Wildcat Sport/Trail Water Pump Tear Down

I quick video showing some basic steps to disassemble and repair a water pump on Wildcat Sport and Trail engines.

[@irvinmeachum531]

In order for me to get the magneto cover off, do I have to take off the header pipe or will it come off without having to take it off? Also, what is that center Allen bolt on the magneto cover? Do I have to take that off as well?