Unzip the outer sleeve of the AirBeam® on the inside of the flysheet
Remove the AirBeam® from the internal zipped sleeve.
Cut the cable tie that holds the zips together (ties stop accidental opening)
Remove the inner tube from its protective outer
Place the new inner tube inside the protective outer. Align valve with the opening in the protective outer. Zip closed, taking care not to catch the inner tube. Reconnect the zips together with the cable tie provided, to prevent accidental opening when the AirBeam® is inflated
Re-inflate AirBeam® to the correct PSI
Re-insert the AirBeam® into the zipped sleeve on the tent flysheet