FZS brake service

[PieEater]

........Remove pistons on bike first using the bikes hydraulics. Pump brakes to push pistons nearly all the way out, usually one or two will come out quicker than the others, hold these ones back say with a piece of wood and pump brake to push the others out.
When one or two have come out you can pull the others out. Dry first and try with your fingers. Don't use anything that can damage or mark the pistons, use piston pliers.........

Just to let clarify the above - there is only room to extract the pistons from one side of the calipers using the hydraulics to push them out, the pistons on the other side have to be held right back to allow the pistons you are trying to extract to come all the way out, hence why you need the piston pliers. You'll also need the piston pliers for the other caliper as when you come to do this you won't have any hydraulics.