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MAINTENANCE
DUMPING HOPPER
The removable hopper is located behind the rear
scrub brush. If the hopper becomes full, it will not
accept any more debris. Remove the hopper by
sliding it out from the operator's side of the machine.
The hopper can then be dumped from the top or the
left side door can be removed to dump debris from
the end. The side door is also convenient for
flushing the hopper clean with running water.
BELT REPLACEMENT
1. Remove scrub brushes.
2. Remove four bolts securing broom drive seal
and retainer.
3. Slacken belt tension by means of jack bolt under
motor.
4. The drive hub may be unscrewed from the
inside. Flats are provided on interior drive pulley
axle to facilitate removal.
5. Place belt on motor pulley then pull down into
scrub head.
6. Insert drive hub from inside of scrub head and
through lower loop of belt.
7. Screw axle into side of scrub head.
8. Re-tension belt to deflect 1/8" at center of span
when a pressure of 4 pounds is applied.
9. Install broom drive seal and retainer.
10. Install scrub brushes.
SCRUB DECK ADJUSTMENT
Scrub deck adjustment consists of two types of
adjustments. The first is to insure the individual
brushes make the same width pattern end to end.
Any tapered brush pattern should be adjusted out.
The second is to make the pattern of equal width
between front and rear brushes. Unequal patterns
are caused by the scrub deck not being parallel to
the floor. Proper adjustment is obtained when the
contact patterns of the brushed on the floor show
two 1" rectangles the width of the brushed. The
rectangles should be parallel to each other.
4-9
TESTING, ADJUSTMENT OF INDIVIDUAL
BRUSHES
1. Move the machine to an unfinished area of floor
to avoid marking finish.
2. With water valve off, lock brakes, and lower
scrub head to floor. Allow brushes to run until
automatic shut off occurs. It may be necessary
to repeat this step in the same location until a
good mark can be seen on the floor. This can be
accomplished by touching lightly the directional
pedal to restart the scrub deck without moving
the machine.
3. Raise the scrub deck and note the brush
patterns on the floor. There should be two
rectangles with parallel sides. If the pattern is
tapered, proceed as follows.
ADJUSTMENT OF INDIVIDUAL
BRUSHES
The brush pattern is adjusted front he idler side only.
The idler shaft is locked into position by means of an
allen head screw on the idler door. The shaft is
secured in an eccentric position. With the screw
loose the shaft may be rotated by means of the flats
machined on the interior side of the shaft to achieve
different heights.
1. Determine if idler is to be moved up or down to
balance the pattern.
2. Remove idler door on brush to be balanced.
3. Measure distance of axle from top of door and
record.
4. Loosen allen head screw from outside door.
5. Rotate shaft to new position. Hold shaft in
position.
6. Tighten allen head screw.
7. Install door on machine.
8. Re-start and readjust as necessary.
LEVELING THE SCRUB HEAD
Leveling the cylindrical head is accomplished by a
single bolt and lock nuts located in the adjustment
channel at rear, center of the scrub deck. To
increase pattern width on rear brush, loosen lock
nuts on socket head cap screw and adjust screw
cap down. To increase pattern width on front brush,
adjust screw up. After adjustment, be sure to tighten
lock nuts.
FLX3 980087 04/01/03
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