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14 | English
The saw chain must be running at full speed before coming
into contact with the autoclaved aerated concrete. To do
this, use the stop (10) to support the power tool on the auto-
claved aerated concrete. During sawing, use the stop as a
lever.
When sawing heavier autoclaved aerated concrete blocks,
reposition the stop at a lower point. To do this, pull the
power tool back to release the stop and reposition it at a
lower point. Do not remove the power tool from the cut.
Do not press on the saw chain with force, let it run by using
the stop (10) to create a slight leverage pressure.
Never operate the power tool with extended arms. Do not at-
tempt to operate the saw in hard-to-reach places or when
standing on a ladder. Never saw above shoulder height.
The best sawing results are achieved when the chain speed
is not reduced due to overload.
Be careful at the end of the saw cut. As soon as the power
tool has cut through, the weight force will change unexpec-
tedly. There is a risk of injury to legs and feet.
Only remove the power tool from the cut with the saw chain
running.
Troubleshooting
The following table shows fault symptoms and how you can remedy the problem if your power tool does not work properly. If
this does not enable you to locate and rectify the problem, contact your service workshop.
Important: Before troubleshooting, switch off the
u
power tool and pull out the mains plug.
Problem
Possible Cause
Power tool not running Front brake has been triggered
Plug not connected
Plug socket defective
Fuse has been triggered
Extension cable damaged
Power tool works inter-
Mains cable defective
mittently
External or internal loose connection
On/off switch (2) defective
Saw chain does not
Front brake/run-out brake defective
slow down
Saw chain/guide rail
Chain tension too high
hot
Blunt saw chain
Power tool judders, vi-
Chain tension too low
brates or does not saw
Blunt saw chain
correctly
Saw chain worn
Saw teeth pointing in the wrong direction
1 609 92A 8GA | (21.03.2023)
Sawing Autoclaved Aerated Concrete (see
figures G–H)
When sawing autoclaved aerated concrete, refer to the fol-
lowing safety regulations:
Set down the autoclaved aerated concrete as shown in the
figure and support it such that the cut does not close and the
saw chain jams.
Before sawing, set up shorter autoclaved aerated concrete
structures and secure them in place.
Only saw objects made of autoclaved aerated concrete.
Avoid coming into contact with stones and nails because
they may be hurled upwards and damage the saw chain or
cause serious injuries to the user or bystanders.
Do not bring the running power tool into contact with wire
fencing or the ground.
Exercise particular caution when making rip cuts because
the stop (10) cannot be used. Guide the power tool at a shal-
low angle in order to avoid saw kickbacks.
Corrective measure
Pull the lever for activating the front brake (4)
back to the
position.
Connect the plug
Use another plug socket
Change the fuse
Do not attempt without an extension cable
Operate the front brake lever to stop the saw
chain; check the mains cable and replace it if ne-
cessary
Operate the front brake lever to stop the saw
chain; contact your Bosch after-sales service
Operate the front brake lever to stop the saw
chain; contact your Bosch after-sales service
Contact your Bosch after-sales service.
Adjust the chain tension
Replace the saw chain
Adjust the chain tension
Replace the saw chain
Replace the saw chain
Install the saw chain correctly
Bosch Power Tools
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