Bosch GCO 2000 Professional Original Instructions Manual page 18

OBJ_BUCH-1063-003.book Page 18 Wednesday, July 3, 2013 1:51 PM
18 | English
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.
1 609 92A 0CZ | (3.7.13)
– 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.
– Place the workpiece against the angle stop 7.
– Slide the clamping spindle 8 against the workpiece and
firmly clamp the workpiece with the spindle handle 10.
Loosening the Workpiece
– Loosen the spindle handle 10.
– Tilt up the quick release 9 and pull the clamping spindle 8
away from the workpiece.
Starting Operation
 Observe the mains voltage! The voltage of the power
source must correspond with the data on the type plate of
the machine.
 Check the cutting disc before using. The cutting disc
must be properly mounted and must rotate freely. Car-
ry out a 30 second (min.) test run with no load. Do not
use damaged, out-of-centre or vibrating cutting discs.
Damaged cutting discs can burst and cause injuries.
Dusts from materials such lead-containing coatings, minerals
and metal can be harmful to one's health. Contact with or in-
haling the dusts can trigger allergic reactions to the operator
or bystanders and/or lead to respiratory infections.
Certain metal dusts are considered hazardous, especially in
conjunction with alloys such as zinc, aluminium or chromium.
Materials containing asbestos may only be worked by special-
ists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the mate-
rials to be worked.
The blade can be blocked by dust, chips or workpiece frag-
ments in the slot of the base plate 12.
– Switch the machine off and pull the mains plug from the
socket outlet.
– Wait until the cutting disc has come to a complete stop.
– Tilt the machine toward the rear, so that small workpiece
fragments can fall out of the opening intended for this pur-
pose.
If required, use a suitable tool to remove all workpiece frag-
ments.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Bosch Power Tools