Sure Heat 2008 Four Seasons FSIS Natural Gas Conversion Kit - Manual (Page 7)

27. Grasp the rear IR cover and remove it. (See Fig. 27)
28. Hold the elbow and use a wrench to remove the rear IR
burner LP orifice. (See Fig. 28)
29. Replace it with the supplied NG orifice and use the six
screws removed in step 24 to secure the rear IR burner
cover and wind shield in position. (See Fig. 29)
Fig. 26
Fig. 27
Fig. 25
FSISLP Natural Gas Conversion Instructions
25. Use the three (3) screws removed in step 20-21 to
secure the bottom IR burner in position. (See Fig. 25)
26. Remove the six screws securing the wind shield and
rear IR cover in position. (See Fig. 26)
Fig. 28
Fig. 29