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For the pulling down of a tree we recommend using a bar
longer than the diameter of the trunk, so as to be able execute
the DIRECTIONAL and FALLING cuts with a SIMPLE CUT
(see "technical characteristics" for the recommended length
of the bar).
ATTENTION! We advise against operators with less
experience falling trees with a blade shorter than the
diameter of the trunk!
ATTENTION! Never start the saw without the blade, chain or clutch cover.
The clutch can otherwise separate and cause injuries.
ATTENTION! During use and immediately after stopping the engine the silencer
reaches very high temperatures.
Avoid the contact with these waves to avoid burns. Lend the maximum attention
to the danger of fire especially in presence of flammable materials or gases.
ATTENTION! It is advisable to regulate the carburettor at an authorized
assistance centre. The regulation of the carburettor is fundamental and if
executed incorrectly it can seriously damage the unit.
H1. WORKING OPERATION
• Through the accelerator the carburetor regulates the
number of motor revolutions. The mixing of air and petrol
occurs in the carburetor. This mixing can be controlled. To
be able to better exploit the power of the saw, the
carburetor regulation must be correct.
• The carburetor is equipped with three regulation screws:
H = Maximum nozzle
L = Minimum nozzle
T = Minimum speed
• With the H and L screws you regulate the amount of petrol
that enters the carburettor pushing the accelerator.
Screwing clockwise the mixture of air/petrol is thinner (less
fuel), while screwing anticlockwise the air/petrol mixture is
richer (more fuel). A thin mixture means higher RPMs in
the engine, while a richer mixture means lower RPMs.
• The T screw regulates the accelerator position to the
minimum. Screwing clockwise the slower RPMs rise while
turning anticlockwise the lower RPMs are reduced.
H2. MINIMUM L NOZZLE
With the motor off close screw L by turning it clockwise
without forcing it. Next, reopen it by turning it counter-
clockwise. Turn on the saw without accelerating and look for
the maximum thin RPM rate with the motor at minimum by
screwing or unscrewing and being careful with screw L. When
you have reached the maximum RPM number, open with a _
counter-clockwise turn in the condition in which you find it.
N.B. If the chain is turning at the minimum, turn the T screw
counter-clockwise until the chain stops.
REGULATION
ATTENTION!
carburetor pay particular attention to the
moving chain in that it could provoke injuries.
Regulating the carburettor means conforming the engine to
the local climatic conditions, the available petrol and the type
H. Carburettor
During
regulation
of
G10. DISBRANCHING
ATTENTION! Most accidents caused by saw
KICKBACK happen during the disbranching
process.
Observe the position of the blade tip during the
cutting of branches in tension.
Keep a stable position. Work from the left side of the trunk,
with the body near the saw. As soon as possible lean all the
weight of the body against the trunk.
of two-speed engine used.
The carburettor is set up and tested in the factory. Normally it
shouldn't need any regulation. If the conditions that affect the
working of the carburettor should be such as to require a new
regulation, closely follow the following instructions.
Before executing any regulation, check that the air filter is
clean and that the cylinder is in place.
H2. MINIMUM NOZZLE L
Look for the maximum RPM of the engine carefully screwing the
screw clockwise or counter-clockwise. Then open _ of an
anticlockwise turn. N.B. If the chain should turn at the minimum,
turn the T screw counter-clockwise until the chain stops.
FINAL REGULATION OF THE T MINIMUM
The regulation of the minimum is executed with the T screw.
If necessary, screw the T clockwise with the motor running
until the chain starts to turn. Then unscrew counter clockwise
until the chain stops. The minimum is correctly regulated
when the motor turns regularly in every position and with a
good margin before the chain starts turning.
Maximum nozzle H
ATTENTION! The regulation of the maximum
RPM should be executed only by competent
staff equipped with rev counters. Do not exceed
the suggested number of revolutions.
The H maximum nozzle affects the power of the saw. A mix
that is too poor (screw H excessively turned) increases the
number of turns and causes overheating, causing damage to
the
the engine. Don't exceed the maximum recommended
number of revolutions.
In case of doubts or questions contact an authorized
assistance centre.
ENGLISH - 9
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