TM  5-3895-360-13 Table  4-1.  Operator/Crew  Troubleshooting  (Con’t). PROBLEM PROBABLE CAUSE TEST PROCEDURE/REMEDY Engine is hard to start (Con’t). b. Engine is under choked. b. Move choke Iever to closed posi- tion and crank two to three times. c. Water is present in fuel system or c. Drain fuel system and fill fuel tank fuel mixture is stale. with fresh fuel and oil mixture (see paragraph 2-10). d. Too much oil is present in fuel d. Drain fuel system and fill fuel tank mixture. with fresh fuel and oil mixture (see paragraph 2-10). 3. Engine starts but will not con- s. Fuel tank cap vent iS closed. a. Open fuel tank cap vent. tinue to run. b. Fuel system leaks. b. inspect fuel system for leaks. Notify Unit Maintenance if leaks are present. c. Fuel mixture is incorrect. c. Drain fuel system and fill fuel tank with fresh fuel and oil mixture (see  paragraph  2-10). 4.  Engine  lacks  power. a. Fuel tank cap vent is closed. a. Open fuel tank cap vent. b. Fuel system leaks. b. Inspect fuel system for leaks. Notify Unit Maintenance if leaks are present. c.   Air   cleaner   filter   is   dirty   or c.  Clean  air  cleaner  filter  (see  para- clogged. graph 2-7 or 2-8). d. Fuel mixture is incorrect. d. Drain fuel system and fill fuel tank with fresh fuel and oil mixture (see  paragraph  2-10). 5.  Engine  stalls  under  load. a. Fuel tank cap vent is closed. a. Open fuel tank cap vent. b. Engine is overloaded. b.  Allow  engine  to  cool. c. Airflow is obstructed. c. Clean cylinder toolings. 6. Engine misses. a. Spark plug is fouled. a.  Notify  Unit  Maintenance. b. Fuel mixture is incorrect. b. Drain fuel system and fill fuel tank with fresh fuel and oil mixture (see  paragraph  2-10). 4-3