Butane gas filled cylinder, net weight 227g.

Gas cylinder replacement: Replace the gas cylinder in a well-ventilated area with no sources of ignition. Close the gas valve/valve on the gas appliance. Remove the gas cylinder from the appliance. Replace the connection seal if the seal is damaged or missing. Align the notch on the gas cylinder collar with the notch/pointer/lock on the appliance. Insert the gas cylinder into the appliance, taking care not to use excessive force.