TM 1-1510-218-10 2-124 d.  Master  Warning  Light    D2  T   .    MASTER WARNING  lights  (red)  are  provided  for  both  the  pilot and copilot.  They are located on the left and right side of the glareshield adjacent to the  MASTER CAUTION lights,     Figure 2-17.          Any     time     a     warning     light illuminates, the MASTER WARNING light will illuminate and will stay illuminated until the condition is corrected   and/or   the   MASTER   WARNING   light   is pressed to reset the circuit.   If a new condition occurs, the    light    will    be    reactivated    and    the    applicable annunciator panel light will illuminate. e.   Master  Caution  Light   C  D1  .    A  MASTER CAUTION  light  (yellow)  is  provided  for  both  the  pilot and copilot.   One is located adjacent to the  MASTER WARNING  light  and  the  other  is  located  on  the  left side   of   the   glareshield,   Figure  2 -17.      Whenever  a caution  light  illuminates,  the   MASTER  CAUTION  will illuminate and will stay illuminated until the condition is corrected   and/or   the    MASTER    CAUTION   light   is pressed to reset the circuit.   If a new condition occurs, the    light    will    be    reactivated    and    the    appropriate annunciator panel lights will illuminate. f.    Master   Caution   Light   D2   T   .      MASTER CAUTION lights (yellow) are provided for both the pilot and copilot.   They are located on the left and right side of the glareshield adjacent to the  MASTER WARNING lights,    Figure    2 -17.         Whenever    a    caution    light illuminates, the  MASTER CAUTION will illuminate and will  stay  illuminated  until  the  condition  is  corrected and/or   the   MASTER   CAUTION   light   is   pressed   to reset the circuits.   If  a  new  condition  occurs,  the  light will   be   reactivated   and   the   appropriate  annunciator panel lights will illuminate. g.  Clocks   C D   .    One  manual  wind  eight-day clock is mounted in the center of each control wheel, Figure 2-22. h.  Clocks   T1   .      One   manual   wind   eight-day clock  is  mounted  in  the  center  of  the  pilot's  control wheel,  whereas a digital clock/timer is mounted in the copilot's wheel, Figure 2-22. i.    Clocks   T2   .      Two  digital  clock/timers  are mounted     in     the     center     of     the     control     wheels, Figure 2-22.      The   clocks   operate   independently   of each  other,  receiving  dc  electrical  power  through  the 5-ampere   CABIN   LIGHTS  circuit  breaker  located  in the  overhead  circuit  breaker  panel  and  a  1.5-ampere fuse    located    in    the    instrument    lights    fuse    panel assembly under the aisle forward of the main spar. Section XII.  SERVICING, PARKING, AND MOORING 2-100.  GENERAL. The following paragraphs include the procedures necessary  to  service  the  aircraft,  except  lubrication.   The    lubrication    requirements    of    the    aircraft    are covered  in  the  aircraft  maintenance  manual.   Refer to Table 2-3    for    fuel    quantity    data.        The    servicing instructions provide procedures and precautions necessary   to   service   the   aircraft.      Service   the   fuel tanks after each flight to keep moisture out of the tanks and to keep the bladder type cells from drying out.   2-101.  FUEL HANDLING PRECAUTIONS. During    warm    weather,    open    fuel    caps slowly to prevent being sprayed with fuel. When aviation gasoline is used in a turbine engine,  extreme  caution  should  be  used when around the combustion chamber and exhaust  area  to  avoid  cuts  or  abrasions.   The  exhaust  deposits  contain  lead  oxide, which will cause lead poisoning. CAUTION Proper   procedures   for   handling   jet   fuels cannot  be  overstressed.    Clean,  fresh  fuel shall  be  used  and  the  entrance  of  water into the fuel storage or aircraft fuel system must be kept to a minimum. When  conditions  permit,  the  aircraft  shall be  positioned  so  that  the  wind  will  carry the   fuel   vapors   away   from   all   possible sources of ignition.   The fuel vehicle shall be    positioned    to    maintain    a    minimum distance   of   10   feet   from   any   part   of   the aircraft,     while     maintaining     a     minimum distance   of   20   feet   between   the   fueling vehicle and the fuel filler point. 1.   Shut off unnecessary electrical equipment on  the  aircraft,  including  radar  and  radar equipment.  The master switch may be left on   to   monitor   fuel   quantity  gauges;  but shall   not   be   moved   during   the   fueling operation.    Do  not  allow  operation  of  any electrical tools, such as drills or buffers, in or near the aircraft during fueling. 2.   Keep  fuel  servicing  nozzles  free  of  snow, water, and mud at all times. WARNING