Bosch Professional GKE 35 BCE Manual Original página 25

OBJ_BUCH-716-005.book Page 25 Wednesday, December 3, 2014 11:12 AM
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.
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18
– 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.
15 23
– Lightly tighten the cover 15 with the locking knob 14.
Bosch Power Tools
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11
– The chain is not yet tensioned. The saw chain is tensioned
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.
21
– Turn locking knob 14 approx. 1 – 3 turns anticlockwise to
loosen the chain bar.
– Check if the chain links are correctly located in the slot
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around the chain bar 11 and on the drive sprocket 18.
11
– Turn the red chain-tensioning ring 13 clockwise ratcheting
until the correct chain tension is reached. The ratchet
mechanism prevents the chain tension from loosening. If
the chain-tensioning ring 13 is hard to turn, loosen the
locking knob 14 further in anticlockwise direction. The
locking knob 14 may also turn, when adjusting the chain-
tensioning ring 13.
– The saw chain 10 is correctly tensioned when it can be
raised approx. 3 – 4 mm from the chain bar in the centre.
This should be done by using one hand to raise the saw
chain against the weight of the machine.
– If the saw chain 10 is overtensioned, turn the chain-ten-
sioning ring 13 in anticlockwise direction.
14
14 13
1 609 92A 11D | (3.12.14)
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