Bosch GKE Professional 40 BCE Original Instructions Manual page 25

OBJ_BUCH-716-004.book Page 25 Tuesday, August 23, 2011 3:50 PM
It is recommended for increased electrical safety to use a Re-
sidual Current Device (RCD) with a tripping current of not
more than 30 mA. Always check your RCD every time you use
it.
If the supply cord is damaged, it must be replaced by a Bosch
Service Centre.
For products not sold in GB:
WARNING: For your safety, it is required that the plug at-
tached to the machine is connected with the extension cord.
The coupling of the extension cord must be protected against
splash water, be made of rubber or coated with rubber. The
extension cord must be used with a cable strain relief.
Mounting and Tensioning the Chain Saw
Do not connect the chain saw to mains before it is com-
pletely assembled.
Always wear protective gloves when handling the
chain.
Chain and Chain Bar Assembly (see figure A)
– Unpack all parts carefully.
– Align the 2 arrows on the chain-tensioning ring 13 and the
cover 15 ( ).
15
13
– Place the chain saw on any suitable flat surface.
Use only chains with a drive link thickness of 1.3 mm.
– Slide the saw chain 10 in the slot around the chain bar 11.
Ensure the saw chain is in the correct running direction by
comparing the saw chain with the rotation symbol 17. Take
care that the chain tensioning catch 22 faces outward. The
saw chain 10 is slid on easier when holding the chain bar
11 vertical.
10
– Fit the chain links around the drive sprocket 18 and mount
the chain bar 11 in such a manner that the guide fins 20 in
front and behind the fastening bolt 21 engage into the key-
way of the chain bar 11.
Bosch Power Tools
– Check if all parts are seated properly and hold the chain
bar and the chain in this position.
– Fit the cover 15 exactly and take care that the chain catch
bolt 23 engages into the groove of the cover plate 15.
– Lightly tighten the cover 15 with the locking knob 14.
22
– The chain is not yet tensioned. The saw chain is tensioned
11
as described in section "Tensioning the Saw Chain".
Tensioning the Saw Chain (see figures A and C)
Always check the chain tension before use, after the first cuts
and regularly during use approx. every 10 minutes. Upon ini-
tial operation, new chains can lengthen considerably.
The chain life of the saw chain mainly depends upon sufficient
lubrication and correct tensioning.
Avoid tensioning the chain if it is hot, as this will cause the
chain to become overtensioned and face too tightly against
the chain bar when it cools down.
– Place the chain saw on any suitable flat surface.
17
18
15 23
14
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English | 25
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