TM 9-2320- 209-20-3-1 1. Join fuel return tube (1) to adapter (2) on fuel return solenoid valve (3). Using 9/16-inch open end wrenches, tighten coupling nut ( 4). 2. Join fuel supply tube (5) to adapter (6) on fuel filter (7). Using 9/16-inch open end wrenches, tighten coupling nut ( 8). GO TO FRAME 10 A 087573 4-119