Technical Information · issue 24 of 2005
Gear head (0° and 135° adjustable); Shaft HL 75 K, HL 100 K (handle hose, carrying ring), loop handle with bar; Blade (supply of spare parts, reduction in weight); Summary
IssueTI 24/2005
Part changes (2)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 4230 791 2000 | 4230 791 2002 | (handle hose, carrying ring), loop handle with bar The previous handle hose 4230 791 2000 (185 mm long) is replaced by the new 230 mm long version 4230 791 2002 on all "K" models (with short shaft). |
| 4230 790 8800 | 4230 790 8801 | The previous carrying ring 4230 790 8800 is replaced by the modified version 4230 790 8801 in future. |
Full text
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STIH)
Technical Information 24.2005
HL and FH (attachments), HL-KM and FH-KM (CombiTools)
HL 75, HL 75 K (hedge trimmers) – Series 4230
HL 100, HL 100 K (hedge trimmers) – Series 4280
HL 45 (hedge trimmers) – Series 4232
Contents
1. Gear head (0° and 135° adjustable)
2. Shaft HL 75 K, HL 100 K (handle hose, carrying ring), loop handle with bar
3. Blade (supply of spare parts, reduction in weight)
4. Summary
1. Gear head (0° and 135° adjustable)
TI_24_2005_30_01_01.fm englisch / English USA
)m~ge 2 Technical Information 24.2005
The gear heads for the STIHL hedge trimmers and Innovations and benefits
scrub cutters (0° and adjustable versions) are now
produced in a new version. In addition to technical
innovations, the new gear heads also yield distinct
advantages in use.
1.1 Technical description
. Larger range of possible applications – can be
adjusted in 13 stages
. A = Cutting blade of the adjustable version can
be folded parallel to the shaft
. B = The adjustable version has a working range
of 135°
. Blades are blocked in transport position
(adjustable version)
. Housing parts made of magnesium
. New, optimized pinion sets and ball bearings
. Cutting blade folds up for compact transport
(transport position)
. Distinctly lower weight of gear head makes the
work less fatiguing
. Longer service life
. Fewer housing parts – easy to service
Handling
The cutting blade of the "135° adjustable" cutting
attachment can be adjusted from 0° (straight) to 90°
(downwards) in eight stages and to 45° (upwards) in
four stages. This yields a total of 13 possible
HL / FH gear head settings for the working position; these are defined
1 = Previous version (0° – 90° adjustable) by numbered holes on a perforated strip.
2 = New version (135° adjustable) . When adjusting to the required position, the pin
of the adjusting sleeve is simply allowed to
. New, simplified housing design
engage in the corresponding hole on the
perforated strip.
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Technical Information 24.2005 Page 3
. The cutting blade must always be set to the 3. Blade (supply of spare parts,
straight (0°) position when starting the engine. reduction in weight)
. The engine must be switched off before setting
To simplify stock-keeping, replacement blades for
to the transport position.
the previous and new hedge trimmer and scrub
. The engine must never be started when the cutter versions (complete machines, attachment
cutting blade is in the defined transport position tools, CombiTools) will only be supplied in pairs
or in one of the positions between 45° (top) and instead of singly in future.
the transport position. The cutters are blocked in
Completely pre-assembled cutting attachments
this range and the clutch would very quickly be
remain available for more complex repairs (see
damaged by the high engine revs.
spare parts list).
1.2 Specifications
The weight of the HL 0° has been reduced by 400 g
and that of the HL / FH 135° by 300 g (in relation to
the previous 0°…90° version).
Weight of the complete cutting attachment (gear
head and cutters):
HL 0°: 1.6 kg
HL 135° adjustable: 2.0 kg
FH 135° adjustable: 1.8 kg
388TI005 SC
1.3 Service notes / spare parts
The individual parts of the previous and new
gearhead versions are not interchangeable. The HL cutting blade
assemblies and individual parts of the previous gear Top: new version (with reduced weight)
heads are therefore still available. Part numbers for Bottom: previous version
the new spare parts are listed in the spare parts list.
The blades (500 mm / 20") for HL models feature
additional cut-outs to reduce their weight and are
available for replacement under the new part
2. Shaft HL 75 K, HL 100 K number 4230 710 6053 (set of 2).
(handle hose, carrying ring),
loop handle with bar
The previous handle hose 4230 791 2000 (185 mm
long) is replaced by the new 230 mm long version
4230 791 2002 on all "K" models (with short shaft).
The previous carrying ring 4230 790 8800 is
replaced by the modified version 4230 790 8801 in
future. The shafts for "K" models consequently have
a new part number (see spare parts list).
Note concerning the scope of supply: only the
versions with "135° adjustable cutting attachment"
and long shaft are supplied with loop handle and bar
in future.
TI_24_2005_30_01_01.fm
)m~ge 4 Technical Information 24.2005
4. Summary
Item Part name Previous New Remarks
1 Handle hose, 185 mm long 4230 791 2000 --- 1)
2 Handle hose, 230 mm long --- 4230 791 2002
3 Carrying ring 4230 790 8800 4230 790 8801 2)
4 Blade; including Item 5 (2 ea.) --- 4230 710 6050 3)
5 Blade 500 mm / 20" 4230 710 6002 --- 4)
6 Blade; including Item 7 (2 ea.) --- 4230 710 6053 3)
7 Blade 500 mm / 20" (reduced weight) --- -*- 4)
8 Blade; including Item 9 (2 ea.) --- 4230 710 6052 3)
9 Blade (FH) 4230 710 6015 -*- 4)
10 Blade; including Item 11 (2 ea.) --- 4230 710 6051 3)
11 Blade 550 mm / 22" 4230 710 6005 -*- 4)
All other parts see spare parts list
Modification to be introduced continuously
Remarks
1) Part remains available for older machines as well as other versions and model series
2) Previous version of part only remains available from factory while stocks last
3) Part is supplied as replacement instead of the single blade
4) Part is not (no longer) available singly
Last Technical Information on the STIHL HL / FH: 42.2004 (HL 75, FH 75); 31.2003 (HL 100)
© ANDREAS STIHL AG & Co. KG, 2005 Technical Documentation
D1/MTK-sc
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Extracted from the manufacturer's 2012 service catalogue. Most of these PDFs embed fonts with a shifted character map, so the text above was recovered rather than copied — read it as a faithful but imperfect transcription, and treat the page image above each block as the authority where the two disagree — the figures exist only there, because they are vector drawings that text extraction cannot keep.