HOMELITE
SAW CHAIN
Your saw has a
fast-cutting
chain with a sprocket which
matches it in
pitch.
When the
chain
is to be replaced,
always install
a
new sprocket of matching
pitch
because
a
worn sprocket would be out-of-pitch and damage lhe
new chain.
Not only
lor
fastest cutting, but
also
for maximum life
of
the chain and all saw
parts,
always keep the chain
in
such
good,
sharp condition that
bearing down hard to
make lhe chain cut ls unnecessary. When the sawdust
turns
from
chips into a line
powder
and
you
lind
your-
sell
pressing
hard
to
feed
the chain, STOP IMMEDI-
ATELY and lile the chain.
Uniformity
and accuracy are
necessary for
success in
liling saw
chain. These are easiest to obtain
with a file
holder
which has
the required 35o top
filing angles
marked
on it, and also holds the lile at correct height
(1/10
ol file diameter above
top
plate
of tooth) to
pro-
duce
the required side
plale
angle and culting
edge.
For new 3/8
pitch
chain,
a
7132 diameler
"fast-cut"
round
file
and
holder
(our
assembly A-23133-A) is re-
quired.
When about
half of the original
tooth steel has
been liled away,
you
should switch first to
a 13164"
diamefer file and
later on lo a 3116tt
diameter file. The
reason
for
using a smaller
diameter
lile is the
slight
taper
of
the
tooth's top
plate
which reduces
the tooth
size.
HOW TO
FTLE
CUTTERS
A chain
liling vise holds
the cutters rock-steady for
filing;
but
you
can do a satisfactory
job
"on
the
bar"
if
you
tighten up the tension a
bit
so
the chain
does
not
wobble,
and do all
of the
filing
near the midpoint of the
bar.
ALWAYS WEAR GLOVES OR
PROTECT YOUR
HANDS WITH A RAG
WHEN WORKING
ON
THE
CHAIN.
Be
sure
to
file all cutters
to lhe same length
-
if
you
re-
place
worn
cutters, lile the new ones back to the same
length
as the other teelh
in
the
loop
so that all cutters
get
a biting
chance.
Here's What
You Should Do:
1. Hold file against
cutter lace
at 35o angle
(marked
on
file holder).
2. Keep file level
-
do not let it dip or rock.
3.
File in one direDtion only-towards
lront
corner ol
the tooth. Move file away
from
tooth face on return
stroke.
4. Use
light
but lirm
pressure,
mostly
towards back ol
tooth. Avoid heavy downward filing
pressure.
The
hofder will keep 10o/o ol lhe tile above the lop
plate,
automatically
producing
a beveled hollow-ground
under edge.
5. Put a
few
lirm strokes
on
every
tooth,
filing all
cutters
on one side
of the chain, then
all cutters on the other.
Rotate file
in holder
occasionally.
HERE'S
WHAT
YOUSHOULD GET:
2. Beveled
under edge.
3. Side
plale
90o
to line of
chain
travel.
6.
A sharp
edge
will
not reflect light. Examine the edge
to see
if the dulled
area
has been removed.
DEPTH GAUGE
JOINTERS,
ADJUSTABLE
OR SET
TYPE
A.23133.A
FILE HOLDER
WITH
I/3'"
DIAMETER
ROUND FILE.
I
w@
THE
FOLLOWING
ARE
EXAMPLES
OF ERRORS
IN
FILING
PRONOUNCED
HOOK: CAUSED
BY:IOO
IIUCH
FILIIIG PRESSUR€
OR
TIP
OF
FILE
HELD
LOW.
CHAIN
WILL GRAB
ANO JERX,
.'.
BACKSLOPE: CAUSED
BY LOWERING HANDLE
END OF
FILE.
CHAIN
FEEDS
UNWILLINGLY,
CUTTER
WEARS
AT THE REAR RIVET HOLE.
THIN,
DELICATE
EDGE:
FILE HELD
TOO LOW.
THE UNDER-CUT
EDGE WILL
BREAK.
BLUNT EDGE:
CAUSED
BY HOLDIIG
FILE
TOO
HIGH
OR COCKING
FILE AT AN ANGLE
<,
tr-,.--gJ
n_l
P^9/
-----\_/
---{l
_-.---__\--l
8,
FLAT FILE
FOR FILING
AND
SHAPING
DEPTH GAUGES,
plate
angle.
EOUIPMENT
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