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Bosch GCO 2000 Professional Manual

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18 | English
1 609 92A 0Y1 | (17.9.14) Bosch Power Tools
Stationary or Flexible Mounting
To ensure safe handling, the machine must be mounted
on a level and stable surface (e. g., workbench) prior to
using.
Mounting to a Working Surface (see figure A)
– Fasten the power tool with suitable screw fasteners to the
working surface. The mounting holes 11 serve for this pur-
pose.
Flexible Mounting (not recommended!)
In the exceptional case that it should not be possible to firmly
bench-mount the power tool, you can provisionally place the
legs of base plate 12 on a suitable surface (e. g. a workbench,
level floor, etc.) without bolting the machine down.
Changing the Tool (see figures B1–B2)
Before any work on the machine itself, pull the mains
plug.
Actuate the spindle lock 5 only when the tool spindle
21 is stopped. Otherwise, the machine can become dam-
aged.
Do not touch the cutting disc after working before it
has cooled. The cutting disc becomes very hot while work-
ing.
Use only cutting discs that have an equal or higher maximal al-
lowable speed than the no-load speed of your power tool.
Use only cutting discs that correspond to the characteristic
data given in these operating instructions and are checked ac-
cording to EN 12413 and marked appropriately.
Place unused cutting discs in an enclosed container or in the
original packaging. Store cutting discs lying flat.
Removing the Cutting Disc
– Bring the power tool into the working position. (see “Re-
leasing the Machine (Working Position)”, page 18)
– Swing back the retracting blade guard 4 to the stop.
– Turn hexagon bolt 24 with the provided ring spanner 14
(15 mm) and at the same time press the spindle lock 5 un-
til it engages.
– Hold the spindle lock pressed and unscrew the hexagon
bolt 24.
– Remove the washer 23 and the clamping flange 22.
– Remove the cutting disc 6.
Installing the Cutting Disc
If required, clean all parts to be mounted prior to assembly.
– Mount the new cutting disc onto the tool spindle 21 in such
a manner that its lable faces away from the tool arm.
–Mount the clamping flange 22, the washer 23 and the hex-
agon bolt 24.
Press spindle lock 5 until it engages and tighten hexagon
bolt 24 with the provided ring spanner 14. (Tightening
torque approx. 18–20 Nm)
– Slowly guide the retracting blade guard 4 down until the
cutting disc is covered off.
– Make sure that the retracting blade guard 4 operates prop-
erly.
After mounting the cutting disc and before switching on,
check whether the cutting disc is properly mounted and if it
can rotate freely.
– Make sure that the cutting disc does not graze against the
retracting blade guard 4, the blade guard 19 or against
other parts.
– Run the machine for approx. 30 seconds.
Should significant vibrations occur, switch off the machine
immediately; remove and install the cutting disc again.
Operation
Before any work on the machine itself, pull the mains
plug.
Transport Safety (see figure C)
The transport safety-lock 15 enables easier handling of the
machine when transporting to various working locations.
Releasing the Machine (Working Position)
– Push the tool arm by the handle 3 down a little in order to
relieve the transport safety-lock 15.
– Pull the transport safety-lock 15 completely outward.
– Guide the tool arm slowly upward.
Note: When working, pay attention that the transport safety-
lock is not pushed inwards. Otherwise, the tool arm cannot be
lowered to the requested depth.
Securing the Machine (Transport Position)
– Guide the tool arm downward until the transport safety-
lock 15 can be pushed completely inward.
For additional information on transport, see page 20.
Adjusting the Cutting Angle (see figure D)
The miter angle can be set in a range from 0° to 45°.
Frequently used mitre angles are identified on the angle stop
7 with appropriate markings. The 0° and 45° position are set
at the respective end stop.
– Loosen the locking screws 13 for the angle stop with the
supplied ring spanner 14 (15 mm).
– Adjust the desired angle and firmly tighten both locking
screws 13 again.
Displacing the Angle Stop (see figure D and E)
When cutting workpieces wider than 140 mm, the angle stop
7 can be displaced to the rear.
– Completely unscrew locking screws 13 with the supplied
ring spanner 14 (15 mm).
– Move the angle stop 7 toward the rear by one or two holes
to the desired clearance.
– Adjust the desired angle and firmly tighten both locking
screws 13 again.
Clamping the Workpiece (see figure E)
To ensure optimum working safety, the workpiece must al-
ways be firmly clamped.
Do not saw workpieces that are too small to clamp.
Long workpieces must be underlaid or supported at their free
end.
OBJ_BUCH-1063-004.book Page 18 Wednesday, September 17, 2014 9:34 AM
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