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71SO-TOOL PROCEDURE BELOW, FOR 71 SO-TOOLC, SEE PAGE 9 Caution: If the drill stop is not in the proper location failure of a pressure decay leak test may result. STEP 9A: INSERT 71SO-TOOL OVER INLET TUBE 71 SO-TOOL To install the 71 SO-TOOL (sold separately) over the inlet tube, first loosen all three knobs, so the tool can pass freely over the inlet tube flange. Align the slot o on the tool with the key on the inlet tube and insert the tool down. See Figure 9A. Loosen all Hand Tool slot knobs View holes tighten Tip to stop dimension knobs must be 2 to 2-1/16 inch evenly Figure 11A STEP 12A: DRILL HOLES With the inlet tube and 71SO-TOOL in place, carefully drill a 3/16"diameter hole in the upper tube using the drill bushing in the knob as a guide. The drill stop is positioned so it will bottom out against the knob after the bit has drilled through the upper Inlet drop tube. If the stop is positioned wrong either no Tube hole will be drilled, or a through hole could key potentially be drilled through the inlet tube. If no hole is drilled return to step 11 and check the stop dimension. If a hole is drilled through the inlet tube or into the screw hole the assembly is not salvageable. Drill (2) more holes in the two remaining knobs. Figure 9A Figure 10A STEP 10A: TIGHTEN THE 71SO-TOOL Use the three view holes to ensure that the tool seats out flat against the top of the inlet tube. To prevent vertical movement of the tool during drilling hand tighten all three knobs evenly the upper drop tube. See Figure 10A. ® Drill thru upper STEP 11A: PREPARE DRILL AND BIT tube only Confirm that the stop on the 3/16"drill bit supplied with the 71SO-TOOL is in the correct position before Figure 12A drilling. The stop is factory installed at a distance between 2"to 2-1/16"from the tip with the 71 SO- TOOL. If the stop is not at the correct position it must be fixed before drilling. OPW 71 SO Overfill Prevention Valve Page 8