Instructions needed on removing Master cylinder reservoir

On a reservoir such as yours it just pulls out. The seals for the reservoir are pretty thick. You simply pull up on the reservoir and if need be pry gently between the master cylinder and the reservoir to pop it up.

Be sure to remove as much of the fluid as possible before trying to pull it out, it will eat paint if you spill it and wear safety shield/glasses, brake fluid in the mouth or eyes is not a good thing.