80 • Replacing a Sensor GX-2003 Operator’s Manual
Figure 9: Replacing the CO and HC Filters
5. Carefully screw the filter retainer with the filter back into the
correct position in the flow chamber.
Replacing a Sensor
1. Verify that the Model GX-2003 is off.
2. Unscrew and remove the three screws that secure the flow
chamber to the back of the GX-2003.
3. Gently pull on the exhaust to remove the flow chamber from the
case and expose the sensors.
4. Remove the sensor from its socket.
5. Carefully insert the replacement sensor in the correct socket.
HC Filter Retainer
CO Filter Retainer
CO Filter
HC Filter
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