Bosch GAC 250 (0.601.2B6.020) - Инструкция по эксплуатации - Страница 23

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23

Problem

Possible Cause

Corrective measure

Power tool not running Front brake has been triggered

Pull the lever for activating the front brake 

(4)

back to the 

 position.

Plug not connected

Connect the plug

Plug socket defective

Use another plug socket

Fuse has been triggered

Change the fuse

Extension cable damaged

Do not attempt without an extension cable

Power tool works inter-
mittently

Mains cable defective

Operate the front brake lever to stop the saw
chain; check the mains cable and replace it if ne-
cessary

External or internal loose connection

Operate the front brake lever to stop the saw
chain; contact your Bosch after-sales service

On/off switch 

(2)

 defective

Operate the front brake lever to stop the saw
chain; contact your Bosch after-sales service

Saw chain does not
slow down

Front brake/run-out brake defective

Contact your Bosch after-sales service.

Saw chain/guide rail
hot

Chain tension too high

Adjust the chain tension

Blunt saw chain

Replace the saw chain

Power tool judders, vi-
brates or does not saw
correctly

Chain tension too low

Adjust the chain tension

Blunt saw chain

Replace the saw chain

Saw chain worn

Replace the saw chain

Saw teeth pointing in the wrong direction

Install the saw chain correctly

Maintenance and Service

Maintenance and Cleaning

u

Pull the plug out of the socket before carrying out any
work on the power tool.

u

To ensure safe and efficient operation, always keep
the power tool and the ventilation slots clean.

u

In extreme conditions, always use a dust extractor if
possible. Blow out ventilation slots frequently and in-
stall a residual current device (RCD) upstream.

In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by 

Bosch

 or by an

after-sales service centre that is authorised to repair 

Bosch

power tools.

Note:

 Perform the following maintenance work regularly to

ensure long and reliable use.
Check whether the covers and protective devices are un-
damaged and fitted correctly. Before use, carry out any re-
quired maintenance or repair work.
Regularly inspect the power tool for obvious defects, such as
a loose, dislodged or damaged saw chain, a loose fixing and
worn or damaged components.

Replacing the Saw Chain and Sprocket Wheel

Replace the saw chain and sprocket wheel with
original 

Bosch

 spare parts or have these parts replaced at

your authorised after-sales service centre for 

Bosch

 power

tools.

After Use/Storage

Place the chain guard 

(7)

 on the chain bar 

(9)

 in order to

prevent injuries.
The saw chain 

(8)

 may become blunt from unintentional im-

pacts or scratches.
Clean the moulded plastic housing of the power tool using a
soft brush and a clean cloth. Do not use water or any
solvents or polishes. Remove all of the dirt, particularly any
dirt in the motor's ventilation slots.
After an application time of 1–3 hours, remove the
cover 

(12)

, the chain bar 

(9)

 and the saw chain 

(8)

 and

clean them using a brush.
If the power tool is to be stored for a prolonged period of
time, clean the saw chain 

(8)

 and the chain bar 

(9)

.

Store the power tool in a safe, dry place out of the reach of
children.
Do not place any other objects on the power tool.

Do not make any alterations to the power tool.

 Unreliable

alterations may compromise the safety of your power tool
and lead to increased noise and vibrations.

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. You can find explosion drawings and information on
spare parts at: 

www.bosch-pt.com

The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.

Bosch Power Tools

1 609 92A 6BF | (25.10.2022)