Karcher STH 8-66 - Manual (Page 16)

- 5
Once in the season:
– Get the machine checked and serviced in an authorised workshop.
Every time before use:
– Check oil level; refill engine oil if required (see "Engine Instruction Booklet").
– Check whether all screw joints are tight; tighten them, if necessary.
– Check safety equipment.
– Electric starter: Check the cables and connectors on the engine.
1) See "Engine Instruction Booklet"
2) Get these jobs done only from an author-
ised workshop
3) First oil change after 5 operating hours (h)
4) Change oil every 25 operating hours (h) if
the machine is operated under heavy load
or if the ambient temperature is high
ƽ 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.
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 troublefree.
Caution
Risk of damage! Do not clean the appliance
with a high pressure water jet.
Î
Park the machine on solid, even and
horizontal ground.
Î Remove dirt that is stuck.
Î Clean the machine by letting in flowing
water through the discharge shaft and
let it dry.
Î Clean the engine using cloth and brush.
Lubricate all rotating and moving parts with
some light oil.
ƽ
Danger
Risk of explosion! Never exceed the max.
tyre pressure of 1.4 bar/20 PSI.
Recommended air pressure is approx. 1 bar
See "Engine Instruction Booklet".
Figure 2
Î
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").
Î 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"):
Î
Turn the auger drive on for 10 seconds
with the engine running.
Î Release the clutch lever, the auger
must stop rotating.
Figure 1
Î
Set the switching lever to the fastest for-
ward gear (highest number).
Î Push the machine forward after releas-
ing the clutch lever for travel drive.
Î While pushing, set the switching lever
to the fastest reverse gear and then to
the fastest forward gear.
Î If you feel any resistance during push-
ing or changing the gears, reduce the
clutch tension (see "Changing the
clutch tension setting").
Î 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").
Î If the setting is still not proper, repeat
the procedure.
Figure 2
For clutch cables with adjustment plates for
travel drive (4) or for auger drive (5):
Î
Tightening: Loosen screw (A) depend-
ing on the adjustment plate, slide ad-
justment plate down and reattach the
screw (A).
Î Loosening: Loosen screw (A) depend-
ing on the adjustment plate, slide ad-
justment plate up and reattach the
screw (A).
Figure 7
Î
Set the switching lever to the fastest for-
ward gear.
Î Loosen screw (A) and press the holder
downward till the switching tension is
tight.
Î Now tighten screw (A) again.
Î Check correct setting.
Note: This setting is required only if the
fastest gear (forward or reverse) cannot be
put.
Maintenance and care
Maintenance schedule
Maintenance tasks After using for 25 h 50 h after the sea-
son
depending on
requirements
Clean the discharge shaft, snail and snail casing. x
Change oil 3) 1) x 4)
Lubricate all moving and rotating parts x x
Clean the spark plugs 1) x
Get the spark plugs replaced 2) x
Check air pressure in the tyres; increase it, if required x x
Clean the exhaust and the air cooling system 1) x x
Grease the drive shaft 2) x
Check clutch setting; readjust, if required x
Get the carburetor settings checked 2) x
Check clearing plate; replace worn out clearing plate x
Check landing skids; replace worn out landing skids in pairs x
Replace tank lock x
Get the exhaust checked 2) x
Maintenance Works
Accessories and Spare Parts
Cleaning the device
Lubricate the machine
Adjust the air pressure in the tyres
Maintenance jobs for the engine
Check and adjust the clutch for the au-
ger drive
Check and adjust the clutch for the au-
ger drive
Changing the clutch tension setting
Setting the switching lever
16 EN