The gas leak test

Soapy water on every joint

Weber's leak check (the manual, US manual): after assembly, every time you fit a cylinder, after storage, after moving the grill (Weber UK), and once a year. Never use a flame to look for a leak.

1. Work outdoors with no flames or smoking near, and turn every knob off.
2. Mix 20 % washing-up liquid with 80 % water in a spray bottle, or use a leak-detector spray.
3. Open the cylinder valve slowly (UK clip-on: lift its lever). Do not light the grill.
4. Wet 3 joints: regulator to cylinder, hose to bulkhead, bulkhead to gas line. Growing bubbles mean a leak.
5. Bubbles: turn the gas off. At the cylinder valve, return the cylinder. At the regulator, do not tighten it with gas on: contact Weber. At a fitting, tighten it with a spanner, gas off, and test again.
6. No bubbles: gas off, then rinse the joints with water. Soap can corrode them.