Husqvarna 80792 - Manual (Page 3)

3
The most common cause of trimmer
head malfunction is poor mainte-
nance, especially true for tap-for-line,
bump-feed, and fully automatic heads.
Customers buy these heads for
convenience so they don’t have to
reach down and advance the line–yet
that added convenience often means
the head is not properly maintained.
A Few Tips
■ Clean the head thoroughly each time
line is refilled. Wipe all grass and
debris from internal parts. Water will
dissolve accumulated buildup, but a
cleaner such as 409™ will aid in the
task.
■ Replace worn eyelets. Never run a
trimmer head without eyelets in-
stalled. Running with an eyelet
missing will cause the trimmer line to
wear into the body of the head as
well as create excessive vibration.
■ Replace any noticeably worn parts. A
knob at the bottom of a head is a
wear part if it contacts the ground,
especially in abrasive soil conditions
and when the head is run against
sidewalks and curbs.
■ When winding line, keep both strings
separate. Try to wind as evenly as
possible to prevent snarling and
reduce vibration.
■ Trim line ends to equal length from
the eyelet. Operation with uneven
length trimmer line will cause
excessive vibration.
■ Always replace worn or damaged
parts promptly.
■ Make sure line is wound in the
correct direction for the rotation of
the head–
For heads with a LH arbor bolt,
wind line counterclockwise as viewed
from the knob at the end of the
trimmer head.
For heads with a RH arbor bolt,
wind line clockwise as viewed from
the knob.
“Clockwise for RH,
Counterclockwise for LH”
Any plastic material can dry out,
especially when stored at high tem-
perature and when exposed to direct
sunlight. To prevent this, Shindaiwa
packages much of their trimmer line in
all-plastic holders so the line can be
soaked in water to restore moisture.
Trimmer line with very low moisture
content is brittle and inflexible. Wind-
ing dry line on a trimmer head can be
very difficult. After soaking in water,
the same line will become very flexible
and far tougher, and service life will
be significantly extended. NOTE: This
also applies to flail blades.
CAUTION: Remove the bearing or
bushing from from Super Flail blades
before soaking in water.
The Shindaiwa Warranty
Shindaiwa warrants trimmer heads to
be free of defects in materials and
workmanship for 90 days. The war-
ranty is for replacement parts only –
not the entire trimmer head. Damage
caused by wear, running with missing
parts, etc. is not covered.
Q
uestion: Why does Shindaiwa
carry so many trimmer heads?
A
nswer: There are different heads
for different applications. Some heads
feature manual adjustment of line
length while others are tap-for-line
models. In addition, some trimmer
heads are intended for consumer use
and others are intended primarily for
commercial applications.
CONSUMER HEADS
Manual
Midget Head An inexpensive
manual head for small-displace-
ment trimmers.
Tap-for-Line
Bump & Cut An inexpensive tap-
for-line head for small-displace-
ment trimmers.
3-Blade Flail
Economical flail head for weeds,
light brush and grass.
General Trimmer Head Maintenance Information
COMMERCIAL HEADS
Manual
Low Profile Reasonably priced
medium-duty manual head.
High Profile Proven “old reliable”
manual head. Best choice for
abrasive soil conditions where
head is in contact with the ground.
Tap-for-Line
Pro-Matic General purpose tap-
for-line head.
EZ-Load Simple to load, easy to
reassemble.
EZ-Pro Similar to EZ-Load with
larger line capacity.
SemiMatic Tough tap-for-line
head. Stays clean by design. Reel
in cover for fast reloading.
Pro-Head Professional tap-for-line
head.
Fixed-Line Head
One-piece die cast metal head. No
moving parts to lose. First choice
for many commercial users.
Contains grooves in sides to
prevent line shearing when head
contacts solid objects. Permits
cutting lower to the ground than
any other line cutting attachment.
Super Flail Head
Heavy-duty head for thick, tough
grass and brush.
NOTE: Flail-type heads are not a
good choice for stemmy material
such as mature blackberry vines
and tree seedlings.