TM 10-4520-261-12&P SPACE HEATER ARCTIC (SHA) PREVENTIVE MAINTENANCE CHECK AND SERVICES (PMCS)   0010 00 0010 00-7 THIS SECTION COVERS: During Operation PMCS Checks and Services INITIAL SETUP: SHA Shutdown and Cool Maintenance Level Operator Table 1. Preventive Maintenance Checks and Services for SHA - continued ITEM NO. INTERVAL ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: WHEN USING EITHER LIQUID OR SOLID FUEL. . . 12 During Nested stack assembly   Check stack assembly (1) for smoke leakage inside heated space. Stack assembly leaks smoke into heated space. 13 During Heater body assembly Check heater body (2) for smoke leakage inside heated space. Heater body leaks smoke into operating space. WHEN USING LIQUID FUEL. . . 14 During Fuel flow control valve   Check fuel flow control valve (3) for fuel leakage. Valve leaks fuel. 15 During Fuel hoses Check hose (4) walls and fittings (5) for fuel leakage.   Hoses leak fuel. 16 During Fuel can, gravity feed adaptor Check fuel can (6) and gravity feed adaptor (7) for fuel leakage. Fuel can or adaptor  leak fuel. WHEN USING SOLID FUEL. . . No ‘DURING’ PMCS in solid fuel mode.