WITH A SOFTNOSE CONNECTOR (DIAGRAM A):
If there is a handwheel, tighten firmly by hand, or use a wrench. DO NOT OVERTIGHTEN. The rubber O ring must be in place on soft nose POL connectors, otherwise it may not seat and form a good seal.
WITH A HARDNOSE CONNECTOR (DIAGRAM B):
Use 8" adjustable wrench. Tighten firmly but do not use excessive force.
4. Always test for leaks. Apply soapy water with a brush at areas marked with an X on the diagram. Open main cylinder valve. If bubbles appear, and further tightening of the connector does not eliminate the leak, close main cylinder valve and call a qualified propane dealer. If system is free of leaks, light burners and check for a clean blue flame.