A. Remove unit from the water and inspect nuts, bolts, brackets, and float, replacing any broken or worn parts. Tighten any nuts and bolts that may have worked loose.
B. Make sure the intake screen is in place, intact and free of debris.
C. Inspect the motor shaft, propeller and diffuser making sure they are not damaged. If there is damage to any parts, replace them. If debris has wrapped around them, remove it, and inspect the shaft especially around the seal area. Debris wrapped in this area can push the seal faces apart causing water to enter the unit and shorting out the motor. If there is any evidence of this an annual maintenance should be performed (oil and seal change) to keep your unit running properly and warranty in effect.
D. Check motor bearings by turning propeller shaft by hand; it should turn smoothly and quietly.
E. Visually inspect the power cable making sure there are no cuts, worn spots or animal chew marks. If any damage has occurred, replacement of the cable must be done, do not splice your cables. Make sure the cable support grip is not broken and securely fastened to the unit before putting the unit back into the water.
F. Under normal conditions it is recommended that seal and oil maintenance be performed annually. If you have a lot of debris floating in your pond (plastic bags, fishing line, etc.) performing maintenance annually will assure you years of trouble free operation. In all cases it is strongly recommended that you remove your unit from the water annually for a good visual inspection.
