Preparing For Operation; Adjusting The Cutting Angle - Bosch GCM 80 SJ Professional Notice Originale

OBJ_BUCH-2154-003.book Page 23 Monday, March 6, 2017 11:48 AM
Changing the Saw Blade (see figures C1 – C4)
 When mounting the saw blade, wear protective gloves.
Danger of injury when touching the saw blade.
Use only saw blades whose maximum permitted speed is
higher than the no-load speed of the power tool.
Use only saw blades that correspond with the characteristic
data given in these operation instructions and that are tested
and marked in accordance with EN 847-1.
Use only saw blades recommended by the tool manufacturer,
and suitable for sawing the materials to be cut. This prevents
overheating of the saw teeth during sawing.
Removing the Saw Blade
– Bring the power tool into the working position.
– Turn the hex socket screw 36 with the hex key (5 mm) 35
and at the same time press the spindle lock 29 until it en-
gages.
– Hold the spindle lock 29 pressed and unscrew the hex
socket screw 36 in clockwise direction (left-hand thread!).
– Remove the clamping flange 37.
– Press locking switch 17 and swing back the retracting
blade guard 19 to the stop.
– Hold the retracting blade guard in this position and remove
the saw blade 39.
– Slowly guide the retracting blade guard downward again.
Mounting the Saw Blade
If required, clean all parts to be mounted prior to assembly.
– Press locking switch 17, swing back the retracting blade
guard 19 to the stop and hold it in this position.
– Place the new saw blade onto the interior clamping flange
38.
 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!
– Slowly guide the retracting blade guard downward again.
– Place on the clamping flange 37 and the screw 36.
Press the spindle lock 29 until it engages and tighten the
screw turning in anticlockwise direction.
Operation
 Before any work on the machine itself, pull the mains
plug.
Transport Safety (see figure D)
The transport safety-lock 30 enables easier handling of the
machine when transporting to various working locations.
Releasing the Machine (Working Position)
– Push the tool arm by the handle 16 down a little in order to
relieve the transport safety-lock 30.
– Pull the transport safety-lock 30 completely outward.
– Guide the tool arm slowly upward.
Bosch Power Tools
Securing the Machine (Transport Position)
– Loosen the locking screw 11 if tightened. Pull the tool arm
completely to the front and tighten the locking screw
again.
– To lock the saw table 22, tighten the locking knob 25.
– Press locking switch 17 and slowly guide the tool arm
downward by the handle 16.
– Guide the tool arm downward until the transport safety-
lock 30 can be pushed completely inward.

Preparing for Operation

Moving the Fence (see figure E)
You have to move the adjustable fence 6 to saw bevel angles.
– Loosen the locking screw 40 using the supplied hex key
35.
The two outer fixing screws must not be loosened!
– Pull the adjustable fence 6 completely outward.
– Retighten the locking screw 40.
After sawing the bevel angles, slide the adjustable fence 6
back again (loosen the locking screw 40; slide the fence 6
completely inward; retighten the locking screw).
Extending the Saw Table (see figure F)
Long workpieces must be underlaid or supported at their free
end.
The saw table can be extended left and right with the saw-ta-
ble extensions 3.
– Loosen the clamping screw 2.
– Pull out the saw-table extension 3 to the desired length.
– Retighten the clamping screw 2 to fix the saw-table exten-
sion.
Clamping the Workpiece (see figure G)
To ensure optimum working safety, the workpiece must al-
ways be firmly clamped.
Do not saw workpieces that are too small to clamp.
– Press the workpiece firmly against the fences 6 and 21.
– Insert the material clamp 7 provided into one of the holes
41 intended for it.
– Adapt the threaded rod 42 of the screw clamp to the work-
piece height.
– Firmly tighten the threaded rod 42, thus fastening the
workpiece.

Adjusting the Cutting Angle

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 25).
 Always tighten the locking knob 25 firmly before saw-
ing. Otherwise the saw blade can become wedged in the
workpiece.
Adjusting Mitre Angles (see figure H)
The mitre angle can be set in the range from 47° (left side) to
47° (right side).
– Loosen the locking knob 25 in case it is tightened.
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1 609 92A 3BW | (6.3.17)