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71SO=TOOL PROCEDURE BELOW, Caution : If the drill stop is not in the proper FOR 71SO =TOOLC , SEE PAGE 9 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 C, 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 9A . Loosen all Hand Tip to stop dimension Tool slot knobs View holes tighten must be 2 to 2- 1 /16 inch knobs Figure 11A evenly STEP 12A : DRILL HOLES ® With the inlet tube and 71SO TOOL in place , carefully drill a 3/16" diameter hole in the upper tube o 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 drop tube. If the stop is positioned wrong either no Inlet hole will be drilled , or a through hole could Tube potentially be drilled through the inlet tube . If no key 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 71SOmTOOL 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 tube only STEP 11A : PREPARE DRILL AND BIT Confirm that the stop on the 3/16" drill bit supplied with the 71 SO -TOOL is in the correct position before Figure 12A drilling . The stop is factory installed at a distance between 2 " to 2A /16" from the tip with the 71SO " TOOL . If the stop is not at the correct position it must be fixed before drilling . 68