ST. SpA BC 900 D Li 48, Operator'S Manual

Page: 33 / 44

EN - 14
To use the machine proceed as follows:
• always connect the machine to the correctly
fitted battery backpack (par. 6.1.2).
• when working, the machine must always be
firmly held in both hands, keeping the power
unit on the right of the body and the cutting
unit below the line of the belt (Fig. 14).
NOTE
During operation, the battery is
protected against total drainage with a
protection device that switches off the
machine and inhibits its operation.
NOTE
The battery power reserve (and therefore the
surface covered by vegetation that can be
mowed before recharging is required) depends
on many factors described at par. 7.2.1.
6.4.1 Work techniques
6.4.1.a Cutting line head
DANGER
Use ONLY nylon lines. The use of metal
lines, plastic coated metal lines and/or
lines that are not suitable for the head can
cause serious injuries and wounds.
a. Cutting motion (Scything)
Proceed at a steady pace, with a circular motion
similar to a traditional scythe, without tilting the
cutting line head during the operation (Fig. 15).
Start cutting at the correct height in a small
area, so as to achieve a uniform cutting
height keeping the cutting line head at a
constant distance from the ground.
For heavier cutting it can be useful to tilt the
cutting line head to the left by about 30°.
DANGER
Do not work in this way if there is the possibility
of causing objects to be thrown, which could
harm people, animals or cause damage.
b. Precision cutting (Trimming)
Keep the machine slightly tilted so that the
lower part of the cutting line head does not
touch the ground and the cutting line is at the
required point, always keeping the cutting
means at a distance from the operator.
c. Cutting near fences/foundations
Move the cutting line head slowly
towards fences, posts, rocks, walls, etc.
without hitting them hard (Fig. 16).
If the line strikes a solid object it could
break or become worn; if it gets tangled
in a fence it could break suddenly.
In any case, cutting around pavements,
foundations, walls, etc. can cause
greater wear than normal to the line.
d. Cutting around trees
Walk round the tree from left to right,
approaching the trunk slowly so as not to strike
the tree with the line and keeping the cutting
line head tilted forward slightly (Fig. 17).
Remember that the nylon line could lop off or
damage small shrubs and that the impact of the
nylon line against the trunk of bushes or trees
with soft bark could seriously damage the plant.
6.4.1.b Blade
Proceed using the machine as a traditional
scythe, with a circular movement of
about 60-90°, thus moving outside the
vegetation area, and so on (Fig. 18).
6.4.2 Adjusting the length of the
cutting line head during work
This machine is fitted with an
automatic line release head.
Head line length should be adjusted:
• when the line is consumed
and becomes shorter;
• when engine rotation seems
higher than normal;
• when cutting efficiency seems reduced.
To release new line:
• hit the cutting line head against the
ground (Fig. 19) with the throttle
control lever pressed fully down;
• line is automatically released and the line
cutting knife (Fig. 6.A) cuts the excess length.
6.5 OPERATING SUGGESTIONS
During use, it is advisable to remove cut
vegetation wrapped around the machine
at regular intervals to avoid the engine
overheating (Fig. 1.A) caused by grass trapped
under the cutting means guard (Fig. 1.E).
Proceed as follows:
1. stop the machine (par. 6.6);