In the picture on the left with the red elbow, you can just take a flat blade screw driver and stick in in the clamp and pry the clamp open and slide the fuel line off the fitting. You just use a sidecutter to clamp it back on.
On the right side you just depress the tab on the bottom of the fuel line fitting and the clip will come off the barbed inlet. To re-install you just push it on.
On the four stroke you have to unhook the battery.
Other than that, it will come right off. You can leave the pump in the tank.