OPERATION
8400D MM312 (12–94)
24
MAIN BRUSH DOWN PRESSURE KNOB
The main brush down pressure knob changes the
amount of contact the main brush has with the
sweeping surface.
Heavy: Turn the main brush down pressure
knob counter-clockwise.
Light: Turn the main brush down pressure
knob clockwise.
SCRUB BRUSH DOWN PRESSURE KNOB
The scrub brush down pressure knob changes the
pressure of contact the scrub brushes have with
the scrubbing surface.
Increase: Turn the scrub brush down pressure
knob clockwise.
Decrease: Turn the scrub brush down pressure
knob counter-clockwise.
SIDE BRUSH DOWN PRESSURE KNOB
The side brush down pressure knob changes the
side brush contact with the sweeping surface.
Heavy: Turn the side brush down pressure
knob counter-clockwise.
Light: Turn the side brush down pressure
knob clockwise.