Bosch GTM 12 JL Professional 0.601.B15.001 [46/507] Checking and adjusting the basic adjustment
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Bosch GTM 12 JL Professional 0.601.B15.001 [46/507] Checking and adjusting the basic adjustment

Bosch GTM 12 JL Professional 0.601.B15.001 [46/507] Checking and adjusting the basic adjustment
46 | English
1 609 92A 3S7 | (24.2.17) Bosch Power Tools
Ceiling Strips/Mouldings (According to US Standard)
Checking and Adjusting the Basic Adjustment
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 Laser
– Bring the power tool into the table saw working position.
(see “Working Position”, page 48)
– Turn the saw table 22 to the 0° detent 27. The lever 26
must be felt to engage in the detent.
Checking: (see figure M1)
– Draw a straight cutting line on the workpiece.
– Push button 17 and slowly guide the tool arm downward
with the handle 18.
– Align the workpiece in such a manner that the teeth of the
saw blade are in alignment with the cutting line.
– Hold the workpiece in this position and slowly guide the
tool arm upward again.
– Clamp the workpiece.
– Switch the laser beam on with switch 36.
The laser beam must be in alignment with the cutting line on
the workpiece over the complete length, also when the tool
arm is lowered.
Adjusting the Parallelism: (see figure M2)
– Undo the rubber cap 50.
– Screw the adjustment screw 51 in or out using a suitable
screwdriver until the laser beam is parallel with the cutting
line on the workpiece over the complete length.
Adjusting the Flush Levelling: (see figure M3)
An adjustment screw 52, which is located below the opening
marked with “R/L”, is used for adjustment of the flush leve-
ling.
– Screw the adjustment screw 52 in or out with the slotted
screwdriver provided until the parallel laser beam is flush
with the cutting line on the workpiece over the complete
length.
One rotation in anticlockwise direction moves the laser beam
from left to right; one rotation in clockwise direction moves
the laser beam from right to left.
Adjusting the Lateral Deviation while Moving the Tool
Arm: (see figure M4)
– Open the side rubber cap 53.
– If the laser beam moves towards the left when lowering
the tool arm, turn adjustment screw 54 clockwise using a
suitable screwdriver.
If the laser beam moves towards the right, turn adjust-
ment screw 54 anticlockwise.
– After adjusting, check the flushness with the cutting line
again. If required, align the laser beam with the adjustment
screw 52 again.
When the ceiling strips/mouldings are to be sawn lying flat on the saw table, the standard mitre angles
of 31.6° (horizontal) and 33.9° (vertical) must be set.
The following table contains instructions for sawing ceiling strips/mouldings.
Settings Placed
against the
fence
Lying flat on
the saw table
Bevel angle 0° 33,9°
Ceiling strip/moulding
Left side Right side Left side Right side
Inner corner Horizontal mitre angle
45° right 45° left 31.6° right 31.6° left
Positioning of work-
piece
Bottom edge
against the fence
Bottom edge
against the fence
Upper edge against
the fence
Bottom edge
against the fence
The finished work-
piece is located ...
... to the right of the
cut
... to the left of the
cut
... to the left of the
cut
... to the left of the
cut
Outer corner Horizontal mitre angle
45° left 45° right 31.6° left 31.6° right
Positioning of work-
piece
Bottom edge
against the fence
Bottom edge
against the fence
Bottom edge
against the fence
Upper edge against
the fence
The finished work-
piece is located ...
... to the right of the
cut
... to the left of the
cut
... to the right of the
cut
... to the right of the
cut
52°
38°
52°
OBJ_BUCH-1688-007.book Page 46 Friday, February 24, 2017 12:15 PM

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