24. SERVICE PROCEDURE 24.5.6 DRAIN WATER AND SEDIMENT FROM FUEL FILTER Remove drain plug @ on the bottom of the filter to drain water and sediment accumulated on the bottom. After draining, tighten plug 0. Loosen air vent plug 0. Loosen feed pump knob @ and move the pump up and down to draw off fuel until air ceases to come out of plug 0. Tighten air vent plug 0, push feed pump knob @ into place, and tighten it. 3-49