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Inspect and verify the final shutoff level <br /> NOTE: When you perform this procedure, do not remove the OPV assembly from the tank. <br /> r — — — — — — — — — Seat surface of upper drop tube <br /> I I <br /> I I I <br /> Upper Drop Tube I <br /> Measure <br /> _r i�Final shutoff volume' <br /> I I L _ J <br /> Overfill Prevention Valve <br /> I I <br /> I I <br /> (U.S.T.) <br /> 4,V3„ <br /> I (114 mm) I <br /> I I <br /> I I <br /> L _ _ _ _ _ _ _ _ _ J <br /> Bottom of Tank Not to Scale <br /> ^ 16 <br />