Inserting The Battery; Working With The Chain Saw; Before Cutting - Bosch UniversalChain 18 Originalbetriebsanleitung

24 | English
Filling the oil reservoir:
– Set chain saw on any suitable surface with the oil filler cap
(4) facing upward.
– Clean area around the oil filler cap (4) with a cloth and un-
screw the cap.
– Add Bosch biodegradable chain saw oil until oil level
reads "max" on oil level gauge (7).
– Avoid dirt or debris from entering the oil reservoir. Screw
on oil filler cap (4) again and tighten.
– Run chain saw for 30 seconds to prime oil system.
Note: To allow venting of the oil reservoir, small breather
channels are provided in the oil filler cap. To prevent leak-
age, ensure the chain saw is left in a horizontal position (oil
filler cap (4) uppermost) when not in use.
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.
Note: Oil becomes denser at lower temperatures which de-
creases the flow rate of oil.
Operation

Inserting the battery

Insert the charged battery (17). Make sure that the battery
is fully fitted.
Switching On and Off
Hold the chain saw as described in section "Working with the
Chain Saw".
To start the machine, first push the lock-off button for the
On/Off switch (3) and then press the On/Off switch (2) and
keep it pressed.
When the machine is running, the lock-off button can be re-
leased again.
To switch off the power tool, release the On/Off switch (2).
Note: For safety reasons, the On/Off switch (2) cannot be
locked; it must remain pressed during the entire operation.

Working with the Chain Saw

Before Cutting

Before starting operation and periodically during cutting,
carry out the following checks:
– Is the chain saw in a fail-safe condition?
– Is the oil reservoir filled? Check oil level gauge prior to
starting and regularly during operation. Refill oil when oil
level has reached the bottom edge of the viewing glass.
The oil tank filling will last approx. 15 minutes, depending
on sawing intensity and stops.
– Is the saw chain properly tensioned and sharp? Check
chain tension every 10 minutes during operation. Upon
initial operation, new chains can lengthen considerably.
The condition of the chain influences the cutting perform-
ance. Only a sharp chain protects from overload.
F 016 L94 153 | (04.02.2021)
– Are you wearing the required protective equipment?
Wear safety glasses and hearing protection. Further pro-
tective equipment for head, hands, legs and feet is re-
commended. Suitable protective clothing reduces the
danger of injury from thrown about cutting material and
accidental touching of the saw chain.
– Use a protective mask when cutting treated wood.
– Check if there is a power cable in the cutting area.
Kickback
Never remove or alter the tip protector! The saw is
equipped with a tip protector to prevent kickback if the tip of
the saw is accidentally pressed against the wood.
Kickback is the sudden backward/upward motion of the
chain saw, occurring when the chain (at the tip of the chain
bar) comes in contact with a log or wood, or when the chain
becomes jammed.
When kickback occurs, the chainsaw reacts unpredictable
and can cause heavy injuries to the operator or bystanders.
Particular attention must be given when sawing sidewards,
slanted or during length cuts, as the gripping teeth (8) usu-
ally can not be applied.
To avoid kickback:
– Saw with the chain bar at a flat angle.
– Never work with a loose, widely stretched or heavily worn
out saw chain.
– Remove the blunt saw chain.
– Never saw above shoulder height.
– Never work with the tip of the chain.
– Always hold a chain saw firmly with both hands.
– Always use a Bosch approved low-kickback saw chain.
– Apply the metal gripping teeth (8) for leverage.
– Ensure correct chain tension.
General Behaviour (see figures E–G)
Always hold the chain saw firmly with both hands. Front
handle with the left hand and rear handle with the right
hand. Fully grip both handles with thumb and fingers at all
times during operation. Never operate chain saw using only
one hand.
Use the chain saw only with secure footing. Hold the chain
saw at the right-hand side of your body.
The chain must be running at full speed before it makes con-
tact with the wood. Use the gripping teeth (8) to support the
chain saw on the wood. Use the gripping teeth as a leverage
point while cutting.
Reset the gripping teeth at a lower point when sawing
thicker logs or tree trunks. For this, pull the chain saw
slightly backwards until the gripping teeth release, and re-
position at lower level to continue sawing. Do not remove the
chain saw completely out of the cut.
Do not force the saw chain while cutting, let the chain do the
work, using the gripping teeth (8) to apply minimal leverage
pressure.
Bosch Power Tools