TM 9-4310-397-14 Table 2-1.  Preventive Maintenance Checks and Services for 16MS125 - Continued Location Item No. Interval Procedure Not Fully Mission Capable If: Item to Check/Service 43 Weekly TACHOMETER Inspect TACHOMETER (51) for cracked  Cover lens damaged to or damaged cover lens and cracks in interfere with accurate case. reading or crack in case. 44 Weekly SAFETY OVERRIDE Operate SAFETY OVERRIDE switch Switch binds. Switch (52) and check for binding when pushed. 45 Weekly IGNITION SWITCH Operate IGNITION switch (53) and    Switch binds. check for binding when pulled. 46 Weekly COMPRESSOR Inspect COMPRESSOR RESTRICTION Cover lens damaged to RESTRICTION INDICATOR (54) for cracked or interfere with accurate INDICATOR damaged cover lens and cracks in case.  reading or crack in case. 47 Weekly ENGINE Inspect ENGINE RESTRICTION Cover lens damaged to RESTRICTION INDICATOR (55) for cracked or interfere with accurate INDICATOR damaged cover lens and cracks in case.  reading or crack in case. 48 Weekly RECEIVER PRESSURE Inspect RECEIVER PRESSURE gauge   Cover lens damaged to Gauge (56) for cracked or damaged cover lens    interfere with accurate and cracks in case. reading or crack in case. INTERIOR 49 Weekly Instrument Control Inspect wiring harness (57) for cut or Wire lead cut or frayed or Panel Wiring Harness frayed wires and missing or damaged terminal missing or terminals. damaged. 2-23