MAINTENANCE
3Ć25
186E MM160 (12–95)
BRUSHES
MAIN BRUSH
The main brush sweeps debris into the debris
hopper. Inspect the main brush daily for wear or
damage. Remove any string or wire found tangled
on the main brush, the main brush drive hub, or
the main brush idler hub.
Rotate the main brush end-for-end after every
50 hours of operation to obtain maximum brush
life. The main brush should be replaced when the
remaining bristle measures 0.5 in (15 mm).
The main brush pattern should be checked after
every 50 hours of operation. The main brush
pattern should be 1.25 in (30 mm) wide. Main
brush pattern adjustments are made by turning
the main brush lift handle.
TO REMOVE MAIN BRUSH
1. Turn off the machine and set the machine
parking brake.
FOR SAFETY: Before Leaving Or Servicing
Machine; Stop On Level Surface, Set Parking
Brake, And Turn Off Machine.
2. Place the main brush lift handle in the (Main
Brush Free-Float) position.
3. Open the main brush access door.
4. Pull the main brush out of the brush
compartment.
TO INSTALL MAIN BRUSH
1. Slide the main brush through the main brush
access door into the brush compartment.
2. Rotate the main brush until the slots on the
ends of the main brush engage the keys on
the main brush drive hub.
NOTE: Do not force the main brush onto the drive
hub. When the main brush slots and drive hub
keys are properly aligned, the main brush will
easily engage the drive hub.
3. Close and secure the main brush access
door, making sure the lift arm engages the
idler arm lift pins.
D
C
A
B
02347
CLOSING MAIN BRUSH ACCESS DOOR
A. Lift Arm Pin
B. Lift Arm
C. Idler Key
D. Access Door
4. Check and adjust main brush pattern as
described in TO CHECK AND ADJUST
MAIN BRUSH PATTERN.
TO CHECK AND ADJUST MAIN BRUSH
PATTERN
1. Apply chalk or some material that will not
blow away easily, to a smooth, level surface.
2. Start the motor.
3. With side brush and main brush raised,
position main brush over the chalked area.
4. While holding the machine in place, move
the main brush lift handle in the (Main Brush
Free-Float) position. Let the brush remain on
the floor for 15 to 20 seconds.
5. Place the main brush lift handle in the (Main
Brush Up) position.
