A juice extractor includes a hopper, food processing chamber, and a drivetrain releasably coupled to the food processing chamber. The releasable coupling includes a lever arrangement which pivots to operate a locking member, to thereby open or close a bayonet type coupling. The locking member includes a locking wheel having a ring of notches adapted to receive projections at a mating part of the food processing chamber. Rotation of the locking wheel moves the ring of notches into and out of alignment with the projections.
