Kokomo Grills KO-BAK3BG User Manual page 16

Turn all control knobs back to the full OFF position.
7)
If you are unable to stop a leak turn all control knobs back to the full OFF
a.
position, shut off the gas supply to the grill and release pressure in the hose
and manifold by pushing in and turning any of the control valves one
quarter turn counter-clockwise.
On LP systems, remove the cylinder from the grill.
8)
Call an authorized gas appliance service technician or an LP gas dealer.
9)
Do not use the appliance until the leak is corrected.
10)
PG 16