TM 10-3930-669-20 WARNING • Drycleaning  solvent  (P-D-680)  is  TOXIC  and  flammable.    Wear  protective  goggles  and gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes; and do not breathe vapors.  Keep away from heat or flame.  Never smoke when using solvent; the flashpoint for type I drycleaning solvent is 100°F (38°C) and for type II is 138°F (50°C). Failure to do so may result in injury or death to personnel. • If  personnel  become  dizzy  while  using  cleaning  solvent,  immediately  get  fresh  air  and medical  help.    If  solvent  contacts  skin  or  clothes,  flush  with  cold  water.    If  solvent contacts eyes, immediately flush eyes with water and get immediate medical attention. CAUTION Area  around  filter  must  be  very  clean.    Any  contaminants  entering  filter  adapter  will  damage equipment. (2) Using wiping rags, clean area around fuel filter (1). (3) Remove    fuel    filter    (1)    and    preformed packing    (2)    from    fuel    filter    head    (3). Discard filter and preformed packing. NOTE Tag   and   mark   fuel   hoses   prior   to removal. (4) Remove two screws (4), four washers (5), and two fuel hose (6) from fuel filter head (3). (5) Remove two nuts (7), washers (8), screws (9)  and  fuel  filter  head  (3)  from  filter  tray (10). 4-25