TM  3-4230-218-12&P 4-6. ORGANIZATIONAL   PREVENTIVE   MAINTENANCE   CHECKS   AND   SERVICES. Refer to Table 4-1. Table 4-1. Organizational Preventive Maintenance Checks and Services HOURLY    SCHEDULE Item No. 1 2 3 4 5 6 7 Interval Hours 200 20 200 20/200 20/200 100 200 Item to be Inspected Decontami- nating  Ap- paratus: Power-Dri- ven, Port- able,  Type A/E32U-8 Water Tank Decontami- nating  Ap- paratus Engine As- sembly Carburetor Engine Fuel Sy- stem Burner Procedure Examine  unit  for  completeness.  In- spect accessories for damage or cor- rosion. Replace damaged or missing accessories. Repair all rips, tears, and punctures in tank fabric using tank repair kit permanent patches. Replace non-re- pairable  tank. Inspect unit for cracked, damaged or deteriorated drive belts. Replace all defective drive belts. Adjust engine RPM. Inspect inlet assembly and  pump  assembly. Clean all foreign matter from pump tubing. Test unit to isolate any defective system components . Inspect cylinder head nuts initially at 20 hrs.   and every 200 hrs. thereaf- ter to verify 32 lb-ft torque. In- spect fuel pump for leaks. 20 hours -   Inspect carburetor for damage or improper adjustment. Remove and clean air filter (see page 4-22). 200  hours   - Remove and clean settling bowl. Examine and adjust RPM set- ting (see page 4-24). Replace worn components. Replace gas line filter (see page 4-28). Clean  burner. Remove and clean spark plug (see page 3-17). 4-6