TM   5-2815-241-34&P PRELIMINARY  STARTING  PROCEDURES WARNING EXHAUST  GAS  CAN  KILL  YOU Exhaust gas is without color or smell, but can kill you. Breathing exhaust gas produces symptoms of headache, dizziness, loss of muscular control, a sleepy feeling, and coma. Brain damage or death can result from heavy exposure to exhaust fumes of fuel- burning  internal  combustion  engines.  Exhaust  gases  can  become  dangerously concentrated  under  conditions  of  no  air  movement.  Precautions  must  be  followed  to ensure crew safety when the engine of any vehicle is operated for any purpose. 1. DO NOT operate vehicle engine inside building unless ample ventilation is available. 2. DO NOT idle engine for long periods without ventilator blower operating. 3. DO NOT drive any vehicle with inspection plates, cover plates, or engine com- partment  doors  removed  unless  necessary  for  maintenance  purposes. 4. BE ALERT at all times during vehicle operation for exhaust odors and exposure symptoms. If either is present, IMMEDIATELY VENTILATE personnel compart- ments. If symptoms persist, remove affected crew to fresh air; keep warm; DO NOT   PERMIT   PHYSICAL   EXERCISE;   if   necessary,   give   artificial   respiration. 5. FOR  ARTIFICIAL  RESPIRATION,  REFER  TO  FM21-11. 6. BE AWARE; the field protective mask for chemical-biological-radiological (CBR) protection  will  not  protect  you  from  carbon  monoxide  poisoning. THE  BEST  DEFENSE  AGAINST  CARBON  MONOXIDE  POISONING  IS  GOOD  VENTILATION. NOTE Perform the following steps as they are applicable before starting engine in the engine test  stand. 1. Make sure engine exhaust outlet is connected to a suitable shop exhaust system to evacuate the engine exhaust gases safely from the testing area. 2. Check air inlet piping to ensure it is attached correctly and tight. 3. Make sure all cooling system water hoses and clamps are attached correctly and are tight with no leaks. 4. Check all fuel lines and fittings to make sure they are attached correctly and are tight with no  leaks. 5. Make sure all engine test stand gauges and controls are attached to engine properly and are   tight. 6. Check engine oil level with oil level dipstick to make sure crankcase is full. Oil level should be  between  the  H  (high)  and  L  (low)  marks  on  dipstick. 2-9