Kärcher KMR 1250 LPG User manual

5.959-012 A2004624 (11/02)
KMR 1250 LPG
1.091-106
1.091-116
www.karcher.com

Français
Deutsch Betriebsanleitung für Anwender Seite 3
User Instructions Page 25
Notice d’instructions pour l’utilisateur Page 47
Bruksanvisning for bruker Side 69
Bruksanvisning Sida 91
Instrucciones de manejo para usuarios Página 113
English
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KMR 1250 LPG User Instructions English
25
Contents Safety Regulations................................................................................................ 26
Liquefied gas ................................................................................................................ 26
On behalf of the environment ....................................................................................... 27
Safety Directives for LPG Motor Vehicles .............................................................28
Obligations of the factory management and the employee ......................................... 28
Maintenance by experts ............................................................................................... 28
Initial operation/operation............................................................................................. 28
In storage rooms and in repair workshops ................................................................... 29
Intendedusage ..................................................................................................... 30
Sweeperfunctions ................................................................................................ 30
Prior to initial start-up............................................................................................ 31
Unloading procedure.................................................................................................... 31
Pushing the sweeper .................................................................................................... 31
After pushing the sweeper............................................................................................ 31
Open cover.................................................................................................................... 31
Operatingcontrols................................................................................................. 32
Preparing the sweeperfor use............................................................................... 33
Installing/changing the gas cylinder............................................................................. 33
Adjusting the driver’s seat............................................................................................. 33
Starting the sweeper..................................................................................................... 34
Initial driving trials ......................................................................................................... 34
Moving off and sweeping.............................................................................................. 34
Braking.......................................................................................................................... 34
Stopping the sweeper and switching off....................................................................... 34
Emptyingthewaste hopper................................................................................... 35
Important information .................................................................................................... 35
Cleaningthefilter .................................................................................................. 35
Automatic cleaning ....................................................................................................... 35
Manual cleaning ........................................................................................................... 35
Typicalapplications............................................................................................... 36
Sweeping on dry ground .............................................................................................. 36
Sweeping on damp or wet ground ............................................................................... 36
Picking up larger items (sticks, tins, etc.) ...................................................................... 37
Overcoming obstacles .................................................................................................. 37
Shutting thesweeper down for longerperiods ....................................................... 37
Cleaningandcare ................................................................................................. 36
Maintenance ......................................................................................................... 38
First engine oil change ................................................................................................. 38
Initial inspection after 8 operating hours ...................................................................... 38
Daily maintenance........................................................................................................ 38
Maintenance intervals .................................................................................................. 38
Maintenance tasks................................................................................................ 39
Checking tyre pressures ............................................................................................... 39
Checking the oil level ................................................................................................... 39
Filling up with oil ........................................................................................................... 39
Changing the engine oil ............................................................................................... 40
Cleaning or replacing the air cleaner........................................................................... 40
Check gas installation .................................................................................................. 40
Checking the hydraulic system..................................................................................... 40
Safety information which must be observed when handling batteries. ....................... 41
Checking the level of electrolyte in the battery............................................................. 41
Charging the battery ..................................................................................................... 41
Replacing the sealing skirts ......................................................................................... 42
Replacing the side brush.............................................................................................. 42
Replace light unit .......................................................................................................... 42
Adjusting the sweeping pattern .................................................................................... 43
Replacing the main brush roller ................................................................................... 43
Replacing fuses ............................................................................................................ 44
Replacing the dust filters .............................................................................................. 44
Troubleshooting ..................................................................................................... 45
Technical specifications ........................................................................................ 46

English User Instructions KMR 1250 LPG
26
Safety Regulations General statutory regulations on safety and accident prevention, e.g. VBG 1
and VBG 12, must be observed in addition to the information contained in
these Operating Instructions. Always read the Operating Instructions first
before using the machine, even if you have worked with similar motor
sweeping machines before. It is essential to familiarize yourself with all
features and operating controls of the machine, as well as with their functions
before starting work.
– Check the gas system for leaks.
– Close the tank valve immediately if there is a leak. Put into operation
again only after the cause of the fault has been removed.
– Motor sweeping machines must be used only by suitable persons who are
trained to operate them, who have demonstrated their ability to operate
the machine to the contractor or his authorized agent and who are expres-
sly instructed by them to operate the machine.
– Use the motor sweeper only on those areas for which the contractor or his
authorized agent have given their approval.
– The operator must leave the machine only if the motor has been switched
off, the gas cylinder has been closed, the machine has been secured
against unwanted movement, the parking brake has been applied and the
key has been removed.
– The key should be removed to prevent unauthorized use of the machine.
– When transporting the machine the motor should be stopped and the gas
cylinder closed.
– The unit should be fastened securely by means of stop points and fixing
straps or ropes when it is being carried on a transport vehicle.
– The operator should use the machine only for its intended purpose. The
operator should taken local conditions into account when driving and give
consideration to third parties, in particular children, when working.
– It is forbidden to remain in an area of danger.
– Check that the machine is in perfect condition and operationally safe
before using it. The machine must not be used if it is not in proper working
condition.
– The warning and information signs on the machine give important informa-
tion for safe operation.
– Never allow other persons to ride or be carried on the machine.
– Riding machines must be set in motion only from the driver’s seat.
– The machine must be used only in areas where dust does not represent
a health risk (category “U” dust).
– Proper maintenance is essential for the prevention of accidents.
– Switch off the motor and remove the key before cleaning and servicing the
machine or replacing parts.
– When working on the electrical system always remove the battery connec-
tor or disconnect the battery (negative terminal).
– Suitable tools should be used for maintenance, repair and installation
work, etc. Maintenance work on the fuel gas system must be carried out
only by trained personnel.
– Do not sweep up burning or glowing objects.
– The motor sweeper should be protected from excessive heat above 70° C
(radiators, sunlight, etc.).
Liquefied gas
Only use liquefied gas cylinders with propellant gas filling of Quality A or B,
as specified in DIN 51 622, in accordance with ambient temperature.

KMR 1250 LPG User Instructions English
27
Note:
The use of domestic gas is absolutely forbidden!
For gas engines it is permitted to use liquefied gas mixtures of propane/
butane whose mixing ratio lies between 90/10 and 30/70.
Owing to the better cold start properties, it is preferable to use liquefied gas
with a high propane proportion for external temperatures below 0 °C (32 °F),
for evaporation begins to take place already at low temperatures.
Replacement parts
Please note that the use of other than original replacement parts can lead to
serious malfunctions and also to bad accidents, if such parts have not been
properly manufactured, or do not precisely replace the original part or lead to
unsafe operation of the appliance. Please always use only original replace-
ment parts.
Accessories
Wrong, non-suitable or defective accessories hamper the functioning of the
appliance. Their use is dangerous. Please use only original accessories.
Otherwise the right to claim under guarantee can be extinguished.
Fire hazard while sweeper is operating!
nKeep highly inflammable materials away from the engine and the exhaust
while the sweeper is operating.
Danger of toppling over on steep slopes!
The sweeper could topple over while it is being driven across or turning
round on a sleep slope.
nThe maximum gradient up or down which the sweeper can be driven is 18%.
nDo not drive at right angles to a slope with a gradient steeper than 10%.
Danger of toppling over if bends are negotiated at high speed!
The sweeper could topple over if it is driven round a bend at high speed.
Drive slowly round bends.
Caution when carrying out maintenance or repairs!
In order to prevent the engine from being started unintentionally, proceed as
follows:
nRemove the ignition key.
nDisconnect the battery at the negative terminal.
Caution while handling the battery!
Observe the safety information provided by the battery manufacturer.
Always use batteries and chargers recommended by KÄRCHER, otherwise
your warranty could be rendered invalid.
Caution while transporting the sweeper!
Make sure that the sweeper is secured properly if you are going to transport
it to a different location.
Do not use a forklift truck for loading purposes as it could damage the
sweeper.
nApply the parking brake.
nSecure the sweeper as shown in the illustration, using
– web belts or
– ropes or
– chains.

English User Instructions KMR 1250 LPG
28
On behalf of the
environment Caution, environmental hazard due to exhausted batteries!
Exhausted batteries should not be treated as domestic refuse. Make sure
that are disposed of in an environmentally appropriate manner.
Caution, environmental hazard due to engine oil or hydraulic fluid!
After you have changed the engine oil or hydraulic fluid, take the waste
product to a recognised collection point or to a waste disposal company.
Safety Directives
for LPG Motor
Vehicles
Liquified petroleum gases (fuel gases) are butane and propane or butane/
propane mixtures. They are supplied in special cylinders. The working pres-
sure of these gases is dependent on the outside temperature.
Caution:
Do not treat liquified petroleum gas in the same way as petrol. Petrol vapori-
zes slowly. Liquified petroleum gas becomes gaseous immediately. The
danger of gas spreading in an enclosed area and igniting is therefore greater
than with petrol.
Therefore:
Be doubly careful; no open flames – ovens, storm lamps, etc. – do not smoke
in storage locations or when carrying out any kind of work on the LPG sy-
stem.
Obligations of the factory management and the employee
All persons handling liquefied gas have an obligation to acquire the know-
ledge regarding the characteristics of liquefied gas which is necessary to
execute their work free of danger. This booklet must always accompany the
sweeper.
Maintenance by experts
Fuel gas systems must be regularly checked by an expert, at least once a
year, for their functioning capability and freedom from leaks (as per ZH 1/57).
The inspection must be attested in writing. The bases for the inspection are §
33 and § 37 UVV (Accident Prevention Regulations) “Use of liquefied gas”
(VGB21 (Association of Superpower Station Operators)).
Initial operation/operation
– Gas may only be used from one cylinder. Using gas from several cylin-
ders simultaneously may result in liquified gas flowing from one cylinder
into another; this will create a non-permissible pressure increase when the
cylinder valve on the overfilled cylinder is subsequently closed (comp. B1
of these guidelines).
– When fitting full cylinders, the correct position of the cylinder is denoted by
“top”. Gas cylinders should be replaced carefully. When installing or
removing, the gas outlet connection fitting of the cylinder valve must be
sealed with a hexagon cap nut which is screwed down with a key.
– Never continue using gas cylinders which are leaking. Following all rele-
vant safety precautions, they should be emptied immediately in the open
air by releasing the gas and then marked as leaking.
When delivering or collecting damaged gas cylinders, the distributor or his
agent (filling station attendant or similar) should be informed immediately
in writing of the existing damage.
– When returning damaged gas cylinders, the distributor or his agent (filling
station attendant or similar) should be informed immediately in writing of
the existing damage.
– After connecting the cylinder, check for leaks using a foaming agent.
– The valves should be opened slowly. They must not be opened or closed
with the aid of striking tools.
In the event of liquified petroleum gas catching fire use only carbon dioxi-
de powder-type fire extinguishers or carbon dioxide gas extinguishers.

KMR 1250 LPG User Instructions English
29
– The entire LPG system must be monitored continuously to ensure that it is
in a safe operating condition and, in particular, is not leaking. The vehicle
must not be used if the gas system is leaking.
– The cylinder valve must be closed before disconnecting the pipe or hose
connection. The connection nut on the cylinder must be opened slowly
and only slightly at first, otherwise the gas which is still under pressure in
the line will flow out spontaneously.
Caution:
Liquified gas which comes into contact with skin causes frostbite!
– Following disassembly, the lock nut must be screwed firmly onto the
connecting thread.
– Soap water, a soap bubble solution or other foaming agents should be
used when testing for leaks. It is forbidden to inspect the LPG system
using a naked flame.
– The installation directions of the manufacturer should be observed when
replacing individual system parts. The cylinder and main shut-off valves
should be closed when doing this.
– The condition of the electrical system of LPG vehicles should be monito-
red continuously. Sparks may cause explosions if system parts which
convey gas are leaking. If an LPG vehicle has been stored for a prolonged
period the storage room should be thoroughly ventilated before putting the
vehicle or its electrical systems into operation.
– The Industrial and Commercial Association and the responsible Trade
Supervisory Office must be informed immediately of any accidents which
occur in connection with gas cylinders or the liquified gas system. Dama-
ged components must be kept until the investigation has been concluded.
In storage rooms and in repair workshops
– The storage of power gas and liquefied-gas cylinders must be effected in
accordance with the stipulations of TRF 69 (Technical Regulations for
Liquefied Gas).
– LPG motor vehicles must not be stored in the same room with generator
vehicles.
– The cylinder and main shut-off valves should be closed immediately after
putting the motor vehicle into storage.
– The terms of the relevant legislation on garages and the relevant state
building regulations apply to the location and nature of the storage places
for fuel gas motor vehicles.
– The gas cylinders should be stored in special areas which are separate
from the storage rooms. Refer to “Handling and Storage of Filled Tanks” of
the Technical Principles of the “Statutory Regulation on Pressure Gas”.
– The electrical hand lamps which are used in these places must have a
closed, sealed globe and a rigid basket guard.
– When carrying out work in repair workshops the cylinder and main shut-off
valves should be closed and the fuel gas cylinders protected against heat.
Before interrupting or ending work a responsible person should check
whether all valves, in particular cylinder valves, are closed. Work involving
the use of naked flames, in particular welding and cutting work, must not
be carried out in the vicinity of fuel gas cylinders. Fuel gas cylinders must
not be stored in the workshops, even if they are empty.
– The storage rooms and workshops must be well ventilated. It is important
to remember that fuel gases are heavier than air. They concentrate on the
ground, in repair pits and other floor recesses and may form explosive
gas-air mixtures.

English User Instructions KMR 1250 LPG
30
Intended usage This sweeper
– is intended for use as a sweeper of dirty surfaces in an outside environ-
ment,
– corresponds to Usage Category “U” for dust that is not injurious to health,
– can only be used on public paths and highways if it has been fitted with
the StVZO Accessory Kit.
Sweeper functions Main components
Drive
– driven by means of 1-cylinder petrol engine which is converted to operate
on liquefied petroleum gas (6.6 kW in compliance with SAE J 6070a)
– stepless hydraulic drive system to the rear wheels
– drive of main brush and side brush by means of belt drive
– hydraulically operated emptying of the waste hopper
– powerful dynamo
Sweeping mechanism
– main brush employing throw-over principle for particularly effective filling
of waste hopper
– floating main brush roller with adjustable height above ground
– quick-change mechanism for main brush
– side brush can be raised and swivels automatically
– bulk waste flap for picking up larger items (e.g. cigarette packs or drink
cans)
Filter system
– integrated dust extraction for main roller by means of radial turbine
– 2 circular filters with 2 x 3 m2effective surface area
– electric filter cleaner with automatic shaking mechanism

KMR 1250 LPG User Instructions English
31
Prior to initial
start-up Unloading procedure
Do not use a forklift truck for unloading as it could cause damage
to the sweeper.
The sweeper has been lashed onto a pallet to ensure that it can be transpor-
ted safely. The procedure for unpacking the sweeper is as follows:
1. Remove the wooden boards from the pallet and nail them onto the end of
the pallet (in front of the sweeper).
2. Detach the wires holding the sweeper in place at the ends of the pallet.
3. Knock away the blocks used for locking the wheels and use them for the
support of the wooden planks on the left and right.
4. Drive the sweeper off the pallet and down the ramp made from the boards.
5. The side brush has been tied to the chassis for transport. Undo the cord
holding it in place.
Pushing the sweeper
When you want to move the machine without automotive power
nOpen engine cover having previously disassembled seat, for which see
Chapter “Open cover”
çSet free-wheeling lever to position “OFF”
nRelease parking brake
nMove sweeper
Note:
Do not move the sweeper over comparatively long stretches or at speeds
over 10 km/h (e.g. when being towed).
After pushing the sweeper
nPut parking brake on.
nSet free-wheeling lever to position “ON”
Open cover
To open the cover the seat has to be removed.
nPull off spring connector 1and pull out rod 2.
nRemove driver’s seat
nOpen cover to engine by grasping the handle grip under the driver’s seat
and folding the cover up or backwards.
!

English User Instructions KMR 1250 LPG
32
Operating controls
1. Ignition lock
2. Choke
3. Throttle lever
4. Raise / lower RH side brush
5. Raise / lower main brush
6. Raise / lower LH side brush (optional)
7. Switch for two-handed operation
8. Operating hour counter
9. Lights
10. Bulk waste flap
11. Parking brake / Driving brake
12. Tip waste hopper *
13. Raise waste hopper *
14. Lower waste hopper *
15. Filter cleaning
16. Sweeping mode, wet / dry
17. Drive pedal
18. Horn
19. Steering wheel
* Function only operative in conjunction with 7 (two-handed operation).

KMR 1250 LPG User Instructions English
33
Preparing the
sweeper for use All directions given (left/right, front/rear) are as seen from the driver’s seat.
nCheck the oil level in the engine (see Chapter: “Maintenance”).
nCheck the amount of fuel in the tank and fill up, if required (see below).
nCheck the level of hydraulic fluid and top up, if required (see Chapter:
“Maintenance”).
nCheck the air pressure in the tyres (see Chapter: “Maintenance”).
nInspect the brush roller and remove any string, rope, etc., that may be
caught up in the brushes.
nCheck the dust filter. If it is very dirty, operate the shaker to clean it off.
nEmpty the waste container.
nSlowly and carefully open shut-off valve of the liquefied-gas cylinder.
Caution: After a long standstill of the sweeper in an enclosed room, or if
a gas smell is apparent, ventilate well.
Adjusting the driver’s seat
The driver’s seat can be adjusted to suit persons of various heights.
nUnhook the rods in the seat tilting device.
çUndo the 4 screws.
nMove the seat to the desired position.
nTighten the screws and hook the rods back into the tilting device.
Installing/changing
the gas cylinder Note:
Observe the safety instructions concerning vehicles driven by liquefied
petroleum gas. Change of cylinder may be undertaken only by persons who
have been instructed on how to do it. Liquefied petroleum gas cylinders may
not be changed in garages or in spaces below ground level.
! Caution
Do not smoke or use a naked flame when changing the cylinder.
– Close the shut-off valve tightly on the liquefied petroleum gas cylinder.
– Hold the connection fitting firmly by the handle and carefully undo the
union nut a little at first.
Note: Union nut has a left-hand thread.
– Unscrew union nut completely and take off hose.
– Undo bent lever closure at the gas cylinder bracket
– Screw covering cap of valve immediately on to the empty cylinder.
– Replace empty cylinder by full one.
– There is a filter in the hose connection. Please check this for impurities
and clean it if necessary.
!Attention:
To ensure low-maintenance operation of the gas installation, the connection
union of the shut-off valve on the liquefied petroleum gas cylinder must stand
up vertically. Only type-tested replacement cylinders of 11kg content are to
be used.
– Close hose connection again as prescribed.
– Carry out an examination for leaks according to the maintenance instruc-
tions (see point 1.).
– Tighten bent lever closure firmly.
Note:
Ice accretion and foamy yellow deposits on the gas cylinder indicate a leaka-
ge.
Gas components
System components which are subject to wear or to ageing, pressure regula-
tors, pressure reduction valves, solenoid valve and hoses are to be replaced
after 8 years at the latest (in conformity with ZH 1/455 para. 6.3.).

English User Instructions KMR 1250 LPG
34
Starting the
sweeper Initial driving trials
Carry out initial driving trials in an area where there is plenty of free space
until you are familiar with individual operating controls and their functions.
All indications of direction (right/left, front/rear) are given in relation to the
direction of travel as seen from the driver’s seat.
nSit down on the driver’s seat.
The engine cannot be started until the driver has sat down (seat contact
switch). As soon as driver gets up from the seat, the engine switches off
(safety cut-out).
nMake sure that
– the LH side brush (if fitted) is in the raised position,
– the RH side brush is in the raised position,
– the main brush is in the raised position.
nPlace the speed lever in the middle position (operating speed)
nTurn the ignition key to position “1”
nPress the choke button for 2 - 5 s in order to fill the piping system.
nPut the ignition key in the Start position , the engine starts.
Moving off and sweeping
nLower the main brush and, if required, the side brush as well
.
nRelease the parking brake
– push the lever towards the front.
nSlowly depress the drive pedal
– towards front for travelling forwards
– towards rear for travelling in reverse.
The speed at which the sweeper travels forwards or backwards can be
continuously adjusted by depressing the drive pedal by the appropriate
amount.
Braking
nTake your foot off the throttle pedal and the machine brakes automatically.
Note: Safety!
There is a possibility that the automatic braking action is not sufficient to
bring the machine to a standstill. In this case please use the parking brake or
the reverse pedal as an additional aid!
Stopping the sweeper and switching off
nRelease the drive pedal. The sweeper brakes automatically and comes to
a halt.
nApply the parking brake .
nSet the throttle lever to minimum engine speed (to the rear).
nMake sure the main roller and side brush are raised so that
the bristles are not damaged.
nSwitching off
– Turn the ignition key counter-clockwise to the 0 position and then
remove it.
After the engine has been switched off, the filter is automatically clea-
ned for approx. 10 seconds.
nTightly close the shut-off valve of the gas cylinder immediately after
stopping the engine.

KMR 1250 LPG User Instructions English
35
Cleaning the filter Automatic cleaning
nStop the sweeper and switch off the engine.
After the engine has been switched off, the filter is automatically cleaned
for approx. 10 seconds.
Manual cleaning
While the sweeper is operating, the filter should be cleaned approx. every
15–30 minutes (depending on amount of dust).
nStop the sweeper.
nSet the sweeping mode lever to wet .
nSwitch on the electric filter cleaner for approx. 10 seconds .
nSet the sweeping mode lever back to dry .
nContinue with cleaning task as before.
Emptying the
waste hopper Important information
Injury hazard!
No person or animal should be allowed to stand in the area traversed by the hopper
while it is being emptied.
Danger of being crushed!
Do not reach into the shafts and linkage of the emptying mechanism.
Do not stand under the hopper.
Risk of sweeper toppling over!
If the sweeper is standing on a slope with a gradient of more than 5%, it could topple
over while the hopper is being emptied. The hopper should therefore only be emptied
when the gradient at the location where the sweeper is standing is less than 5% for
the direction in which it is facing.
nStop the sweeper.
nRaise the main brush
Note:Following steps can only be performed with the sweeper set to two-handed
operation .
nRaise the waste hopper,
1 + 2 +
When the hopper has reached the required height:
nTip the hopper outwards, 1+ 3 +
Note:
The hopper must have reached a certain minimum height before it can be tipped out.
The best position for emptying the hopper is when it has been fully extended.
As soon as you release the button for activating the tipping system, the hopper
automatically returns to its original position.
nLower the hopper,
1+ 4 +

English User Instructions KMR 1250 LPG
36
Typical applications
!
Caution while sweeping!
Do not sweep up packing bands, wires or similar items, otherwise the
sweeping mechanism will be damaged.
Do not sweep any burning/glowing objects.
Sweeping on dry ground
If there is a large amount of rubbish, such as several layers of leaves
nremove the bulk by hand before you start with the sweeper.
For a small amount of normal dirt
on an even surface:
nlower main brush
– set the lever to the middle position (minimum brush wear).
on an uneven surface:
nlower main brush
– set the lever to the lower position (increased brush wear).
nswitch on dust extraction
– set the switching mode lever to dry
nfor cleaning right up to the edges – lower the side brush .
At regular intervals:
nclean the filter,
nempty the waste hopper.
Notes:If you are sweeping up fine dust, use the side brush as little as possi-
ble as it will increase the amount of dust stirred up by the sweeper. If the
side brush encounters an obstacle, it automatically swivels back inside the
outer contours of the sweeper. You should nevertheless try to avoid collisi-
ons.
While the sweeper is operating, the filter should be cleaned approx. every
15–30 minutes (depending on amount of dust).
Sweeping on damp or wet ground
Follow the same procedure as for sweeping on dry ground. In order to protect
the filter from moisture
nswitch off the dust extraction
– set the sweeping mode lever to wet .
At regular intervals:
nempty the waste hopper.

KMR 1250 LPG User Instructions English
37
Picking up larger items (sticks, tins, etc.)
Caution!
When the bulk waste flap is open, stones or grit could be thrown at the front
by the main brush. Make sure therefore that when you open the flap no
persons, animals or property are endangered.
nOpen the bulk waste flap by pulling back the corresponding lever.
nDrive over the items to be picked up, at low speed and with the bulk waste
flap open.
Note:
In order to avoid stirring up dust unnecessarily, close the bulk waste flap
again as soon as possible.
Overcoming obstacles
Obstacles up to 5 cm in height
– can be driven over without any problems. Before you do so, open the bulk
waste flap and raise the main brush.
Obstacles more than 5 cm in height
– can be only be driven over with the aid of a suitable ramp.
If you do not intend to use the sweeper for a longer period of time (e.g.
during the winter), please observe the following.
nIt is most important that the main brush and side brush(es) are kept raised
in order to avoid damage to the bristles.
nClean the interior and exterior of the sweeper.
nChange the engine oil (see Chapter: “Maintenance”).
nStore the sweeper in a protected environment and ensure that it cannot
roll away.
nRemove the ignition key.
nRemove the gas cylinder
nDisconnect the battery.
nCharge the battery with a suitable charger approx. every two months (see
Chapter: “Maintenance”).
Shutting the
sweeper down for
longer periods

English User Instructions KMR 1250 LPG
38
Cleaning and care Before you carry out any cleaning or general maintenance tasks,
nPark the sweeper and switch off the engine.
Cleaning the inside of the sweeper:
You can clean out the inner parts of the sweeper by blowing them through
with compressed air.
Cleaning the outside of the sweeper:
The outside of the sweeper can be wiped off with a damp cloth. Do not use
any aggressive cleaning agents which might cause damage to the plastic
components.
Maintenance First engine oil change
!
Caution!
When an engine is new, it is subject to increased abrasion. In order that the
engine does not suffer any damage, we recommend that you change the
engine oil and the oil filter after the first 8 operating hours.
Initial inspection after 8 operating hours
!
Caution!
In order to ensure that your sweeper functions safely and reliably, it should
undergo an initial inspection after approx. 8 operating hours. The inspection
should be carried out by an authorised service agent.
nCheck all Bowden cables and make adjustments where necessary.
nChange the engine oil.
nCheck that there are no leaks in the hydraulic system and all components
function correctly.
nCheck that the parking brake functions correctly.
nCheck the air pressure in the tyres (correct level: 6 bar).
nCheck the gas piping system for leaks.
Daily maintenance
nCheck the engine oil level.
nCheck the tyre pressure (correct level: 6 bar).
nInspect the brush roller and remove any string, rope, etc., that may be
caught up in the brushes.
nCheck the dust filter. If it is very dirty, operate the shaker to clean it off.
nEmpty the waste container.
nCheck gas hose for damage and threaded joints in the piping for firm
seating.
Maintenance intervals
Keep to the service intervals set out in the maintenance booklet so that your
sweeper functions reliably and you retain the full benefit of the warranty.
The maintenance booklet (Order-no. 5.950-533) can be found in the tool
compartment on the sweeper (under the bonnet).
The necessary maintenance tasks should be carried out by an authorised
service agent.

KMR 1250 LPG User Instructions English
39
!
Safety information applicable to maintenance tasks
Before you begin any maintenance tasks, please read the enclosed leaflet
Safety Information No. 5.956-250.
!
Caution! Make sure engine cannot be started unintentionally.
In order to prevent the engine from being started unintentionally, proceed as
follows after you have parked the sweeper.
nPull out the ignition key.
nOpen the unit cover.
nFirst of all disconnect the cable from the negative terminal (–), then dis-
connect the positive terminal (+).
Note:
When reconnecting the battery, proceed in reverse order – connect the
positive terminal (+) first of all, then the negative terminal (–).
The necessary maintenance tasks or daily inspections can be carried out with
the bonnet raised.
!
Injury hazard!
Do not open the bonnet until the motor has been switched off.
!
Burns hazard!
Take care not to touch the exhaust when you open the bonnet.
!
Injury hazard!
çIf you need to work under the waste container while it is in the raised
position, you must first of all secure the container to prevent it from drop-
ping down unintentionally:
Maintenance tasks Checking tyre pressures
nPark the sweeper on a level surface.
nCheck the air pressure in each tyre and correct it where necessary.
Air pressure for front and rear tyres = 6 bar.
Checking the oil level
nPark the sweeper on a level surface.
çPull out the dipstick.
nWipe the dipstick clean and re-insert it in the filler hole.
nPull out the dipstick again and check the result.
The oil level should be between the MIN and MAX marks.
If the oil level is below MIN – top up with oil.
If the oil level is above MAX – drain off the surplus.
nInsert the dipstick back into the filler hole.
Filling up with oil
nPour engine oil type SAE 15 W 40 into the hole for the dipstick.

English User Instructions KMR 1250 LPG
40
Changing the engine oil
Caution! Danger to the environment from engine oil
After carrying out an oil change, ensure that the waste oil is passed to an
appropriate collection point or official disposal company.
Caution,
nRun the engine until it reaches its normal operating temperature.
nMake sure the sweeper is standing on a level surface.
nOpen the unit cover.
nPlace a drip pan under the engine.
çHold the end of the drain tube over the drip pan and let the old oil run out.
nClose off the end of the drain tube again.
nPour engine oil into the filler hole.
Capacity = 1.1 litres
nCheck the oil level with the dipstick – see “Checking the oil level” .
nWipe up any oil spillage and dispose of the waste oil appropriately.
Cleaning or replacing the air cleaner
Do not run the engine without an air cleaner otherwise this will
lead to increased wear on the engine
The air cleaner must be washed out more frequently if the engine is run in
particularly dusty environment.
Do not wash the air cleaner in petrol or a cleaning solvent with a
low flash point.
nPaper insert 1: Replace the insert if it is very dirty. Otherwise, blow com-
pressed air through the insert from the inside to out or knock it against a
hard surface. Do not brush it off, otherwise the dirt will be compacted
between the fibres.
nFoam insert 2: Wash out the insert in a solution of washing-up liquid and
warm water. Rinse it out and allow it to dry out thoroughly. Immerse the
clean insert in engine oil and squeeze out the excess fluid. If too much oil
is left in the insert, smoke will be given off by the engine when it is next
started.
Check gas installation
nCheck the gas hose for damage daily and the threaded joints in the piping
for firm seating.
nHalf-yearly or every 100 operating hours check the piping system for
leakage.
nAnnually check the gas installation, clean the evaporator/pressure regula-
tor and replace the seals.
nCheck that the CO content in the exhaust gas is < 0.5 % when idling and
at full load.
Checking the hydraulic system
nCarry out a visual inspection. If there is any loss of fluid from the hydraulic
unit, cylinder or hoses, call KÄRCHER Customer Service.
1
2

KMR 1250 LPG User Instructions English
41
Safety information which must be observed when handling batte-
ries.
Comply with the user instructions and ensure that these are displayed at the
charging station. Before the operator carries out any work on batteries, he/
she must have received proper instruction from a suitably qualified person.
Wear safety goggles and protective clothing when working on batteries.
Observe accident prevention regulations, as well as DIN VDE 0510, VDE
0105 Part 1.
Smoking is forbidden!
Make sure that there are no naked flames, other source of heat or sparks in
the proximity of the battery, otherwise there is a danger of explosion or fire.
If electrolyte comes into contact with skin or eyes, rinse the affected area
with plenty of clean water. The metal parts of battery cells are permanently
live. Therefore do not place any tools or other objects on top of the battery.
Explosion and fire hazard! Avoid short-circuits.
Warning! The metal parts of battery cells are permanently live. Therefore do
not place any tools or other objects on top of the battery.
Electrolyte is highly corrosive. Under normal operating conditions it is not
possible for anything to come into contact with the electrolyte. If the battery
housing is destroyed, the bound electrolyte that leaks out is just as corrosi-
ve as liquid electrolyte.
Return to manufacturer!
Exhausted batteries bearing this symbol are a re-usable resource which
should be recycled accordingly. Exhausted batteries that are not intended to
be recycled must be disposed of as hazardous waste in compliance with all
relevant regulations.
Checking the level of electrolyte in the battery
Note: Applies only to batteries that are NOT maintenance-free.
Check the level of electrolyte in batteries filled with acid. Make sure the
battery is fully charged before you carry out the check. If required:
nTop up each cell with distilled water until the lead plates are covered by
approx. 1 cm of liquid.
Charging the battery
Note:
Only use a regulated charger that is suitable for use with starter batteries and
is capable of delivering a charging current of 4 - 6 A.
Only use a battery charger with a certification mark!
Only undertake the charging procedure in dry, weather-protected areas.
nStop the sweeper and remove the ignition key.
nTilt the seat forwards.
nConnect the positive terminal (red clamp) to the charger.
nConnect the negative terminal (black clamp) to the charger.
nConnect the charger to the mains and switch it on. The charging time is
specified by the manufacturer of the charger.
Battery

English User Instructions KMR 1250 LPG
42
Direction of travel
Replacing the sealing skirts
The sealing skirts fulfil an important function. They retain the partial vacuum
in the area round the brushes which is essential so that the sweeper can
function properly. They ensure that sweeping can take place without clouds
of dust being formed at the same time. If the sealing skirts are damaged or
worn out, they must be replaced immediately.
nPark the sweeper and switch off the engine.
nRemove the retaining screws and detach the sealing skirts.
nFit new skirts, and align them as follows:
The side skirts should be adjusted so that they clear the ground by 1–3
mm.
The rear skirt should be adjusted so that they clear the ground by 1–5
mm.
nThe front skirt cannot be adjusted. Replace the skirt as soon as you see
signs of excessive wear.
nTighten the retaining screws.
Replacing the side brush
nPark the sweeper and switch off the engine.
nRaise the side brush.
nRemove the three hex-socket bolts (5 mm Allen key).
nDetach the side brush.
nPush the new side brush onto the drive pin.
nRefit and tighten the three hex-socket bolts.
Replace light unit
nStop the machine and turn it off
nTake out the ignition key
nUndo 6 screws S on the panel
nRemove the panel 1
nUnscrew the Phillips screw between the supports of the lamp holder on
the defective headlight
nTurn the lens of the defective headlight anti-clockwise about 1/4 of a turn
2and take out reflector housing 3
nReplace light unit
nInsert reflector housing with new light unit in panel again from below and
secure with about 1/4 of a turn clockwise. Make certain it engages proper-
ly, the label
HALOGEN on the headlight glass must be able to be read horizontally 4
nScrew in again the screw between the supports, then secure the panel
with the 6 screws.