Bosch 4 V-LI Original Instructions Manual - Page 12
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24 | English
Starting Operation
Inserting the Battery
Use only original Bosch lithium ion batter-
ies with the voltage listed on the nameplate
of your power tool. Using other batteries can
lead to injuries and pose a fire hazard.
Insert the charged battery 3 from the rear into
the base of the power tool. Press the battery
completely into the base until the red stripe can
no longer be seen and the battery is securely
locked.
Switching On and Off
To start the machine, firstly press on the safety
switch 1 next to the symbol
Then press and hold the On/Off switch 2.
To switch off the machine, release the On/Off
switch 2. Activate the safety switch 1 by press-
ing on it next to the symbol .
Note: For safety reasons, the On/Off switch 2
cannot be locked; it must remain pressed during
the entire operation.
Controling the Stroke Rate
Increasing or reducing the pressure on the
On/Off switch 2 enables stepless stroke-rate
control of the switched-on machine.
Light pressure on the On/Off switch 2 results in
a low stroke rate. Increasing the pressure also
increases the stroke rate.
The required stroke rate is dependent on the
material and the working conditions and can be
determined by a practical trial.
Reducing the stroke rate is recommended when
the saw blade engages in the material as well as
when sawing plastic and aluminium.
After longer periods of work at low stroke rate,
the machine can heat up considerably. Remove
the saw blade from the machine and allow the
machine to cool down by running it for approx.
3 minutes at maximum stroke rate.
1 609 929 W85 | (15.7.10)
Temperature Dependent Overload Protection
When using the machine as intended for, it can-
not be subject to overload. In case of excessive
load or when not within the permitted battery
temperature range of 0–70 °C, the speed is re-
duced or the machine switches off. With re-
duced speed, the machine will not run at full
speed again until after reaching the permitted
battery temperature or when the load is re-
duced. In case of automatic shut-off, switch the
machine off, allow the battery to cool down and
then switch the machine on again.
Protection Against Deep Discharging
The lithium ion battery is protected against
deep discharging by the "Electronic Cell Protec-
to deactivate it.
tion (ECP)". When the battery is empty, the ma-
chine is switched off by means of a protective
circuit: The inserted tool no longer rotates.
Working Advice
When sawing small or thin workpieces, al-
ways use a firm support.
Contact Protector
The contact protector 13 attached to the casing
prevents accidental touching of the saw blade
during the working procedure and may not be
removed.
Plunge Cutting (see figure I)
Plunge cuts may only be applied to soft ma-
terials, such as wood, gypsum plaster
boards, etc.!
Use only short saw blades for plunge cutting.
Plunge cutting is possible only with the mitre an-
gle set at 0°.
Place the machine with the front edge of the
base plate 7 on to the workpiece without the
saw blade 11 touching the workpiece and
switch on. For machines with stroke rate con-
trol, select the maximum stroke rate. Firmly
hold the machine against the workpiece and by
tilting the machine, slowly plunge the saw blade
into the workpiece.
When the base plate 7 fully lays on the work-
piece, continue sawing along the desired cutting
line.
Bosch Power Tools