weber LP GAS BARBECUE 3400 - Manual (Page 19)

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g) Lift and twist the burner assembly slightly, to
separate the crossover tube from the burners.
Figure 24. Remove the burners from the cooking
box.
h) To reinstall burners, reverse steps c) through g).
i) Reinstall the Spider Stopper Guards. Slightly rotate
the Spider Stopper Guards so that the seams are in
line with the Venturi fins. There should be no gaps
in the seams or in the fit around the burners and
valves. Figure 25.
CAUTION: If the Spider Stopper Guards do not fit
tightly, contact your dealer.
CAUTION: After reinstalling the gas lines, they
should be leak checked with a soap and water
solution before using the barbecue. (See Step
"Check for gas leaks".)
Crossover tube
Figure 24
Venturi fin
Check fit around burner
Figure 25
Check fit around
valve
d) Unlatch the Spider Stopper Guards and remove.
Figure 21.
e) Remove the manifold bracket and unscrew the two
wing nuts that hold the manifold to the cooking
box. Pull the manifold and valve assembly out of the
burners and carefully set it down. Figure 22.
f) Slide the burner assembly out from under the guide
screw and washer in the corners of the cooking box.
Figure 23.
Figure 21
View from behind
cooking box
Wing nuts
Figure 22
Guide screw
Figure 23