Preparing For Operation - Bosch GCM 12 JL Professional Notice Originale

OBJ_BUCH-1600-005.book Page 32 Friday, December 16, 2016 9:23 AM
32 | English
Mounting the Saw Blade
If required, clean all parts to be mounted prior to assembly.
– Place the new saw blade onto the interior clamping flange 51.
 When mounting the saw blade, pay attention that the
cutting direction of the teeth (arrow direction on the
saw blade) corresponds with the direction of the arrow
on the blade guard!
– Place on the clamping flange 50 and the screw 49.
Press the spindle lock 21 until it engages and tighten the
screw turning in anticlockwise direction.
– Push the retracting blade guard 5 down toward the front
until the respective recess of cover plate 36 engages under
fastening screw 48 again.
For this, it is possible that you must counter-hold the tool
arm by the handle to achieve the pre-tension of the retract-
ing blade guard.
– Press lever 22 and tilt the retracting blade guard 5 up to
the stop.
Hold the retracting blade guard in this position.
– Firmly tighten fastening screw 48 and guide the retracting
blade guard down again.
Operation
 Before any work on the machine itself, pull the mains
plug.
Transport Safety (see figure D)
The transport safety-lock 20 enables easier handling of the
machine when transporting to various working locations.
Releasing the Machine (Working Position)
– Push the tool arm by the handle 4 down a little in order to
relieve the transport safety-lock 20.
– Pull the transport safety-lock 20 completely outward.
– Guide the tool arm slowly upward.
Securing the Machine (Transport Position)
– Press lever 22 and at the same time, push the tool arm by
handle 4 downward until the transport safety-lock 20 can
be pushed completely inward.
The tool arm is now securely locked for transport.

Preparing for Operation

Extending the Saw Table (see figure E)
Long workpieces must be underlaid or supported at their free
end.
The saw table can be extended left and right with the saw-
table extensions 15.
– Push clamping lever 14 upward.
– Pull out the saw-table extension 15 to the desired length.
– To lock the saw-table extension, push clamping lever 14
down again.
Moving the Fence (see figure F)
For bevel angles, the adjustable fence 18 must be moved.
– Turn clamping lever 41 toward the front.
– Pull the adjustable fence 18 completely outward.
– To lock the adjustable fence, push clamping lever 41 down
again.
1 609 92A 348 | (16.12.16)
Removing the Adjustable Fence (see figure G)
For extreme bevel angles, the adjustable fence 18 must be
removed completely.
– Pivot cover plate 52 outward.
– Turn clamping lever 41 toward the front.
– Pull the adjustable fence 18 completely outward.
– Remove the adjustable fence upward.
Repositioning Distance-stops (see figures H1–H2)
In order to saw workpieces higher than 75 mm, the distance-
stops must be inserted at the front position on both sides.
– Pull the distance-stops 7 upward out of adjustable fence
18 (left) and out of fence 6 (right).
– Mount the distance-stops 7 again via the rear groove and
push them to the stop into the fence extension 18 and
fence 6.
The distance-stops must be heard to engage.
The distance-stops always must be in line to each other, so
that a straight contact surface for the workpiece is achieved.
Clamping the Workpiece (see figure I)
To ensure optimum working safety, the workpiece must
always be firmly clamped.
Do not saw workpieces that are too small to clamp.
– Press the workpiece firmly against the fence 6.
– Insert the material clamp 40 provided into one of the holes
42 intended for it.
– Loosen the wing bolt 54 and adapt the material clamp to
the workpiece. Tighten the wing bolt again.
– Firmly clamp the workpiece by turning the threaded rod
53 in clockwise direction.
Adjusting Mitre Angles
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use (see "Checking and Adjusting the Basic Adjustment",
page 35).
 Always tighten the locking knob 9 firmly before saw-
ing. Otherwise the saw blade can become wedged in the
workpiece.
Adjusting Standard Mitre Angles (see figure J)
For quick and precise adjustment of commonly used mitre
angles, detents 29 have been provided for on the saw table:
Left
0°
45° 31.6° 22.5° 15° 15°
– Loosen the locking knob 9 in case it is tightened.
– Pull lever 10 and rotate the saw table 30 left or right to the
requested detent.
– Release the lever again. The lever must be felt to engage in
the detent.
Adjusting Any Mitre Angle (see figure K)
The mitre angle can be set in the range from 52° (left side) to
52° (right side).
– Loosen the locking knob 9 in case it is tightened.
– Pull lever 10 and at the same time, push mitre detent over-
ride 11 down at the front.
Right
22.5° 31.6° 45°
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