Kärcher KM 85/50 W P Comfort Manual page 20

 Draw off engine oil via the oil filler neck
using 6.491-538 oil-change pump.
 Fill motor oil into the oil fill neck.
Oil grade: see Technical Data
 Reinsert the oil dipstick.
 Wait at least 5 minutes.
 Check engine oil level.
Change the air filter
 Remove covering lid.
 Take out the filter inlay.
 Insert a new filter insert.
The filter lamella must point into the di-
rection of the locking cap.
 Attach the locking cap.
Clean or replace the spark plug
 Remove spark-plug connector.
 Unscrew and clean spark plug.
 Screw in cleaned or new spark plug.
 Push on spark-plug connector.
Empty fuel tank
 Open the device hood.
 Close the fuel supply.
Turn the rotating knob perpendicular to
the fuel tap.
 Press together the fuel hose from the
tank to the fuel tap.
20
English
 Loosen the hose clamp on the fuel tap.
 Remove the fuel hose.
 Open fuel filler cap.
 Hold the fuel hose over a suitable catch
bin and drain the fuel.
 If the tank is empty, reattach the fuel
hose to the stub of the fuel tap and in-
stall the hose clamp.
Checking roller brush
 Lock parking brake.
 Remove the waste container.
 Remove belts or cords from roller brush.
Replacing roller brush
Replacement is due if the brush roller can
no longer be adjusted and a visible deterio-
ration in sweeping performance caused by
bristle wear is evident.
Note
If the appliance is tilted backwards onto the
push handle, the fuel tank must not be filled
more than halfway.
 Comfort model: Rotate push handle
clock in an anti-clockwise direction.
Lock has been unlocked.
 Close fuel cock.
 Remove the waste container.
 Push appliance to the back onto the
push handle.
 Unscrew left and right locking screws.
 Remove the sweeping roll downwards.
Installation position of roller brush in direc-
tion of travel
 Insert new sweep roller and fasten it.
Note
When installing the new roller brush, en-
sure correct positioning of the bristle as-
sembly.
Make sure that the right angled clamping
plates are in proper position. They should
overlap the sweeping cylinder from above
and below.
Note
Once the new roller brush has been in-
stalled, the sweeping track must be read-
justed.
Check and adjust roller brush sweeping
track
 Raise the sweeper from the front and
drive it on to a smooth, even surface
covered with a visible layer of dust or
chalk.
 Lock parking brake.
 Let the sweeping roller rotate for ap-
prox. 15-30 seconds.
 Raise the sweeper at the front and drive
it towards the side.
The sweeping track should have an even
rectangular shape which is between 30 and
40 mm wide.