Thr information here was verry helpful. I had a problem removing the fuel lines. No mater how hard i squeezed the tabs the lines would not come loose. When the white side finally crushed i removed it. It turns out thatthe lines are installed into a push lock fitting.
The plastic collar with the tabs could not release it to remove the line.
After the collar crushed i removed it and pushed the lock ring down with a flat screwdriver the line came out easily.
I could not get the tabs to release the line fitting on the red side either so i poped the red collar off and released the second line the same way.