Bosch EasyChain 18V-15-7 Original Instructions Manual page 29

This gives longer life to the battery and always leaves it fully
charged when kept in the charger for storage.
Mounting and Tensioning the Saw Chain (see
figures B1 – B7)
Wear PPE before maintaining or changing the saw
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chain.
Do not use any tools for assembly.
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Using the pruner saw with misaligned or incorrectly
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tensioned chain can result in chain breakage, kick-
back and/or injury. A correctly aligned and tensioned
chain optimises product performance and extends its life-
time. Tension the chain using the Bosch approved ten-
sioning aid (26).
Upon initial operation, new chains can lengthen con-
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siderably.
Avoid tensioning the chain if it is hot, as this will cause
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the chain to become overtensioned and fit too tightly
against the chain bar when it cools down.
Use only chains with a drive link thickness of 1.1 mm.
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– Place the pruner saw on any suitable flat surface.
– Make sure that the tensioning wheel (2) has been turned
fully in anticlockwise direction.
– Slot in the saw chain (14) in the gap of the chain bar
(15). Ensure the saw chain is in the correct running direc-
tion by comparing the saw chain with the symbol for rota-
tion and cutting direction (19).
– Place the chain bar (15) on the fastening bolt (21) and
place the chain links around the drive sprocket (24).
– Check if all parts are positioned properly and hold the
chain bar and the chain in this position. Use the magnet
(20) for added support when aligning the chain bar into
position.
– Rotate the tensioning wheel (2) clockwise until the chain
is partially tensioned.
– Attach the cover (11) and rotate the SDS lock (12) clock-
wise until the cover is partially secured.
– Turn the tensioning wheel (2) clockwise (+) until the cor-
rect chain tension is reached. The saw chain (14) is cor-
rectly tensioned when it can be raised approx. 2–3 mm
from the chain bar.
– Once the correct tension is reached, rotate the clamping
knob (12) clockwise until it is firmly secured and fold
down the bracket on the clamping knob (12). The chain
bar is fixed in the set position. Do not continue to turn the
tensioning wheel (2)
– If the chain is tensioned too tightly, fold up the bracket on
the clamping knob (12) and turn partly anti-clockwise.
Turn the tensioning wheel (-) and repeat the tensioning
steps.
Chain Tension Aid
When setting the saw chain (14) tension with the chain ten-
sion aid (26) complete the following steps:
Bosch Power Tools
– Wearing protective gloves, pull the saw chain (14) away
from the chain bar (15) and insert the tension aid (26)
between the chain bar (15) and saw chain (14).
Note: Locate the tension aid in the middle of the chain bar
(15).
– Gradually increase the chain tension by rotating the ten-
sioning wheel (2) clockwise until the tension aid hook
aligns with the loop (see figure B5).
– Remove the chain tension aid (26) before operating the
tool.
– If you can not fit the chain tension aid between the saw
chain (14) and chain bar (15), the saw chain is over ten-
sioned. Release chain tension by rotating the tensioning
wheel (2) counter-clockwise. Lock the tensioning wheel
(2) by rotating the clamping knob (12).
Note: If using the chain tension aid (26) only use the tool
supplied in the box.
Saw chain Lubrication (see figure C)
The saw chain is not automatically lubricated with chain oil
during operation.
Check the saw chain before each use and apply oil manually.
Operating the pruner saw without chain oil will damage the
pruner saw.
The service life of the saw chain and the cutting performance
depend on optimum lubrication.
Note: It is important to use only readily biodegradable chain
lubricants (according to RAL-UZ 48) to avoid damage to the
chain saw. Never use recycled/old oil. Use of non approved
oil will invalidate the warranty.
Applying oil to the saw chain:
– Remove the battery before oiling the chain.
– Always wear gloves when applying oil to the saw chain.
– Put the pruner saw on a suitable surface, with the cover
(11) facing up.
– Apply oil in the area between the chain bar and the saw
chain.
– Reinsert the battery. Briefly switch the pruner saw on to
distribute the oil evenly over the guide bar and saw chain.
Operation
Switching On and Off (see figure E)
Switching On
Remove the chain cover (13) and insert the charged battery.
Hold the pruner saw with both hands, one hand on the rear
handle (6) and one hand on the auxiliary handle (3).
Press the power lock-off button (4) and afterwards the On/
Off switch (5).
As soon as the saw chain (14) moves, release the lock-off
button for the On/Off switch (4) again.
After changing the battery, check that the pruner saw starts
up before you start cutting.
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F 016 L94 755 | (10.01.2024)