TM 5-3895-374-24-2To adjust the oil pressure, remove cover screw and insert 1/8 Allen Wrench. Turncounterclockwise to below pressure desired. Turn clockwise to set to desired pressure. Keepcover screw tight except when adjusting pressure.The bypass pressure on Hi-Low fire burners is adjusted at the bypass regulating valve byloosening the motor driven linkage and turning the stem on the valve to the desired pressure.Refer to Section 5.8: Fuel Oil Flow Schematic.CAUTION:Disconnect pump coupling when operating on Gas Fuel.NOTE:For two-pipe installation (supply and return) to fuel oil storage tank, the ByPassPlug must be in position as shown in cut-away. Remove Cover and insert AllenWrench to be sure ByPass Plug is screwed in tight.page 3 - 1164
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