TM 10-3930-671-24 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. (2) To install fuel filter unit, proceed as follows: (a) Install fuel filter base (3) on bracket (10) with two screws (9) and nuts (8).  Tighten nuts 30-33 Ib-ft (40-50 N- m). (b) Install fuel pipes (6 and 7) on fuel filter base (3) as noted during removal with two compression fittings (4) and seals (5).  Tighten compression fittings 179-190 lb-in (19-21 N-m). (c) Install fuel filter (2) on fuel filter base (3) with two fasteners (1). (d) Connect batteries (Para 3-25). 3-36