TM 5-3895-373-20A.BLEED ENGINE FUEL SYSTEM - Continued.WARNINGFuel is very flammable and canexplode easily. To avoid seriousinjury or death:Always wear safety glasses/gogglesat all times.Keep fuel away from open flame orany spark (ignition source).Keep at least a B-C fire extinguisherwithin easy reach when working withfuel or on a fuel system.Do not work on fuel system whenengine is hot; fuel can be ignited by ahot engine.Post signs that read "NO SMOKINGWITHIN 50 FEET" when working withopen fuel lines or fuel tanks.3.LOOSEN VENT SCREW (4) WHILE HOLDINGFLOW RESTRICTOR (5) WITH BACKUPWRENCH. WITH THE HELP OF A SECONDPERSON, OPERATE THE PRIMING LEVER (3)ON FUEL LIFT PUMP WHILE OBSERVINGFUEL FLOW AT VENT SCREW. WHEN FUELFLOW CONTAINS NO AIR, TIGHTEN VENTSCREW AND STOP OPERATING PRIMINGLEVER.4.LOOSEN VENT SCREW (6) WHILE HOLDINGFLOW RESTRICTOR (7) WITH BACKUPWRENCH. WITH THE HELP OF A SECONDPERSON, OPERATE THE PRIMING LEVER (3)ON FUEL LIFT PUMP WHILE OBSERVINGFUEL FLOW AT VENT SCREW. WHEN FUELFLOW CONTAINS NO AIR, TIGHTEN VENTSCREW AND STOP OPERATING PRIMINGLEVER.GO TO NEXT PAGE2-431
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