Husqvarna 80792 User Manual
Shindaiwa
Trimmer Head
Guide
How to load and service the
most popular Shindaiwa trimmer heads, including complete
replacement parts information
and other important technical
data.
First To Start. Last To Quit.
Item 80792 6/03
Shindaiwa Trimmer Head Guide
INTRODUCTION
Shindaiwa offers several types of
trimmer heads to meet the requirements of our customers. This booklet
will help you – the distributor and
dealer – to help your customers
decide which trimmer heads to
purchase, as well as give them stepby-step instructions on how to untangle the mess of installing trimmer
line.
Each Shindaiwa trimmer head
comes with a set of instructions on
line installation. In the event that
these instructions are lost or misplaced, feel free to provide your
customers with a copy of the instructions from this booklet that matches
their particular trimmer head.
CONTENTS
page no.
General Trimmer Head
Information.................................... 3
Low Profile Manual Head.................. 4
SemiMatic Trimmer Head ................. 6
E-Z Load and E-Z Pro
Trimmer Heads............................. 8
High Capacity Trimmer Head ......... 10
Midget Manual and High Profile
Trimmer Heads........................... 12
Pro-Matic and Bump ’N’ Cut
Trimmer Heads........................... 14
HomePro Semi-Auto Feed.............. 16
Pro Semi-Matic ............................... 18
ADAPTER BOLTS BY MODEL
Current Models Bolt Size
22F 8mm / MRH
F230 8mm / MRH
22T 7mm / MLH
T230, T231, C230,
T2500, 65001 7mm / MLH
T250, C250 8mm / MLH
T260, T261, C260 8mm / MLH
T270, T271, C270,
T350 8mm / MLH
C350, B450, B530 10mm / MLH
Discontinued Models Bolt Size
BP35 8mm / MLH
B40 10mm / MLH
B45 10mm / MLH
C35 10mm / MLH
F18 8mm / MRH
F20 8mm / MLH
F21 8mm / MRH
LT18 7mm / MLH
LT20 7mm / MLH
T18 7mm / MLH
T20, C20 7mm / MLH
T25, C25 8mm / MLH
T27, C27 8mm / MLH
MLH Male, Left Hand Thread
MRH Male, Right Hand Thread
FLH Female, Left Hand Thread
FRH Female, Right Hand Thread
UN-10.............................................. 20
UN-30.............................................. 21
UN-32.............................................. 22
Flail Trimmer Head ......................... 23
Super Flail Trimmer Head............... 24
Fixed Line Trimmer Head ............... 25
Heavy-Duty Fixed Line Head.......... 26
Adaptors.......................................... 27
2
General Trimmer Head Maintenance Information
The most common cause of trimmer
head malfunction is poor maintenance, 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 installed. 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 temperature 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. Winding 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 warranty is for replacement parts only –
not the entire trimmer head. Damage
caused by wear, running with missing
parts, etc. is not covered.
Q
uestion:
carry so many trimmer heads?
A
nswer:
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.
Why does Shindaiwa
There are different heads
CONSUMER HEADS
Manual
Midget Head
manual head for small-displace-
ment trimmers.
Tap-for-Line
Bump & Cut
for-line head for small-displace-
ment trimmers.
3-Blade Flail
Economical flail head for weeds,
light brush and grass.
An inexpensive
An inexpensive tap-
COMMERCIAL HEADS
Manual
Low Profile
medium-duty manual head.
High Profile
manual head. Best choice for
abrasive soil conditions where
head is in contact with the ground.
Tap-for-Line
Pro-Matic
for-line head.
EZ-Load
reassemble.
EZ-Pro
larger line capacity.
SemiMatic
head. Stays clean by design. Reel
in cover for fast reloading.
Pro-Head
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.
Reasonably priced
Proven “old reliable”
General purpose tap-
Simple to load, easy to
Similar to EZ-Load with
Tough tap-for-line
Professional tap-for-line
3
INSTALLATION INSTRUCTIONS
Low Profile Manual Trimmer Head
Model View
72036-15200
Fits LT18, T18, T20, C20, LT20, T230,
C230, 22T
72005-92001
Fits F20, T25, C25, T27, C27, BP35,
T250, C250, T270, C270, T260, C260,
T350
72017-92001
Fits C35, C350, RC45, B45, B450
NOTE: Operating with trimmer line of
uneven length will cause excessive
vibration. Always make sure the line is
wound evenly and trimmed to equal
lengths from the eyelets.
Line Chart
72036-15200
72005-92001
72017-92001
Shipped with
20 feet of .080 line.
Maximum fill–
40 feet of .080
30 feet of .095
26 feet of .105
1 2 3
Remove the knob and spring (turn
counterclockwise to remove).
Remove the line spool. Clean the spool, housing and eyelets.
4 5 6
Reattach the eyelets if they were
removed. Never operate a trimmer
head head without eyelets!
Replace the line by threading it
through the eyelet in the spool until
the line ends are of about equal
length. Refer to the Line Chart
(above) for the proper amount of line.
Inspect for wear and damage.
Replace damaged components.
Bend the line at the eyelet to form two
lengths. Wind both ends clockwise as
viewed from the underside of the
head.
4
To advance line: With the engine off, loosen the bottom knob a few turns in
the direction of rotation. Grasp the trimmer head in both hands. Rotate the
bottom of the spool clockwise and pull the line through the eyelets. Re-tighten
the knob before operating the trimmer.
7 8
Use your finger to separate the line
into two sections. Doing so will assist
in a smooth line feed when the head
is reassembled.
9 10
Hold the spool over the housing and
feed one line end into an eyelet. As
you place the spool in the head, feed
the other line into the opposite eyelet.
Make sure one line does not slide
under the spool.
11 12
Holding the spool and wound line
in one hand, place the lines 180
degrees apart.
Tip: Sometimes it’s easier to remove
one eyelet to install the second piece
of line. Slide the eyelet over the line
two to three inches, then push the
eyelet in place as the spool is replaced in the housing.
1" to 2"
PARTS LIST
1 Adapter Bolt
2 Outer Housing
3 Inner Spool
4 Eyelets
5 Spring
6 Button/Knob
Low Profile Head
72036-15200
Item Part No.
1 72036-15210
2 72005-92740
3* 72005-92630
4 72005-92720
5 72005-92660
6 72005-92770
72005-92001
Item Part No.
1 72005-92710
2 72005-92740
3* 72005-92630
4 72005-92720
5 72005-92660
6 72005-92770
Reinstall the spring and knob. Tighten
securely.
A properly wound and reassembled
head should have four or five inches
of line extending from each eyelet and
the overlap should be one to two
inches. Trim as needed to final length.
72017-92001
Item Part No.
1 72017-92710
2 72005-92740
3* 72005-92630
4 72005-92720
5 72005-92660
6 72005-92770
*2 required
5
INSTALLATION INSTRUCTIONS
SemiMatic Trimmer Head
Model View
99909-15500
Fits LT18, T18, T20, C20, LT20, T230,
C230, 22T
99909-15600
Fits F20, T25, C25, T27, C27, BP35,
T250, C250, T260, C260
NOTE: Operating with trimmer line of
uneven length will cause excessive
vibration. Always make sure the line is
wound evenly and trimmed to equal
lengths from the eyelets.
Line Chart
99909-15500
99909-15600
Shipped with 10 feet of .095 line
Maximum fill–
1 2 3
40 feet of .080
26 feet of .095
20 feet of .105
Turn the knob clockwise to remove
the knob and spool (one piece). Make
sure the white lock tab is visible in the
“L” window on the knob before starting
to turn.
Remove the knob and spool. Clean the housing and spool and
4 5 6
Spool Saver
Slot
Replace the line by threading it
through the eyelet in the spool until
the line ends are of equal length.
With the knob facing away from you,
wind the line counterclockwise. Hook
the line into line saver slots in the
spool housing.
inspect for damage and wear. If the
eyelets are worn excessively, replace
the housing. Note: The inner and
outer cams in the spool can be
serviced by a dealer.
Install the knob and spool in the
housing while threading the line
through the eyelets. Pull the line to
seat the spool.
6
7
PARTS LIST
1 Adapter Bolt
2 Outer Housing
3 Spring
4 Washer
Turn the knob/spool counterclockwise
to lock the spool in the housing. You
will feel a firm “click” when the white
lock tab snaps into place.
8
1" to 2"
A properly reassembled head should
have four to five inches of line extending from each eyelet, and the total
overlap should be one to two inches.
SemiMatic
99909-15500
Item Part No.
1 72036-15210
2 99909-15510
3 99909-15520
4 99909-15530
5 99909-15540
6 99909-15550
7 99909-15560
5 Cam Assembly
6 Cam Lock
7 Inner Spool
99909-15600
Item Part No.
1 72005-92710
2 99909-15510
3 99909-15520
4 99909-15530
5 99909-15540
6 99909-15550
7 99909-15560
9
Trim the line to equal length as
required to avoid excessive vibration.
7
INSTALLATION INSTRUCTIONS
E-Z Load and E-Z Pro Trimmer Heads
E-Z Load E-Z Pro
E-Z Load
99909-017
Fits LT18, T18, LT20, T20, C20, T230,
C230, 22T
99909-018
Fits F20, T25, C25, T250, C250, T27,
C27, T270, C270, T260, C260, BP35
99909-018RB
Fits 22F
E-Z Pro
99909-028
Fits T25, C25, T27, C27, T250, C250,
T270, C270
99909-020
Fits B40, B45, B450, C35, C350,
RC45
1 2 3
NOTE: Operating with trimmer line of
uneven length will cause excessive
vibration. Always make sure the line is
wound evenly and trimmed to equal
lengths from the eyelets.
Line Chart
E-Z Load
99909-017
99909-018
Shipped with 15
feet of .095 line.
Maximum fill–
45 feet of .080
34 feet of .095
32 feet of .105
E-Z Pro
99909-028
99909-020
Shipped with 15 feet
of .095 line.
Maximum fill–
50 feet of .080
40 feet of .095
36 feet of .105
Press the upper body in at the spots
marked “Push Open”. Pull the lower
part of the trimmer head down.
Remove the line spool from the lower
body of the trimmer.
4 5 6
Clean and inspect the spool, housing
and eyelets. Replace worn or damaged components.
Cut two equal lengths of trimmer line,
no longer than 25 feet each. Place an
end from each piece of line in the
holes in the center of the spool.
If nylon line is extending through the
eyelets, push the bump knob in while
rotating the line spool until the slots in
the spool line up with the eyelets, then
remove the spool.
While holding the line ends, pull each
line down toward the inside of the
spool through the slots next to the
holes.
8
7 8
PARTS LIST
1 Outer Housing
2 Adapter Bolt
3 Inner Spool
4 Outer Cover
With line saver slots facing away from
you, wind the line clockwise on the
spool. Use a finger to keep the two
lines separate (spool shown is for
99909-017).
9 10
Thread the ends of the line into the
eyelets in the housing. Do not allow
line to go under spool.
11 12
1" to 2"
Lock the ends of the line in the line
saver slots in the spool.
Replace the cover by aligning the
tabs, then snap the cover in place.
Pull line free from the line saver slots.
E-Z Load
99909-017
Item Part No.
1 101134
2 102351
3 101030
4 101135
5* 105115
6 107001
7 101136
8 101137
99909-028
Item Part No.
1 101170
2 102349
3 101171
4 101172
5* 106007
6 107001
7 101136
8 101137
5 Eyelets
6 Spring
7 Button/Knob
8 Retaining Ring
E-Z Pro
99909-018
Item Part No.
1 101134
2 102350
3 101030
4 101135
5* 105115
6 107001
7 101136
8 101137
99909-020
Item Part No.
1 101170
2 102350
3 101171
4 101172
5* 106007
6 107001
7 101136
8 101137
Check for a maximum line overlap of
one to two inches (four to five inches
of line extending from each eyelet).
*2 required
Trim as required to final length.
9
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