SECTION I INTRODUCTION (1) Source Code.(2) Maintenance Code - TM-9-4520-260-23P_6e. DESCRIPTION AND USABLE ON CODE (UOC)4. Explanation of Columns6. How to Locate Repair Parts.FIGURE 1. Heater Housing and Components DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_11FIGURE 2. Control Panel AssemblyDESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_13FIGURE 3. Fuel Pump, Strainer, and Components (Sheet 1 of 3)FIGURE 3. Fuel Pump, Strainer, and Components (Sheet 2)FIGURE 3. Fuel Pump, Strainer, and Components (Sheet 3)DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_17FIGURE 4. CarburetorDESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_19FIGURE 5. Ignition PackDESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_21FIGURE 6. Electronic Control Unit DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_23FIGURE 7. Heater WiringDESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_25DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_26FIGURE 8. Burner Head, Blower Motor/Vent Assembly, and Heat Exchanger (Sheet 1 of 2) FIGURE 8. Burner Head, Blower/Motor/Vent Assembly, and Heat Exchanger (Sheet 2)DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_29DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_30FIGURE 9. Heater CaseDESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_32FIGURE 10. Thermostat and ConnectorsDESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_34DESCRIPTION AND USABLE ON CODES - TM-9-4520-260-23P_35SECTION IV NATIONAL STOCK NUMBER INDEX PART NUMBER INDEXPART NUMBER INDEX - TM-9-4520-260-23P_38PART NUMBER INDEX - TM-9-4520-260-23P_39PART NUMBER INDEX - TM-9-4520-260-23P_40FIGURE AND ITEM NUMBER INDEX - TM-9-4520-260-23P_41FIGURE AND ITEM NUMBER INDEX - TM-9-4520-260-23P_42FIGURE AND ITEM NUMBER INDEX - TM-9-4520-260-23P_43FIGURE AND ITEM NUMBER INDEX - TM-9-4520-260-23P_44