Weber Summit 400 Step-By-Step Manual page 9

CONNECT FILLED LP
TANK
WARNING: Make sure that the LP tank valve is
closed. Close by turning clockwise.
Hook the LP tank onto the fuel scale. Loosen the tank
lock wing nut. Swing the tank lock down. Tighten the wing
nut. Figure 14.
The hose and regulator are connected in the following
manner:
Slide back the collar of the quick disconnect on the tank
valve. Push the male fitting of the regulator into the quick
disconnect, and maintain pressure. Slide the collar closed.
Figure 15 (a). Figure 15 (b) shows the quick disconnect
engaged and various components of the tank and
regulator. Regulator vent hole should be at 3, 6, or 9
o'clock. It should not be pointed up. Figure 15 (c).
Tank lock
wing nut
Figure 14
(a)
Male
fitting
Hose
Regulator
Regulator
vent
9
Collar
(b)
Valve handwheel
close clockwise
Tank valve
Quick disconnect
engaged
(c)
Turn so regulator vent
does not collect water
Figure 15
Pressure
relief valve
Tank