Tennant 8400 User Manual
8400
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Operator Manual
MM311
This manual is furnished with each new TENNANT Model 8400. It provides necessary operating and
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preventive maintenance instructions. Read this manual completely and understand the machine before
operating or servicing it.
This machine will provide excellent service. However, the best results will be obtained at minimum
costs if:
The machine is operated with reasonable care.
The machine is maintained regularly – per the maintenance instructions provided.
The machine is maintained with TENNANT supplied or approved parts.
Manual Number – MM311
Revision: 02
Published: 4–96
Copyright 1994, 1996 TENNANT, Printed in U.S.A.
CONTENTS
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CONTENTS
SAFETY PRECAUTIONS 3. . . . . . . . . . . . . . . . .
OPERATION 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATOR RESPONSIBILITY 7. . . . . . . . .
MACHINE COMPONENTS 9. . . . . . . . . . . . .
CONTROL PANEL SYMBOLS 10. . . . . . . . . .
CONTROLS AND INSTRUMENTS 12. . . . . .
OPERATION OF CONTROLS 13. . . . . . . . . .
DIRECTIONAL PEDAL 13. . . . . . . . . . . . . .
BRAKE PEDAL 14. . . . . . . . . . . . . . . . . . . .
PARKING BRAKE LEVER 14. . . . . . . . . . .
PARKING BRAKE PEDAL 14. . . . . . . . . . .
HAZARD LIGHT SWITCH (OPTION) 15. .
OPERATING LIGHTS SWITCH 15. . . . . .
FILTER SHAKER SWITCH 15. . . . . . . . . .
HOPPER RAISE SWITCH 15. . . . . . . . . . .
HOPPER DOOR SWITCH 16. . . . . . . . . . .
HOPPER LOWER SWITCH 16. . . . . . . . .
SIDE BRUSH SWITCH 16. . . . . . . . . . . . . .
VACUUM FAN SWITCH 16. . . . . . . . . . . . .
MAIN BRUSH NORMAL SPEED
SWITCH 17. . . . . . . . . . . . . . . . . . . . . . . .
MAIN BRUSH II SPEEDt SWITCH 17. . . .
CHARGING SYSTEM LIGHT 17. . . . . . . .
ENGINE OIL PRESSURE LIGHT 18. . . . .
ENGINE WATER TEMPERATURE
LIGHT 18. . . . . . . . . . . . . . . . . . . . . . . . . .
HOPPER TEMPERATURE LIGHT –
THERMO SENTRY 18. . . . . . . . . . . .
CLOGGED FILTER LIGHT 18. . . . . . . . . .
RECOVERY TANK FULL LIGHT 19. . . . .
FUEL LEVEL GAUGE 19. . . . . . . . . . . . . . .
HOURMETER 19. . . . . . . . . . . . . . . . . . . . .
ES SWITCH (OPTION) 19. . . . . . . . . . . .
DETERGENT FLOW SWITCH
(OPTION) 20. . . . . . . . . . . . . . . . . . . . . .
EDGE CLEAN SWITCH 20. . . . . . . . . . . . .
SCRUB BRUSH SWITCH 20. . . . . . . . . . .
SQUEEGEE AND VACUUM
FAN SWITCH 21. . . . . . . . . . . . . . . . . . .
ENGINE SPEED SWITCH 21. . . . . . . . . . .
STEERING WHEEL 21. . . . . . . . . . . . . . . .
HORN BUTTON 22. . . . . . . . . . . . . . . . . . . .
IGNITION SWITCH 22. . . . . . . . . . . . . . . . .
TURN SIGNAL SWITCH (OPTION) 22. . .
STEERING COLUMN TILT LEVER 22. . .
CIRCUIT BREAKERS 23. . . . . . . . . . . . . . .
MAIN BRUSH DOWN PRESSURE
KNOB 23. . . . . . . . . . . . . . . . . . . . . . . . . .
SCRUB BRUSH DOWN PRESSURE
KNOB 24. . . . . . . . . . . . . . . . . . . . . . . . . .
SIDE BRUSH DOWN PRESSURE
KNOB 24. . . . . . . . . . . . . . . . . . . . . . . . . .
SOLUTION FLOW LEVER 24. . . . . . . . . . .
Page
Page
LATCHES 25. . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE CHOKE KNOB 25. . . . . . . . . . . . .
OPERATOR SEAT 26. . . . . . . . . . . . . . . . . .
HOPPER SUPPORT BAR 26. . . . . . . . . . .
HOW THE MACHINE WORKS 27. . . . . . . . . .
PRE-OPERATION CHECKLIST 27. . . . . . . . .
CHANGING AN LPG FUEL TANK 29. . . . . . .
STARTING THE MACHINE 31. . . . . . . . . . . . .
SWEEPING, SCRUBBING, AND BRUSH
INFORMATION 33. . . . . . . . . . . . . . . . . . . .
SWEEPING 35. . . . . . . . . . . . . . . . . . . . . . . . . .
STOP SWEEPING 36. . . . . . . . . . . . . . . . . . . .
EMPTYING THE HOPPER 37. . . . . . . . . . . . .
FILLING THE TANKS 38. . . . . . . . . . . . . . . . . .
SCRUBBING 40. . . . . . . . . . . . . . . . . . . . . . . . .
DOUBLE SCRUBBING 42. . . . . . . . . . . . . . . . .
STOP SCRUBBING 42. . . . . . . . . . . . . . . . . . .
DRAINING AND CLEANING THE TANKS 43
STOP THE MACHINE 45. . . . . . . . . . . . . . . . .
POST-OPERATION CHECKLIST 47. . . . . . . .
ENGAGING HOPPER SUPPORT BAR 49. .
DISENGAGING HOPPER SUPPORT BAR 50
OPERATION ON INCLINES 51. . . . . . . . . . . .
OPTIONS 52. . . . . . . . . . . . . . . . . . . . . . . . . . . .
VACUUM WAND (WET) 52. . . . . . . . . . . . .
TIE-DOWNS 55. . . . . . . . . . . . . . . . . . . . . . .
MACHINE TROUBLESHOOTING 56. . . . . . .
MAINTENANCE 58. . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE CHART 58. . . . . . . . . . . . . . .
LUBRICATION 60. . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 60. . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR WHEEL SUPPORT 60. . . . . . . . . . .
FRONT WHEEL BEARINGS 60. . . . . . . . .
HOPPER LIFT ARM PIVOTS 61. . . . . . . .
HOPPER DOOR PIVOTS 61. . . . . . . . . . .
REAR SQUEEGEE CASTERS 61. . . . . . .
HYDRAULICS 62. . . . . . . . . . . . . . . . . . . . . . . .
HYDRAULIC FLUID RESERVOIR 62. . . .
HYDRAULIC FLUID 62. . . . . . . . . . . . . . . .
HYDRAULIC HOSES 63. . . . . . . . . . . . . . .
PROPELLING MOTOR 63. . . . . . . . . . . . . .
ENGINE 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM 64. . . . . . . . . . . . . . . .
AIR FILTER INDICATOR 64. . . . . . . . . . . .
AIR FILTER 65. . . . . . . . . . . . . . . . . . . . . . . .
FUEL FILTER 66. . . . . . . . . . . . . . . . . . . . . .
CARBURETOR 66. . . . . . . . . . . . . . . . . . . .
SPARK PLUGS 66. . . . . . . . . . . . . . . . . . . .
DISTRIBUTOR 66. . . . . . . . . . . . . . . . . . . . .
CRANKCASE VENTILATION SYSTEM 66
INTAKE MANIFOLD 66. . . . . . . . . . . . . . . .
TIMING BELT 66. . . . . . . . . . . . . . . . . . . . . .
BATTERY 67. . . . . . . . . . . . . . . . . . . . . . . . . . . .
8400 MM311 (4–96)
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CONTENTS
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BELTS AND CHAINS 67. . . . . . . . . . . . . . . . . .
ENGINE BELT 67. . . . . . . . . . . . . . . . . . . . .
STATIC DRAG CHAIN 67. . . . . . . . . . . . . .
DEBRIS HOPPER 68. . . . . . . . . . . . . . . . . . . . .
HOPPER DUST FILTER 68. . . . . . . . . . . . .
REMOVING HOPPER DUST FILTER 68.
THERMO SENTRY 70. . . . . . . . . . . . . . .
SCRUB HEAD 70. . . . . . . . . . . . . . . . . . . . . . . .
BRUSHES 70. . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAIN BRUSH 70. . . . . . . . . . . . . . . . . . . . . .
REPLACING MAIN BRUSH 71. . . . . . .
CHECKING AND ADJUSTING MAIN
BRUSH PATTERN 72. . . . . . . . . . . .
SIDE BRUSH 74. . . . . . . . . . . . . . . . . . . . . .
REPLACING SIDE BRUSH 74. . . . . . .
SIDE BRUSH GUARD 75. . . . . . . . . . . . . .
SCRUB BRUSHES 75. . . . . . . . . . . . . . . . .
REPLACING THE SCRUB
BRUSHES 75. . . . . . . . . . . . . . . . . . .
SOLUTION SYSTEM 76. . . . . . . . . . . . . . . . . .
SOLUTION VALVE 76. . . . . . . . . . . . . . . . .
RECOVERY TANK 76. . . . . . . . . . . . . . . . .
SOLUTION TANK 76. . . . . . . . . . . . . . . . . .
SQUEEGEES 77. . . . . . . . . . . . . . . . . . . . . . . . .
LEVELING THE REAR SQUEEGEE 77. .
ADJUSTING REAR SQUEEGEE
BLADE DEFLECTION 78. . . . . . . . . . . .
SQUEEGEE BLADES 79. . . . . . . . . . . . . . . . .
REAR SQUEEGEE 79. . . . . . . . . . . . . . . . .
REPLACING OR ROTATING REAR
SQUEEGEE BLADES 79. . . . . . . . .
SIDE SQUEEGEES 80. . . . . . . . . . . . . . . .
REPLACING SIDE SQUEEGEE
BLADES 80. . . . . . . . . . . . . . . . . . . . .
SKIRTS AND SEALS 81. . . . . . . . . . . . . . . . . .
HOPPER LIP SKIRTS 81. . . . . . . . . . . . . . .
HOPPER SIDE SKIRT 81. . . . . . . . . . . . . .
BRUSH DOOR SKIRTS 81. . . . . . . . . . . . .
REAR SKIRTS 82. . . . . . . . . . . . . . . . . . . . .
BRUSH DOOR SEALS 82. . . . . . . . . . . . . .
HOPPER SEALS 82. . . . . . . . . . . . . . . . . . .
HOPPER INSPECTION DOOR SEAL 82.
HOPPER DOOR SEALS 83. . . . . . . . . . . .
HOPPER COVER SEAL 83. . . . . . . . . . . . .
HOPPER DUST SEAL 83. . . . . . . . . . . . . .
HOPPER VACUUM FAN SEAL 83. . . . . . .
DEMISTER AND COVER SEALS 84. . . . .
BRAKES AND TIRES 84. . . . . . . . . . . . . . . . . .
SERVICE BRAKES 84. . . . . . . . . . . . . . . . .
PARKING BRAKE 84. . . . . . . . . . . . . . . . . .
TIRES 84. . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR WHEEL 84. . . . . . . . . . . . . . . . . . . . .
PUSHING, TOWING, AND
TRANSPORTING THE MACHINE 85. . . .
MACHINE JACKING 86. . . . . . . . . . . . . . . . . . .
STORING MACHINE 86. . . . . . . . . . . . . . . . . .
Page
Page
SPECIFICATIONS 87. . . . . . . . . . . . . . . . . . . . . . .
GENERAL MACHINE PERFORMANCE 87. .
POWER TYPE 88. . . . . . . . . . . . . . . . . . . . . . . .
STEERING 88. . . . . . . . . . . . . . . . . . . . . . . . . . .
HYDRAULIC SYSTEM 88. . . . . . . . . . . . . . . . .
INDEX 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
8400 MM311 (4–96)
SAFETY PRECAUTIONS
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SAFETY PRECAUTIONS
The following precautions are used throughout
this manual as indicated in their description:
WARNING: To warn of hazards or
unsafe practices which could result in
severe personal injury or death.
FOR SAFETY: To identify actions which
must be followed for safe operation of
equipment.
The machine is suited to sweep disposable
debris. Do not use the machine other than
described in this Operator Manual. The machine
is not designed for use on public roads.
The following information signals potentially
dangerous conditions to the operator or
equipment:
FOR SAFETY:
1. Do not operate machine:
– Unless trained and authorized.
– Unless operator manual is read and
understood.
– If it is not in proper operating
condition.
– In flammable or explosive areas unless
designed for use in those areas.
– In areas with possible falling objects
unless equipped with overhead guard.
2. Before starting machine:
– Check for fuel, oil, and liquid leaks.
– Keep sparks and open flame away
from refueling area.
– Make sure all safety devices are in
place and operate properly.
– Check brakes and steering for proper
operation.
3. When starting machine:
– Keep foot on brake and directional
pedal in neutral.
4. When using machine:
– Use brakes to stop machine.
– Go slow on inclines and slippery
surfaces.
– Use care when reversing machine.
– Move machine with care when hopper
is raised.
– Make sure adequate clearance is
available before raising hopper.
– Do not carry passengers on machine.
– Always follow safety and traffic rules.
– Report machine damage or faulty
operation immediately.
5. Before leaving or servicing machine:
– Stop on level surface.
– Set parking brake.
– Turn off machine and remove key.
6. When servicing machine:
– Avoid moving parts. Do not wear loose
jackets, shirts, or sleeves.
– Block machine tires before jacking
machine up.
– Jack machine up at designated
locations only. Block machine up with
jack stands.
– Use hoist or jack of adequate capacity
to lift machine.
– Wear eye and ear protection when
using pressurized air or water.
– Disconnect battery connections before
working on machine.
– Avoid contact with battery acid.
– Avoid contact with hot engine coolant.
– Allow engine to cool.
– Keep flames and sparks away from
fuel system service area. Keep area
well ventilated.
– Use cardboard to locate leaking
hydraulic fluid under pressure.
– Use Tennant supplied or approved
replacement parts.
8400 MM311 (2–94)
3
SAFETY PRECAUTIONS
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WARNING: Engine emits toxic gases.
Severe respiratory damage or
asphyxiation can result. Provide
adequate ventilation. Consult with your
regulatory authorities for exposure
limits. Keep engine properly tuned.
WARNING: Raised hopper may fall.
Engage hopper support bar.
WARNING: Lift arm pinch point. Stay
clear of hopper lift arms.
WARNING: Moving belt and fan. Keep
away.
WARNING: Flammable materials can
cause an explosion or fire. Do not use
flammable materials in tank(s).
WARNING: Flammable materials or
reactive metals can cause explosion or
fire. Do not pick up.
WARNING: Strong vacuum. Keep away
from fan inlet when fan is running.
WARNING: Hot bumper. Keep away.
CALIFORNIA PROPOSITION 65
WARNING: Engine exhaust from this
product contains chemicals known to
the State of California to cause cancer,
birth defects, or other reproductive
harm.
4
8400 MM311 (4–96)
The following safety labels are mounted on the
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machine in the locations indicated. If these or any
label becomes damaged or illegible, install a new
label in its place.
SAFETY PRECAUTIONS
EMISSIONS LABEL – LOCATED ON THE SIDE
PANEL OF THE OPERATOR COMPARTMENT.
FOR SAFETY LABEL – LOCATED ON THE
SIDE PANEL OF THE OPERATOR
COMPARTMENT.
ENGINE FAN AND BELT LABEL – LOCATED
ON THE RADIATOR SHROUD.
HOPPER SUPPORT BAR LABEL – LOCATED
ON THE HOPPER SUPPORT BAR AND ON
BOTH HOPPER LIFT ARMS.
8400 MM311 (2–94)
09078
FLAMMABLE SPILLS LABEL – LOCATED ON
THE SIDE PANEL OF THE OPERATOR
COMPARTMENT.
5
SAFETY PRECAUTIONS
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FLAMMABLE MATERIALS LABEL – LOCATED
ON THE SOLUTION TANK COVER.
STRONG VACUUM LABEL – LOCATED ON
THE VACUUM FAN HOUSING.
HOPPER LIFT ARMS LABEL – LOCATED ON
BOTH HOPPER LIFT ARMS.
09078
HOT BUMPER LABEL – LOCATED ON THE
REAR LEFT PANEL.
6
8400 MM311 (2–94)
OPERATOR RESPONSIBILITY
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The operator’s responsibility is to take care
of the daily maintenance and checkups of
the machine to keep it in good working
condition. The operator must inform the
service mechanic or supervisor when the
required maintenance intervals occur as
stated in the MAINTENANCE section of this
manual.
Read this manual carefully before operating
this machine.
FOR SAFETY: Do not operate machine,
unless operation manual is read and
understood.
OPERATION
OPERATION
Check the machine for shipping damage.
Check to make sure machine is complete
per shipping instructions.
Check the hydraulic fluid level in the
hydraulic reservoir.
Check the engine oil level.
07324
8400 MM311 (2–94)
7
OPERATION
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Check the radiator coolant level.
FOR SAFETY: When servicing machine,
avoid contact with hot engine coolant.
Gasoline powered machines: Fill the fuel
tank.
FOR SAFETY: When servicing machine,
keep flames and sparks away from fuel
system service area. Keep area well
ventilated.
LPG powered machines: Install the LPG
fuel tank on the machine. See CHANGING
AN LPG FUEL TANK.
FOR SAFETY: When servicing machine,
keep flames and sparks away from fuel
system service area. Keep area well
ventilated.
After the first 50 hours of operation, follow
the recommended procedures stated in the
MAINTENANCE CHART.
Keep your machine regularly maintained by
following the maintenance information in this
manual. We recommend taking advantage
of a regularly scheduled service contract
from your Tennant representative.
Order parts and supplies directly from your
authorized Tennant representative. Use the
parts manual provided when ordering parts.
10188
8
8400 MM311 (12–94)
MACHINE COMPONENTS
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OPERATION
B
A
M
L
K
J
C
D
E
G
F
H
I
A. Instrument Panels H. Side Squeegee
B. Steering Wheel I. Sweeping Brush Access Door
C. Operator Seat J. Side Brush
D. Demister Cover K. Hopper Cover
E. Engine Side Door L. Recovery Tank
F. Rear Squeegee M. Recovery Tank Cover
G. Solution Tank
09078
8400 MM311 (2–94)
9
OPERATION
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CONTROL PANEL SYMBOLS
These symbols identify controls and displays on
the machine:
Hazard Light Engine Water Temperature
Operating Lights Hopper Temperature – Thermo Sentry
Filter Shaker Fuel
Hopper Raise Hourmeter
Hopper Door Close ES
Hopper Lower Detergent Flow
Side Brush Down and On Scrub brush edge clean
Fan Scrub Brushes Down and On
Main Brush Down and Normal Speed Rear Squeegee Down and Vacuum On
Main Brush Down and II Speed Engine
Charging System Horn
Filter Clogged Main Brush Down Pressure Light
10
Recovery Tank Full Main Brush Down Pressure Heavy
Engine Oil Pressure Steering Tilt
8400 MM311 (2–94)
Parking Brake Circuit Breaker 6
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Solution Flow Circuit Breaker 7
Scrub Brush Pressure Circuit Breaker 8
Side Brush Down Pressure Light Circuit Breaker 9
Side Brush Down Pressure Heavy Variable Flow
Circuit Breaker 1 Variable Pressure
OPERATION
Circuit Breaker 2 Gasoline Fuel Only
Circuit Breaker 3 Hydraulic Fluid Only
Circuit Breaker 4 Jackpoint
Circuit Breaker 5
8400 MM311 (2–94)
11
OPERATION
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CONTROLS AND INSTRUMENTS
C
For machines below
serial number 10462
N
TU
V
S
R
GG
O
E
D
F
H
J
L
HH
II
M
G
X
P
Z
Q
I
K
JJ
BB
FF
KK
B
EE
W
Y
AA
A
DD
CC
12
A. Directional Pedal S. Recovery Tank Full Light
10732
B. Brake Pedal T. Fuel Level Gauge
C. Parking Brake Lever U. Hourmeter
D. Hazard Light Switch (Option) V. ES Switch (Option)
E. Operating Lights Switch W. Detergent Flow Switch (Option)
F. Filter Shaker Switch X. Edge Clean Switch
G. Hopper Raise Switch Y. Scrub Brush Switch
H. Hopper Door Switch Z. Squeegee and Vacuum Fan Switch
I. Hopper Lower Switch AA. Engine Speed Switch
J. Side Brush Switch BB.Steering Wheel
K. Vacuum Fan Switch CC. Horn Button
L. Main Brush Normal Speed Switch DD. Ignition Switch
M. Main Brush ll Speed Switch EE. Steering Column Tilt Lever
N. Charging System Light FF. Circuit Breakers
O. Engine Oil Pressure Light GG.Main Brush Down Pressure Knob
P. Engine Water Temperature Light HH. Scrub Brush Down Pressure Knob
Q. Hopper Temperature Light – II. Solution Flow Lever
Thermo Sentry JJ. Engine Choke Knob
R. Clogged Filter Light KK. Parking Brake Pedal
8400 MM311 (4–96)
OPERATION OF CONTROLS
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DIRECTIONAL PEDAL
The directional pedal controls direction of travel
and the propelling speed of the machine. You
change the speed of the machine with the
pressure of your foot; the harder you press the
faster the machine travels.
Forward: Press the top of the directional pedal
with the toe of your foot.
OPERATION
Reverse: Press the bottom of the directional
pedal with the heel of your foot.
Neutral: Take your foot off the directional pedal
and it will return to the neutral position.
07790
07791
8400 MM311 (2–94)
07792
13
OPERATION
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BRAKE PEDAL
The brake pedal stops the machine.
Stop: Take your foot off the directional pedal and
let it return to the neutral position. Step on the
brake pedal.
PARKING BRAKE LEVER
The parking brake lever sets and releases the
front wheel brakes for machines below serial
number 10462.
Set: Move the brake lever from the short to the
long slot with your foot. Step on the brake pedal to
lock the pedal in place.
FOR SAFETY: Before leaving or
servicing machine; stop on level
surface, set parking brake, turn off
machine and remove key.
Release: Step on the brake pedal to release it,
and move the brake lever to the left with your foot
at the same time. Lock the lever in place in the
short slot.
PARKING BRAKE PEDAL
The parking brake pedal sets and releases the
rear wheel brakes for machines serial number
10462 and above.
07754
Set: Press on the brake pedal as far as possible,
then press on the parking brake pedal with the toe
portion of your foot to lock the parking brake pedal
in place.
FOR SAFETY: Before leaving or
servicing machine; stop on level
surface, set parking brake, turn off
machine and remove key.
Release: Press on the brake pedal to unlock the
parking brake pedal.
14
8400 MM311 (4–96)
HAZARD LIGHT SWITCH (OPTION)
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The hazard light switch powers on and off the
hazard light.
On: Press the hazard light switch. The indicator
light above the switch will come on.
Off: Press the hazard light switch. The indicator
light above the switch will go off.
OPERATION
OPERATING LIGHTS SWITCH
The operating lights switch powers on and off
the headlights and taillights.
On: Press the operating lights switch. The
indicator light above the switch will come on.
Off: Press the operating lights switch. The
indicator light above the switch will go off.
FILTER SHAKER SWITCH
The filter shaker switch starts the hopper
dust filter shaker. The shaker automatically
operates for 40 seconds.
Start: Press the filter shaker switch. The indicator
light will remain on while the filter shaker is
operating.
NOTE: The vacuum fan shuts off while the filter
shaker is operating.
09293
09292
HOPPER RAISE SWITCH
The hopper raise switch raises the hopper.
Raise: Press and hold the hopper raise switch.
The indicator light above the switch will come on.
Hold: Release the hopper raise switch.
WARNING: Raised hopper may fall.
engage hopper support bar.
NOTE: The main brush, side brush, and vacuum
fan will stop operating when the hopper is raised.
8400 MM311 (4–96)
09294
09295
15
OPERATION
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HOPPER DOOR SWITCH
The hopper door switch opens and closes the
hopper door. Close the hopper door when
emptying the hopper to control debris and dust.
Open: Press the switch. The indicator light above
the switch will go out.
Close: Press the switch. The indicator light above
the switch will come on.
NOTE: The hopper door opens automatically
when the main brush starts operating, and closes
automatically if the main brush is not operating.
HOPPER LOWER SWITCH
The hopper lower switch lowers the hopper.
Lower: Press and hold the hopper lower switch.
The indicator light above the switch will come on.
Hold: Release the hopper lower switch.
09542
SIDE BRUSH SWITCH
The side brush switch controls the side brush
position and rotation. The main brush must be
operating for the side brush to work.
Down and On: Press the switch. The indicator
light above the switch will come on.
Up and Off: Press the switch again. The indicator
light above the switch will go off.
NOTE: The side brush operates automatically
when the main brush starts operating.
VACUUM FAN SWITCH
The vacuum fan switch starts and stops the
vacuum fan. Do not operate the vacuum fan when
sweeping in wet conditions.
Start: Press the switch. The indicator light above
the switch will come on.
Stop: Press the switch. The indicator light above
the switch will go off.
09543
09544
NOTE: The vacuum fan operates automatically
when the main brush starts operating.
NOTE: The vacuum fan will not operate unless
the main brush is operating.
16
09545
8400 MM311 (4–96)
MAIN BRUSH NORMAL SPEED SWITCH
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The main brush normal speed switch controls
the main brush position, speed, and rotation. Also
the side brush will lower and start, the vacuum fan
will come on, the hopper door will open, and the
engine speed will increase to (Fast). Normal
speed is used for general sweeping.
Down and on: Press the switch. The indicator
light above the switch will come on.
Up and off: Press the switch again. The indicator
light above the switch will go off.
OPERATION
NOTE: Always raise the main brush when the
machine is not being operated for some time. This
prevents the main brush from getting a flat spot.
MAIN BRUSH II SPEED SWITCH
The main brush II Speed switch controls
the main brush position, speed, and rotation. Also
the side brush will lower and start, the vacuum fan
will come on, the hopper door will open, and the
engine speed will increase to (Fast). II Speed is
used for sweeping light litter.
Down and on: Press the switch. The indicator
light above the switch will come on.
Up and off: Press the switch again. The indicator
light above the switch will go off.
NOTE: The main brush II Speed switch can not
be operated while using the scrubbing features. If
the II Speed is operating when the scrub
brushes are started, the machine will
automatically change to main brush normal
speed.
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09558
NOTE: Always raise the main brush when the
machine is not being operated for some time. This
prevents the main brush from getting a flat spot.
CHARGING SYSTEM LIGHT
The charging system light comes on when
the existing voltage potential of the battery is not
within normal range; 10 to 14 Volts. Stop
operating the machine. Locate the problem and
have it corrected.
8400 MM311 (2–94)
09222
17
OPERATION
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ENGINE OIL PRESSURE LIGHT
The engine oil pressure light comes on when
the engine oil pressure falls below 35 kPa (5 psi).
Stop operating the machine. Locate the problem
and have it corrected.
ENGINE WATER TEMPERATURE LIGHT
The engine water temperature light comes on
when the temperature of the engine coolant is
more than 107 C (225 F). Stop operating the
machine. Locate the problem and have it
corrected.
HOPPER TEMPERATURE LIGHT – THERMO
SENTRY
The hopper temperature light comes on when
there is too much heat in the hopper, possibly
from a fire. The Thermo Sentry will stop the
sweeping vacuum fan. Stop operating the
machine. Locate the problem and have it
corrected.
The Thermo Sentry has to be reset manually,
see THERMO SENTRY in MAINTENANCE.
09221
09220
CLOGGED FILTER LIGHT
The clogged filter light comes on when the
hopper dust filter is clogged.
To clean the filter, press the filter shaker switch. If
the clogged filter light remains lit, manually clean
the hopper dust filter. See HOPPER DUST
FILTER in MAINTENANCE.
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09219
09223
8400 MM311 (2–94)
RECOVERY TANK FULL LIGHT
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The recovery tank full light comes on when
the recovery tank is full. The rear squeegee will
raise and the scrubbing vacuum fan will shut off.
OPERATION
FUEL LEVEL GAUGE
The fuel level gauge indicates how much fuel
is in the fuel tank with a segmented LED light.
Gasoline powered machine: When the tank is full,
all ten of the segments are lit. As the fuel tank
empties, the segments shut off. The fuel tank is
empty when all ten of the segments have shut off.
LPG powered machine: When the tank is full,
none of the segments are lit. The last two
segments will flash when the tank is low on fuel or
empty.
HOURMETER
The hourmeter records the number of hours
the machine has been operated. Use this
information to determine machine maintenance
intervals.
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07764
ES SWITCH (OPTION)
The ES switch turns on and off the
extended scrub system. The ES system
automatically comes on when the scrub brushes
start operating, and will remain on till it is shut off
manually.
On: Press the ES switch. The indicator light
above the switch will come on.
Off: Press the ES switch. The indicator light
above the switch goes off.
8400 MM311 (2–94)
07765
09288
19
OPERATION
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DETERGENT FLOW SWITCH (OPTION)
The detergent flow switch starts the
detergent pump for the ES machine.
Start at one-half flow: Press the detergent flow
switch. The left indicator light above the switch
will come on.
Increase to full flow: Press the detergent flow
switch. The right indicator light above the switch
will come on.
Stop: Press the detergent switch flow switch.
Both indicator lights are off.
NOTE: The detergent pump operates
automatically at one-half flow rate when the scrub
brush switch and the solution flow lever are used.
EDGE CLEAN SWITCH
The edge clean switch extends the scrub
head to the right to allow close edge scrubbing.
09291
Out: Press the edge clean switch during normal
scrubbing. The indicator light above the switch will
come on.
In: Press the edge clean switch. The indicator
light above the switch goes off.
SCRUB BRUSH SWITCH
The scrub brush switch controls the scrub
head position and scrub brush rotation. Also the
rear squeegee will lower and the scrubbing
vacuum will come on, the optional ES system
and detergent pump at one-half flow will start, and
the engine speed will increase to (Fast). If the
main brush II Speed is operating when the
scrub brushes are started, the machine will
automatically change to main brush normal
speed.
Down and on: Press the scrub brush switch. The
indicator light above the switch will come on.
Up and off: Press the scrub brush switch. The
indicator light above the switch goes off.
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09290
NOTE: If the II Speed is operating when the
scrub brushes are started, the machine will
automatically change to main brush normal
speed.
NOTE: The scrub head will raise when the
machine is reversed, or stopped for a short time.
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8400 MM311 (2–94)
SQUEEGEE AND VACUUM FAN SWITCH
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The squeegee and vacuum fan switch
controls the position of the rear squeegee, and
starts and stops the scrubbing vacuum fan.
Lower and start: Press the squeegee and
vacuum fan switch. The indicator light above the
switch will come on.
Raise and stop: Press the squeegee and vacuum
fan switch. The indicator light above the switch
goes off. There will be a slight delay before the
vacuum shuts off.
OPERATION
NOTE: The rear squeegee lowers and scrubbing
vacuum starts automatically when the scrub
brushes start operating.
NOTE: The squeegee will raise and the vacuum
will stop when the machine travels in reverse.
ENGINE SPEED SWITCH
The engine speed switch controls engine
governed speed. The two indicator lights above
the switch show the engine speed; Idle or Fast.
Idle: The engine will automatically start in idle
speed. To return the engine to idle from another
engine speed, press the engine speed switch until
the left indicator light comes on.
Fast: Press the engine speed switch and the right
indicator light comes on. This speed is for
sweeping and scrubbing.
NOTE: The engine will automatically operate in
the (Fast) speed when the main brush or scrub
brushes start operating.
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09289
STEERING WHEEL
The steering wheel controls the machine’s
direction. The machine is very responsive to the
steering wheel movements.
Left: Turn the steering wheel to the left.
Right: Turn the steering wheel to the right.
8400 MM311 (2–94)
07801
21
OPERATION
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HORN BUTTON
The horn button operates the horn.
Sound: Press the button.
IGNITION SWITCH
The ignition switch starts and stops the engine
with a key.
FOR SAFETY: When starting machine,
keep foot on brake and directional pedal
in neutral.
Start: Turn the key all the way clockwise.
Release the key as soon as the engine starts.
Stop: Turn the key counter-clockwise.
TURN SIGNAL SWITCH (OPTION)
The turn signal switch operates the turn signals.
Right: Push the switch lever forward.
Left: Pull the switch lever back.
Flashers: Pull out the knob.
STEERING COLUMN TILT LEVER
The steering wheel tilt lever controls the
angle of the steering wheel.
06745
Adjust: Pull out the tilt lever, move the wheel up
or down, and release the tilt lever.
22
8400 MM311 (4–96)
CIRCUIT BREAKERS
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The circuit breakers are resetable electrical circuit
protection devices. Their design stops the flow of
current in the event of a circuit overload. Once a
circuit breaker is tripped, it must be reset
manually. Press the reset button after the breaker
has cooled down.
If the overload that caused the circuit breaker to
trip is still there, the circuit breaker will continue to
stop current flow until the problem is corrected.
The circuit breakers are located in the operator
compartment.
The chart lists the circuit breakers and the
electrical components they protect.
Circuit
Breaker Rating Circuit Protected
CB-1 15 A Ignition
CB-2 15 A Filter shaker, vacuum fan
CB-3 15 A Operating lights
CB-4 15 A Scrubbing
CB-5 15 A Horn
CB-6 10 A Instrument panel
CB-7 15 A Sweeping
CB-8 15 A Hazard light
CB-9 15 A ES
OPERATION
MAIN BRUSH DOWN PRESSURE KNOB
The main brush down pressure knob changes the
amount of contact the main brush has with the
sweeping surface.
Heavy: Turn the main brush down pressure
knob counter-clockwise.
Light: Turn the main brush down pressure
knob clockwise.
8400 MM311 (2–94)
23
OPERATION
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SCRUB BRUSH DOWN PRESSURE KNOB
The scrub brush down pressure knob changes the
pressure of contact the scrub brushes have with
the scrubbing surface.
Increase: Turn the scrub brush down pressure
knob clockwise.
Decrease: Turn the scrub brush down pressure
knob counter-clockwise.
SIDE BRUSH DOWN PRESSURE KNOB
The side brush down pressure knob changes the
side brush contact with the sweeping surface.
Heavy: Turn the side brush down pressure
knob counter-clockwise.
Light: Turn the side brush down pressure
knob clockwise.
SOLUTION FLOW LEVER
The solution flow lever controls the flow of
solution to the floor.
Start: Push the lever forward. To increase the
solution flow, continue pushing the lever forward.
Stop: Pull the lever all the way back.
ES mode: The solution lever also starts and
stops the detergent pump.
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8400 MM311 (2–94)
LATCHES
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The side doors, engine cover, seat access cover,
and recovery tank cover are secured with latches.
Open the main brush side doors: Push down on
the door latch.
Open the engine side door: Push in the door
latch.
Open the demister cover: Push in on the cover
latch.
Open the recovery tank cover: Push in the cover
latch.
ENGINE CHOKE KNOB
The engine choke knob controls the engine
choke on gasoline powered machines.
On: For cold starting, pull the engine choke
knob out.
OPERATION
Off: Push the engine choke knob in.
8400 MM311 (2–94)
25
OPERATION
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OPERATOR SEAT
The operator seat is a fixed back style with a
forward-backward adjustment.
Adjust: Pull the lever out, slide the seat backward
or forward to the desired position and release the
lever.
Lift: Pull up on the seat mounting plate until the
seat mount locks up.
Lower: Pull on the release lever and lower the
seat mounting plate.
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HOPPER SUPPORT BAR
The hopper support bar is located on the
operator’s side of the hopper. The hopper support
bar holds the hopper in the raised position to allow
work under the hopper. DO NOT rely on the
machine hydraulic system to keep the hopper
raised.
WARNING: Raised hopper may fall.
Engage hopper support bar.
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07803
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8400 MM311 (2–94)
HOW THE MACHINE WORKS
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The steering wheel controls the direction of
machine travel. The directional pedal controls the
speed and forward/reverse direction. The brake
pedal slows and stops the machine.
The side brush sweeps debris into the path of the
main sweeping brush. The main brush sweeps
debris from the floor into the hopper. The vacuum
system pulls dust and air through the hopper and
the hopper dust filter.
Water and detergent from the solution tank flows
to the floor through a solution valve to the scrub
brushes. The brushes scrub the floor. As the
machine is moved forward the squeegee wipes
the dirty solution off the floor, which is then picked
up and drawn into the recovery tank.
When using the ES mode, the dirty solution in
the recovery tank is filtered and returned to the
solution tank to be reused.
OPERATION
When sweeping and scrubbing is finished, clean
the hopper dust filter, empty the hopper, and drain
and clean the recovery tank. If using the ES
system, drain and clean the solution tank, and
clean the ES filter.
PRE-OPERATION CHECKLIST
Check under the machine for leaks (fuel, oil,
coolant, scrubbing solution).
07807
8400 MM311 (2–94)
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