Bosch UniversalChain 35 Original Instructions Manual page 19

kickback brake has not been deactivated before use and
the chain saw will not start. (see figure E)
Remove the chain guard (7).
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 (15) 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.
Note: Do not stop chain saw after sawing by actuating the
kickback brake (4).
Run-down Brake/Kickback Brake (see figure E)
The chain saw is equipped with two safety features:
The run-down brake stops the saw chain after releasing the
On/Off switch (2).
The kickback brake is a safety mechanism activated
through the activation lever for kickback brake (4) when
kickback occurs. Chain stops immediately.
The following function check should be carried out at regular
intervals. Slide the activation lever for kickback brake (4) to-
wards the front (position ➋) and briefly start the chain saw.
The saw chain must not start. To deactivate the kickback
brake again, pull the activation lever for kickback brake (4)
back again (position ➊).
Do not carry the chain saw by the activation lever for kick-
back brake.
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 safe condition?
– Is the oil reservoir filled? Check oil level gauge prior to
starting and regularly during operation. Refill oil when the
oil level has reached the min fill level at the bottom of the
oil viewing window (26), when the machine is placed ho-
rizontally with the base of the unit on a surface.
– The oil tank filling will last approx. 40 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.
– Is the kickback brake deactivated and its function en-
sured?
– 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-
Bosch Power Tools
commended. Suitable protective clothing reduces the
danger of injury from thrown about cutting material and
accidental touching of the saw chain.
Kickback (see figure E)
Kickback is the sudden backward/upward motion of the
chain saw, occuring 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 (10) 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.
– Sharpen the saw chain as specified.
– 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 low-kickback saw chain.
– Apply the metal gripping teeth (10) for leverage.
– Ensure correct chain tension.
General Behaviour (see figures E–H)
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. Ensure power cord is located to the rear, and keep
it out of the range of the saw chain and cutting material; pos-
ition yourself in such a manner that the mains cable can not
get caught in branches and twigs.
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 (10) to support
the chain saw on the wood. Use the gripping teeth as a lever-
age 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 (10) to apply minimal lever-
age pressure.
Never operate the chain saw with arms fully extended. Do
not attempt to saw areas which are difficult to reach, or on a
ladder. Never saw above shoulder height.
Sawing is optimized when the chain speed remains steady
during cutting.
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F 016 L81 829 | (31.10.2019)