Maintenance Works; Troubleshooting - Kärcher STH 5.56 W Originalbetriebsanleitung

Maintenance Works

Danger
Risk of injury!
Before doing any work on the machine:
Switch off engine.
–
Wait till all the moving parts have come
–
to a stand-still.
Pull out the ignition key and the ignition
–
plug.
Allow engine to cool down.
–
Accessories and Spare Parts
Only use accessories and spare parts
which have been approved by the manu-
facturer. The exclusive use of original ac-
cessories and original spare parts ensures
that the appliance can be operated safely
and trouble free.
Cleaning the device
Caution
Risk of damage! Do not clean the appliance
with a high pressure water jet.
 Park the machine on solid, even and
horizontal ground.
 Remove dirt that is stuck.
 Clean the machine by letting in flowing
water through the discharge shaft and
let it dry.
 Clean the engine using cloth and brush.
Lubricate the machine
Lubricate all rotating and moving parts with
some light oil.
Adjust the air pressure in the tyres
Danger
Risk of explosion! Never exceed the max.
tyre pressure of 1.4 bar/20 PSI.
Recommended air pressure is approx. 1
bar
Maintenance jobs for the engine
See "Engine Instruction Booklet".
Check and adjust the clutch for the au-
ger drive
Figure 2
 Release clutch lever (1). Clutch tension
(3) must be without tolerance but
should also not be too tight. Otherwise,
change the setting (see "Changing the
clutch tension").
 It should be possible to press down the
clutch lever (1) completely. Otherwise,
the clutch tension is too high and must
be reduced (see "Changing the clutch
tension").
Addition checks (see "Working with the ap-
pliance"):
 Turn the auger drive on for 10 seconds
with the engine running.
 Release the clutch lever, the auger
must stop rotating.
Check and adjust the clutch for the au-
ger drive
Figure 1
 Set the switching lever to the fastest for-
ward gear (highest number).
 Push the machine forward after releas-
ing the clutch lever for travel drive.
16
 While pushing, set the switching lever
to the fastest reverse gear and then to
the fastest forward gear.
 If you feel any resistance during push-
ing or changing the gears, reduce the
clutch tension (see "Changing the
clutch tension setting").
 While pushing the machine, keep the
clutch lever of the travel drive de-
pressed. The wheels must be locked.
Otherwise tighten the clutch tension
(see "Changing the setting of the clutch
tension").
 If the setting is still not proper, repeat
the procedure.
Changing the clutch tension setting
Figure 2
For clutch cables with adjustment plates for
travel drive (4) or for auger drive (5):
 Tightening: Loosen screw (A) depend-
ing on the adjustment plate, slide ad-
justment plate down and reattach the
screw (A).
 Loosening: Loosen screw (A) depend-
ing on the adjustment plate, slide ad-
justment plate up and reattach the
screw (A).
Replacing shearing bolts
Figure 5
The snails (3) are fastened to the drive
shaft (4) using shearing bolts (1) and safety
splints (2). The bolts are designed in such
a way that they break (shear off) when the
snail comes in contact with foreign bodies.
This protects the machine against damag-
es. These parts should only be replaced by
original spare parts (Spare bolts and safety
splints are included in standard delivery).
 Remove broken bolts (1) and safety
splint (2); clean and lubricate the fas-
tening point.
 Use new shearing bolts and new safety
splint.
Replacing the clearing plate
Figure 4
 Remove screws (5) and nuts (6).
 Replace the clearing plate (4).
 Fasten new clearing plate to the casing
using screws and nuts.
Replacing the landing skids
Figure 4
 Remove nuts (2) and screws (3).
 Loosen the landing skids (1) on both the
sides of the casing.
 Adjust the new landing skids (see "Ad-
justing the landing skids").
6
-
EN

Troubleshooting

Danger
Risk of injury!
Before doing any work on the machine:
Switch off engine.
–
Wait till all the moving parts have come
–
to a stand-still.
Pull out the ignition key and the ignition
–
plug.
Allow engine to cool down.
–
Note:Some of the functioning problems
have simple causes and you can rectify
them easily. Call up an authorised work-
shop in case of doubt or if mentioned ex-
plicitly.
Note: Repairs should only be done by au-
thorised workshops using original spare
parts.