Weber Hose and Regulator Replacement, QCC1 manual - page 5

Step 3 (Case 1) Remove hose and regulator assembly from manifold Note:Some older models have the hose threaded directly into the bottom of the manifold (see illustration). If your hose is threaded into the bottom of the manifold, contact Customer Service 1 (800) 446-1071to replace the manifold. Use a wrench to remove the hose and regulator assembly from the brass elbow on the manifold (turn counterclockwise). Some models may have a FlameCheck™ System attached to the manifold.
Removal of hose and regulator,
if your grill has the
Flamecheck™Safety System