Husqvarna SD22B5DSA - Manual (Page 17)

CoNTRoLS
17
Blade versatility
Flail Blades
Thatch is the dense layer of clippings, roots and
stems that forms between the soil and the base of
the grass. As thatch builds up, it prevents water,
air and fertilizer from being absorbed into the soil.
This causes shallow root development leading to
vulnerability to drought and frost. Excessive thatch
also creates an ideal environment for insects and lawn
diseases. Power-raking with flail blades removes this
thatch layer and restores your lawn to good health.
Flail blades offer the most aggressive dethatching of
all the blades offered.
Delta Blades
Delta blades were created primarily for overseeding
existing lawn. They effectively incorporate grass
seed into the soil. This is an easy, reliable method for
rejuvenating poor lawns. The delta blade is also useful
as a vertical mower for cutting running stem grasses
and opening up the soil to oxygen, water, nutrients
and other chemicals. Delta blades are also beneficial
on slopes, terraces and in high clay content soils
where water runoff is a problem. The blades should
be set to penetrate the soil to a depth of
1 /
8
" to ¼" with
a maximum penetration of ½".
Check your seed bag for the manufacture’s
recommended depth of application.
Spring Tines
Ideal for the established lawn that is not in need of a
complete renovation but requires dethatching (dry-
spots, fungus, etc.). Spring tines are designed to
pluck dead grass and thatch out of the lawn without
tearing or damaging existing root structure. With the
flexible tines, the lawn is combed only 0.5 cm into the
soil, so it cannot penetrate the root structure. Spring
tines provide less aggressive dethatching than flail
blades. NOTE: Do not use spring tines with bagger
attachment.