Brinly STH-420 BH Lawn Sweeper - Manual (Page 17)

1009727-A 17.
It is recommended to set the brush height at a higher number than is
anticipated to be needed and perform a short sweeping test on the lawn.
Reduce brush height one setting at a time until the desired sweeping
performance is achieved.
For reference:
Lock Arm
Number Approximate Brush
Height Sweeping Conditions
1 to 3 1/4” to 1” (6.5mm to
25mm) Extremely low-cut grass and light
material.
3 to 6 1” to 2” (25mm to
50mm) Mowed lawns under normal
conditions or light leaves
6 to 10 2” to 3-1/4” (50mm to
82mm) High grass, heavy leaves or heavy
grass clippings
Note: Settings 1 to 3 should be used only on very short grass heights
and light material.
Leveling the Hamper
47
25
Adjust
Not Level
After correct brush height is determined, it may be necessary to adjust
the Hamper Stop (47) so that the Hamper assembly remains clear of the
ground.
To adjust the Hamper Stop (47):
1. Loosen (but do not remove) the two Nuts (25) securing each side of
the Hamper Stop (47).
The rear mounting holes are slotted, allowing the Hamper Stop (47)
to be pivoted up or down for adjustment.
2. Move the Hamper Stop (47) up or down to adjust the resting position
of the Hamper assembly so that it is approximately level.
3. Tighten Nuts (25) on each side to secure the Hamper Stop (47) in
position.
If correct Hamper assembly adjustment is not possible, the Clevis
Assembly (68) may need to be readjusted so that the Hamper assembly
has adequate clearance to the ground.
The sweeper Tow Tubes should be parallel with the ground (or angled
slightly forward) when the sweeper is connected to the towing vehicle. If
the Tow Tubes are angled rearward, adjust the Tow Tube mounting holes
on the Clevis Assembly (68) lower. This will angle the Tow Tubes forward
and raise the Hamper assembly.
Example:
If towing vehicle weighs:
400 lbs
Add operator weight: 200 lbs
Combined weight equals: 600 lbs
To maintain stability in this example, you cannot safely tow more than 600
lbs without fi rst adding ballast (additional weight) to the towing vehicle.
Adjusting the Brush Height
Important: Setting the brush height too low for sweeping
conditions causes excessive wheel skipping and slipping. For
best performance, adjust brush height as high as possible for the
material and conditions.
Normal lawn sweeping is accomplished when the brushes sweep at the
same height as the mower cutting height.
To adjust brush height:
1.
Park towing vehicle on a level, hard surface and set parking brake.
2. Turn towing vehicle off.
3. Measure the height of the of the mower blade.
4. Attach sweeper to the towing vehicle hitch plate as previously
described.
5. Adjust Lock Arm (1) into a slot that allows the brushes to sweep at
the same height as the mower blade:
a) Loosen (do not remove) Knob (31).
b) Apply light downward pressure to Height Adjustment Handle (2)
while lifting up on Lock Arm (1).
c) Move Height Adjustment Handle (2) to the desired position and
lower Lock Arm (1).
d) Tighten Knob (31) fi rmly.
2 3 4 5
6 7 8 9 10
1
2
1
31
6. Check to be sure that the Hamper is not dragging on the ground and
adjust as necessary (see ‘Leveling the Hamper’ section).
Higher numbers on the Lock Arm (1) decal indicate higher brush heights.
2 3 4 5 6 7 8 9 10 1
(41) 1009046 (Not to scale)
For best performance, brush height should be set to the highest possible
number while still adequately sweeping the lawn.
OPERATION
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