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71SO-TOOLC PROCEDURE BELOW, Caution: If the drill stop is not in the proper FOR 71 SO-TOOL, SEE PAGE 8 location failure of a pressure decay leak test may result. STEP 913: INSERT 71S0-TOOLC OVER INLET 71 SO-TOOLC TUBE To install the 71 SO-TOOLC (sold separately)over o the inlet tube, first loosen the thumb screw, so the tool can pass freely over the inlet tube flange. Align the slot on the tool with the key on the inlet tube and insert the tool down. See Figure 913. Tool Slot Hand tighten thumb Tip to stop dimension ------------ screw must be 1-3/16" to 1-1/4" -o o Figure 11 B Loosen thumb screw Z o STEP 1213: DRILL HOLES With the inlet tube and 71 SO-TOOLC in place, carefully drill a 3/16"diameter hole in the upper tube Inlet � using the hole in the 71SO-TOOLC as a guide. The Tube drill stop is positioned so it will bottom out against Key the tool after the bit has drilled through the upper drop tube. If the stop is positioned wrong either no hole will be drilled, or a through hole could 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 guide holes. Figure 9 Figure 10 STEP 1013: TIGHTEN THE 71SO-TOOLC Ensure that the tool seats flat against the top of the inlet tube. To prevent vertical movement of the tool o during drilling, hand tighten the thumb screw against the upper drop tube. See Figure 10B. STEP 11 B: PREPARE DRILL AND BIT Drill through upper tube only Confirm that the stop on the 3/16"drill bit supplied with the 71SO-TOOLC is in the correct position before drilling. The stop is factory installed at a distance between 1-3/16"to 1-1/4"from the tip with Figure 12B the 71 SO-TOOLC. If the stop is not at the correct position it must be fixed before drilling. OPW 71 SO Overfill Prevention Valve Page 9