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Extraordinary Maintenance - Stiga SHT 660 K Gebrauchsanweisung

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  • DEUTSCH, seite 52
Replace  the  filter  element  (3)  and  the  cover  (2) 
and tighten the knob (1).
4.4 CHECKING THE SPARK PLUG
Periodically  remove  and  clean  the  spark  plug 
using  a  metal  brush  to  get  rid  of  any  deposits 
(Fig. 9).
Check  and  reset  the  correct  distance  between 
the electrodes (Fig. 9).
Replace the spark plug and fasten it firmly using 
the supplied wrench.
The  spark  plug  must  be  replaced  with  one  with 
the  same  characteristics  whenever  the  elec-
trodes have burnt or the insulation has worn, and 
in any case every 100 working hours.
4.5 LUBRICATING THE REDUCTION GEAR
(Fig. 10)
Every  20  working  hours,  top  up  the  level  with 
special  molybdenum  bisulphur  lubrication,  in-
jecting it into the lubricator (1).
4.6 LONG PERIODS OF DISUSE
IMPORTANT If you are not going to use the ma­
chine for a period of more than 2­3 months, we
recommend you do a few things before putting it
away. This will make it easier when you want to
use the machine again and will also prevent per­
manent damage to the engine.
Before putting the machine away:
–    E mpty the fuel tank.
–    S tart the engine and run it idle until it comes to 
a halt, so that it uses up all the fuel that is left
in the carburettor.
–    W ait  for  the  engine  to  cool  down  before  stor-
ing the machine.
When you wish to start using the machine again, 
prepare  it  as  indicated  in  chapter  "1.  Preparing 
to work.

5. EXTRAORDINARY MAINTENANCE

This  work  must  be  done  exclusively  by  your 
Dealer.
All  and  any  operations  performed  in  unauthor-
ised centres or by unqualified persons will totally 
invalidate the warranty.
5.1 TUNING MINIMUM SPEED
WARNING!
when the engine is running idle, contact your
Dealer to correctly regulate the engine.
5.2 FUEL FILTER
Inside  the  fuel  tank  there  is  a  filter  which  pre-
vents impurities from entering the engine.
The filter should be replaced once a year by your 
Dealer.
5.3 CARBURETTOR ADJUSTMENTS
The carburettor is tuned by the manufacturer to 
achieve maximum performance in all situations, 
with a minimum emission of toxic gas in compli-
ance with the regulations in force.
In the case of poor performance, first check that 
the blades are not partially blocked or deformed, 
on the contrary ask your Dealer to check the car-
burettor and the engine.
5.4 BLADE MAINTENANCE
WARNING!
blades are not bent or deformed and that the
screws are adequately tightened.
5.4.1 Adjusting the blades
The  blades  are  subject  to  progressive  wear, 
which  is  noticed  by  a  decrease  in  the  trimming 
performance due to excessive play of the unit.
WARNING!
eration that can damage the blades and ma­
chine or cause injuries or accidents if not
done properly. For these reasons, it must al­
ways be done by your Dealer.
5.4.2 Sharpening the blades
It  is  necessary  to  sharpen  the  blades  when 
the  trimming  performance  decreases  and  the 
branches tend to stick together.
WARNING!
pair a blade which has blunt cutting edges.
IMPORTANT We recommend you take your ma­
chine to your Dealer for sharpening as he has the
required tools and suitable experience.
12
If the cutting device moves
Periodically check that the
Blade adjustment is an op­
Always replace and never re­

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Sht 675 k

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