GE Appliances Profile JGB920, Technical Service Manual

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Gas Valve

(Safety Valve)

LP Orifice Spuds

Natural

LP

Pressure Regulator

SHUT OFF LEVER

Oven Only

Lever shown "CLOSED"
Pull lever to "OPEN"

Convert Regulator - Regulator is located in the lower, left 
hand rear corner of the range as viewed from the front.

Depending on the model, remove the storage drawer, 
broiler drawer or false panel to access the regulator.  Some 
models with a broiler drawer will have a metal cover over 
the regulator that must be removed for conversion and 
reinstalled when conversion is complete.

To Convert - Remove the large hex-nut which is located in 
the center of the regulator.  Remove the plastic pin from 
the bottom side of the cap, turn the pin 180 degrees and 
snap the pin back into the cap.  There are raised letters on 
the flat side of the plastic pin, "NAT" and "L.P.".  In the "LP" 
position the end of the pin marked "NAT" should be 
snapped into the bottom of the hex-nut.

Remove surfaced burners and replace all 4 top burner 
orifices spuds with the L.P. orifice spuds supplied with the 
range (refer to the Technical Data Sheet supplied with the 
product for proper L.P. spud location and orifice color 
identification).

Using a 1/2" wrench, tighten the orifice hood(s) supplying 
gas to the oven burner(s) clockwise until snug.

Open the air shutter on the oven burner(s) to the full open 
position and adjust as needed.

Adjust the low flame (simmer) setting on the surface 
burners. 

2

3

4

5

1

The top burner valves have low flame/simmer 
adjustment screws in the center of the control shafts.  A 
flashlight may be required to locate the screw.  A small 
thin blade screwdriver (approx. 3/32" blade width) is 
needed to engage the screw.

TO ADJUST THE LOW FLAME SETTING - at least two 
other burners must be lit.  Light the burner being adjusted 
and turn the knob to "LOW".  Remove the knob and 
insert the screwdriver into the shaft of the control valve.  
Turn the adjustment screw to obtain the desired flame 
size.

TEST FLAME STABILITY - by quickly turning the knob 
from "HI" to "LOW".  If the flame goes out, increase the 
flame size and test again.  Also, test flame stability by 
quickly opening and closing the oven door.  If the flame 
is extinguished by the air current created by the door 
movement, increase the flame size.

LOW FLAME (SIMMER) ADJUSTMENTS

The top burner orifices can be removed by 
removing the burner cap and burner heads.  
Using a 7 millimeter (mm) or a 9/32" nut-driver 
carefully slide the driver down over the orifice 
and rotate counterclockwise to remove.

IMPORTANT NOTE:  The orifices have a spring 
loaded retaining ring around the hex head to 
hold the orifice in the nut driver during 
installation and removal.  A slight amount of 
force is required to push the nut driver down 
over the ring.

Retaining
Ring

Yellow Tip
& Soot

Outer
Cone

Flame Lifts
Off Burner

Inner Cone
Pushed Through
Outer Cone

IMPROPER FLAME

Yellow Tips, Soot and/or
Flame Lifting off Burner

TOP BURNER FLAME ADJUSTMENTS

The top burners do not have air shutters 
adjustments and use non-adjustable 
orifices.  If the flame lifts off of the 
burner, or if you experience "Yellow Tip" 
flames and/or soot in the flames, be sure 
to check the following:

Gas pressure: 4" W.C.P. (natural) and 
10" W.C.P. (L.P.)
Inspect orifice to be sure it is drilled in 
the center and free of debris or burrs.
Be sure the correct size orifice is in 
the proper location
Make sure the range was properly 
converted if on L.P.
If the cause of sooting can not be 
found in the above checks, replace 
the orifice with one having a smaller 
diameter opening

Conversion to L.P. (Propane) Gas

5.

4.

3.

2.

1.