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71SO-TOOLC PROCEDURE BELOW, FOR 71 SO -TOOL, SEE PAGE 8 STEP 913: INSERT 71SO-TOOLC OVER INLET TUBE To install the 71SO-TOOLC (sold separately) over 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 0 screw 0 0 O O o a Loosen thumb screw O Inlet Tube Key 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 during drilling, hand tighten the thumb screw against the upper drop tube. See Figure 1013. STEP 11 B: PREPARE DRILL AND BIT Confirm that the stop on the 3/16" drill bit supplied with the 71 SO-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 the 71 SO-TOOLC. If the stop is not at the correct position it must be fixed before drilling. Caution: If the drill stop is not in the proper location failure of a pressure decay leak test may result. Figure 1113 STEP 12B: DRILL HOLES With the inlet tube and 71 SO-TOOLC in place, carefully drill a 3/16" diameter hole in the upper tube using the hole in the 71 SO-TOOLC as a guide. The drill stop is positioned so it will bottom out against 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 12B Drill through upper tube only M'