Kärcher KMR 1250 B User manual

www.karcher.com 5.956–707 A2003105 (06/02)
KMR 1250 B
1.091-104
1.091-124

Français
Deutsch Betriebsanleitung für Anwender 3
Ersatzteilliste 228
User Instructions 28
Spare Parts List 228
Notice d’instructions pour l`utilisateur 53
Liste des pièces de rechange 228
Instrucciones de servicio 78
Lista de repuestos 228
English
Español
Hrvatski
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Uputstvo za upotrebu za korisnik 103
Popis rezervnih dijelo 228
Ðúêîâîäñòâî çà ðàáîòà 128
Ñïèñúê íà ðåçåðâíè àñòè 228
Slovensko Navodila za uporabo namenjena uporabniku 153
Seznam nadomestnih delov 228
Slovensky Návod na obsluhu pre pouívate a 178
Zoznam náhradných dielcov 228
ÅëëçíéêÜ Ïäçãßåò ëåéôïõñãßáò ãéá ôïõò ÷ñÞóôåò 203
Ëßóôá áíôáëëáêôéêþí 228

English User Instructions KMR 1250 B
28
Contents
For your safety ..........................................................................................................................................29
On behalf of the environment....................................................................................................................30
Intendedusage..........................................................................................................................................31
Sweeper functions ....................................................................................................................................31
Prior to initial start-up ................................................................................................................................32
Operating controls ....................................................................................................................................33
Preparing the sweeper for use..................................................................................................................34
Adjustingthedriver’s seat ....................................................................................................................................34
Filling the fuel tank ...............................................................................................................................................34
Openingthefueltap .............................................................................................................................................34
Starting the sweeper .................................................................................................................................35
Initialdriving trials.................................................................................................................................................35
Movingoffandsweeping.......................................................................................................................................35
Braking ................................................................................................................................................................36
Stoppingthesweeperand switchingoff ................................................................................................................36
Cleaningthe filter .................................................................................................................................................36
Emptyingthewaste hopper..................................................................................................................................37
Typical applications ...................................................................................................................................38
Sweepingon dryground .......................................................................................................................................38
Sweepingon dampor wetground.........................................................................................................................38
Shutting the sweeper down for longer periods..........................................................................................39
Transporting the sweeper .........................................................................................................................40
Cleaning and care.....................................................................................................................................40
Maintenance ..............................................................................................................................................41
Dailymaintenance ...............................................................................................................................................41
Maintenanceintervals...........................................................................................................................................41
Maintenance tasks ....................................................................................................................................42
Opening/closingthe unitcover .............................................................................................................................42
Disconnectingthebattery ....................................................................................................................................42
Checkingtyrepressures ......................................................................................................................................43
Checkingtheoillevel ...........................................................................................................................................43
Filling up with oil ..................................................................................................................................................43
Changing theengine oil ........................................................................................................................................43
Cleaningorreplacingtheaircleaner.....................................................................................................................44
Cleaningthe fuelfilter holder ................................................................................................................................44
Checking the hydraulic system ............................................................................................................................44
Checking the level of electrolyte in the battery......................................................................................................45
Chargingthe battery.............................................................................................................................................45
Replacing the sealing skirts .................................................................................................................................46
Replacingtheside brush......................................................................................................................................46
Replacelightunit .................................................................................................................................................46
Adjustingthesweepingpattern ............................................................................................................................47
Replacingthemainbrushroller ............................................................................................................................48
Replacingfuses ...................................................................................................................................................49
Replacingthedust filters......................................................................................................................................49
Troubleshooting.........................................................................................................................................50
Technical specifications ............................................................................................................................51

KMR 1250 B User Instructions English
29
For your safety Before you use this machine for the first time, please read
the following:
– these operating instructions
– the enclosed leaflet Safety Information No. 5.956-250.
Make sure that all information contained therein is complied
with.
!
Explosion hazard while refuelling!
nDo not fill up with fuel
– in an enclosed space
– while the engine is running.
nDo not smoke while refuelling the vehicle.
nFuel expands as it becomes warmer.
Do not fill the tank right up to the top. Leave a gap of at
least 1 cm under the bottom edge of the filler neck.
nWipe up any fuel they may have been spilt and ensure
that the cap is replaced firmly on the tank.
!
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!
nThe 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 unintentio-
nally, 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.

English User Instructions KMR 1250 B
30
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.
!
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.

KMR 1250 B User Instructions English
31
Intended usage This sweeper
– is intended to be used for sweeping outdoor surfaces,
– corresponds to application category BIA KAT ”U” for
dusts which present no health hazard
– should not be used in enclosed spaces,
– can only be used on public paths and highways if it has
been fitted with the StVZO Accessory Kit.
Sweeper functions Main components
Drive unit
– single-cylinder petrol engine (6.6 kW according to SAE J
6070a)
– continuously-adjustable hydraulic drive to rear wheels
– main brush and side brush driven via belts
– hydraulically controlled emptying of waste hopper
– high-performance generator
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

English User Instructions KMR 1250 B
32
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 transported 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 trans-
port. Undo the cord holding it in place.
Pushing the sweeper by hand
If you wish to move the sweeper without using its own drive:
nOpen the engine cover.
nFold the cover towards the rear; it will be held in place by
the pneumatic spring.
çTurn the lever for allowing freewheeling to position ”OFF”.
nRelease the handbrake.
nPush the sweeper to the required destination.
Note:
Do not move the sweeper over long distances without using
its own drive or at higher speeds than 10 km/h (e.g. whilst
being towed).
After moving the machine
nPut the parking brake on.
nSet free-wheeling lever to position ”ON”.
!

KMR 1250 B User Instructions English
33
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
17a. Drive pedal backwards
17b. Drive pedal forwards
18. Horn
19. Steering wheel
20. Open/close unit cover
* Function only operative in conjunction with 7 (two-handed operation).

English User Instructions KMR 1250 B
34
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: “Mainte-
nance”).
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.
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.
Filling the fuel tank
!
Explosion hazard while refuelling!
nDo not fill up with fuel
– in an enclosed space
– while the engine is running.
nDo not smoke while refuelling the vehicle.
nFuel expands as it becomes warmer.
Do not fill the tank right up to the top. Leave a gap of at
least 1 cm under the bottom edge of the filler neck.
nWipe up any fuel they may have been spilt and ensure
that the cap is replaced firmly on the tank.
nUse petrol, regular (lead-free).
Opening the fuel tap
nOpen the unit cover.
çOpen the fuel tap.
OPEN = lever pushed to side opposite to direction of
travel
nClose the unit cover.

KMR 1250 B User Instructions English
35
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.
nSet the throttle lever to the middle position
[ ] (operating speed).
nPull out the choke [ ] .
nTurn the ignition key to the start position [ ].
nWhen the engine has started running, set the control for
the choke back to its home position.
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 drive pedal
– depress right pedal, machine travels forwards
– depress left pedal, machine travels backwards.
Whichever drive pedal is being used at the time, the driving
speed can be uniformly and smoothly regulated backwards
or forwards. Avoid jerky operation of the pedals, as the
hydraulic system could suffer damage in this way.

English User Instructions KMR 1250 B
36
Braking
nRelease the drive pedal and the sweeper will brake auto-
matically.
Important note: Safety!
It is possible that the automatic braking function will not be
sufficient to bring the sweeper to a halt. In this case, either
make use of the parking brake as well or gently press the
drive pedal in the opposite direction to travel.
Stopping the sweeper and switching off
nRelease the drive pedal. The sweeper brakes automati-
cally 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 positi-
on and then remove it.
After the engine has been switched off, the filter is
automatically cleaned for approx. 10 seconds.
Cleaning the filter Automatic cleaning
nStop the sweeper and switch off the engine.
After the engine has been switched off, the filter is auto-
matically 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 [ ].
nBriefly operate the filter cleaning button , whereupon
the filter will be cleaned for a duration of approx. 10 secs.
nSet the sweeping mode lever back to dry [ ].
nContinue with cleaning task as before.

KMR 1250 B User Instructions English
37
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, [ + ].
When the hopper has reached the required height:
nTip the hopper outwards, [ + ].
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, + .

English User Instructions KMR 1250 B
38
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
For a small amount of normal dirt
non an even surface:
lower main brush
– set the lever to the middle position [ ] (minimum
brush wear).
non an uneven surface:
lower 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 possible 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 collisions.
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 B User Instructions English
39
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.
nClose the fuel tap.
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.
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 B
40
If the sweeper is going to be transported on the back of a
vehicle, it must be properly secured so that it cannot move
unintentionally.
nApply the parking brake.
nSecure the sweeper in the manner shown in the illustrati-
on only, using
– web belts
or
– ropes
or
– chains.
Transporting the sweeper
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.

KMR 1250 B User Instructions English
41
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).
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.
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.

English User Instructions KMR 1250 B
42
!
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 uninten-
tionally.
In order to prevent the engine from being started unintentio-
nally, proceed as follows after you have parked the
sweeper.
nPull out the ignition key.
nDisconnect the battery at 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 dropping down unintentional-
ly:
Maintenance tasks Opening/closing the unit cover
nTip the seat forwards.
nTake hold of the unit cover by the recessed grip and open
it by pulling upwards.
Disconnecting the battery
nOpen the unit cover.
nFirst of all disconnect the cable from the negative termi-
nal (–), then disconnect the positive terminal (+).
Note:
When reconnecting the battery, proceed in reverse order –
connect the positive terminal (+) first of all, then the negati-
ve terminal (–).

KMR 1250 B User Instructions English
43
Changing the engine oil
Checking tyre pressures nPark the sweeper on a level surface.
nCheck air pressure and adjust pressure as required.
Air pressure for front and rear wheels = 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 15W40 into the hole for the
dipstick.
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 tem-
perature.
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.

English User Instructions KMR 1250 B
44
1
2
Cleaning the fuel filter
holder Petrol is highly flammable and under certain con-
ditions it is also explosive. Do not smoke within
the working area and keep away from open flames
or sparks.
When the filter holder is refitted, check that it
seals properly and make sure the whole area is dry
before starting the engine.
nSet the fuel tap to OFF 1.
nDetach the filter holder and O-ring 2and wash it out in a
non-flammable or flame-resistant solvent. Allow the
holder to dry out thoroughly and then screw it on tight.
nSet the fuel tap to OPEN. Check that there is no leakage.
Cleaning or replacing the air
cleaner Do not run the engine without an air cleaner other-
wise 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. Other-
wise, blow compressed 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 was-
hing-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.
1
2
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.

KMR 1250 B User Instructions English
45
Safety information
which must be observed when handling batteries.
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. Ob-
serve 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 corrosive
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.
Note:
We recommend using the automatic battery charger (part
no. 6.654-116) for starter batteries. Use only battery
chargers with test certification mark.
Only undertake the charging procedure in dry, weather-
protected areas.
nBring machine to a halt, pull out ignition key
nTip seat forwards and open unit cover
nConnect positive post (+) to battery charger (red pole
clamp)
nConnect negative post (–) to battery charger (black pole
clamp)
nConnect battery charger to mains power supply and
switch on if applicable. Charging period as specified by
the battery charger manufacturer.
Charging the battery
Checking the level of
electrolyte in the battery Note: concerns only batteries which are not totally
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.