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GBC 540C PRO | GBC 551C PRO
el, so operate the machine at the lowest engine
speed necessary to accomplish the task. During
a working day, you shall take frequent and ade-
quate breaks to prevent damage from vibration
and damage to the ears. Prolonged exposure to
vibrations can cause injuries and neurovascular
disorders (also called "Raynaud's syndrome" or
"white hand"), especially to people suffering
from circulation disorders. The symptoms can re-
gard the hands, wrists and fingers and are shown
through loss of sensitivity, torpor, itching, pain
and discoloring of or structural changes to the
skin. These effects can be worsened by low am-
bient temperatures and/or by gripping the hand-
grips excessively tightly. If the symptoms occur,
the length of time the machine is used must be
reduced and a doctor consulted.
WORKING AREA HAZARDS
Thoroughly inspect the whole work area and use
a rake or yard brush to manually loosen debris and
remove anything that could be projected by the
machine and become a hazardous source (stones,
branches, iron wire, bones etc.) or could be entan-
gled in the cutting head. Check that there are no
bystanders or pets within at least 15 meters of
the machine's range of action (Fig. 6).
Do not direct the silencer and therefore the ex-
haust fumes towards flammable materials.
Always check for any objects that may block the
air intake screen before beginning to work. A
clogged air intake reduces the machine's perfor-
mance and increases the engine's working tem-
perature, which can result in engine failure. Do
not operate the engine in a confined space where
dangerous carbon monoxide fumes can develop.
Don't operate the machine near open windows.
Work only in daylight or with good artificial light
in good visibility conditions. Try not to cause
any disturbance. Use this machine at reasonable
times of the day only (not early morning or late
evening when the noise could cause disturbance).
When working in dry dusty soil conditions, it is
recommended to moisten the surface slightly and
/ or use an appropriate dust mask.
Take on a firm and well-balanced position. Where
possible, avoid working on wet, slippery ground
or in any case on uneven or steep ground that
does not guarantee stability for the operator.
PRODUCT SPECIFICATIONS
INTENDED USE
This machine was designed and manufactured for
cutting grass and growth e.g. in lawns, pathways,
car parks and roads.
Any other use differing from the above-men-
tioned ones could be hazardous, harm people
and/or damage things and the machine.
IMPROPER USE
The machine must not be used for cutting hazard-
ous materials, e.g. accumulation of flammable or
explosive products, lit cigarettes, pieces of glass,
sharp objects, metal objects, stones and any other
object that could be dangerous to the operator
and others.
Examples of improper use may include, but are
not limited to:
• Aiming the cutting head towards persons and/
or animals;
• Using the machine without the accessories spe-
cifically supplied by the manufacturer for specif-
ic uses, or use of accessories in a way not intend-
ed in these instructions;
• Use of the machine by more than one person.
TECHNICAL DATA
Article number
Model
Cylinder displace-
ment
Bore
Stroke
Idle speed
Maximum engine
kW / hp 1,3 / 1,7
power
Maximum engine
speed
Speed of output
shaft
Spark plug
Electrode gap
Fuel tank capacity
Weight without
fuel, cutting
attachement and
guard
Noise emissions
Sound power level,
dB (A)
measured
Uncertainty
dB (A)
Sound power level,
dB (A)
guaranteed
Equivalent vibration levels
Handles equipped
with trimmer head,
(left, right)
Handles equipped
with brush blade,
(left, right)
Uncertainty
Accessories
Trimmer head
Trimmer line
Ø / mm
Brush blade
mm
English | 11
46 330
47 628
GBC
GBC
540C
551C
PRO
PRO
cc
39,8
50,8
mm
40
45
mm
32
32
2.800 ±
2.800 ±
rpm
280
280
1,9 / 2,6
rpm
9.800
11.000
rpm
7.000
8.500
BPMR6A
BPMR6A
mm 0,5 - 0,7
0,5 - 0,7
L
1
0,75
kg
8,9
8,9
112
113
3
109
115
4,70
5,94
m/s²
6,72
4,81
4,61
8,90
m/s²
4,62
5,46
m/s²
1,5
1,5
Tap & Go
Tap & Go
2.5
2.5
255
255
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