The Secoh EL-60 are easy septic air pumps to rebuild and fix. This rebuild kit provides all the parts that are needed to reconstruct the Secoh EL60. It is essential to open the septic air pump and see if it ha a bunch of red dust inside if it does it would be best to buy a new pump. The red powder is a sign that the aerator coils are failing and a rebuild won't save you money.
The rebuild kit has everything you need:
4 Shims for magnet alignment
2 Chamber block