MAINTENANCE
77
515SS MM419 (4--96)
3. With a foot on the brake to keep the
machine from moving, lower the sweeping
assembly to the floor for 15 to 20 seconds.
Raise the sweeping assembly and back the
machine away from the test area.
NOTE: If no chalk or other material is available,
allow the brush to spin on the floor for two
minutes.
4. Look at the main brush pattern made. The
pattern should measure evenly 25 to 50 mm
(1 to 2 in) across the length of the brush.
5. If the brush pattern is tapered more than
15 mm (0.50 in) from one end of the pattern
to the other, the main brush needs to be
leveled.
To level the main brush, remove the left side
panel. Loosen the brush pivot screw. Move
the brush idler end up if the drive end is
narrower than the idler end. Move the brush
idler end down if the drive end is wider than
the idler end. Tighten the hardware.
6. Check the brush pattern again, and readjust
if necessary.
7. Mount the left side panel, if it was removed.
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