Gas cookers hook up to propane cylinders for fuel to prepare food outdoors. Most cookers are built on a stand with a single burner to heat boiling water, such as for a lobster pot, or oil for a deep fryer. The appliance connects to the gas tank in a few minutes with a regulator and hose, typically supplied with the cooker. As with any gas appliance, checking for leaks is a vital safety step before operating a cooker.
Close the valve knob on the propane tank and the burner knob on the cooker to the locked "OFF" position.
Twist the larger of the two connectors on the regulator hose clockwise onto the threads on the propane tank nozzle.
Fasten the other end of the hose to the nozzle on the cooker. Tighten by hand and twist half a turn with pliers to finish the connection.
Swirl soap and water in a bucket until foamy. Dunk a towel in the bucket.
Open the valve on the propane tank, turning the knob counterclockwise.
Squeeze some of the soapy water from the towel at the connection point between the hose and fuel tank and the other end at the cooker. Watch for popping bubbles, which indicate leaking propane. Listen and sniff for propane as well. If there is any evidence of a leak, close the tank and start over with the connections.