TM 5-6115-365-15 C2 Section II.  OPERATING INSTRUCTIONS 6-3.  Setting-up Instructions a. Leveling. (1) Locate  the  trailer  on  as  level  a  surface  as possible   in   order   for   the   generator   set   to   operate   as efficiently as possible. (2) Set  brakes  and  block  wheels  securely  to prevent  any  movement.    Operate  handbrake  at  weekly intervals to insure freedom of linkage. (3) Pull  leg  prop  down  and  adjust  length  for firm contact with ground. WARNING Wheels  must  be  blocked,  brakes  set, and   leg   prop   down   in   the   support position  before  attempting  to  roll  up the  tarpaulin  and  before  starting  to assemble or set up the equipment for operation. b. Preparation for Starting. (1) Remove  the  canvas  tarpaulin  and  remove the roof bows and racks as shown in figure 6-2. (2) Open   the   trailer   tailgate   and   remove   all loose  auxiliary  items  and  anything  else  that  might  block the  free  circulation  of  air  through  the  trailer  and  around the generator sets. CAUTION It    is    of    foremost    importance    that there be free circulation of air around the generator sets at all times during operation. WARNING Never operate the generator set in an enclosed    area    unless    the    exhaust gases    are    piped    to    the    outside. Inhalation    of    exhaust    fumes    will result in serious illness or death. c. Grounding. WARNING Never  operate  the  generator  set  until it has been properly grounded. Electrical  defects  in  the  load  lines  or equipment can cause death by electrocution  when  contact  is  made with an ungrounded system. (1) The generator set must be grounded prior to operation.  The ground may be any of three methods, depending on the location and the terrain. (a) A  ground  rod  driven  to  a  depth  of  8 feet. (b) An underground metallic water piping system. (c) A metal plate (9 square ft.) buried to a depth of 4 feet. (2) The   ground   lead   must   be   No.      6   AWG copper wire bolted or clamped to the rod, plate, or piping system. (3) Connect  the  other  end  of  the  ground  lead to the trailer ground terminal stud as shown in figure 6-3. 6-4.  Starting a. Perform  pre-starting  and  setting-up  procedures (para 6-3). b. Start the generator as instructed in TM 5-6115-332-12. 6-5.  Stopping Stop the generator set as instructed in TM 5-6115-332-12. 6-6.  Operation a. Operate    the    generator    set    as    instructed    in TM 5-6115-332-12. b. Perform the fuel transfer procedure as instructed in figure 6-4. 6-3