1. Unscrew the dust cap - leave the metal screws on the valve all the way screwed in.
2. Attach the pump - use the smaller hole (labelled "P") and lift the locking lever.
3. Pump until the tyre is firm to squeeze - the tyres don't need to be too hard.
5. Move the locking lever on the pump to the down position and remove.
6. Check all the metal screws on the valve are screwed tight and screw the dust cap on.