1/ Stand on flat and stable ground.
2/ Screw the hose onto the pump.
3/ Connect the hose to the SUP (valve raised).
4/ Close the cap on the body of the pump, its double action operation and delivers 3.6 L with each up and down stroke.
5/ Inflate the stand-up paddle board until it takes shape.
6/ As soon as pumping becomes difficult, open the cap, the pump then operates in single action (1.8 L with each down stroke).
7/ Inflate to the SUP's recommended pressure.