Periodic Maintenance - EMAK EP 120 Manual De Instrucciones

GB
force applied in tightening the screws should
be no more than can be transmitted through
the key by normal hand pressure.
need to overtighten these screws, since the
force generated by the type of fastening
arrangement adopted is sufficient to
ensure the stability of the assembled
pruner and pole.
STARTING AND OPERATION
1 The pruning saw is equipped with an oiler that
will feed the required amount of lubricant to
the chain automatically during operation.
The quantity of oil dispensed is metered in
such a way as to minimize environmental
impact while guaranteeing the amount needed
to keep the chain properly lubricated.
2 For smooth operation, use an oil of medium
viscosity; do not use reclaimed lubricating oil
as this could damage the pump.
3 Make certain, when starting the engine, that
the chain is clear of the ground and not
touching any object. For starting instructions,
refer to the manual accompanying the
machine.
General hints on correct cutting.
Remember that with the EMAK professional
pruner, the angle of the saw is adjustable through
90°. This means that the operator can decide
which is the best cutting angle to select for the
particular pruning job, and can also rely on a
clear and exact view of the chainsaw when
positioned on the branch to make the cut. The
cut in this instance is made from the top
downwards, with the advantage that no physical
effort need be applied through the line of the cut
since the weight of the machine itself, held by
the operator, is sufficient to carry the pruner
cleanly through the branch. Remember not to
stand directly beneath the branch being cut.
To prevent the bark from tearing, typically at the
end of a through-limb cut, make a shallow
undercut in the branch before making the main
downward pass.
For larger limbs, cut back by stages so as to
lighten the load and make the operation more
manageable. Make repeated passes along the
kerf if necessary.
8

PERIODIC MAINTENANCE

There is no
Never carry out maintenance operations with the
engine running. Make certain that the main
switch is positioned on "STOP".
To adjust the chain tension, follow the procedure
indicated in heading "D".
A new chain may need adjusting more frequently.
Adjustments can be made more effectively with
the pruner removed from the pole, as this will
allow the chainsaw components to be serviced
F
in a workshop.
SHARPENING THE CHAIN
The chain can be sharpened with the pruner
either attached to or removed from the pole of
the machine.
Never remove and/or sharpen the chain without
first shutting off the engine and setting the
switch to the "STOP" position.
In the case of the OREGON 90SG039E model
fitted to your machine, the chain is sharpened
with a rat-tail file of 4 mm (5/32") diameter,
Procure a file guide applicable to the chain, and
file the right hand and left hand teeth in
alternation to an angle between 55° and 60°. If
no file guide is available, tension the chain on the
bar using the relative adjustment screw to hold it
stable, and proceed with the sharpening
operation. Use a flat file to reduce the height of
the limiter, which should be less than 0.6 / 0.7
mm from the plane of the cutting edge.
Check the teeth with a gauge.
G
H