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r <br /> NOTE: If you are installing an OPW® inlet tube, skip the following step. Follow steps 3 to 16 of the <br /> intrusions in the OPW®document 71SO Installation and Maintenance Instructions in VR-102-S <br /> for cutting the upper drop tube and installing the OPW® inlet tube. (Do not use the FFS drop tube <br /> gasket. Make sure you use the gasket included with the OPW® inlet tube.) Proceed to step 4 when <br /> the installation is complete. <br /> 3. Install the drop tube gasket on the upper drop tube (dual point installation as shown below). <br /> Drop tube gasket <br /> (note orientation) <br /> 5 - <br /> 4. Make sure the 0-rings are installed on the upper drop tube adapter. <br /> 5. Insert the upper drop tube adapter into the cut end of the upper drop tube. <br /> 6. Position the roller tool over the mark, and then tighten the roller tool until it makes contact <br /> with the upper drop tube. <br /> 7. Rotate the roller tool one full turn in one direction, and then rotate it one full turn in the <br /> opposite direction. <br /> 8. Tighten the roller tool approximately one tenth of a turn, and then repeat the previous step <br /> until the groove is complete. The tube is indented enough when the shoulder of the roller <br /> tool contacts the tube and creates a witness line or mark. <br /> Groove <br /> s <br /> Witness lines or marks <br /> 9. Repeat the previous three steps to create a groove over the second mark. <br />�-.. . 10 C <br />