Re: 98 CBR F3 issues
Faulty R/R unit is a common charging problem as they over heat & burn out but can also fry the battery. Don't replace with the OEM part, get the pattern part with cooling fins.
If you have had the fuel tank off make sure you have not trapped / pinched / kinked or blocked the rubber breather pipe, if you have then this will create a vacuum causing fuel starvation. There are 2 tubes from the tank one is the breather the other is the over flow tube check both are ok all the way down from the tank.