47
MCSW40-2
In
more
detail
. . .
2. The height difference between the tooth and the ridge is the cutting depth. When
sharpening the saw chain (3) you have to consider the following points (Fig. 44).
> File angle
> Cutting angle
> File position
> Diameter of round file
> File depth
3. To sharpen the chain proceed as
follows:
> Use protective gloves.
> Ensure the chain is correctly
tensioned.
> Engage the chain brake to lock the
chain on the bar.
4. Use the chain file (27), with
diameter 1.1 times the cutting
tooth depth. Make sure 20 % of the
file diameter is above the cutter’s
top plate.
5. File at an angle perpendicular to
the bar, and at an angle of 25° to
the direction of travel (Fig. 45).
6. File each tooth from the inside
towards outside only. File one side
of the chain first than turn the saw
around and repeat the process.
7. Sharpen each tooth equally by
using the same number of strokes.
8. Keep all cutter lengths equal.
Check the safety depth gauge
height every 5 sharpenings. If the
depth gauges are also trimmed it
is essential that the original profile
be restored.
44
Right-hand
cutter
Left-hand cutter
Bumper tie
strap
Tie strap
Bumper drive
link
Saw chain
direction
45
Sharpening angle
Left-hand cutter
Saw chain
direction
25°
File
direction
Inside
Outside
27
Care and maintenance
