Technical Information · issue 41 of 1996
New long-reach hedge trimmers
Model Sound pressure Sound power
IssueTI 41/1996
Full text
Page 1 of 4
Technical Information
41.96
Model HL 75 K and HL 75 Long-reach Hedge Trimmers - Series 4230
The new STIHL HL 75 K and HL 75 long-reach The units are convenient to use because of their re-
hedge trimmers further expand the STIHL line of latively low weight, 6.1 kg/13.4 lb and 6.3 kg/
products for grounds maintenance. These units 13.9 lb respectively) and are equipped with a
are designed to supplement a conventional hedge powerful engine (0.9 kW/1.2 bhp).
trimmer.
The powerhead is the same as that used in
Two different versions are available so that users STIHL FS 75, 80 and 85 brushcutters. Many
can choose the unit that best suits the special other assemblies have been taken from these
applications concerned: brushcutter models (such as the control handle,
•=fn=the=str~ight=0 version=Eei=TR=hF=the=cutting===loop=h~ndleI=sh~ftI=ge~rhe~dFK
blades are in line with the drive shaft and
the unit has an overall length of approx. 200 cm The reciprocating cutting blades are 550 mm
(79 in). (21.6 in) long and double-edged to cut in both
•=fn=the=30 version=Eei=TRF=the=cutting=bl~des======directionsK
are fixed at an angle of 30° to the drive shaft
and the unit has an overall length of approx.
240 cm (94 in).
)Technical Information 41.96 - Page 2
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1. Technical Description
2. Specifications
3. Cutting Blades
4. Special Accessories for User
5. Service Accessories
6. Repairs
1.=====Technical Description
Many of the assemblies are identical to those used in models FS 75, 80, 85 (engine, shaft, control handle,
loop handle) – differences are described in detail.
*HDUKHDG
• Construction as in STIHL FS 80, 85, with a connecting flange adapted for the cutting blade drive.
Cutting blade drive
• Construction as in STIHL HS 75, 80, 85, with modified connecting flange and housing.
2.========Specifications===============================================================fo
Specifications are generally the same as those of model FS 75, 80, 85 - the differences are listed below.
2.1 Engine
Model Sound pressure Sound power
level Lpeq level Lweq
to ISO 7917 1) to ISO 108841)
dB (A) dB (A)
HL 75 K (0° version) 91 103
HL 75 (30° version) 91 104
1)
Data includes idling, full load and full throttle/no load with the same duration of exposure
2.2=======Dimensions / Weights
2.2.1=Overall length
HL 75 K: approx. 200 cm (79 in)
HL 75: approx. 240 cm (94 in)
)Technical Information 41.96 - Page 3
2.2.2=Weights
HL 75 K: 6.1 kg (13.4 lb)
HL 75: 6.3 kg (13.9 lb)
3.====Cutting Blade
Length 550 mm (21.6 in), double-edged, blade sharpening angle 45°
4.====Special Accessories for User
Part Name Part No. Application, Remarks
Flat sharpening file 0814 252 3356 Resharpening cutting blade
5.====Service Accessories
5.1===Special Servicing Tools
The same special servicing tools are required as for FS 75, 80, 85 brushcutters and HS 75, 80, 85 hedge
trimmers.
5.2===Servicing Aids
Part Name Part No. Application
Carburetor parts kit 4133 007 1060 Walbro WT 447
Carburetor parts kit 4226 007 1060 Zama C1Q-S28A
6.====Repairs
If the unit is started up in the course of repairs or maintenance work, always observe all local
regulations and the safety precautions outlined in the owner¶s manual.
Setting and test data as well as other procedures are generally the same as for model FS 75, 80, 85 -
differences are listed below.
6.1===Tightening Torques
Fastener Thread For Torque
size component Nm lbf.ft
Spline screw lS-M4x16 Gear cover/gear housing 3.5 2.6
Nut M5 Blade 9.5 7.0
Spline screw IS-M5x20 Blade guide/gear housing 9.5 7.0
Spline screw IS-M5x20 Gearhead/gear housing 9.5 7.0
Screw plug M11x10 Cutting blade drive 9.5 7.0
)Technical Information 41.96 - Page 4
6.2===Service Note=====================================Cod=Type of Repair=======================HL 75
H
A service manual will be made available for the
STIHL HL 75 in the foreseeable future.
This service manual contains no chapters on
1 Crankcase, Short Block 2.1
"Servicing the Carburetor", "Troubleshooting"
or standard repairs. These procedures are 2 Crankcase and/or Bearings 2.2
described in separate manuals. 3 Crankcase Gasket, Sealing 2.0
4 Crankshaft Seals 0.7
6.3===Repair Times=====================================R====`ylinder and/or Piston 0.8
6 Ignition 0.5
The specified repair times assume that the work 7 Fuel Hose, Fuel Supply 0.5
is performed by trained personnel in a properly
8 Replace Gear Box Assy 0.5
equipped service workshop.
9 Carburetor 0.7
The repair times are given in tenths of an hour 10 Fan Housing, Clutch Housing 0.8
(0.1 = 6 minutes). 11 Front Handle, Throttle 0.6
12 Recoil Starter 0.5
Note:=qhis repair times table for the long-reach 13 Clutch 0.5
hedge trimmers can be used to supplement the 14 Drive Tube, Drive Shaft 0.5
STIHL repair times table manual.
15 Muffler 0.4
16 Air Filter, Filter Cover 0.3
17
18
Stop Switch
Fuel Tank
0.4
0.4
19 Replace Arbor Gears 0.8
20 All Other Repairs & Misc. 0.5
Repairs
✂
Note:=^ll repairs include diagnostic time.
Andreas Stihl D1/MTK-sc
© 1996 Andreas Stihl Technical Documentation 5887 Page 2 of 4
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