(4) _Straps._ The straps, made of wide cotton webbing, are adjustable to fit the wearer. (Fig 18) They are provided with snap release, hook-and-eye, and snap fasteners. The shoulder straps have quick-release fasteners for rapid removal, if necessary, of the tank group from the firer. The upper ends (steel loops) of the shoulder straps are secured by pins to the steel support which connects the two fuel tanks. Each of the pins is held in position by a split cotter pin, which is inserted through a hole in the pin and is then spread. The lower ends of the shoulder straps snap onto metal loops at the bottom of the carrier frame. The upper body straps are attached to metal loops on each side of the carrier frame. The lower body straps are fastened to one of the lower two pairs of eyelets of the carrier pack. _b. Removal of carrier._ (1) To remove carrier or carrier frame, use screw driver and adjustable-end wrench to take off frame clamp, bolt, nut, and lock washer. (Fig 34) Then remove two pairs of bolts, nuts, and lock washers which hold the carrier frame to bottom and top of the fuel tanks. Lift off the carrier. (2) To remove body straps, unsnap ends and lift out of holes. To remove shoulder straps, unsnap lower ends and remove from holes. Pull out cotter pins, then pins, from upper ends of shoulder straps, and lift out straps. (3) To remove carrier pack, unknot and unlace cord. _c. Installation of carrier._ (1) To install carrier frame (or a complete carrier) place frame in position adjacent to fuel tanks (Fig 46), insert bolts in holes, place lock washers and nuts on bolts, and tighten with screw driver and wrench. Replace frame clamp on fuel connector and frame. Insert bolt in holes, place lock washer and nut on bolt. Tighten with screw driver and wrench. (2) If carrier pack has been removed, use cord to relash. Lace tight and use slip-proof knots. (Fig 46) (3) To install straps, snap ends of body straps and lower ends of shoulder straps into positions shown in Figure 46. Place upper ends (steel loops) of shoulder straps in steel support between fuel tanks. Insert two pins through any two of the holes in the support and through the shoulder strap loops. Insert cotter pins in holes in pins and spread cotter pins to lock pins in place. _d. Adjustment of carrier._ Carrier must be carefully adjusted to fit the individual firer so the load will not shift during sudden, rapid changes of firer’s position. Adjustments are as follows: (1) _Cord and carrier pack._ Cord must be tight at all times. The cord furnished with the equipment has very little tendency to stretch. However, pull cord tight when lacing and use slip-proof knots at ends. Tighten cord periodically. [Illustration: Fig 46. Carrier assembled on tank group.]