Nilfisk-Advance Retriever 6250 User manual

1/03 Form Number 56041556
A-English
B-Deutsch
C-Français
D-Nederlands
Retriever™6250
SR 1800
Advance MODELS 56419420 (propane),
56419421 (gas), 56419422 (diesel)
Nilfisk MODELS 56418004 (propane), 56418005 (gas),
56418006 (dual fuel OBSOLETE), 56418007 (diesel)
Instructions For Use
Bedienungsanleitung
Mode d' emploi
Gebruiksaanwijzing

A-2 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-2 / ENGLISH
Page
Introduction ..........................................................................................A-3
Parts and Service.................................................................................A-3
Nameplate............................................................................................A-3
Uncrating the Machine .........................................................................A-3
Cautions and Warnings........................................................................A-4
General Information .............................................................................A-5
Know Your Machine ....................................................................... A-6-10
Preparing the Machine for Use
Pre-Operational Checklist ..................................................................A-11
Fuel ....................................................................................................A-11
Operating the Machine
Starting the Gasoline Engine .............................................................A-12
Starting the Propane Engine ..............................................................A-12
Starting the Dual Fuel Engine ............................................................A-12
Starting the Diesel Engine .................................................................A-12
Sweeping ...........................................................................................A-13
Emptying the Hopper .........................................................................A-13
After Using the Machine
After Use ............................................................................................A-14
Shutting Down the Gasoline Engine ..................................................A-14
Shutting Down the Propane Engine ...................................................A-14
Shutting Down the Dual Fuel Engine .................................................A-14
Shutting Down the Diesel Engine ......................................................A-14
Maintenance
Every 15 Hours of Operation .............................................................A-15
Every 30 Hours of Operation .............................................................A-15
Every 150 Hours of Operation ...........................................................A-15
Every 300 Hours of Operation ...........................................................A-15
Every 1000 Hours of Operation .........................................................A-15
Side Broom Maintenance...................................................................A-16
Main Broom Maintenance ............................................................ A-16-17
Hopper Dust Control Filter .................................................................A-17
Parking Brake Lever Adjustment .......................................................A-18
Engine Oil ..........................................................................................A-18
Engine Air Filter .................................................................................A-18
Circuit Breaker Location.....................................................................A-18
Troubleshooting .................................................................................A-19
Technical Specifications ....................................................................A-19

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-3
ENGLISH / A-3
INTRODUCTION
This manual will help you get the most from your Nilfisk-Advance Retriever™6250 / SR 1800. Read it thoroughly before operating the machine.
Note: Bold numbers in parentheses indicate an item illustrated on pages A-6-10.
PARTS AND SERVICE
Repairs, when required, should be performed by Nilfisk-Advance service personnel using Nilfisk-Advance original replacement parts and accessories.
Call Nilfisk-Advance for repair parts or service. Please specify the Model and Serial Number when discussing your machine.
NAME PLATE
The Model and Serial Number of your machine are shown on the Nameplate on the right side of the machine. This information is needed when ordering repair
parts for the machine. Use the space below to note the Model and Serial Number of your machine for future reference.
MODEL
SERIAL NUMBER
UNCRATING THE MACHINE
When the machine is delivered, carefully inspect the shipping carton and the machine for damage. If damage is evident, save the shipping carton so that it can
be inspected by the carrier that delivered it. Contact the carrier immediately to file a freight damage claim.
1After removing the crate, remove the wooden blocks next to the wheels.
2Check the engine oil level, add oil if necessary.
3Check the engine coolant level, add coolant if necessary.
4Check the hydraulic oil level, add oil if necessary.
5Read the instructions in the Preparing the Machine For Use section of this manual, then fill the fuel tank.
6Place a ramp next to the front end of the pallet.
7Read the instructions in the Operating Controls and Operating the Machine sections of this manual and start the engine. Slowly drive the machine forward
from the pallet to the floor. Keep your foot lightly on the brake pedal until the machine is off the pallet.
CAUTION!
Use extreme CAUTION when operating this sweeper. Be certain that you are thoroughly familiar with all of the operating instructions
prior to using this sweeper. If you have any questions, contact your supervisor or your local Nilfisk-Advance Industrial Dealer.
Should your sweeper malfunction, do not attempt to correct the problem unless your supervisor directs you to do so. Have a qualified
company mechanic or an authorized Nilfisk-Advance Dealer Service person make any necessary corrections to the equipment.
Use extreme care when working on this machine. Neckties, loose clothing, long hair, rings and bracelets can get caught in moving
parts. Turn the Key Switch (52) OFF, set the Parking Brake (3) and disconnect the battery before working on the machine. Use good
common sense, practice good safety habits and pay attention to the yellow decals on this machine.
MODEL ENGINE ENGINE
NUMBER MAKE MODEL NUMBER FUEL
56418005 Ford VSG 413I-6005-A GASOLINE (G)
56418004 Ford VSG 413I-6005-A PROPANE (P)
56418006 Ford VSG 413I-6005-A DUAL FUEL (DU)
56418007 Kubota V1505TE-1 DIESEL (D)
* Note: Reference the separately supplied engine manufacture’s maintenance and operator manual for more detailed engine specification and service data.

A-4 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-4 / ENGLISH
CAUTIONS AND WARNINGS
SYMBOLS
Nilfisk-Advance uses the symbols below to signal potentially dangerous conditions. Always read this information carefully and take
the necessary steps to protect personnel and property.
DANGER !
Is used to warn of immediate hazards that will cause severe personal injury or death.
WARNING !
Is used to call attention to a situation that could cause severe personal injury.
CAUTION !
Is used to call attention to a situation that could cause minor personal injury or damage to the machine or other property.
GENERAL SAFETY INSTRUCTIONS
Specific Cautions and Warnings are included to warn you of potential danger of machine damage or bodily harm.
WARNING !
*This machine shall be used only by properly trained and authorized persons.
*While on ramps or inclines, avoid sudden stops when loaded. Avoid abrupt sharp turns. Use low speed down hills. Clean
only while ascending (driving up) the ramp.
*To avoid hydraulic oil injection or injury always wear appropriate clothing and eye protection when working with or near
hydraulic system.
*Turn the key switch off (O) and disconnect the battery before servicing electrical components.
*Never work under a machine without safety blocks or stands to support the machine.
*Do not dispense flammable cleaning agents, operate the machine on or near these agents, or operate in areas where
flammable liquids exist.
*Do not clean this machine with a pressure washer.
*This machine emits exhaust gases (carbon monoxide) that can cause serious injury or death, always provide adequate
ventilation when using machine.
CAUTION !
*This machine is not approved for use on public paths or roads.
*This machine is not suitable for picking up hazardous dust.
*When operating this machine, ensure that third parties, particularly children, are not endangered.
*Before performing any service function, carefully read all instructions pertaining to that function.
*Do not leave the machine unattended without first turning the key switch off (O), removing the key and applying the parking
brake.
*Turn the key switch off (O) before changing the brushes, and before opening any access panels.
*Take precautions to prevent hair, jewelry, or loose clothing from becoming caught in moving parts.
SAVE THESE INSTRUCTIONS

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-5
ENGLISH / A-5
HOPPER SAFETY SUPPORT
WARNING!
MakesuretheHopperSafetySupport(5)isinplacewheneverattemptingtodoanymaintenanceworkunderorneartheraisedhopper.
The Hopper Safety Support (5) holds the hopper in the raised position to allow work to be performed under the hopper. NEVER rely
on the machine’s hydraulic components to safely support the hopper.
JACKING THE MACHINE
CAUTION!
Never work under a machine without safety stands or blocks to support the machine.
•When jacking the machine, do so at designated locations (Do Not jack on the hopper) - see jacking locations (25).
TRANSPORTING THE MACHINE
CAUTION!
Before transporting the machine on an open truck or trailer, make sure that...
•All access doors are latched securely
•The machine is tied down securely.
•The machine parking brake is set.
TOWING OR PUSHING A DISABLED MACHINE
The machine’s drive propelling pump is manufactured with an adjustable tow valve. This valve prevents damage to the hydraulic system when the machine is
being towed/pushed short distances without use of the engine.
To access the valve open the left front door panel and locate the valve as shown on top rear of the propelling pump. Use a pliers or 5/16” (8 mm) open end wrench
to turn the valve 90 degrees, this disengages the hydrostatic lock between the motor and pump.
WARNING: The hydraulic propelling pump can be damaged if the machine is towed with the valve in the normal working position (A). Reference the illustrations
below for the normal working setting (A) (vertical) and the free wheeling towing setting (B) (horizontal). Note: If the tow valve is left in free wheeling (B) (horizontal)
position the propelling pump can’t drive the machine FWD or REV. No damage will result, just re-set valve to the normal working setting (A) (vertical). NOTE:
Tow or push machine no faster than a normal walking pace (2-3 miles per hour) and for short distances only. If the machine is to be moved long distances the
drive wheel needs to be raised off the floor and placed on a suitable transport dolly.
AB

A-6 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-6 / ENGLISH
KNOW YOUR MACHINE
As you read this manual, you will occasionally run across a bold number in parentheses - example: (2). These numbers refer to an item on the next three pages.
Refer back to these pages whenever necessary to pinpoint the location of an item mentioned in the text.
1Operator’s Seat
2Engine Cover
3Parking Brake Lever (Foot Brake)
4Hopper Safety Support Pull Rod
5Hopper Safety Support
6Hopper Cover
7 Hopper Cover Prop Rod
8Litter Door
9Head Light
10 Hopper Dust Control Filter
11 Shaker Assembly Latch
12 Dust Filter Shaker Assembly
13 Side Broom
14 Tie Down Point
15 Main Broom Access Door
16 FWD / REV Drive Pedal
17 Side Broom Raise / Lower (ON / OFF) Lever
123
456
7
9
8
10 11
12
9
13
14
15
16
17

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-7
ENGLISH / A-7
KNOW YOUR MACHINE (CONTINUED)
18 Hopper Cover Latch
19 Battery
20 Tilt Wheel Lever
21 Steering Wheel
22 Oil Reservoir
23 Propane Tank
24 Fuel Tank
25 Jacking Locations
26 Engine Oil Drain
27 Muffler
28 Coolant Recovery Tank
29 Engine Oil Dipstick
30 Engine Air Filter
31 Engine Access Door
32 Circuit Breaker / Battery Compartment Door
33 Circuit Breaker Panel
34 Horn Button (Not Shown / Found Below Brake Pedal)
35 Control Panel (see associated pages)
18
19 20 21
22
23
24
25
14
14
26
27
30
29
31
32
33
14
25
28
35

A-8 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-8 / ENGLISH
CONTROL PANEL
36 Oil Pressure Gauge (optional)
37 Battery Meter (optional)
38 Fuel Gauge (Gas, Dual Fuel and Diesel Only)
39 Hourmeter
40 Dust Control / Shaker Switch
41 Headlight Switch
42 Engine Speed Switch (Gas, LP and Dual Fuel Only)
43 Dump Door Indicator Light
44 Check Engine Indicator Light
45 Engine Temperature Indicator Light
46 Battery Indicator Light
47 Oil Pressure Indicator Light
57 36 38 40
42
41
39
37
54 58 53
55 56 52
57 36 38 41
40
39
37
60 58 53
55 56 52
Retriever™6250/SR 1800: G, P, DU
Retriever™6250/SR 1800 D
48 Dust Control Filter Indicator Light (optional)
49 Hopper Temperature Indicator Light (optional)
50 Hydraulic Filter Indicator Light
51 Propane Fuel Low Indicator Light
52 Ignition Key Switch
53 Main Broom Raise / Lower (ON /OFF) Lever
54 Fuel Selector (Dual Fuel Only)
55 Hopper Raise / Lower Lever
56 Hopper Door Open / Close Lever
57 Water Temp. Gauge (optional)
58 Air Filter Service Indicator
59 Glow Plug Indicator Light (Diesel Only)
60 Throttle Control (Diesel Only)

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-9
ENGLISH / A-9
KNOW YOUR MACHINE DESCRIPTIONS
1OPERATOR’S SEAT - seat tips forward for access to the hydraulic oil tank and propane tank. Engage prop bar for safety.
2ENGINE COVER – unlatch and raise to access engine compartment.
3PARKING BRAKE LEVER (FOOT BRAKE) - operates the mechanical brakes on the front wheels.
4HOPPER SAFETY SUPPORT PULL ROD – pull up on rod while hopper is raised to pull safety support into place.
5 HOPPER SAFETY SUPPORT – used to support the hopper while raised.
6HOPPER COVER – open to access the hopper dust control filter.
7HOPPER COVER PROP ROD - used to support the hopper cover while raised.
8LITTER DOOR – throw debris in here that is too large for the broom to pick up.
9HEAD LIGHT – use when sweeping in hard to see areas.
10 HOPPER DUST CONTROL FILTER – filters dust from the air.
11 SHAKER ASSEMBLY LATCH – used to hold the shaker assembly UP while servicing the filter.
12 DUST FILTER SHAKER ASSEMBLY – vibrates the dust control filter to shake dust out of it.
13 SIDE BROOM – used for sweeping along walls or curbs.
14 TIE DOWN POINT – safe point to tie down machine when transporting via trailer or truck.
15 MAIN BROOM ACCESS DOOR – open to access main broom for servicing.
16 FORWARD/REVERSE DRIVE PEDAL - controls the machine’s travel speed and direction:
Push down on the Back of the pedal to move the machine Backward.
Push down on the Front of the pedal to move the machine Forward.
The SPEED of the machine will increase as the pedal is pushed closer to the floor. Maximum forward speed is faster than maximum reverse speed.
17 SIDE BROOM RAISE/LOWER (ON/0FF) LEVER - raises or lowers (stops and starts) the side broom.
18 HOPPER COVER LATCH – holds hopper cover in place.
19 BATTERY – provides electrical power for starting engine.
20 TILT WHEEL LEVER – push lever down to release steering column for adjusting up or down.
21 STEERING WHEEL – used to steer machine left or right.
22 OIL RESERVOIR - holds the hydraulic system oil, 11 gallon (41.63 liter) capacity.
23 PROPANE FUEL TANK - 33 lb. liquid withdrawal propane tank.
24 FUEL TANK – 12 gallon (45 liter) capacity
25 JACKING LOCATIONS – safe points for jacking machine up.
26 ENGINE OIL DRAIN – location of engine oil drain plug (under rear bumper).
27 MUFFLER – muffles engine exhaust.
28 COOLANT RECOVERY TANK – recovers coolant pushed out of radiator while engine is hot, used for checking coolant level.
29 ENGINE OIL DIPSTICK – used to check engine oil level.
30 ENGINE AIR FILTER – filters engine’s intake air supply.
31 ENGINE ACCESS DOOR - unlatch and open to access engine compartment.
32 CIRCUIT BREAKER / BATTERY COMPARTMENT DOOR – unlatch and open to access circuit breakers, battery & engine air filter.
33 CIRCUIT BREAKER PANEL – location of all machine circuit breakers.
34 HORN BUTTON - sounds the horn (directly below the brake pedal).
35 CONTROL PANEL – See associated pages.

A-10 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-10 / ENGLISH
CONTROL PANEL DESCRIPTIONS
36 OIL PRESSURE GAUGE (OPTIONAL) - indicates the engine oil pressure while the engine is running.
37 BATTERY METER (OPTIONAL) - indicates the level of battery voltage and charging voltage.
38 FUEL GAUGE (GAS, DUAL FUEL AND DIESEL ONLY) – indicates the amount of fuel in the fuel tank.
39 HOUR METER - indicates the accumulated hours of usage.
40 DUST CONTROL SHAKER SWITCH - controls the vacuum system and the vacuum filter shaker. The vacuum system picks up dust raised by the main
broom. The filter shaker cleans the vacuum filter.
41 HEADLIGHT SWITCH - turns on the headlights.
42 ENGINE SPEED SWITCH (GAS, LP AND DUAL FUEL ONLY) – controls the speed of the engine. When operating the machine, the engine speed switch
should be in the full throttle position (lll).
43 DUMP DOOR INDICATOR LIGHT – indicates that dump door is closed or the hopper is raised.
44 CHECK ENGINE INDICATOR LIGHT (Currently N/A) – indicates a malfunction of the EFI system, shut off engine and have your Advance Service Center
check the machine.
45 ENGINE TEMPERATURE INDICATOR LIGHT – indicates engine overheating, comes on at 225° F (107° C), engine shuts itself off at 235° F (113° C).
Turn key off and have your Advance Service Center check the machine.
46 BATTERY INDICATOR LIGHT – indicates a charging system malfunction, shut off engine and have your Nilfisk-Advance Service Center check the
machine.
47 OIL PRESSURE INDICATOR LIGHT – indicates loss of engine oil pressure, 10 seconds after the light comes on, the engine will shut itself off. Turn key
off and have your Advance Service Center check the machine.
48 DUST CONTROL FILTER INDICATOR LIGHT (OPTIONAL) - indicates when the dust control filter should be serviced.
49 HOPPER TEMPERATURE INDICATOR LIGHT (OPTIONAL) – indicates potential fire in the hopper.
50 HYDRAULIC FILTER INDICATOR LIGHT - indicates when the hydraulic oil filter should be serviced. Have your Nilfisk-Advance Service Center check
the machine.
51 PROPANE FUEL LOW INDICATOR LIGHT – indicates low propane fuel level.
52 IGNITION KEY SWITCH - controls the engine and some parts of the electrical system.
53 MAIN BROOM RAISE / LOWER (ON/OFF) LEVER - raises and lowers (stops and starts) the main sweeping broom. The sweep position is for smooth
floors. The full float position is for rough floors.
54 FUEL SELECTOR – found on dual fuel model only, to switch between propane and gasoline.
55 HOPPER RAISE/LOWER LEVER - controls the hydraulic cylinder that raises the hopper for dumping.
56 HOPPER DOOR OPEN / CLOSE LEVER - opens and closes the hopper dump door.
57 WATER TEMPERATURE GAUGE (OPTIONAL) - indicates the temperature of the engine coolant while the engine is running.
58 AIR FILTER SERVICE INDICATOR - Do not service the air filter unless the red flag is visible in the service indicator.
59 GLOW PLUG INDICATOR LIGHT (DIESEL ONLY) - indicates that the glow plugs are warming up, start engine after light goes out.
60 THROTTLE CONTROL (DIESEL ONLY) - controls the speed of the diesel engine. When operating the machine, the engine speed switch should be in
the full throttle (rabbit) position.

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-11
ENGLISH / A-11
PRE-OPERATIONAL CHECKLIST
Before Each Use:
*Inspect the machine for damage, oil or coolant leaks.
*Squeeze the rubber dust cup on the Engine Air Filter (30) to release built-up dust.
*Check the engine coolant level (28).
*Check the engine oil level (29).
*Check the hydraulic oil level (22).
*Check the Fuel Gauge (38) on the gasoline, dual fuel and diesel models.
*Check the Fuel Gauge located on the LP tank (23) for propane model.
*Check the tire pressure of all three tires, should be 90 psi.
*Check the Air Filter Service Indicator (58).
In the Driver’s Seat:
*Be sure that you understand the operating controls and their functions.
*Adjust the seat to allow easy reach of all controls.
*InserttheMasterKeyandturntheIgnitionKeySwitch(52)totheONposition. CheckforproperoperationoftheHorn(37),HourMeter(39)andHeadlights
(41). Turn the Ignition Key Switch (52) OFF.
*Check the Parking Brake Lever (3). The lever must hold firmly its (locked parked ) setting with out easily being released.
(Report all defects immediately to service personnel).
Plan Your Cleaning in Advance:
*Arrange long runs with a minimum of stopping or starting.
*Allow 6 inches of broom path overlap to ensure complete coverage.
*Avoid making sharp turns, bumping into posts, or scraping the side of the machine.
FUEL
WARNING !
•ALWAYS STOP THE ENGINE BEFORE FILLING THE FUEL TANK.
•DO NOT SMOKE WHILE FILLING THE FUEL TANK.
•FILL THE FUEL TANK IN A WELL-VENTILATED AREA.
•DO NOT FILL THE FUEL TANK NEAR SPARKS OR OPEN FLAME.
•USE ONLY THE FUEL SPECIFIED ON THE FUEL TANK DECAL.
MODELS 56418005/56419421 (GASOLINE)
Onmachines with gasoline engines, the fuel tank (24)is located at the rear of the machine. Adecal near thefiller neck shows theproper fuel touse in themachine.
Before removing the cap from the tank, wipe all dust and dirt from the cap and from around the filler neck to keep the fuel as clean as possible.
Fill the tank with unleaded 87 octane regular gasoline. Fuel Tank capacity is 12 gallons (45 liters). Wipe up any gas spilled on or near the machine immediately!
MODELS 56418004/56419420 (PROPANE)
On machines with propane engines, the LP tank (23) is located under the drivers seat. A decal gives information about the proper type of tank to be used on the
machine.
To install the LP tank, tip the Seat Panel forward. Mount a standard 33 pound (14.85 kg) horizontal liquid withdrawal propane tank into the cradle. Align orientating
hole onto pin, lower Seat Panel.
Connect the fuel hose and open the shutoff valve slowly on the tank. Wear gloves when connecting or disconnecting the fuel hose. Shut the propane tank service
valve OFF when the machine is not in use.
MODEL 56418006 (DUAL FUEL, GASOLINE/PROPANE)
Refer to the gasoline and propane sections above for tank locations and instructions. The machine can be operated on either gasoline or propane. Set the Fuel
Selector (54) to the desired fuel and follow the instructions for that fuel. Fuel selection can be changed while the engine is running.
NOTE: The LP fuel hose fitting should be connected to an LP tank at all times. The LP fuel hose fitting could be damaged if it is disconnected from the LP tank
and the machine is operated in gasoline mode.
MODELS 56418007/56419422 (DIESEL)
On machines with diesel engines, the fuel tank (24) is located at the rear of the machine. A decal near the filler neck shows the proper fuel to use in the machine.
Before removing the cap from the tank, wipe all dust and dirt from the cap and from around the filler neck to keep the fuel as clean as possible.
Fill the tank with diesel fuel. Fuel Tank capacity is 12 gallons (45 liters). Wipe up any gas spilled on or near the machine immediately!

A-12 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-12 / ENGLISH
STARTING THE GASOLINE ENGINE
1With the Engine Speed Switch (42) in the IDLE position ( l ), turn the Ignition Key Switch (52) clockwise to the START position and release it as soon as
the engine starts. If the engine does not start after cranking for 15 seconds, release the key, wait for 1 minute, then try again.
2Once started, let the engine run with the Throttle Control Switch in the IDLE ( l ) position for 5 minutes before using the machine.
3Push the Throttle Control Switch to the FULL THROTTLE position ( lll )and move the machine around for 2 or 3 minutes at a slow speed to warm up the
hydraulic system.
STARTING THE PROPANE ENGINE
1Open the service valve on the LP fuel tank (23).
2With the Engine Speed Switch (42) in the IDLE position ( l ), turn the Ignition Key Switch (52) clockwise to the START position and release it as soon as
the engine starts. If the engine does not start after cranking for 15 seconds, release the key, wait for 1 minute, then try again.
3Once started, let the engine run with the Throttle Control Switch in the IDLE position ( l ) for 5 minutes before using the machine.
4Push the Throttle Control Switch to the FULL THROTTLE position ( lll ) and move the machine around for 2 or 3 minutes at a slow speed to warm up the
hydraulic system.
STARTING THE DUAL FUEL ENGINE
1The machine can be started using either fuel.
2Select the desired fuel (54) and follow the starting procedure for that fuel.
3 In cold environments (below 32 degrees F / 0 degrees C) starting the unit on gasoline is recommended.
STARTING THE DIESEL ENGINE
1With the Throttle Control (60) in the IDLE position, turn the Ignition Key Switch (52) counterclockwise to the GLOWPLUG position and hold until the Glow
Plug Indicator Light (59) turns OFF. Then turn clockwise to the START position and release it as soon as the engine starts.
2Once started, let the engine run with the Throttle Control in the IDLE position for 5 minutes before using the machine.
3Push the Throttle Control to the FULL THROTTLE position and move the machine around for 2 or 3 minutes at a slow speed to warm up the hydraulic
system.
NOTE: ALWAYS operate the machine with the Throttle Control at full throttle. Use the Forward/Reverse Pedal (16) - not the Throttle Control - to control
the speed of the machine. The speed of the machine will increase as the pedal is pushed closer to the floor. Do not press the Forward/Reverse Pedal until the
engine has started, this will disengage the starter.

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-13
ENGLISH / A-13
SWEEPING
Follow the instructions in the preparing the machine for use section of the manual.
1Pull the Main Broom Raise / Lower (ON/OFF) Lever (53) back and slide to the left and up to lower and start the main broom. NOTE: The broom will
not turn on if the hopper door is closed or if the hopper is not completely down.
2When sweeping dry floors, turn the dust control system ON by pushing the Dust Control / Shaker Switch (40) to the permanent ON position.
When sweeping floors with puddles, put the Dust Control / Shaker Switch (40) in the neutral or OFF position before the machine enters a puddle. Turn
the Dust Control / Shaker Switch (40) ON when the machine is back on a completely dry floor.
When sweeping wet floors, keep the Dust Control / Shaker Switch (40) in the OFF position. (This will prevent moisture from getting into the Hopper Dust
Control Filter (10).
3Lower the Side Broom (13) by pulling the Side Broom Raise / Lower (ON / OFF) Lever (17) down to the right and up for sweeping along a wall or curb.
Raise the side broom when sweeping in an open area. NOTE: The broom will not turn on if the hopper door is closed or if the hopper is not completely
down.
4Drive the machine forward in a straight line at a quick walking speed and overlap each pass approximately 6 inches (150 mm). Drive the machine slower
when sweeping large amounts of dirt or debris or when safe operation dictates slower speeds.
5When sweeping extremely dusty floors, it may be necessary to stop sweeping occasionally and shake the Hopper Dust Control Filter (10). To shake the
filter, push the Dust Control / Shaker Switch (40) to the momentary ON position, and hold for 20 seconds. Push the switch back up to the permanent ON
position to activate the dust control impeller and continue sweeping.
6Check behind the machine occasionally to make sure that the machine is picking up debris. Dirt left behind in the path of the machine usually indicates
that the machine is moving too fast, the broom needs to be adjusted, or the hopper is full. NOTE: If there is debris on the floor too large to be swept up,
open the Litter Door (8) and throw it into the hopper.
EMPTYING THE HOPPER
NOTE: The MINIMUM ceiling height dumping clearance required for raising the hopper is 99.6” (252.98 cm)
1Put the Main Broom Raise / Lower (ON / OFF) Lever (53) and the Side Broom Raise / Lower (ON / OFF) Lever (17) to the UP position.
2Pull the Hopper Door Open / Close Lever (56) back to close the hopper door.
3Push the Dust Control / Shaker Switch (40) to the momentary ON position and hold it for 20 seconds.
4Drive the machine close to a large trash receptacle and pull the Hopper Raise / Lower Lever (55) back into the UP position until the hopper is raised to
the desired height.
5Slowly drive the machine forward until the hopper is over the receptacle and apply the Parking Brake (3).
6Push the Hopper Door Open / Close Lever (56) forward until the hopper door is completely open. Once all of the debris has emptied out, close the hopper
door. NOTE: The Dust Control / Shaker Switch (40) may be left ON while dumping to draw some of the dust through the Hopper Dust Control Filter (10).
This is effective when dumping onto the ground or onto a pile.
7Put the Hopper Safety Support (5) in place by pulling up on the Hopper Safety Support Pull Rod (4), then lower the hopper slightly to secure.
8Look for an accumulation of litter on the back of the hopper and on the front of the broom housing. Use a broom, if necessary, to remove litter from these
areas. The back of the hopper must seal tightly against the front of the broom housing for proper operation.
9Return to the operator’s compartment. Release the parking brake. Move the machine back until the hopper will clear the receptacle. Raise the hopper
slightly until the Hopper Safety Support (5) disengages, then lower the hopper. and re-open the hopper door. NOTE: The brooms will not turn on if the
hopper door is closed or if the hopper is not completely down. The indicator light on the control panel should turn OFF indicating that the machine is ready
for use.

A-14 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-14 / ENGLISH
AFTER USE
1Shake the Hopper Dust Control Filter (10) and empty the hopper.
2Check the maintenance schedule and perform all required maintenance before storage.
3Move the machine to an indoor storage area.
4Shut down the engine according to the shut down procedures.
5Make sure the Ignition Key Switch (52) is OFF and the Parking Brake (3) is engaged.
TO SHUT DOWN THE GASOLINE ENGINE...
1Turn all controls to the OFF position.
2Raise the brooms.
3Place the Engine Speed Switch (42) in IDLE and let the engine idle for 25 - 30 seconds.
4Turn the Ignition Key Switch (52) OFF and remove the key.
5Apply the Parking Brake (3).
TO SHUT DOWN THE PROPANE ENGINE...
1Turn all controls to the OFF position.
2Raise the brooms.
3Turn the service valve on LP Gas Tank (23) OFF.
4Run the engine until all the LP gas is dispelled from the line (the engine will stall).
5Turn the Ignition Key Switch (52) OFF and remove the key.
6Apply the Parking Brake (3).
TO SHUT DOWN THE DUAL FUEL ENGINE...
1Select propane fuel (54) and follow the propane shut down procedures.
TO SHUT DOWN THE DIESEL ENGINE...
1Turn all controls to the OFF position.
2Raise the brooms.
3Place the Throttle Control (60) in IDLE and let the engine idle for 5 minutes.
4Turn the Ignition Key Switch (52) OFF and remove the key.
5Apply the Parking Brake (3).
REPORT ANY DEFECT OR MALFUNCTION NOTED DURING OPERATION TO AUTHORIZED SERVICE OR MAINTENANCE PERSONNEL.

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-15
ENGLISH / A-15
MAINTENANCE
Make sure that the machine is kept in top shape by following the maintenance schedule closely. Maintenance intervals given are for average operating conditions.
Machines used in severe environments may require service more often.
Repairs, when required, should be performed by your Authorized Nilfisk-Advance Service Center, who employs factory trained service personnel and maintains
an inventory of Nilfisk-Advance Original Equipment Replacement Parts and Accessories.
NOTE: Refer to the Service Manual (form number 56043051) for more detail on maintenance and service repairs.
EVERY 15 HOURS OF OPERATION
1Check the Engine Coolant level. Lift the Engine Cover (2) and observe the coolant level on the Coolant Recovery Tank (28). If the level is low, add a
mixture of half water and half automotive type anti-freeze.
CAUTION!
Do not remove the radiator cap when the engine is hot.
WARNING!
To avoid hydraulic oil injection or injury, always wear appropriate clothing and eye protection when working with or near hydraulic
system.
2Check the Hydraulic Oil Level. The hydraulic oil tank is located under the operator’s seat. Remove the Fill Cap (22) from the tank and look to the bottom
of the filler screen. If the oil level is below the bottom of the filler screen, add 10W30 motor oil until the bottom of the filler screen is covered. Change the
oil if major contamination from a mechanical failure occurs.
IMPORTANT!
This machine is equipped with an indicator light which lights if the filter requires changing.
EVERY 30 HOURS OF OPERATION
1Rotate the Main Broom. Refer to the Main Broom Maintenance section.
2Adjust the Main Broom. Refer to the Main Broom Maintenance section.
3Clean the Hopper Dust Control Filter (10) using Method “A”. Refer to the Hopper Dust Control Filter section.
4Adjust the Side Broom. Refer to the Side Broom Maintenance section.
5Inspect the rubber skirts all around the machine and in the broom housing; replace if damaged or worn.
6Check and adjust the parking brake.
EVERY 150 HOURS OF OPERATION
1Clean the Hopper Dust Control Filter (10) using Method “B”. Refer to the Hopper Dust Control Filter section.
2Clean radiator and oil cooler exteriors by flushing with low pressure water. Do not use high pressure as this will damage the cooling fins.
3Change the Engine Oil and Filter.
EVERY 300 HOURS OF OPERATION
1Clean the Hopper Dust Control Filter (10) using Method “C”. Refer to the Hopper Dust Control Filter section.
2Lubricate grease fittings located on steering gearbox cover.
EVERY 1000 HOURS OF OPERATION
1Change the Hydraulic Oil and Filter.
2Flush the radiator.
3Have your Nilfisk-Advance service center inspect the steering gearbox.

A-16 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-16 / ENGLISH
SIDE BROOM MAINTENANCE
To adjust the Side Broom...
1Put the side broom in the DOWN position.
2Loosen the Handle (A) and slide the Stop Bracket (B) up or down to lower or raise the Side Broom (13). The farther the Lever (17) travels up in the slot,
the lower the Side Broom (13) will be.
3When in the Down position, the Side Broom (13) should be contacting the floor from the 10 O’Clock (C) to the 3 O’Clock (D) area shown.
4Once the Side Broom (13) is properly adjusted, tighten the Handle (A) to secure the Stop Bracket (B).
NOTE: The machine should be stored with the Side Broom (13) in the raised position. The Side Broom (13) should be replaced when the bristles are worn to
a length of 3 inches (7.62 cm) or it becomes ineffective. The Side Broom stop must be re-adjusted when ever the broom has been replaced.
To replace the Side Broom...
1Put the Side Broom (13) in the UP position.
2Reach under the Side Broom (13) and remove the large T-Handle Nut holding the side broom on and remove the broom and plastic disc.
3Install the new broom and plastic disc by aligning the three alignment pins and pushing on. Re-install the T-Handle Nut and tighten.
MAIN BROOM MAINTENANCE
Since the Main Broom Motor always turns in the same direction, the bristles on the broom eventually become curved, reducing sweeping performance. Sweeping
performance can be improved by removing the broom and turning it around (end-for-end). This procedure, known as “rotating” the main broom, should be done
once every 30 hours of operation.
The main broom should be replaced when the bristles are worn to a length of 2-1/2 inches (6.35 cm). The main broom stop must be re-adjusted when the broom
is replaced.
NOTE: The machine should be stored with the Main Broom in the raised position.
WARNING!
The engine must not be running when performing this procedure.
To Rotate or Replace the Main Broom...
1Turn the Ignition Key Switch (52) OFF.
2Put the Main Broom Raise / Lower (ON / OFF) Lever (53) in the DOWN position.
3Open the Main Broom Access Door (15).
4Remove the large T-Bolt from the side of the broom idler arm. Pivot the idler arm assembly out of the main broom core.
A
B
17
C
D

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-17
ENGLISH / A-17
MAIN BROOM MAINTENANCE (CONTINUED)
5Pull the main broom out of the broom housing and remove any string or wire
wrapped around it. Also inspect the skirts at the front, back and sides of the
broom housing. The skirts should be replaced or adjusted if they are torn or
worn to a height of more than 1/4 inch (6.35 mm) off the ground.
6Turnthebroomaround(end-for-end)andslideitbackintothebroomhousing.
Make sure that the lugs on the broom drive hub (left side) engage the slots
in the broom core.
7Swing the idler arm assembly back into the broom core and re-install the T-
Bolt that holds the idler arm in place.
8Close and latch the Main Broom Access Door (15).
To Adjust the Main Broom Height...
1Drive the machine to an area with a level floor and set the parking brake.
2PulltheMainBroomRaise / Lower (ON/OFF) Lever (53)back and slide to the
left and up to lower and start the main broom. DO NOT move the machine.
3Let the main broom run in place for 1 minute. This allows the broom to polish
a “strip” on the floor. After 1 minute, raise the broom, release the parking
brake and move the machine so that the polished strip is visible.
4Inspect the polished strip on the floor. If the strip is less than 2 inches (5.08
cm) or more than 3 inches (7.62cm) wide, the broom needs to be adjusted.
5To adjust, loosen the Handle (A) and slide the Stop Bracket (B) up or down
to lower or raise the Main Broom. The farther the Lever (5) travels up in the
slot, the lower the Main Broom will be. Tighten Handle (A) after adjusting the
position of the Stop Bracket (B).
6Repeat steps 1-5 until the polished strip is 2-3 inches (5.08-7.62cm) wide.
The width of the polished strip should be the same at both ends of the broom.
If the strip is tapered, move the machine to a different area and repeat steps
1-5. If the polished strip is still tapered, contact your Nilfisk-Advance Dealer
for service.
HOPPER DUST CONTROL FILTER
The hopper dust control filter must be cleaned regularly to maintain the efficiency of the vacuum system. Follow the recommended filter service intervals for the
longest filter life.
CAUTION!
Wear safety glasses when cleaning the filter.
Do not puncture the paper filter.
Clean the filter in a well-ventilated area.
To remove the hopper dust control filter...
1Lift the Hopper Cover (6) on top of the hopper. Make sure that the Hopper Cover Prop Rod (7) is in place.
2Inspect the top of the Hopper Dust Control Filter (10) for damage. A large amount of dust on top of the filter is usually caused by a hole in the filter or
a damaged filter gasket.
3Turn the two hold-downs to the side (one on each side at the front of the frame) to release the shaker frame, then swing the Dust Filter Shaker Assembly
(12) up and latch in place with the Shaker Assembly Latch (11).
4Lift the Hopper Dust Control Filter (10) out of the machine.
5Clean the filter using one of the methods below:
Method “A”
Vacuum loose dust from the filter. Then gently tap the filter against a flat surface (with the dirty side down) to remove loose dust and dirt. NOTE: Take
care not to damage the metal lip which extends past the gasket.
Method “B”
Vacuum loose dust from the filter. Then blow compressed air (maximum pressure 100 psi) into the clean side of the filter (in the opposite direction of the
airflow).
Method “C”
Vacuum loose dust from the filter. Then soak the filter in warm water for 15 minutes, then rinse it under a gentle stream of water (maximum pressure 40
psi). Let the filter dry completely before putting it back into the machine.
6Follow the instructions in reverse order to install the filter. If the gasket on the filter is torn or missing, it must be replaced.
A
B

A-18 - FORM NO. 56041556 - Retriever™6250 / SR 1800
A-18 / ENGLISH
PARKING BRAKE LEVER ADJUSTMENT
The Parking Brake Lever (3) should be re-adjusted to where it firmly holds it’s (locked park) setting with out easily being released.
Normal adjustment of the parking brake can be accomplished from the operator compartment. Turn the handle knob on the end of the lever clockwise (CW) to
increasethe brake tension. Note: If the knobadjustment isinadequate tofirmly hold itsbrake setting,this indicatesthe needto inspect the brake shoes and linkage
for wear and the need for service or replacement.
ENGINE OIL
Check the engine oil level (29) before every use. The machine should be parked on a level surface and the engine cool. Change the engine oil after the first 35
hoursof operation and every 150 hoursafter that.The oilfilter shouldbe replacedwith everyoil change.The typeof oiluseddepends on the air temperature where
the machine is used.
TEMPERATURE RANGE OIL WEIGHT
above 60° F (15° C) SAE 10W-30
below 60° F (15° C) SAE 5W-30
ENGINE AIR FILTER
The Engine Air Filter (30) is located in the Circuit Breaker/Battery Compartment. Check the Air Filter Service Indicator (58) before each use of the machine. Do
not service the air filter unless the red flag is visible in the service indicator.
CAUTION!
When servicing the engine air filter elements, use extreme care to prevent loose dust from entering the engine. Dust can severely
damage the engine.
The engine air filter contains a Primary (outer) and a Safety (inner) filter element. The Primary Element may be cleaned twice before being replaced. The Safety
Element should be replaced every third time that the Primary Filter Element is replaced. Never attempt to clean the Inner Safety Element.
To clean the Primary Filter Element, unsnap the 2 clips at the end of the air filter and remove the end housing. Pull the primary element out. Clean the element
with compressed air (maximum pressure 100 psi) or wash it with water (maximum pressure 40 psi). DO NOT put the element back into the canister until it is
completely dry.
CIRCUIT BREAKER LOCATION (G, P, DU)
AHorn C.B. (F6 / 10A)
BHead Lights / Tail Lights C.B. (F4 / 20A)
CIgnition Circuit C.B. (F2 / 15A)
DShaker Motor C.B. (F5 / 8A)
EAccessory Circuit C.B. (F3 / 15A)
FMain C.B. (F1 / 40A)
CIRCUIT BREAKER LOCATION (D)
AHorn C.B. (F6 / 10A)
BHead Lights / Tail Lights C.B. (F4 / 20A)
CAccessory Circuit C.B. (F2 / 10A)
DShaker Motor C.B. (F5 / 8A)
EAccessory Circuit C.B. (F3 / 15A)
FMain C.B. (F1 / 40A)
A
B
C
D
E
F
A
B
C
D
E
F

FORM NO. 56041556 - Retriever™6250 / SR 1800 - A-19
ENGLISH / A-19
TROUBLESHOOTING
If the possible causes listed below are not the source of trouble, it is a symptom
of something more serious. Contact your Nilfisk-Advance Service Center
immediately for service.
TRIPPING THE CIRCUIT BREAKERS
The circuit breakers are located on the Circuit Breaker Panel (33), they protect
electricalcircuits and motors from damageduetooverload conditions. If a circuit
breaker trips, try to determine the cause.
Shaker Motor Circuit Breaker (8 Amp) Possible causes may be:
1Electrical short circuit (have your Nilfisk-Advance Service Center or
qualified electrician check the machine)
2Overloaded or jammed shaker motor (check shaker motor)
Accessory Circuit 1 Circuit Breaker (15 Amp) Possible cause may be:
1Electrical short circuit (have your Nilfisk-Advance Service Center or
qualified electrician check the machine)
Ignition Circuit Circuit Breaker (15 Amp) Possible cause may be:
1Electrical short circuit (have your Nilfisk-Advance Service Center or
qualified electrician check the machine)
Horn Circuit Breaker (10 Amp) Possible cause may be:
1Electrical short circuit (have your Nilfisk-Advance Service Center or
qualified electrician check the machine)
Headlight / Tail Light Circuit Breaker (20 Amp) Possible cause may be:
1Electrical short circuit (have your Nilfisk-Advance Service Center or
qualified electrician check the machine)
Main Circuit Breaker (40 Amp) Possible cause may be:
1Electrical short circuit (have your Nilfisk-Advance Service Center or
qualified electrician check the machine)
Once the problem has been corrected, push the button in to reset the circuit
breaker. If the button does not stay in, wait 5 minutes and try again. If the circuit
breaker trips repeatedly, call your Nilfisk-Advance Service Center for service.
TROUBLESHOOTING
If the possible causes listed below are not the source of trouble, it is a symptom
of something more serious. Contact your Nilfisk-Advance Service Center
immediately for service.
MACHINE WILL NOT MOVE
Possible causes may be:
1Parking Brake (3) set (release parking brake)
2Towing Valve in wrong position (set correctly)
3Tripped circuit breaker(s) (reset any tripped circuit breakers)
MAIN BROOM WILL NOT RUN
Possible causes may be:
1Hopper door is not open (open hopper door)
2Debris wrapped around the broom drive (remove debris)
3Hopper is not completely down (lower hopper completely)
4Tripped circuit breaker(s) (reset any tripped circuit breakers)
SIDE BROOM WILL NOT RUN
Possible causes may be:
1Hopper door is not open (open hopper door)
2Debris wrapped around the broom drive (remove debris)
3Hopper is not completely down (lower hopper completely)
4Tripped circuit breaker(s) (reset any tripped circuit breakers)
HOPPER WILL NOT RAISE
Possible causes may be:
1Tripped circuit breaker(s) (reset any tripped circuit breakers)
HOPPER DUMP DOOR WILL NOT OPEN
Possible causes may be:
1Dump door jammed by debris (remove debris and clean edges of dirt
chamber)
2Tripped circuit breaker(s) (reset any tripped circuit breakers)
SHAKER MOTOR WILL NOT RUN
Possible causes may be:
1Tripped circuit breaker(s) (reset any tripped circuit breakers)
DUST CONTROL SYSTEM (IMPELLER) WILL
NOT RUN
Possible causes may be:
1Tripped circuit breaker(s) (reset any tripped circuit breakers)
TECHNICAL SPECIFICATIONS (as installed and tested on the unit)
Model SR 1800(DU) Retriever™6250 / SR 1800(G) Retriever™6250 / SR 1800(P)Retriever™6250 / SR 1800(D)
Model No. 56418006 56419421 / 56418005 56419420 / 56418004 56419422 / 56418007
Sound Power Level (ISO 3744) dB(A)/20µPa 85 85 85 85
Total Weight lbs/kg 4,201 / 1,905 4,201 / 1,905 4,201 / 1,905 4,201 / 1,905
Tire Pressure psi 90 90 90 90
Vibrations at the Hand Controls m/s2<2.5 m/s2<2.5 m/s2<2.5 m/s2<2.5 m/s2
Vibrations at the Seat m/s2<0.5 m/s2<0.5 m/s2<0.5 m/s2<0.5 m/s2
Gradeability 26.8% (150)26.8% (150)26.8% (150)26.8% (150)

B-2 - FORM NO. 56041556 - Retriever™6250 / SR 1800
B-2 / DEUTSCH
Seite
Einleitung .............................................................................................B-3
Ersatzteile und Service ........................................................................B-3
Typenschild ..........................................................................................B-3
Auspacken der Maschine.....................................................................B-3
Sicherheits- und Warnhinweise ...........................................................B-4
Allgemeine Informationen ....................................................................B-5
Machen Sie sich mit Ihrer Maschine vertraut ................................. B-6-10
Vorbereitung der Maschine zum Einsatz
Checkliste: Vor der Inbetriebnahme...................................................B-11
Kraftstoff.............................................................................................B-11
Bedienung der Maschine
Starten des Benzinmotors..................................................................B-12
Starten des Propanmotors .................................................................B-12
Starten des Dual-Kraftstoff-Motors ....................................................B-12
Starten des Dieselmotors...................................................................B-12
Kehren ...............................................................................................B-13
Entleeren des Schmutzaufnahmebehälters .......................................B-13
Nach dem Einsatz der Maschine
Nach dem Einsatz ..............................................................................B-14
Abstellen des Benzinmotors ..............................................................B-14
Abstellen des Propanmotors ..............................................................B-14
Abstellen des Dual-Kraftstoff-Motors .................................................B-14
Abstellen des Dieselmotors ...............................................................B-14
Wartung
Alle 15 Betriebsstunden .....................................................................B-15
Alle 30 Betriebsstunden .....................................................................B-15
Alle 150 Betriebsstunden ...................................................................B-15
Alle 300 Betriebsstunden ...................................................................B-15
Alle 1000 Betriebsstunden .................................................................B-15
Wartung des Seitenbesens ................................................................B-16
Wartung des Hauptbesens .......................................................... B-16-17
Staubeindämmungsfilter des Schmutzaufnahmebehälters................B-17
Einstellen des Hebels der Feststellbremse ........................................B-18
Motoröl ...............................................................................................B-18
Motor-Luftfilter ....................................................................................B-18
Plazierung der Automatsicherungen ..................................................B-18
Fehlersuche .......................................................................................B-19
Technische Daten ..............................................................................B-19