AL-KO KE 1800/35 Betriebsanleitung Seite 18

3.3 Chain Extension Control
Control the chain extension often because new saw
chains lengthen during the usage.
In the cold state, the saw chain must adhere to lower
side of the guide bar, but it must be able to be pulled by
gloved hand.
Under the operating temperature the saw chain length-
ens and is slack.
Parts of the saw chain must not rise from the
notch on the lower side of the guide bar –saw
chain could jump out. Tighten the saw chain
more.
Guide bar: If you want to avoid one-sided wear of the
guide bar, turn it for every chain change.
3.4 Chain Brake
Your chain saw is equipped with a chain brake that re-
duces possibility of injury due to kickback. The brake is
activated if pressure is applied against brake lever when,
as in the event of kickback, operator's hand strikes the
lever. When the brake is actuated, chain movement and
motor stop abruptly.
The purpose of the chain brake is to reduce the
possibility of injury due to kickback; however, it
cannot provide the intended measure of protec-
tion if the saw is operated carelessly.
Always test the chain brake before using your
saw and periodically while on the job.
3.4.1 Chain Brake Mechanical Test with the En-
gine Switched off
1. The chain brake is disengaged (chain can move)
when brake lever is pulled back and locked to the
front handle (Fig.10). Put protective gloves on.
2. The chain brake is engaged (chain is locked) when
brake lever is in forward position (Fig.11). You
should not be able to move chain.
GB 6
3.4.2 Chain Brake Test when the Engine is Run-
ning
Before you start any work, always test the functionality
when the engine is running.
1. Hold the chain saw securely and firmly by the front
and rear handles.
2. Start the motor.
3. Press the hand guard toward the front (Fig. 11). This
should cause the saw chain and motor to stop im-
mediately.
The motor may not start while the chain brake is
engaged.
The chain saw may not be operated, if the saw
chain does not come to a standstill immediately.
Have the chain saw inspected by a service
workshop.
3.5
Saw Chain Oil
Check the oil level prior to each use and, if re-
quired, top up with chain saw oil.
Use only quality chain saw oil without sticking additive for
lubricating the saw chain and guide bar.
Do not use used oil! Used oil does not have the
required lubricating properties for lubricating the
saw chain and, in addition, is harmful for the
environment.
Oils for saw chains stick when not being used
for longer time. This can cause damage to oil
pump or parts leading the oil
Therefore, prior to each storage:
1. Empty the oil for saw chains out of the oil tank of the
chain saw.
2. Replenish the tank with little engine oil.
3. Allow the chain saw run for some time to enable the
oil leadings and oil pump clean.
Before other use of the chain saw, replenish the tank with
oil for saw chains again.
In order to lubricate the saw chain sufficiently, there must
be enough saw chain oil in the tank at all times. The oil
level can be checked in the viewing glass (Fig. 12). The
oil level may not be below or above "MIN" or "MAX".