40
Top:
RUng
angle
Center: Side plate
angle
Bottom:
1hbIe
of
file
~ers
'.
' .
"
"
,
.~.
-';'.<,.:
:··:::r<~~
<:~
'
::
~"
~
.'.
'~
.
\
.
Chain
pitch '
Filedia.
RleNo.
' .325" (8.25mm)
Ra,:rid'~.r
(4.8mm)·
08,141,
80ss
. '
~25"
(8.25·mm) Topic
%f(4~o.
,
mmFO)1
,
4
242
~
. W ..
(9.32mm)·RaPid¥ltf(4~8mm)Q8114118088
W (9.32 mm) Topic
~
(4.0 mm) 0814 242
~
.404"
(10~
n'lm)
~tf
(4.8 mm)
0811
411
8088
W
(12.7r.nin)
tAli
(6.3mm) 0811411
811~
Side
plate
angle
The
upright cutting
edge
just
below the top plate is
known
as
the side'
Plate
cutting edge.'
The
side, plate
angl~
is,
therefore, the angle between the side
plate
cutting edge
and
the horizontal·
line
formed
by
the cutter toe
and
heel.
The
following side plate angles are
specifiEl9:
Rapid-standard
Rapid-Micro
Raptd-Super
Topic-Micro
Topic-Super
These
angles' are obtained automatically
if
you use a file
holder
or
roller
flUng
guide
withthespectfied
size
of
tile
(diameter)
and hold the file correctly during sharpening.
Top
plate
cutting
angle
The
top
~ate
cutting angle is the. rnost important
angle
since it influences the chafn'scutting behavior
•.
It is also
obtained . automatically
if
sharpening is performed
pr0-
perly with a suitable STlHL
sharpening
tool.
Sharpening
OnlyspeciaJ saw chain flies
may
be
used
for
sharpening
and
they
must
match
the
chain concerned·
(basic
. type,
pitch). The
shape
and
cut
of
machinists' flies makes them
unsuitable
for
saw chain. It is
best
to use the
speciaJ
chain
fllewith
:
aflle
holder
or
other
flUng
-aid.
Always
file
from
the
inside
to
the
outside
of
the
CIdIer. If
yoU
sharpen
the
chain while It
Is
on the bar, increase chain tension before
filing
and
reset
It
to correct tension afterward.
All cutters must
be
filed to
the
same
length. Since
the
top
plate slopes downward
to
the
rear (clearance
angle),
the
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