Cutting equipment
The Logosol PMX chain pro-
vides for rapid ripping with
a narrow kerf. But it is more
sensitive than normal chains.
Still, if you keep the cutting
equipment in trim, you will
get the right measurements,
the sawing will be quicker and
the cutting equipment will last
longer.
File before it slows
down
You will sense that the chain
is loosing its edge by the fact
that the sawing slows down,
the guide bar gets hot and the
feed is harder. Stop sawing at
once! At this point it’s really
too late to le. Sawing with a
dull chain exposes the sawing
equipment to great wear and
tear. You must learn to le
before the chain gets dull.
File comfortably
Both hand and electrical
chain filing can give good
results. The machine is faster
and simpler. For hand ling,
we recommend a double le
with a built-in ling gauge.
(Pferd 4 mm, part. no. 9999-
000-0400).
It is much easier to sharpen
the chain if you have a proper
work place. Fasten the guide
bar in a screw vice or a saw
clamp. Best is to build a
table next to the sawmill for
filing and other chain-saw
maintenance. If you have an
electric saw, you will need
a le block (part. no. 9999-
000-0620) to hold the chain
during ling.
Avoid chain breaks
If you saw too long with a dull
chain, it can break under the
cutter where the material is
worn.
If, on the other hand, a drive
link breaks the reason can be
that the chain and the sprocket
are not matched. For best
results you should alternate
ve chains on one sprocket.
When the chains are worn
out, replace the entire set,
including the sprocket. A new
chain placed on a worn down
sprocket can break during the
rst few minutes.
It is not good to drive a normal
3/8” chain and a PMX chain
with the same sprocket.
The guide bar can
pull askew
If the chain has been damaged
on one side or led unevenly,
the guide bar can steer askew.
The guide bar will be pressed
up or down or jumps when it
leaves the log. This way the
chain wears more on one
bar rail and if you continue
to saw, the guide bar will be
worn lopsidedly. Even if you
change the chain, a worn
down guide bar can steer
wrong and the new chain can
be worn down.
A lopsided guide bar can be
xed. File the bar rails until
they are even, using a tool
like a UKF le (part. no. 9999-
000-0450).
Another, more common
reason that the guide bar
pulls askew is that it is so
worn out that the drive link
bottoms in the bar groove and
the chain looses its support
from the guide bar walls. This
can be seen on the chain in
that the tip of the drive link
becomes worn.
The best chain oil
In order for the chain oil to
work well it must be viscous
and thready. When you place
a drop between the thumb
and the index finger and
then open them, long threads
should form. We recommend
Stihl chain oil (part. no. 0781-
516-3353).
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