parts

 

alright thanks. i gained alot of info now i kno more yay. lol

 

when did you last replace the battery?

batteries die very quickly on bikes so there is a good chance you might just need a new one

if youre unsure about the condition of the battery, take it out and go to a dealer. They can test it right in front of you and tell you the batteries current health with a portable tester tool

 

i actually just got the bike so i wouldnt know

 

It might just need a charge. Take the battery to autozone and they will test it and charge it for free.

If the bike has been sitting for a month or so the battery likely just drained and needs a recharge.