Bleeding Rear Brakes

[CruiserNewb]

Im overdue on changing out my brake and clutch fluid so Im going to order Speed Bleeders to install to make it easier for all future changes. I have a question regarding the rear caliper. I have never bled anything before with 2 valves. The service manual doesnt make it too clear. Do I need to do them in any particular order? Do I do one first until I see new fluid and no bubbles and then the same with the next one? Doing only one doesnt get out all the old fluid correct? Why are there 2 as opposed to 1 anyway?

[bscrive]

You need to connect the speed bleeder to the bottom bleeder screw first.  Us it to replace the fluid in the line.  When the fluid starts coming out clear, then you can close that one and move to the top one and do the same.  Make sure that you don't let the reservoir go too low in fluid, or you looking at a longer job to get the air out.  Sounds straight forward, but I have almost done this on a few occasions.