ST MP 500 Li 48 Manual De Instrucciones página 134

– you practise first on logs on the ground
or attached to trestles, in order to
get familiar with the machine and the
most suitable cutting techniques.
To use the machine proceed as follows:
• always keep the machine connected
to the correctly worn harness when
working (see paragraph 6.1.2)
• The machine must always be
firmly held in both hands .
Stop the machine immediately
if the chain stops during sawing.
NOTE During use, the battery is
protected against total drainage with a
protective device that switches off the
machine and stops it from working.
6.4.1 Checks to be conducted
whilst working
6.4.1.a Checking the chain tension
The chain tends to stretch gradually
as you work, so you need to check its
tension frequently (par. 6.1.4).
6.4.1.b Checking the oil delivery
IMPORTANT Never use the
machine without lubrication!
Make sure the bar and the chain are
in place when you check the oil delivery.
Start the motor (par. 6.3) and check if the
chain oil is delivered as shown in (fig. 13).
6.4.2 Work techniques
6.4.2.a Delimbing a tree
Make sure there is nothing or nobody
in the area where the branches will fall.
1. Stand opposite the branch you want to cut.
2. Start cutting lower branches
followed by the higher ones.
3. Make first cut from the bottom towards the
top (Fig. 14.A). Complete delimbing by cutting
from top to bottom, as shown in (Fig. 14.B).
6.4.2.b Limbing tree branches
Limbing means removing the
branches from a felled tree.
Be careful of where the branches are
lying on the ground, the risk of them being
under tension, the direction the branch may
go during cutting and the risk of the tree
being unstable after the branch has been cut.
When limbing, it is necessary to
leave the lower, larger branches to
support the trunk on the ground.
Remove the small branches with
a single cut (Fig. 15.A).
It is recommended to cut the tensioned branches
working from the bottom upwards to prevent
the chainsaw from bending (Fig. 15.B).
6.5 ADVICE FOR OPERATION
IMPORTANT Stop the machine (par.
6.6) when moving between work areas.
If the machine should get stuck during
pruning high up, the operator must:
1. stop the machine immediately;
2. pull the pruner out from the cut, lifting
the branch where necessary;
3. if necessary, use a handsaw or second
chainsaw to free the trapped pruner, cutting
at a minimum distance of 30 cm from the
trapped pruner. Cutting operations to free
the pruner must always be performed
towards the end of the branch, (i.e. between
the trapped pruner and the end of the
branch and not between the trunk and
the trapped pruner). This will prevent the
pruner from being dragged by the part of
the branch that is cut away, which would
complicate the situation even further.
6.6 STOP
To stop the machine:
• Release the throttle trigger lever (Fig. 11.A).
After releasing the throttle
trigger lever it takes a few seconds
for the toothed chain to stop.
Always stop the machine:
– when moving between work areas.
Do not keep your finger on the throttle
lock button when moving the machine to
avoid accidentally enabling the machine.
6.7 AFTER USE
1. Remove the battery from its housing
and recharge it (par. 7.2.2).
EN - 10