2. Remove the suction cover.
3. Remove the O-ring.
4. Loosen the impeller:
a) Lock the impeller to prevent rotation.
Use pliers, a screwdriver, or similar.
b) Remove the impeller screw and the washer.
5. Remove the impeller:
a) Lock the impeller to prevent rotation.
Use pliers, a screwdriver, or similar.
b) Turn the adjustment screw counterclockwise until the impeller breaks free from
the shaft.
Use a 12 mm hexagon bit adapter (Allen socket) with a 100 mm (4 in) extension.
6 Maintenance
Flygt 2190, 2201 Installation, Operation, and Maintenance Manual 37