Over time, natural wear of the impeller may reduce pump performance. Replace the impeller to ensure reliable performance. Replacement Impellers are available for the following Pondmaster Mag-Drive Pump Models: PM 1.9 (Mfg #12955), PM 3 & 5 (Mfg #12575), PM 7 (Mfg #12585), PM 9.5B (Mfg #12746), PM 12B (Mfg #12756), PM 18B (Mfg #12776), and PM 24 (Mfg #12780).
Note: If you purchased your Pondmaster Mag-Drive pump after 10/2000, the label on the pump will show a "B" after the model number. Any replacement impeller you purchase should be in the "B" Series for your model.