Bosch GST Professional 85 PB Original Operating Instructions page 11

OBJ_BUCH-689-001.book Page 11 Thursday, April 24, 2008 3:03 PM
For adjustment of precise bevel angles, the base
plate has adjustment notches on the left and
right at 0° and 45°. Swivel the base plate 9 to the
desired position according to the scale 15. Other
bevel angles can be adjusted using a protractor.
Afterwards, push the base plate 9 to the stop
toward the power cable.
Tighten the screw 16 again.
The splinter guard 14 can not be inserted for
miter cuts.
Offsetting the Base Plate (see figure D)
For sawing close to edges, the base plate 9 can
be offset to the rear.
Completely unscrew the screw 16 using the hex
key 6.
Take the base plate 9 off and remount it offset
again so that the screw 16 can be screwed into
the rear bolt hole 18.
Push the base plate 9 toward the positioning
pin/mark 17 until it engages. Now, tighten the
screw 16 again.
Sawing with the base plate 9 offset is possible
only with a bevel angle of 0°. In addition, the par-
allel guide with circle cutter 21 (accessory) as
well as the splinter guard 14 may not be used.
Sawdust Blower Device
With the air jet of the sawdust blower device 7,
the cutting line can be kept free of dust and chips.
Sawdust-blower setting I :
Low blow effect for sawing in metal and
operation with coolant/lubricant.
Sawdust-blower setting II :
Medium blow effect for sawing materials
with low chip removal rate, e.g., hard-
wood.
Sawdust-blower setting III :
Large blow effect for sawing materials
with high chip removal rate, e.g., soft-
wood, plastic, etc.
Bosch Power Tools
Starting Operation
Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the type plate of the
power tool.
Switching On and Off
To start the machine, press the On/Off switch 3.
To lock the On/Off switch, keep it pressed and
additionally push the lock-on button 4.
To switch off the machine, release the On/Off
switch 3. When the On/Off switch 3 is locked,
press it first and then release it.
Controlling/Presetting the Stroke Rate
(GST 85 PBE)
Increasing or reducing the pressure on the
On/Off switch 3 enables stepless stroke-rate
control of the switched-on machine.
Light pressure on the On/Off switch 3 results in
a low stroke rate. Increasing the pressure also in-
creases the stroke rate.
When the On/Off switch 3 is locked, it is not pos-
sible to reduce the stroke rate.
With the dial control for stroke rate preselection
2, the stroke rate can be preset and changed dur-
ing operation.
A – B: Low stroke rate
C – D: Medium stroke rate
E – F: High stroke rate
The required stroke rate is dependent on the ma-
terial and the working conditions and can be de-
termined 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 aluminum.
After longer periods of work at low stroke rate,
the machine can heat up considerably. Remove
the saw blade from the power tool and allow the
machine to cool down by running it for approx.
3 minutes at maximum stroke rate.
English | 11
1 609 929 N43 | (24.4.08)