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71 SO-TOOL PROCEDURE BELOW, STEP 10A : TIGHTEN THE 71 SO-TOOL <br /> FOR 71 SO-TOOLC, SEE PAGE 9 Use the three view holes to ensure that the tool seats <br /> FOR 71 SO-TOOLCT, SEE PAGE 10 out flat against the top of the inlet tube . To prevent <br /> vertical movement of the tool during drilling, hand <br /> Note: 71 SO-TOOL can only be used with testable tighten all three knobs evenly to the upper drop tube , <br /> overfill valves if modified as shown below. A 2 " See Figure 10A. <br /> wide slot must be added to accommodate cast lug . <br /> STEP 11 A : PREPARE DRILL AND BIT <br /> Add 2" wide Confirm that the stop on the 3/ 16" drill bit supplied <br /> slot to use with with the 71 SO-TOOL is in the correct position before <br /> CD drilling . The stop is factory installed at a distance be- <br /> testable <br /> valves tween 2" to 2- 1 / 16" from the tip with the 71 SO -TOOL. If <br /> the stop is not at the correct position it must be fixed <br /> ® before drilling . <br /> CAUTION : If the drill stop is not in the proper loca - <br /> tion failure of a pressure decay leak test may result . <br /> i <br /> 71 SO-TOOL Modifications for Testable Inlet <br /> STEP 9A: INSERT 71 SO -TOOL OVER INLET TUBE4z <br /> I _ <br /> To install the 71 SO-TOOL (sold separately) over the inlet 7 <br /> 7 <br /> tube, first loosen all three knobs, so the tool can pass Tip to stop dimension must be <br /> freely over the inlet tube flange . Align the slot on the 2" to 2- 1 / 16" . <br /> tool with the key on the inlet tube and insert the tool Figure 11A <br /> down . See Figure 9A . <br /> Loosen all Hand STEP 12A: DRILL HOLES <br /> Tool slot knobs view holes tighten With the inlet tube and 71 SO-TOOL in place, carefully <br /> knobs drill a 3/ 16 diameter hole in the upper tube using the <br /> / evenlyrr drill bushing in the knob as a guide. The drill stop is po- <br /> sitioned so it will bottom out against the knob after the <br /> bit has drilled through the upper drop tube . If the stop <br /> is positioned wrong either no hole will be drilled, or a <br /> through hole could potentially be drilled through the <br /> too inlet tube. If no hole is drilled return to step 11 A and <br /> check the stop dimension . If a hole is drilled through <br /> ` ' the inlet tube or into the screw hole the assembly is not <br /> Inlet salvageable . Drill (2) more holes in the two remaining <br /> Tube knobs . <br /> key <br /> -- - - -:J <br /> \ I <br /> Drill thru upper � �J <br /> Figure 9A Figure 10A tubeonly <br /> A <br /> Figure 12A <br /> 8 <br />