Bosch GCM 12 JL Professional Originalbetriebsanleitung Seite 36

36 | English
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
Note: To test the laser function, the machine must be con-
nected to power.
 While adjusting the laser (e. g. when moving the tool
arm), never actuate the On/Off switch. Accidental start-
ing of the power tool can lead to injuries.
– Bring the power tool into the working position.
– Turn the saw table 30 to the 0° detent 29. The lever 10
must be felt to engage in the detent.
– Switch the laser beam on with switch 31.
Checking: (see figure R1)
– Draw a straight cutting line on the workpiece.
– Press lever 22 and slowly guide the tool arm downward by
handle 4.
– 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.
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: (see figure R2)
– Screw the adjustment screw 57 in or out using a suitable
screwdriver until the laser beam is parallel 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.
Setting the Standard Bevel Angle 0° (Vertical)
– Bring the power tool into the working position.
– Turn the saw table 30 to the 0° detent 29. The lever 10
must be felt to engage in the detent.
Checking: (see figure S1)
– Adjust an angle gauge to 90° and position it on the saw ta-
ble 30.
The leg of the angle gauge must be flush with the saw blade 37
over the complete length.
Adjusting: (see figure S2)
– Loosen clamping lever 23.
– Push the stop 26 completely to the rear.
– Loosen the lock nut of the stop screw 59 using a commer-
cial box-end or open-end spanner (size 13 mm).
– Screw the stop screw in or out until the leg of the angle
gauge is flush with the saw blade over the complete length.
– Tighten clamping lever 23 again.
1 609 92A 1CJ | (10.6.15)
– Afterwards, retighten the lock nut of the stop screw 59
again.
In case the angle indicator 25 is not in a line with the 0° mark
of the scale 24 after the adjustment, loosen the screw 58 us-
ing a commercial cross-head screwdriver and align the angle
indicator along the 0° mark.
Setting the Standard Bevel Angle 45° (Vertical)
– Bring the power tool into the working position.
– Turn the saw table 30 to the 0° detent 29. The lever 10
must be felt to engage in the detent.
– Turn the stop 19 completely to the rear.
– Loosen clamping lever 23 and tilt the tool arm by handle 4
leftward to the stop (45°).
Checking: (see figure T1)
– Adjust an angle gauge to 45° and position it on the saw ta-
ble 30.
The leg of the angle gauge must be flush with the saw blade 37
over the complete length.
Adjusting: (see figure T2)
– Loosen the lock nut of the stop screw 60 using a commer-
cial box-end or open-end spanner (size 13 mm).
– Screw the stop screw in or out until the leg of the angle
gauge is flush with the saw blade over the complete length.
– Tighten clamping lever 23 again.
– Afterwards, retighten the lock nut of the stop screw 60
again.
In case the angle indicator 25 is not in a line with the 45° mark
of the scale 24, firstly check the 0° setting for the bevel angle
and the angle indicator again. Then repeat the adjustment of
the 45° bevel angle.
Aligning the Scale for Mitre Angles
– Bring the power tool into the working position.
– Turn the saw table 30 to the 0° detent 29. The lever 10
must be felt to engage in the detent.
Checking: (see figure U1)
– Adjust an angle gauge to 90° and position it between the
fence 6 and the saw blade 37 on the saw table 30.
The leg of the angle gauge must be flush with the saw blade 37
over the complete length.
Adjusting: (see figure U2)
– Loosen all four set screws 61 with the hex key (4 mm) 17
and turn the saw table 30 together with the scale 13 until
the leg of the angle gauge is flush with the saw blade over
the complete length.
– Retighten the screws again.
When the angle indicator 12 is not in line with the 0° mark of
scale 13 after adjusting, loosen screw 62 with a cross-head
screwdriver and align the angle indicator alongside the
0° mark.
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