Pool cleaner with diaphragm cassette unit and retention mechanism

A pool cleaner comprising:

• a body extending between a water connection end and foot end, a foot end opening being defined at the foot end, and a first latch opening being defined on the body above the foot end;
• an outer pipe extending from an upper outer pipe end proximate the water connection end to a lower outer pipe end;
• a diaphragm cassette unit arranged inside the body, the diaphragm cassette unit including:
• a cassette extending from an upper cassette end engaging the lower outer pipe end to a lower cassette end engaging the foot end opening;
• an inner pipe extending from an upper inner pipe end inside the outer pipe proximate the water connection end to a lower inner pipe end inside the cassette;
• and
• a flexible diaphragm extending from an upper diaphragm end engaging the lower inner pipe end inside the cassette to a lower diaphragm end engaging the lower cassette end;
• a retention mechanism mounted on the body, the retention mechanism being operable to allow removal and reinstallation of the diaphragm cassette unit through the foot end opening, the retention mechanism including:
• a first latch assembly, the first latch assembly having a first operator extending through a first latch opening defined in the body and a first latch movable by the first operator, the first latch releasably engaging a retention surface on the cassette.