Ikelite 6812.61 Instruction Manual page 27

Control Shaft
Tighten set screw down
against this flat area
when replacing the knob.
Housing
Diagram A
Housing
Lubricate end of shaft
before reinserting into
gland
Diagram B
Gland
Loosen set screw
(allen wrench required)
Lubricate shaft
Pull out knob to
expose shaft
27