When the cutting edges of the blade
become dull, they can be re-sharpened
with a few strokes of a file.
In order to keep the blade in balance, all
cutting edges must be sharpened equally.
In addition, inspect the chain for correct
adjustment (more frequently with a new
chain). The chain should feel snug but still
pull freely. See Figure 40.
Sharpening Instructions (Fig.41)
File all cutters to the same angle and
depth! Unequal filing may cause the saw
to vibrate or cut erratically!
1.Using a 4.5mm round file, sharpen all
cutters to a 30 angle. Make sure that one
fifth (20%) of the file's diameter is always
held above the cutter's top plate.
For consistent filing angles, use a filing
guide such as Oregon p/n 31692 or
equivalent.
R
2.After all cutters are sharpened, use a
depth gauge joiner (Oregon p/n 106738
or equivalent) to measure the height of
each depth gauge.
3.As required, lower the depth gauges to a
height of 0.5mm. Use a flat file; Oregon
p/n 12211 or equivalent.
4.After all depth gauges have been
adjusted, use a flat file to round each
depth gauge leading edge to its orginal
curvature and angle.
NOTE
38
