Weber Summit 650 Step-By-Step Manual page 13

Pull the front panel(1) up and out of the cooking box
assembly.
(1)
Summit 450
(1)
Summit 650
CHECK FOR GAS LEAKS
(CONTINUED)
Do not use an open flame to check for gas
leaks. Be sure there are no sparks or open
flames in the area while you check for
leaks. This will result in a fire or explosion
which can cause serious bodily injury or
death and damage to property.
WARNING: You should check for gas leaks every
time you disconnect and reconnect a gas fitting.
You will need: a soap and water solution and a rag or
brush to apply it.
Note: Since some leak test solutions, including soap and
water, may be slightly corrosive, all connections should be
rinsed with water after checking for leaks.
WARNING: Make sure all burner control knobs are
in the OFF position, including the side burner, if the
barbecue has a side burner.
Turn on gas supply by turning the tank valve handwheel
counterclockwise.
13
DANGER