Actually, worst case scenario is you may have to replace the motor. The bearings may be shot or, like I had last month, a motor shaft was so corroded onto the impeller that the threaded part of the shaft broke off.
That white plastic piece on the shaft is looks like the water slinger on a Waterways pump. Might be $250-500 for a complete pump depending on model and size (is it a two speed pump?) If you have freeze concerns you may want to get a new pump/motor assy. and swap it out completely and then rebuild the old one for a spare.
Yep thats exactly what i am going to do. 500 for a new one but iwont have to worry about it.....its a toy somethines they cost money