MS QUICK Manuel De L'utilisateur page 17

Assembly instructions
To adjust and secure the harness
Push the buckle prongs in to the buckle housing
until they snap into position. Adjust sliders to ensure a snug fit for your child.
After making adjustments to the seat always re adjust the
harness. Release the harness by pressing the button on the buckle.
To use the brakes
To engage the brakes, push the pedals downwards with your feet. Lift the
pedals up to release the brakes.