Echo Pro Attachment Series Operator's Manual page 47

DPAS-2100
Several styles of metal blades are
approved for use on the Brushcutter.
The 8-tooth blade can be sharpened
during normal maintenance. The
clearing blade and 80-tooth blade
require professional service.
Before sharpening, CLOSELY inspect
blade for cracks (look at the bottom of
each tooth and the center mounting hole
closely), missing teeth and bending. If
ANY of these problems are discovered,
replace the blade.
When sharpening a blade, always remove the same amount of materials from
each tooth to maintain balance.
A blade that is not balanced will cause unsafe handling due to vibration and
can result in blade failure.
1. File each tooth at a 30° angle a
specific number of times, e.g., four
strokes per tooth. Work your way
around the blade until all teeth are
sharp.
2. DO NOT file the 'gullet' (radius)
of the tooth with the flat file. The
radius must remain. A sharp corner
will lead to a crack and blade
failure.
If an electric grinder is used, use care not to overheat teeth, do not allow tips/
tooth to glow red or turn blue. DO NOT place blade in cooling water. This will
change the temper of the blade and could result in blade failure.
3. File each tooth at a 30° angle a
specific number of times, e.g., four
strokes per tooth. Work your way
around the blade until all teeth are
sharp.
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MAINTENANCE
30º
Cutting tooth
area
Cutting tooth
radius
30º
Gullet
(Radius)
30º
47