American-Lincoln 7760 User manual

AMERICAN-LINCOLN 1-1
7760
American-Lincoln
Form Number OM28600396 2006 English/Revised
®
All directions given in this book are as seen from the operator's position at the rear of the machine.
READ THIS BOOK
This book has important information for the use and safe operation of this machine. Failure to read this book prior to
operating or attempting any service or maintenance procedure to your machine could result in injury to you or to other
personnel; damage to the machine or to other property could occur as well. You must have training in the operation of
this machine before using it.
Operator's Manual
7760
Sweeper/Scrubber

1-2 AMERICAN-LINCOLN
7760
TABLE OF CONTENTS - OPERATIONS
SPECIFICATIONS ...................................................................................................................... 4
MACHINE DIMENSIONS ............................................................................................................. 6
MACHINE OPERATION .............................................................................................................. 7
SAFETY INSTRUCTIONS .......................................................................................................... 8
OPERATION OF CONTROLS AND GAUGES............................................................................ 9
IGNITION SWITCH .............................................................................................................. 9
LIGHT SWITCH .................................................................................................................. 9
TURN SIGNAL (OPTION) ................................................................................................... 10
GLOW PLUG SWITCH ....................................................................................................... 10
HORN PUSH BUTTON ....................................................................................................... 10
SIDE BROOM LIFT ............................................................................................................ 10
MAIN BROOM SWITCH ...................................................................................................... 11
SIDE BROOM SWITCH ...................................................................................................... 11
DUST CONTROL SWITCH ................................................................................................. 11
FILTER SHAKER SWITCH ................................................................................................. 11
WATER TEMPERATURE GAUGE ...................................................................................... 12
HOUR METER .................................................................................................................... 12
FUEL GAUGE ..................................................................................................................... 12
OIL PRESSURE GAUGE .................................................................................................... 12
VOLT METER ..................................................................................................................... 12
SCRUB BRUSHES SWITCH ............................................................................................... 12
BRUSH ROTATION SWITCH .............................................................................................. 13
BRUSH PRESSURE SWITCH ............................................................................................. 13
SQUEEGEE BLADE SWITCH ............................................................................................ 13
HIGH RECOVERY WARNING LIGHT ................................................................................. 13
LOW SOLUTION WARNING LIGHT.................................................................................... 13
HOPPER LIFT .................................................................................................................... 14
HOPPER SAFETY LOCK ARM .......................................................................................... 14
HOPPER DUMP DOOR ...................................................................................................... 14
MANUAL DUMP HOPPER ................................................................................................... 14
SOLUTION CONTROL ....................................................................................................... 14
SWEEPING BROOM LIFT CONTROL ............................................................................... 14
THROTTLE ........................................................................................................................15
CHECK ENGINE LIGHT ...................................................................................................... 15
PARKING BRAKE ............................................................................................................... 15
FOOT BRAKE .................................................................................................................... 15
ACCELERATOR & DIRECTIONAL CONTROL PEDAL ...................................................... 16
BACK-UPALARM SWITCH ................................................................................................ 16
SEATADJUSTMENT .......................................................................................................... 16
ESP SYSTEM OPERATING INSTRUCTIONS ............................................................................ 17
ESP RECYCLING CONTROL PANEL ................................................................................ 17
ESP RECYCLING SYSTEM ON/OFF SWITCH .................................................................. 17
SOLUTION HIGH WARNING LIGHT.................................................................................... 17
DETERGENT LOW WARNING LIGHT ............................................................................... 17
DETERGENT FLOW KNOB ............................................................................................... 17
THE SCRUBBING SYSTEM - HOW IT WORKS ................................................................. 18
NON-RECYCLING SCRUBBING SYSTEM - HOW IT WORKS ........................................... 18
RECOVERY OR ESP SYSTEM - HOW IT WORKS ........................................................... 19
THE SWEEPING & DUST CONTROL SYSTEM - HOW IT WORKS .................................. 20

AMERICAN-LINCOLN 1-3
7760
TABLE OF CONTENTS
OPERATING INSTRUCTIONS .................................................................................................... 21
FILLING THE SOLUTION TANK - NON-RECYCLING (STANDARD) .................................. 21
FILLING THE SOLUTION TANK - ESP ............................................................................... 21
PRE-START CHECKLIST................................................................................................... 22
BEFORE STARTING THE ENGINE .................................................................................... 22
STARTING THE ENGINE .................................................................................................... 22
POST-START CHECKLIST ................................................................................................ 22
TRANSPORTING THE MACHINE ....................................................................................... 22
BEGINNING THE CLEANING OPERATION ........................................................................ 22
HELPFUL HINTS FOR CLEANING OPERATION ................................................................ 23
POST-OPERATION & CLEAN-UP INSTRUCTIONS ................................................................... 24
ENDING THE CLEANING OPERATION .............................................................................. 24
POST-OPERATION CHECKLIST ....................................................................................... 24
DRAINING THE SOLUTION TANK ...................................................................................... 24
CLEANING THE SOLUTION TANK ..................................................................................... 24
DRAINING THE RECOVERY TANK .................................................................................... 24
CLEANING THE RECOVERY TANK ................................................................................... 25
EMPTYING THE DEBRIS HOPPER - VARIABLE DUMP .................................................... 25
TOWING INSTRUCTIONS .................................................................................................. 25
ORDERING PARTS.................................................................................................................... 26

1-4 AMERICAN-LINCOLN
7760
SPECIFICATIONS
DIMENSIONS
Length 107.0” - 271.8 cm
Width 59.0” - 149.9 cm
Height 61.5” - 156.2 cm
Wheel Base 56.4” - 143.2 cm
Height with Guard 85.5” - 217.2 cm
DRIVES
Propelling Variable Displacement Pump - Hydraulic Drive Motor
Sweeping (1) Hydraulic Motor
Scrubbing (3) Hydraulic Motors
Vacuum - Water Pick Up (1) Hydraulic Motor
HYDRAULIC CONTROL
Single Foot Pedal Controls Forward, Neutral, Reverse & Dynamic Braking.
All Electro-Hydraulic Controls To Both Sweeping And Scrubbing Functions.
MECHANICAL SYSTEM
Steering Power Steering with Rack and Pinion Gear
Brakes Parking/Foot Operated and Locked Disc Brakes
Brooms Lift and Height Adjustment
SWEEPING SYSTEM
Type Direct Throw
Hopper 1200 lb. (545 kg) capacity (Variable Dump)
400 lb. (181 kg) capacity (Manual Dump)
Main Broom 50” Long x 14” Diameter (127 cm x 35.6 cm)
3.25” (8.3 cm) Bristle Length
Features broom lift & adjustable broom height for wear
compensation, standard poly-fiber broom, Quick-Change
System.
BRUSHES & SQUEEGEE
Brushes (3) 17.88” (45.4 cm) Diameter Poly-Fiber Discs
Squeegees (1) 62” (157.48 cm) Wide Contoured Rear Swing Squeegee
(2) 29” (73.7 cm) Floating Side Squeegees, One On Either
Side Of the Scrubbing Compartment
TANK CAPACITY (Standard)
100 Gallon (378.5 Liters) Solution Tank
100 Gallon (375.5 Liters) Recovery Tank
TANK CAPACITY (ESP System)
Interconnected Tanks Provide A Total Camel System Capacity
Of 190 Gallons (719 Liters) Along With 5 Gallons (18.9 Liters) Of
Detergent.
FUEL SYSTEM
Engine Cooling System Radiator and Hoses (Approximately) 3 Quarts (2.8 Liters)
Gas/LP System Total 6.75 Quarts - 6.4 Liters
Diesel System Total 6.6 Quarts - 6.2 Liters
Gas, Diesel Fuel Tank 9.7 Gallons - 36.71 Liters
LPG Tank 33 Pounds
Engine Oil System
Gas and LPG 4 Quarts - 3.8 Liters
Diesel 5 Quarts - 4.7 Liters
Hydraulic System
Total System 11 Gallons - 41.6 Liters

AMERICAN-LINCOLN 1-5
7760
SPECIFICATIONS
SWEEPING WIDTH 50” (125.0 cm) Sweeping
60” (152.4 cm) Sweeping With Side Broom
SCRUBBING WIDTH 54" (137 cm) Provided By (3) 17.88” (45.4 cm)
Diameter Disc Brushes
SPEEDS
Maximum Travel 7 mph - 11.3 km/hr.
Recommended Maximum
Sweeping And
Scrubbing Speed 4 mph - 6.4 km/hr.
TURNING RADIUS
Left 82” - 208.3 cm
Right 82” - 208.3 cm
Minimum Aisle Width
for 180° Turn 120” - 305 cm
WEIGHTS
7760 Variable Dump Manual Dump
Net 4150 lb. - 1882 kg 3700 lb. - 1678 kg
Shipping w/Crate 4600 lb. - 2087 kg 4150 lb. - 1882 kg
ENGINE DATA
Ford LRG 425EFI
Bore and Stroke 3.78” x 3.40” (96.0 mm x 86.3 mm)
Oil Capacity 4.5 quarts (4.3 liters) (including filter)
Displacement 4 cylinders (2.5 liters) (153 CID)
Fuel 87 A.K.I. (Standard Unleaded Gasoline)
HD-5 for LP versions
Mitsubishi S4Q2 Diesel
Bore and Stroke 3.46" x 4.06” (88 mm x 103 mm)
Oil Capacity 7.2 quarts (7 liters) -Oil pan / 8.4 quarts (8 liters) - Complete system
Displacement 4 cylinders (2.5 Liters) (153 cu. in.) (122 CID)
Fuel ASTM No. 2-D
High temperature/low pressure sensors with engine shutdown are standard on both the Ford 425 and
Mitsubishi S4Q2.

1-6 AMERICAN-LINCOLN
7760
85.5"
217.2 cm.
61.5"
156.2 cm.
54.5"
138.4 cm.
92.0"
233.7 cm.
60.0"
157.5 cm.
56.4"
143.2 cm.
107"
271.8 cm.
27.0"
68.6 cm.
27.4"
69.5 cm.
27.4"
69.5 cm.
59.0"
149.9 cm.
MACHINE DIMENSIONS

AMERICAN-LINCOLN 1-7
7760
MACHINE OPERATION
FIGURE 1
YOUR 7760 MACHINE HAS BEEN SHIPPED COMPLETE, BUT DO NOT ATTEMPT TO OPERATE WITHOUT
FOLLOWING THESE INSTRUCTIONS.
PREPARING THE MACHINE FOR OPERATION
1. Connect and tighten battery cables.
2. Fill the tank with REGULAR GRADE unleaded gasoline; Diesel fuel if equipped with diesel engine.
WARNING
Never fill tank while engine is running. Always be sure fuel container and sweeper are
electrically connected before pouring fuel. This can easily be done by permanently attaching one
end of an insulated wire to the container with battery clip on the opposite end.
3. Check engine crankcase oil level. Although properly lubricated at factory, check before starting engine. No
special brand oil is used. Recommended number of operating hours before the initial oil change is the same
as normal. See Maintenance.
4. Check radiator coolant level. Permanent type antifreeze is added at the factory to provide protection to
approximately -35° F (37° C). To retain this protection level, always mix 1 part water to 1 part antifreeze.
5. Check oil level in the hydraulic reservoir located at center of machine beside the engine. Oil fill level should
be two (2) inches (5 cm.) below filler neck assembly. If oil is required, add HYDRAULIC FLUID ONLY,
automatic transmission fluid FORD type “F”. After the first 50 operating hours, service must be performed
on your engine to insure future high performance and trouble-free operation. See Maintenance.

1-8 AMERICAN-LINCOLN
7760
SAFETY INSTRUCTIONS
WARNING
FOR SAFETY, OBSERVE THE FOLLOWING WARNINGS. FAILURE TO COMPLY MAY CREATE A SERIOUS
RISK OF INJURY TO YOU AND OTHERS. THIS MACHINE SHOULD NOT BE USED IN HAZARDOUS
LOCATIONS, INCLUDING AREAS OF VOLATILE DUST OR VAPOR CONCENTRATIONS.
Operators must be trained and qualified to operate this machine. They must also understand the
operator’s manual before starting.
Use caution when mounting or dismounting the machine particularly on wet, slippery surfaces.
Operate only from the designated operator’s position. Stay inside the body of the machine. Keep
hands and feet on the designated controls. Always operate in well-lighted areas.
Do not dump the hopper over an open pit or dock. Do not dump the hopper when positioned on a
grade (ramp). The machine must be level (horizontal).
Exhibit extreme caution when negotiating, turning and traveling across grades or ramps.
Start, stop, change direction, travel and brake smoothly. Slow down when turning.
Avoid uneven surfaces and loose materials.
Watch out for obstructions, especially overhead.
Do not carry passengers on the machine.
Set parking brake when leaving the machine. Chock (block) the wheels if the machine is to
be parked on a grade (ramp), or when working on it.
Never leave the operator’s seat with the engine running.
Report damage or faulty operation immediately.
Do not operate the machine until repairs have been completed.

AMERICAN-LINCOLN 1-9
7760
BRUSH ROTATION SWITCH
SQUEEGEE SWITCH
SCRUB BRUSH LIFT SWITCH
BRUSH PRESSURE SWITCH
HIGH RECOVERY
WARNING LIGHT
LOW SOLUTION
WARNING LIGHT
HOPPER LIFT
HOPPER DUMP DOOR
SOLUTION HIGH LIGHT
RECYCLING SYSTEM SWITCH
DETERGENT LOW LIGHT
DETERGENT FLOW KNOB
SWEEPING BROOM
LIFT CONTROL
SOLUTION CONTROL
TURN SIGNAL
CHECK ENGINE LIGHT (GAS/LP)
PARKING BRAKE
MAIN BROOM SWITCH
SIDE BROOM SWITCH
DUST CONTROL SWITC
H
FILTER SHAKER SWITCH
IGNITION SWITCH
LIGHT SWITCH
GLOW PLUG SWITCH
(DIESEL ONLY)
SIDE BROOM LIFT
HORN PUSH BUTTON
FOOT BRAKE
BACKUP ALARM SWITCH
ACCELERATOR &
DIRECTIONAL
CONTROL PEDAL
SEAT ADJUSTMENT
WATER TEMPERATURE GAUGE
HOUR METER
FUEL GAUGE
OIL PRESSURE GAUGE
VOLT METER
THROTTLE
GAS/LP
DIESEL
P-5101ecp FIGURE 2
IGNITION SWITCH
The keyed ignition switch is located to the right of the steering column on the front face of the instrument console.
It has four positions.
1. The key turned to the center “OFF” position will shut off the engine. The following items can be activated in
the “OFF” position.
(A.) Horn
(B.) Light Options
3. The key turned to the right “IGN/ON” position will allow all the following items to be activated (but will NOT
start the engine):
(A) Horn
(B) Light Options
(C) Turn Signals
(D) Instrument Panel Gauges
4. The key turned to the far right “START” position will start the engine. This position is a momentary position.
The key will revert to the “IGN/ON” position when it is released.
LIGHT SWITCH
The light switch is located above the horn button to the right of the steering wheel. It will work various light options
that are available for this machine, such as:
* HEAD LIGHTS
* TAIL LIGHTS
* INSTRUMENT LIGHTS
All gauges, with the exception of the hour meter, can have an optional internal instrument light.
OPERATIONS OF CONTROLS AND GAUGES

1-10 AMERICAN-LINCOLN
7760
OPERATIONS OF CONTROLS AND GAUGES
IGNITION
LIGHTS
HORN
SIDE
BROO
M
LIFT
GLOW PLUG
SWITCH
(DIESEL ONLY)
P-4853ecp FIGURE 3
GLOW PLUG SWITCH (Diesel)
Under no circumstances should any other unauthorized starting aids be used at the same time as Glow Plugs. The
Glow Plug Switch is located to the right of the steering column on the front face of the instrument console. Use the
following procedure to operate:
1. Before operating the starter motor, press the “GLOW PLUG” button for 20 to 30 seconds.
2. With the “GLOW PLUG” button still depressed, engage the starter motor until the engine starts.
3. Continue to press the “GLOW PLUG” button for a few seconds after the engine has started until even
running has been obtained.
4. If the engine does not start, disengage the starter motor, but keep the “GLOW PLUG” button depressed
for an additional 10 to 15 seconds. Keep the Glow Plugs energized while starting the engine and for a few
seconds after the engine has been running smoothly.
HORN PUSH BUTTON
The horn button is located to the right of the steering column on the front face of instrument console. The horn
button is always active. Push the horn button to sound the horn.
SIDE BROOM LIFT (OPTIONAL FOR MANUAL DUMP)
The Side Broom Lift Lever is located to the right of the instrument console. The handle pulled back and turned to
the right will raise the side broom and lock it into position.
4-WAY TURN SIGNAL (Option)
The turn signal option is located on the steering column and works as automotive turn signals work, forward on the
lever for right and back on the lever for left. The 4-way flasher will activate when the turn signal lever is pulled out.

AMERICAN-LINCOLN 1-11
7760
OPERATIONS OF CONTROLS AND GAUGES
DUST
C
ONTROL
MAIN
BROOM
SIDE
BROOM
FILTER
SHAKE
R
SWEEPING
SIDE
BROOM
MAIN
BROOM
ON
OFF
ON
OFF
FILTER
SHAKER
DUST
CONTROL
P-4862 FIGURE 4
MAIN BROOM SWITCH
The Main Broom Switch is located on the console to the right of the steering wheel in the SWEEPING section. This
switch will activate the Main Broom. This switch has two positions “ON” and “OFF”. See Sweeping Broom Lift
Control.
SIDE BROOM SWITCH (Option For Manual Dump Machines)
The Side Broom Switch is located on the console to the right of the steering wheel in the SWEEPING section. This
switch will activate the Side Broom. This switch has two positions “ON” and “OFF”. See Side Broom Lift Control.
DUST CONTROL SWITCH (Wet Sweep Bypass Option - Option for Manual Dump Machine)
The Dust Control Switch is located on the console to the right of the steering wheel in the SWEEPING section. This
switch will activate the dust control system.
FILTER SHAKER SWITCH (Variable Dump Machines Only)
The Filter Shaker Switch is located on the console to the right of the steering wheel in the SWEEPING section.
NOTE - (Variable Dump Machines Only)
THE MAIN BROOM SWITCH MUST ALWAYS BE PLACED IN THE OFF POSITION BEFORE SHAKING THE
FILTER. FAILURE TO DO SO WILL RESULT IN DUST REMAINING ON THE SURFACE OF THE FILTER
ENVELOPES INSTEAD OF DROPPING INTO THE HOPPER.
The button can be used when the ignition key is in the “ignition” position. The filter shaker control button is used
during the sweeping cycle and the hopper unloading cycle. Use the filter shaker control switch to remove dust from
the filter. Use the following procedures to operate the filter shaker control switch:
1. After the machine has made a long sweeping run, turn the broom switch to the “OFF” position.
2. Push the filter shaker control switch for 5 to 15 seconds to allow the filter to unload.
3. Turn the broom switch to the “ON” position. Repeat this procedure after each long sweeping run.
NOTE - (Variable Dump Machines Only)
The main broom, side broom, dust control and filter shaker turn off automatically when the hopper is
dumping and/or the dump door is in a closed position. SEE HOPPER LIFT and HOPPER DUMP DOOR.

1-12 AMERICAN-LINCOLN
7760
OPERATIONS OF CONTROLS AND GAUGES
HOURMETER OIL PRESSURE
FUEL GAUGE VOLTMETER
WATER TEMPERATURE
WATER
TEMP
100
170
°F 195 220
280
77 91104
138
°C
0
1/4 1/2
FUEL BATTERY
10
12 14
16
-+
HOURS
00
001
1/10
PSI
0
20 40 60
80
278
553
kPa
OIL
PRESS
P-4865 FIGURE 5
WATER TEMPERATURE GAUGE
The Water Temperature Gauge is located on the console panel above the steering wheel in the gauge cluster. The
gauge is mechanical and activated by a sender in the engine. It displays the engine coolant temperature in farenheight.
HOUR METER
The Hour Meter is located on the console panel above the steering wheel in the gauge cluster. This meter is
activated when theengine begins running. The meter indicates actual “run” time of the machine. The meter can used
to determine machine maintenance intervals.
FUEL GAUGE
The Fuel Gauge is located on the console panel above the steering wheel in the gauge cluster. This gauge indicates
the level of fuel contained in the fuel tank.
OIL PRESSURE GAUGE
The Oil Pressure Gauge is located on the console panel above the steering wheel in the gauge cluster. The gauge
is mechanical and activated by a sender in the engine. It displays the engine oil pressure in PSI.
VOLT METER
The Volt Meter is located on the console panel above the steering wheel in the gauge cluster. The gauge indicates
the charge level of the battery.
SCRUB BRUSHES SWITCH
The Brushes Switch is located on the console to the left of the steering wheel in the “SCRUBBING” section. This
switch in the position marked “LOWER” will lower the scrub brush deck and activate the three scrub brushes. The
Brush Rotation Switch and the Brush Pressure Switch can not be activated unless this switch is in the “LOWER”
position. This switch in the “RAISE” position will stop the brushes from rotating and raise the scrub brush deck.

AMERICAN-LINCOLN 1-13
7760
HIGH
RECOVERY
LOW
SOLUTION
SCRUB
BRUSHES
SQUEEGEE
BLADE
BRUSH
PRESSURE BRUSH
ROTATION
LOWER
RAISE
NORMAL
HEAVY REVERSED
SCRUBBING
SQUEEGEE
BLADE LIFT
SCRUB BRUSH
LIFT
BRUSH
ROTATION
BRUSH
PRESSURE
RECOVERY HIGH
WARNING LIGHT
LOW SOLUTION
WARNING LIGHT
P-4854 FIGURE 6
OPERATIONS OF CONTROLS AND GAUGES
BRUSH ROTATION SWITCH
The Brush Rotation Switch is located on the console to the left of the steering wheel in the “SCRUBBING” section.
This switch reverses the rotation of the scrub brushes. This switch has two positions, “NORMAL” and “REVERSED”.
This switch can not be activated unless the Scrub Brush Lift Switch is in the “LOWER” position. The switch will light
when activated.
BRUSH PRESSURE SWITCH
The Brush Pressure Switch is located on the console to the left of the steering wheel in the “SCRUBBING” section.
This switch applies additional downward pressure to the scrub brushes. This switch has two positions, “NORMAL”
and “HEAVY”. This switch can not be activated unless the Scrub Brush Lift Switch is in the “LOWER” position. The
switch will light when the switch can be activated.
SQUEEGEE BLADE SWITCH
The Squeegee Blade Switch is located on the console to the left of the steering wheel in the “SCRUBBING” section.
This switch in the position marked “LOWER” will lower the squeegee and activate the squeegee vacuum. This
switch in the “RAISE” position will stop the squeegee vacuum and raise the squeegee. A switch activated by the
forward-reverse foot pedal will automatically raise the squeegee if it is in the lowered position and the machine is in
reverse.
HIGH RECOVERY WARNING LIGHT
The High Recovery Warning Light is located on the console to the left of the steering wheel beside the
“SCRUBBING” section. The recovery warning light will illuminate approximately 5 minutes before the recovery tank
is full, giving ample time to complete the scrubbing cycle before the mechanical float shuts off the vacuum to the
recovery tank.
LOW SOLUTION WARNING LIGHT
The Low Solution Warning Light is located on the console to the left of the steering wheel beside the “SCRUBBING”
section. The Solution Warning Light will illuminate when the solution tank is empty, marking the end of the
scrubbing cycle.

1-14 AMERICAN-LINCOLN
7760
HOPPER LIFT - (Variable Machines Only)
The Hopper Lift Lever is located to the left of the steering wheel on the left side of the driver compartment. This
lever, which is marked “HOPPER”, raises and lowers the debris hopper to ease unloading.
WARNING
The hopper may drop unexpectedly and cause injury, always engage the safety arm before working
under the hopper.
HOPPER DUMP DOOR - (Variable Dump Machines Only)
The Hopper Dump Door Lever is located to the left of the steering wheel on the left of the driver compartment. This
lever opens and closes the hopper door. This lever is located below the Hopper Lift Door and is marked “DUMP
DOOR”.
MANUAL DUMP HOPPER - (Manual Dump Hopper Only)
The Manual Dump Hopper Lever is located under the front bumper. To dump debris, pull the manual dump lever all
the way to the position marked open. Leave the handle in the dump position and back the machine off the pile of
debris. When clear of the debris, pull the manual dump lever to the position marked closed.
SOLUTION CONTROL
To apply solution to the scrubbing brushes, push the solution control lever forward until the desired setting is
reached. The solution rate is continuously variable from off to approximately 1-3/4 GPM at low and 3-1/2 GPM at
high. To stop application of solution, pull back on the lever until it stops at the “off” position. The solution warning
light will illuminate when the solution tank is empty, marking the end of the scrubbing cycle.
NOTE
For best results, discontinue application of solution 10
feet before stopping or making a 90° or 180° turn.
SWEEPING BROOM LIFT CONTROL
The main broom lift control is located to the left of the driver seat.
To lower the main broom, grasp the lever and pull back to clear
the locking notch. Move the lever forward to the first or second
notch in the elongated slot. The first notch, “SWEEP”, is for
normal sweeping (2 to 3 inch [5 to 8 cm.] broom pattern). The
second notch, “FLOAT”, is for heavy sweeping (4 to 5 inch [10 to
13 cm.] broom pattern).
To raise the main broom, pull the lever back and slide into the
locking notch. You may operate the main broom in either the
“SWEEP” or “FLOAT” position. However, the “SWEEP” position
should be used for normal sweeping and will result in increased
broom life. The “FLOAT” position should be used only when sweep-
ing extremely uneven areas.
NOTE - (Variable Dump Machines Only)
A switch triggered by the hopper and dump door position
controls the sweeping functions, main broom, side
broom, dust control, and filter shaker. The hopper must
be down and the dump door open before these functions
will work.
LOWER
RAISE
HOPPER
OPEN
CLOSE
DUMP
DOOR
HIGH
FLOAT
EEP
UP
LOW
OFF
SWEEPING SOLUTION
CONTROL
HOPPER
LIFT
DUMP DOOR
OPEN
MAIN BROOM
LIFT
SOLUTIO
N
CONTROL
P-4851 FIGURE 7
OPERATIONS OF CONTROLS AND GAUGES
HOPPER SAFETY LOCK ARM (Variable Dump Only)
WARNING
When the hopper is raised the safety arm must be engaged before any work is done under the hopper
The Hopper Safety Lock Arm is located under the hopper assembly. After the work is complete, the safety arm
must be disengaged.

AMERICAN-LINCOLN 1-15
7760
THROTTLE CONTROL
The throttle control is located on the left side console. Gas and LP equipment have a throttle switch. Diesel
versions have a lever. To operate the diesel: For full throttle, grasp the lever and push up and right to the locking
notch. To reduce to idle, grasp the lever and push it up and to the left (away from the locking notch). Let the
lever lower until it rests at the bottom of the slot. “Load” (brooms and/or brushes and/or dust control operating)
and “No Load” (brooms, brushes & dust control off) RPMs are the same for gas and LP equipment; The will be a
slight drop between “Load” and “No Load” RPMs with diesels. Always return the throttle switch/lever to the
idle position before turning off the key to stop the engine.
CHECK ENGINE LIGHT (MIL) - Gas, LP Only
The check engine light (MIL) is located on the left side console. If the light comes on, it indicates a problem
with the engine. Flip the switch located on/near the air cleaner bracket in the engine compartment and count the
number of times the panel light flashes, then go to the “Check Engine Light Codes” pages in the machine
Service & Troubleshooting Guide to determine the problem.
PARKING BRAKE
The parking brake lever is located in the left side of the driver compartment floor. This lever, when raised to the
upright position, will “lock” the foot brake pedal in the down position.
FOOT BRAKE
The foot brake pedal is located to the right of the steering column on the floor of the driver compartment. The foot
brake on the front wheels is a mechanical system actuated by the brake pedal.
PARKING BRAKE
LOCKED
POSITION
P-4888 FIGURE 8 P-4887 FIGURE 9
OPERATIONS OF CONTROLS AND GAUGES
MACHINE RPMs
IDLE “NO LOAD”
SWEEPER/ Gas/LP 950 2050
SCRUBBER (1 speed) Diesel 950 2150
SWEEPER Gas/LP 1st 950 2050
(2 speed levels) 2nd 950 2450
Diesel 1st 950 2150
2nd 950 2550

1-16 AMERICAN-LINCOLN
7760
P-4690 FIGURE 10
REVERSE
F
O
RWARD
OPERATIONS OF CONTROLS AND GAUGES
ACCELERATOR & DIRECTIONAL CONTROL PEDAL
The accelerator and directional control pedal is located on the floor of the driver compartment, to the right of the
brake pedal. The accelerator and directional control pedal controls machine direction and travel speed.
1. Put foot pressure on the upper portion of the pedal. The machine will move forward.
2. Increase the foot pressure on the upper portion of the pedal to increase the forward speed.
3. Put foot pressure on the lower portion of the pedal. The machine will move in reverse.
4. Increase the foot pressure on the lower portion of the pedal to increase the reverse speed.
5. To stop the machine, put light foot pressure on the opposite end of the accelerator and directional control
pedal. If the machine is moving forward put light foot pressure on the lower portion of the pedal. If the
machine is moving in reverse put light foot pressure on the upper portion of the pedal.
BACKUP ALARM SWITCH
This switch is located under the lower section of the accelerator and directional control pedal and operates the
backup alarm. The alarm makes a loud audible noise when the machine is being driven in reverse.
SEAT ADJUSTMENT
This lever is located on the right of the seat. This lever allows the seat to be adjusted forward or back when the lever
is moved.

AMERICAN-LINCOLN 1-17
7760
SOLUTION HIGH
WARNING LIGHT
DETERGENT
FLOW KNOB
RECYCLING SYSTEM
ON/OFF SWITCH
DETERGENT LOW
WARNING LIGHT
ON
OFF
P-4895 FIGURE 11
SCRUBBING SYSTEM OPERATING INSTRUCTIONS
THE ESP RECYCLING CONTROL PANEL
THE ESP RECYCLING SYSTEM ON/OFF SWITCH
This switch turns the ESP recycling system on and off.
SOLUTION HIGH WARNING LIGHT
The solution high warning light will come on if the solution tank is too full of water from the recycling system.
DETERGENT LOW WARNING LIGHT
The detergent light will illuminate when the detergent tank is low, warning the operator to add detergent.
DETERGENT FLOW KNOB
This rotary knob controls the detergent flow into the scrubbing solution. The operator may choose from any
detergent setting, for light to heavy cleaning applications. The detergent light will illuminate when the detergent
tank is low, warning the operator to add detergent.

1-18 AMERICAN-LINCOLN
7760
RECOVERY
TANK
RECOVERY
TANK
RECOVERY
TANK
RECOVERY
TANK
SOLUTION
TANK
SOLUTION
TANK
SOLUTION
TANK
DETERGENT
TANK
DETERGENT
TANK
BAFFLE
NON-RECYCLING
NON-RECYCLING
RECYCLING
RECYCLING
SOLUTION
TANK RECOVERY
TANK
FILTER
FLOW VALVE
ORIFICE
AUTOFIL VALVE
CHECK
VALVE
SCRUB
BRUSH SQUEEGEE
FILL COUPLING
FLOOR CONTACT
FILTER
SOLUTION
PUMP
SEPARATOR
DETERGENT
PUMP
DETERGENT
TANK
P4759a
P-4795 FIGURE 13
P-4759a FIGURE 14
SOLUTION
LINE
SOLUTION
LINE
SOLTUION
TANK
SOLTUION
TANK
RECOVERY
TANK
RECOVERY
TANK
VACUU
MVACUUM
SCRUBBING
BRUSHES
SCRUBBING
BRUSHES
P-5103 FIGURE 15
SCRUBBING SYSTEM OPERATING INSTRUCTIONS
THE SCRUBBING SYSTEM - HOW IT WORKS
There are two scrubbing systems available for the 7760 machine, the non-recycling or standard scrubbing system
and the recycling or ESP scrubbing system.
THE NON-RECYCLING OR STANDARD SCRUBBING SYSTEM - HOW IT WORKS
During the scrubbing process (shown in Figure 14), detergent solution water from the solution tank is fed to the
solution line. There it is fed to the floor where three disc scrubbing brushes work to dislodge soil.
After scrubbing, the dirty solution is vacuumed from the floor and discharged into the containment chamber in the
forward portion of the recovery tank, where a system of baffles helps to clarify the solution. Sensors in each tank will
indicate by lights on the control panel when the water in the solution tank is too low or when the water in the
recovery tank is too high.

AMERICAN-LINCOLN 1-19
7760
RECOVERY
TANK
RECOVERY
TANK
RECOVERY
TANK
RECOVERY
TANK
SOLUTION
TANK
SOLUTION
TANK
SOLUTION
TANK
DETERGENT
TANK
DETERGENT
TANK
BAFFLE
NON-RECYCLING RECYCLING
P-4795-1 FIGURE 16
THE RECOVERY OR ESP SCRUBBING SYSTEM - HOW IT WORKS
During the scrubbing process (shown in Figure 16), filtered water from the solution tank is fed to the solution line,
where it combines with detergent from the metering pump. This mixture is then fed to the floor where three disc
scrubbing brushes work to dislodge soil.
After scrubbing, the dirty solution is vacuumed from the floor and discharged into the containment chamber in the
forward portion of the recovery tank, where a system of baffles helps to clarify the solution on its way to the
pumping chamber in the rear of the recovery tank. At intervals, a system of sensors activates the recycling pump,
which sends filtered solution from the pumping chamber on its way to the solution tank. Here, it is ready to be
mixed with fresh, metered detergent and repeat the cycle.
SCRUBBING SYSTEM OPERATING INSTRUCTIONS

1-20 AMERICAN-LINCOLN
7760
THE VARIABLE DUMP SWEEPING AND DUST CONTROL SYSTEMS - HOW THEY WORK
Variable Dump 7760 machines are equipped with a sweeping and dust control system. Figure 18 shows the
highest position for the variable dump.
The debris from sweeping is thrown into the hopper (Figure 19). The baffle system that is built into the variable dump
debris hopper is designed to minimize dust in the air while the machine is sweeping. The impeller vacuum fan pulls
the lighter dust up and through a baffle system. The Pre-Clean Flap separates the heavier dust particles to an area
below the filters. The dust filters capture the lighter dust particles. This allows the dust filters to remain cleaner and
need less shaking to remove dust. When the dust filters become clogged the filter shaker switch should be pushed
to start the dust shaker cycle. This will extend the life of the filters.
NOTE
TURN MAIN BROOM OFF FIRST
HOPPER
LIFT LEVER
HOPPER
DOOR LEVER
P-5104 FIGURE 18
P-5105 FIGURE 19
DUST CONTROL OPERATING INSTRUCTIONS