Harrison M450 17-inch Lathe: Early-model Manual
Harrison 17-inch Model M450 Lathe - early version, sometimes with "17-inch" badges, white or silver facing plates on the headstock and screwcutting gearbox and the screwcutting gearbox control levers tipped with black knobs: Instruction Manual, Maintenance Manual and Parts Manual as useful Exploded Assembly Diagrams with 10 electrical schematics covering the various versions. This edition shows both headstock clutch/brake types.
For the late version of this lathe, which had black facia panels on headstock and screwcutting gearbox, see MHL450L