Today I replace fuel filter, it is like SuzukiDon sed but I must add some things...
First take out el.fuse for fuel pump(15A from fuse comp. under the hood), start car, end let it burn all fuel. Then crank for 5-10sek more. Now fuel line has no pressure
About fast connectors, on one side is flat surface which has to pop out, and on the other there are two holes from which you pop-out it with small flat screw driver. After that lockin part is out, you just pull off fuel line from filter. Be awere that there is petrol in filter which will go out if you turn it.
Good luck!
Just to add...
Service interval for fuel filter is 45oookm(3rd service). On first service they replace me fuel filter becouse our petrol is bad(service statemant), so after 30000 I shouldnt change it, but I did and problem with engine stoped.
Problem was, during driveing sometimes it can be heard like one cyl. didnt fire or didnt get fuel, but when u press gas pedal it dont stoll, like with cloged filter.
4000km before I add injector cleaner in the gas tank. It might be cleaning tank and filling filter, who know...I will change this filter before 30000km...45K my ass...