Echo GT-2150 Operator's Manual page 19

SCALPING
The cleaning of weeds and grass down to the earth
can be accomplished very easily with the nylon
line.
Scalping around trees and bushes is particularly
effective, but care should be exercised not to
bruise the bark of young and sensitive growth. In
flower beds, always remember that the nylon line
will cut in a complete circle to avoid cutting flowers
instead of weeds.
SWEEPING
Sweeping grass and other debris from a hard surface
can be done very quickly.
19 GT-2150/2150S