a) Remove the flush valve cover and its O-ring.
b) Lock the impeller in place by inserting a rod through the hole.
c) Remove the impeller screw.
d) Turn the adjustment screw counterclockwise until the impeller breaks free from the
shaft.
e) Hand-tighten the impeller screw to prevent it from falling off.
f) Remove the rod.
3. Raise the pump.
4. Remove the drive unit from the pump housing:
Maintenance
Flygt 3153 Installation, Operation, and Maintenance Manual 45
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