How do you change a fuel pump on Kawasaki ER6F 2006
Not much to add to question.
Knowing what tools are necessary would be good too.
Here’s a link to the service manual for your bike.
It has all the information about how to remove the fuel pump and what tools are necessary and a whole lot more.
Fuel pump removal procedure starts on p.181, special tools are on p.112-113
Hopefully this is of some help.