MAINTENANCE
49
S20 Gas/LP 9006719 (4
−
2014)
CHECKING THE MAIN BRUSH PATTERN
1. Apply chalk, or a similar marking material, to
a smooth and level section of the floor.
NOTE: If chalk or other material is not available,
allow the brush to spin on the floor for two
minutes. A polish mark will remain on the floor.
2. Lower the main brush onto the chalked area
and hold it there for 15 to 20 seconds without
moving the machine.
3. Raise the brush and drive the machine from
the chalked area. The brush pattern should be
50 to 65 mm (2.0 to 2.5 in) across the entire
length of the brush. Refer to
ADJUSTING
THE MAIN BRUSH WIDTH.
00582
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking
brake, turn off machine, and remove key.
4. If the brush pattern is tapered, see
ADJUSTING THE MAIN BRUSH TAPER
section of this manual.
00601
ADJUSTING THE MAIN BRUSH TAPER
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking
brake, turn off machine, and remove key.
1. Remove the brush idler plate and brush.
2. Loosen the shaft bearing bracket mounting
bolts.
3. Move the bracket up or down in the slots and
tighten the mounting bolts.
4. Reinstall the brush and brush idler plate.
5. Check the main brush pattern and readjust as
necessary. Set the main brush adjustment
knob to the same color band as the brush
idler plate.