Bosch GTM 12 JL Professsional Original Instructions Manual page 48

OBJ_BUCH-1688-004.book Page 48 Tuesday, July 9, 2013 11:59 AM
48 | English
Starting Operation
Switching On (see figure D)
– For starting operation, press the green ON pushbutton 2 (I).
Switching Off
– Press the red OFF pushbutton 1 (O).
To save energy, only switch the power tool on when using it.
Power Failure
The ON/OFF switch is a so-called non-voltage switch, which
prevents the power tool from restarting after a power failure
(e. g., when the mains plug is pulled during operation).
– To restart the power tool, press the green ON pushbutton
2 again.
Working Advice
General Sawing Instructions
 For all cuts, it must first be ensured that the saw blade
at no time can come in contact with the stops or other
machine parts.
Protect the saw blade against impact and shock. Do not sub-
ject the saw blade to lateral pressure.
Pay attention that the riving knife is in line with the saw blade.
Do not saw warped/bent workpieces. The workpiece must al-
ways have a straight edge to face against the parallel guide.
Always keep/store the push stick with the power tool.
Do not use the power tool for joining, grooving or cutting slots.
Long workpieces must be underlaid or supported at their free
end. (see figure E)
Position of the Operator (see figure
 Do not stand in a line with the saw blade in front of the
machine. Always stand aside of the saw blade. This pro-
tects your body against possible kickback.
– Keep hands, fingers and arms away from the rotating saw
blade.
Observe the following instructions:
– Hold the workpiece securely with both hands and press it
firmly against the saw table, expecially when working with-
out the guide.
– When sawing small workpieces, use the hold-down stick
provided.
Sawing
Sawing Straight Cuts
– Adjust the parallel guide 59 to the requested cutting width.
– (see "Adjusting the Parallel Guide", page 47)
– Position the workpiece on the saw table in front of the
blade guard 61.
– Adjust the correct saw blade height (see "Adjusting the
Saw Blade Height", page 47)
– Make sure that the blade guard is positioned properly.
It must always face against the workpiece while sawing.
– Switch on the machine.
– Saw through the workpiece applying uniform feed.
– Switch off the machine and wait until the saw blade has
come to a complete stop.
1 609 92A 0BP | (9.7.13)
Checking and Adjusting the Basic Adjustment
 Before any work on the machine itself, pull the mains
plug.
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use.
A certain level of experience and appropriate specialty tools
are required for this.
A Bosch after-sales service station will handle this mainte-
nance task quickly and reliably.
Adjusting the Clearance Indicator of the Parallel Guide
(see figure
– Use a workpiece or an object with an exactly defined width
x. The length of the object should approximately corre-
spond with the diameter of the saw blade.
– Slide the object under the blade guard 61 and position it
flush to the saw blade.
– Move the parallel guide 59 from the right side until it touch-
es the object, and then lock the parallel guide in this posi-
tion.
Checking:
The clearance indicator 67 must indicate the width x of the
object on the scale 63.
Adjusting:
– Loosen screw 68 with the slotted screwdriver provided
and align the clearance indicator exactly to the width x.
Adjusting the Tension Force of the Parallel Guide
(see figure
The tension force of the guide 69 on the parallel guide can de-
crease after frequent use.
F)
– Tighten the adjustment screw 70 until the parallel guide
can be firmly affixed on the saw table again.
Aligning the Parallel Guide Parallel to the Saw Blade
– Use a workpiece or an appropriate object with parallel edg-
es. The length of the object should approximately corre-
spond with the diameter of the saw blade.
– Slide the object under the blade guard 61 and position it
flush to the saw blade.
– Move the parallel guide 59 from right to left until it touches
the object.
Checking: (see figure
The parallel guide must be flush with the object over the com-
plete length.
Adjusting:
– Remove the parallel guide from the saw table 57 and loos-
en the three screws 71 inside the glide pad of the parallel
guide using a Phillips screwdriver. (see figure
– Press the parallel guide from the front firmly against the
scale 63 and align it flush alongside the object on the saw
table. (see figure
– Hold the parallel guide in this position and tighten the left
and right set screw 72 with the slotted screwdriver provid-
ed. (see figure
– Remove the parallel guide from the saw table.
– Screw the centre set screw 72 in or out until it is flush with
the glide pad surface.
G)
H)
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Bosch Power Tools
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