Bought new pump ... one worm drive clamp, one wire clamp, two wire connections on terminals and a small screwdriver to wiggle in the holes of the plastic connector in the back ... removed old unit ... soap on te tube fittings and reassemble! Super easy. Ps, dra8nagemcdonough as much water bu hand as you can .. and put a "lipped" cookie sheet under pump before you remove drain line and pump to catch residual.