TM 10-3930-671-24 WARNING Fuel is very flammable and can explode easily.  To avoid serious injury or death, keep fuel away from open fire and keep fire extinguisher within easy reach when working with fuel.  Do not work on fuel system when engine is hot.  Fuel can be ignited by hot engine.  When working with fuel, post signs that read NO SMOKING WITHIN 50 FEET (15 m) of vehicle. NOTE Prior to removal, position wiping rag under fuel lines to catch any spilled fuel. (f) To remove fuel gauge sending unit (20), proceed as follows: 1 Remove wires (21 and 22) from fuel gauge sending unit (20). 2 Remove two fuel lines (23) from fuel gauge sending unit (20). 3 Remove retainer (24), fuel gauge sending unit (20), and seal (25) from fuel tank (26).  Discard seal. 4 Remove clamp (27) and strainer (28) from fuel gauge sending unit (20). 3-59