TM 9-2350-247-10PREVENTIVE MAINTENANCE CHECKS AND SERVICES — Continued 0057 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:b. Start engine in neutral position. Set handthrottle to run engine at 800 to 1000 rpm for 3–5minutes to warm up engine. Release handthrottle.c. Check that fuel gauge is operating.d. Check tachometer for proper operation and thatnormal idle speed is 650 to 700 rpm.NOTEReport abnormal idle speed to unitmaintenance.Turn off engine if temperature goes above220 degrees F (104.4 degrees C).e. Check temperature gauge for proper operationand that normal coolant temperature is 160 to220 degrees F (17.1 to 104.4 degrees C).Temperaturegauge is notworking ormissing.0057 00-22
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