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MA1 NTENANCE
CAUTION
:
Always be sure that the tool
is
switched off and unplugged before attempting to perform
inspection or maintenance.
Filling saw chain
To
get the most in cutting performance from your tool, you must keep the cutters sharp
and filed properly
as
shown below.
TOP PLATE ANGLE SIDE PLATE ANGLE TOP FILING ANGLE
Cutter
Raker
,
A
top
plate angle
of
If
you have filed the
top
30'
IS
ideal
85'.
and side plate correctly
the
to
filling angle
will
be
60
-automatically.
File
the side plate
to
8
Fig.
2
To file the saw chain, push the file in the
direction of the arrow. When pulling
it
back, be careful not to touch the cutters
with the file.
Fig.
25
After
a
saw chain has been filed
two
or three times, the "raker"
(see
Fig.
24)
may need
to be filed down slightly. This
is
because the raker
acts
as
a
depth gauge for the cutters.
As the cutters are filed, they lose some height due to their angled shape. Eventually, the
cutters will become lower than the depth gauge and consequently, will not be able to
cut.
To
remedy this, use
a
flat file to file the tops of the rakers
so
that they are about
0.5
mm
(0.025")
below the tips of the cutters
(see
Fig.
24).
Be
careful not to file the
rakers excessively or the cutters will be allowed to take too large of
a
"bite", causing
the tool to
stall
or snag in the cut.
16