ENGLISH
- 4
C. Safety devices
Your saw is equipped with the following security devices:
C1. CHAIN BRAKE WITH PROTECTION
ATTENTION! Your saw is equipped with a
safety chain brake designed to block the chain,
in case of KICKBACK, in a few milliseconds.
Despite the presence of this useful safety devi-
ce, the following of the security prescriptions
described in this manual is fundamental.
To prevent and reduce the occurrence of a
KICKBACK, always firmly grip the saw with
both hands.
What is a KICKBACK?
1.
The KICKBACK is a violent movement that causes the bar
to suddenly jump up towards the operator when it meets
an object with the upper part of the tip. Such a movement
could cause you to lose control of the machine.
2.
A KICKBACK always occurs along the blade’s cutting
edge. Usually the KICKBACK takes place with a sudden
movement upwards, but they can happen in other
situations depending on the position of the saw during
cutting.
3.
The KICKBACK occurs when the “risk” area of the bar
meets an object.
ATTENTION! Work carefully and be sure that
the “risk of KICKBACK” area never comes in
contact with any objects..
Verify that the brake chain is working correctly and check
the following on a daily basis:
4.
That the chain brake (A) is disconnected when the brake
lever (B) is pulled back and blocked (the chain moves).
5.
The chain brake (A) is inserted when the brake lever (B) is
pushed forward (the chain is blocked). The movement
activates a spring device that acts on the brake ribbon (C)
pushing it to block the drive system of the chain (D).
ATTENTION! If excessive strength is necessary
to insert or disconnect the brake or neither of
the positions of the lever moves DO NOT USE
THIS MACHINE ANY REASON! Take it immedia-
tely to an authorized assistance center.
Always conduct efficiency checks on the brake before using
the machine (see procedure described in the maintenance
chapter)
The brake chain reduces the risk of accidents, but operator
good sense can avoid them as well.
The protection doesn’t serve only to activate the brake chain:
it also reduces to a minimum the risk of a hand coming into
contact with the chain if you lose hold of the handle.
The KICKBACK can be produced if the end part of the bar
makes solid contact with the wood or other object. Therefore,
you avoid beginning the cut with the part of chain at the
above-mentioned angle.
ATTENTION! The chain brake doesn’t provide
total protection if the machine is operated
without necessary precautions and maintenan-
ce.
ATTENTION! Do not dismantle or tamper with
the chain brake mechanism. In the event of the
machine performing poorly or replacement of
some particular part, please rely exclusively
upon an authorized assistance centre.
The chain brake automatically intervenes due to inertia, in the
case of a violent KICKBACK.
In the event of less violent movements the chain brake is
applied by the left hand. It can also be inserted manually by
pushing the brake lever forward.
If the chain brake is intervened, before restarting it must be
reloaded by bringing the antiKICKBACK protection back
towards the front handle.
ATTENTION! ALWAYS disengage the brake
before every setting in motion of the machine in
order to avoid it breaking.
Use the brake chain as a wait brake during every
moving.
C2. THROTTLE TRIGGER LOCKOUT
The throttle trigger lockout device prevents involuntary
acceleration. When the accelerator block (A) is pushed on the
handle (while gripping the saw) this frees the accelerator (B).
Releasing the handle, the accelerator and the accelerator
block are blocked in the rest position. This mechanism is
activated by two independent return springs. In this position
the engine turns at a minimum.
ATTENTION! Never use the saw with the thrott-
le trigger lockout device pressed with adhesive
tape, string or any other means.
C3. STOP CHAIN CATCHER
This machine is supplied with a stop chain catcher located
under the pinion. The mechanism is designed to stop the
movement behind the chain in the event of breaking or dis-
charge from the bar. These occurrences are avoidable by set-
ting the chain correctly (see chapter “D. Assembling Bar and
WARNING! Never use the saw if the safety devices are defective or damaged.
Follow the instructions for checks, maintenance and service.
