Toro LAWN-BOY Series Manual page 51

Appendices
Stragglers--random, individual blades of grass that
are not cut when the mower has passed over an area.
Thin / Thick grass--the density or the number of
plants in a specific area. The density of the grass is a
factor in how much volume of grass the mower is
asked to process and in how readily air can enter the
cutting chamber.
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Streaking--a strip of uncut or partially-cut grass. A
streak can be a continuous or broken line or strip of
grass. It can occur during straight runs or only when
making turns.
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Tall grass--grass that is so long that it makes it hard to
follow the 1/3 rule. Generally this is grass 6 or more
inches tall.
Thatch--the tough fibrous part of the plant, similar to a
root, that is above ground but growing laterally rather
than up, sometimes combined with grass clippings that
have not decomposed. Some types of grass create
little thatch; others need the thatch to be removed
periodically.
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Tire tracks--grass pushed down when a mower is
rolled across a yard. Normal, healthy grass will recover
from this in a day or so. Overly-lush or very dry grass
may take longer to straighten up. The grass in a lawn
affected this way may also retain footprints after some
one has walked across it.
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Service Dealer's Guide to Great Quality of Cut 7 - 5