Poulan 1980-02 - Manual (Page 9)

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Filing out the gullet .
"Jr ' polition
and Stroke
itop viewi
\ r\ r
Correct gullet shape
.025 depth gauge setting
B
r\ /
.030 depth gauge setting
File position
and stroke /
(top view)
This chain was designed so that 80% of the needed
sharpening is accomplished by the saw's built-in sharpener.
While the chain is being sharpened by the built-in sharp­
ener, the cutting edges of the chain are gradually being
altered. These edges may also be damaged if you saw into
rock, dirt, nails, or other foreign materials. In either case, it
will be necessary to reshape the side cutting edge with a
file.
To properly file the Power Sharp Chain you will need a
fileholder and the correct size file. Follow these instruc­
tions:
1. If possible, remove the chain from the saw and put it
in a saw chain filing vise. If you do not have a filing
vise, tension the chain up snugly on the guide bar. Use
a No. 5595 Fileholder and hold it level at a 24° angle
to the chain. Always file from inside of chain toward
the outside.
2. When cutters have been filed back to a point where the
. gullet {see fig.A) extends beyond the cutting edge by
1/16 inch, the gullet should be removed. Do this before
your next cutting edge filing, using the same 7/32" file
and maintaining the same 24° Top Plate Angle. The
correct gullet shape will then be as shown.
3. The factory Depth Gauge settings are .025 inch. The
mark on the depth gauge (see fig. B) is for setting of
.030 inch. If you wish to use this setting, simply file
off metal behind the mark with a round file as shown
in figure B (see arrow).
- 1/32'
A Correctly Shaped
Side Plate,
(inside of cutter)
Top Plate Angle ...
(top view of cutter)
Remember: (a) Normal sharpening is accomplished by the
built-in sharpener, (b) File cutters only when dull and
attempt to keep all cutters the same length. The Side Plate
should always be kept approx. 1/32" longer than the top
plate (seefig. C). (c) Preserve the original filing angles
carefully and uniformly, (d) Care should be taken never to
file into the bottom of the Top Plate.