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OBJ_BUCH-2766-002.book Page 6 Friday, April 15, 2016 12:42 PM
6 | English
Replacing the Drill Chuck
For machines without spindle lock, the drill chuck must be re-
placed through an authorized after-sales service agent for
Bosch power tools.
The drill chuck must be tightened with a tightening
torque of approx. 30–35 Nm.
Dust/Chip Extraction
Dust from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
– 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
materials to be worked.
Prevent dust accumulation at the workplace. Dust can
easily ignite.
Operation
Starting Operation
Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Setting the operating mode
Drilling
Set the selector switch 2 to the "Drilling" symbol.
Impact Drilling
Set the selector switch 2 to the "Impact drilling"
symbol.
The selector switch 2 engages noticeably and can also be ac-
tuated with the machine running.
Switching On and Off
To save energy, only switch the power tool on when using it.
– To start the machine, press the On/Off switch 5 and keep
it pressed.
– To lock the pressed On/Off switch 5, press the lock-on
button 4.
– To switch off the machine, release the On/Off switch 5 or
when it is locked with the lock-on button 4, briefly press
the On/Off switch 5 and then release it.
Adjusting the Speed/Impact Rate
The speed/impact rate of the switched on power tool can be
variably adjusted, depending on how far the On/Off switch 5
is pressed.
1 609 92A 2UL | (15.4.16)
Light pressure on the On/Off switch 5 results in low speed/im-
pact rate. Further pressure on the switch increases the
speed/impact rate.
Working Advice
After longer periods of working at low speed, allow the ma-
chine to cool down by running it for approx. 3 minutes at max-
imum speed with no load.
For drilling in tiles, set the selector switch 2 to the "Drilling"
symbol. Do not switch over to the symbol "Impact Drilling" or
work with impact until after drilling through the tile.
Use carbide tipped drill bits when working in concrete, ma-
sonry and brick wall.
For drilling in metal, use only perfectly sharpened HSS drill
bits (HSS=high-speed steel). The appropriate quality is guar-
anteed by the Bosch accessories program.
Twist drills from 2,5–10 mm can easily be sharpened with
the drill bit sharpener (see accessories).
Maintenance and Service
Maintenance and Cleaning
Before any work on the machine itself, pull the mains
plug.
For safe and proper working, always keep the machine
and ventilation slots clean.
If the replacement of the supply cord is necessary, this has to
be done by Bosch or an authorized Bosch service agent in or-
der to avoid a safety hazard.
After-sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Bosch's application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the nameplate of
the product.
India
Bosch Service Center
67, Mathiravedu, Velappan Chavdy, Ponamalle High Road,
Numbal Village
Chennai–600077
Phone: (044) 64561816
Bosch Service Center
Rishyamook, 85A, Panchkuin Road
Delhi–110001
Phone: (011) 43166190
Bosch Service Center
41, 41A, Appa Baug Bldg, Maharshi Karve Marg, Opp Charni
Road Station
Mumbai–400002
Phone: (022) 22014649
Bosch Power Tools
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