Asist AB4P45-45B Instrucciones De Uso página 86

Correct saw chain tension is particularly important
and must be checked both before starting and conti-
nuously during operation. If you find enough time for
this activity, the chainsaw will reward you with good
cutting performance and a longer chain life.
! If the saw chain is too loose or too tight, the spro-
cket, bar, chain and crankshaft bearings wear out
faster.
Turn the tension screw clockwise to increase the
chain tension. By turning the screw counterclockwise,
you reduce the chain tension. Make sure that the
chain fits into the groove exactly around the entire
circumference of the guide bar.
After setting the chain tension, tighten the side cover
nuts as tight as possible. The chain has the correct
tension when it fits exactly around the entire bar and
can be moved by hand (with a glove).
If it is difficult to move the chain along the guide bar
or if it is tight, you have set too much tension. This
condition requires minimal modifications, namely:
Loosen the nuts of the side cover (18). Relieve the
tension by turning the tension screw (3) countercloc-
kwise. Move the chain on the bar backwards and
forwards. Continue to adjust until the chain moves
freely but fits snugly. You can increase the tension by
turning the adjusting screw clockwise.
! NOTICE: The new chain is stretched by operation.
That is why it is necessary to tighten it again after
about 5 cuts. This phenomenon is normal with new
chains, the interval between the need for adjustment
gradually increases.
! CAUTION: If the saw chain is too loose or too tight,
the sprocket, bar, chain and crankshaft bearings will
wear more quickly. In picture no. 4, the cold (A) and
hot (B) tension settings are shown, as well as the
condition when it is necessary to adjust the chain (C).
Chain brake test
Your saw is equipped with a chain brake, which
reduces the possibility of injury due to kickback. The
brake is activated when a voltage is created against
the brake lever, i.e. in case the operator's hand hits
the lever during the recoil. When the brake is applied,
the movement of the chain immediately stops.
! WARNING: The purpose of the chain brake is to
reduce the possibility of injury due to kickback. Ho-
wever, it cannot provide a sufficient degree of protec-
tion if the saw is used without due care. Always check
the functionality of the chain brake before using the
saw, and also regularly while working.
The chain brake is disabled (the chain can be moved)
when the brake lever is pulled back.
The chain brake is engaged (the chain is stopped)
when the brake lever is in the forward position. In this
state, you cannot move the chain freely.
! The brake lever can only engage in one of these
two positions. If you feel a lot of resistance, or if you
cannot get the lever into any of these areas, do not
use the saw. Immediately take it to a specialist servi-
ce center for repair.
Fuel and lubricant
Pour chain oil and two-stroke fuel mixture into the
respective holes. Take care not to spill fuel (danger of
ignition). The mixing ratio for fuel is 25:1.
Before starting the saw, move at least 3 meters away
from the refueling point. Do not start the machine in
closed or poorly connected wasted spaces.
Use only high-quality unleaded gasoline (octane
number at least 90) mixed in proportion
25:1 (25 parts gasoline to 1 part oil) with high-quality
oil for 2-stroke high-speed engines.
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