Overload Clutch; Maintenance And Cleaning - Bosch GBH 4-top Bedienungsanleitung

EURO • Printed in Germany • BA 1 619 929 461 • GBH 4-top • GB • OSW 11/00
1 619 929 461 - D.book Seite 4 Mittwoch, 8. November 2000 3:18 15

Overload Clutch

If the drill becomes caught or jammed, the
drive to the drill spindle is interrupted.
Because of the forces that occur as a re-
sult, always hold the machine securely with
both hands and take a firm stance.
Chiselling position (Vario-Lock)
The chisel can be locked in 36 positions. In this
manner, the optimum working position can be set
for each application.
Insert the chisel in the tool holder.
Press the release button 5 and turn the mode se-
lector switch 4 at the same time to the "Chisel
(Vario-lock)" position.
Turn the tool holder to the desired chiselling posi-
tion.
Allow the mode selector switch 4 to latch in the
"Chiselling" position. The tool holder is locked in
this position.
The mode selector switch 4 must always be
locked in the "Chiselling" position when chis-
elling.
Sharpening Chisels
Since good results can be achieved only with
sharp chisels, sharpen the chiselling tools regu-
larly. This prolongs the service life of the tools
and ensures good working performance.
Sharpen chiselling tools using grinding wheels
(e. g., ceramic bonded corundum wheel) with a
steady supply of water. Recommended values for
this purpose are contained in figure E. Take care
that no annealing coloration appears on the cut-
ting edges, otherwise the hardness of the chisel-
ling tools will be impaired.
1 619 929 461 • TMS • 30.10.00

Maintenance and Cleaning

Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and the ventilation slots clean.
Keep the tool holder clean at all times.
A damaged dust protection cap should be
changed immediately. We recommend having
this carried out by an after-sales service.
If the machine should fail despite the rigorous
manufacturing and testing procedures, repair
should be carried out by an authorised after-sales
service centre for Bosch power tools.
In all correspondence and spare parts orders,
please always include the 10-digit order number
given on the nameplate of the machine.
WARNING! Important instructions for con-
necting a new 3-pin plug to the 2 wire cable.
The wires in the cable are coloured according to
the following code:
strain relief
live = brown
neutral = blue
Do not connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this machine it must be
disposed of safely.
Guarantee
We guarantee Bosch appliances in accordance
with statutory/country-specific regulations (proof
of purchase by invoice or delivery note).
Damage attributable to normal wear and tear,
overload or improper handling will be excluded
from the guarantee.
In case of complaint please send the machine,
undismantled, to your dealer or the Bosch Serv-
ice Centre for electric power tools.
English - 4
To be fitted
by qualified
professional only