I-40 Manual and Spark Ignition
Owner’s Manual • I-40
23
OUTER CONE
a. Using needle nose pliers or a standard screwdriver,
carefully pry up the outer combustion cones tabs
folded under the burner plate. See Fig. 17.
b. Rotate the outer cone slightly so the notches in the
cone
fl
ange align to the formed retainers on the
burner plate. Lift and pull the cone from the burner.
plate. See Fig. 18.
FIG. 17
FIG. 18
c. Once the outer cone is removed, inspect the inner
cone. See Fig. 19. If the cone is in good condition,
(cone weld seam not split or tip is not missing) then
clean using the compressed air method. A bottle
brush may also be run down the venturi tube to
force out any blockages. Using air at the cone end,
blow back any debris out the control end of the
venturi tube.
d. If the inner cone is damaged, remove the three
screws, nuts, and spacers securing the burner plate
to the heater. See Fig. 19.
FIG. 19
5. Remove the burner plate and replace the inner
cone. See Fig. 20. A replacement gasket must
be installed whenever the inner cone is removed.
Clean the surface to which the gasket is located
before installing replacement.
FIG. 20
Outercone Tabs
Weld Seam
Screw
Inner Cone
Tip
Notch
Retainer
Notch
Weld Seam
Gasket
