Winter Use; Maintenance; Carburettor Adjustment - Zenoah GZ381 Manuel D'utilisation

3. Examine which is the safest procedure to release the
tension.
Note:
In some situations the only safe procedure
is to use a winch and not your product.
4. Keep a position where the tree or branch can not hit
you when the tension is released. (Fig. 82)
5. Make one or more cuts of sufficient depth necessary
to decrease the tension. Cut at or near the point of
maximum tension. Make the tree or branch break at
the point of maximum tension. (Fig. 83)
WARNING:
through a tree or branch that is in
tension.
WARNING:
you cut a tree that is in tension. There is
a risk that the tree moves quickly before
or after you cut it. Serious injury can
occur if you are in an incorrect position
or if you cut incorrectly.
6. If you must cut across tree/branch, make 2 to 3 cuts,
1 in. apart and with a depth of 2 in. (Fig. 84)
7. Continue to cut more into the tree until the tree/
branch bends and the tension is released. (Fig. 85)
8. Cut the tree/branch from the opposite side of the
bend, after the tension is released.
Introduction
WARNING:
safety chapter before you do maintenance
on the product.

Carburettor adjustment

Your Husqvarna product has been designed and
manufactured to specifications that reduce harmful
exhaust fumes.
Function
• The carburettor governs the speed of the engine via
the throttle trigger. Air and fuel are mixed in the
carburettor. The air/fuel mixture is adjustable.
Correct adjustment is essential to get the best
performance from the product.
• The T-screw regulates the throttle setting at idle
speed. If the T-screw is turned clockwise this gives a
higher idle speed; turning it anti-clockwise gives a
lower idle speed.
272 - 009 - 21.06.2021
Do not cut straight
Be very careful when

Maintenance

Read and understand the

Winter use

Running problems can occur when you use the product
in the cold and snowy conditions caused by too low
engine temperature and icing of the air filter and
carburettor. It is therefore often required to partly mask
the air inlet on the starter to increase the working
temperature of the engine.
Temperature -5°C or colder
A special cover is availble to run the product in cold
weather or powder snow.
The cover is mounted on the starter housing. This
reduces the intake of cold air and prevents large
amounts of snow from being sucked in.
CAUTION:
winterising kit or if any measures have been
taken to increase the temperatures, these
changes must be reversed before the
product is used in normal temperature
conditions. Otherwise there is a risk that the
product overheats, which results in severe
damage to the engine.
CAUTION:
that described in this manual must be
carried out by your servicing dealer.
Basic settings and running in
The basic carburettor settings are adjusted during
testing at the factory. Fine adjustment should be carried
out by a skilled technician. For recommended idle
speed, see the technical data section.
To do the fine adjustment of the idle speed T
Adjust the idle speed with the T-screw if it is necessary
to re-adjust.
1. Turn the T-screw clockwise while the engine is
running. Turn the T-screw until the sawchain starts
to rotate.
2. Turn anti-clockwise until the sawchain stops.
If the idle speed is correctly adjusted the engine should
run smoothly in every position and the engine speed
should be safely below the speed at which the saw
chain starts to rotate.
WARNING:
dealer if the idle speed setting can not be
adjusted so that the saw chain stops. Do not
use the chainsaw until it has been properly
adjusted or repaired.
If you fit the special
Any maintenance other than
Contact your servicing
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