Technical Information · issue 37 of 1997
New master control for machines with looped handle
Model Serial No. fo
IssueTI 37/1997
From serial 36 941 204, 36 942 929
Full text
Page 1 of 5
Technical Information
37.97
Hedge trimmer =======================STIHL HL 75==================- Typ 4230
Telescopic pruner====================STIHL HT 75==================- Typ 4138
Brushcutters=========================STIHL FS 75, 80, 85==========- Typ 4137
Lawn edgers =========================STIHL FC 75==================- Typ 4137
New master control for machines with looped handle
soft handle area / stop switch leads / throttle cable
The former master control is replaced by a
new version from the following serial numbers on-
wards.
Model Serial No. fo
FC 75 X 36 941 204
FS 75 X 36 981 252
FS 80 X 36 942 929
392TI014 KN
FS 85 X 36 944 054
HL 75 X 36 959 794
HT 75 X 36 947 527
The former and new version of the master control
Left: Former version
can only be interchanged together with the Right: New version
complete throttle cable.
The new master control includes the following
features and advantages:
2
====For the user===================================================Q
• Designed in line with the latest ergonomic 4
findings
• Soft, comfort grip zones in the handle are~=1==============================N
• Slide control mounted on the top 2========================Q
4
====For the service technician
• Throttle cable with integrated electrical function
for stop switch and ground leads 3====================================P
• Torx housing screws for T20 wrench
• Throttle cable can easily be replaced for repairs
• Fewer service parts 2
1
392TI015 KN
)37.97 - 2
Throttle without stop switch leads
The absence of the stop switch leads is the main
feature of the new master control. The electrical
function of these leads is taken over by the metal 10
cable housing 5=~nd cable 6=in the new throttle
cable assembly. 8
5
The electrical connections to the slide control
on the one hand and the ignition module 8=L========================================S
ground 9=on the other are made via contacts
(arrows), contact springs 7=~nd other leads at the 9
throttle cable ends.
The ground connection on the coil 10=remains
unused when connecting the new throttle cable to
the ignition module. The electrical connection to
ground is instead established via the throttle cable
6/9=which is screwed onto the engine housing
2 7
(refer also to the "Service notes").
6 5
392TI016 KN
Important!
======The engine must not be started
======when the handle grips are disassembled -
======risk of electric shocks!
6XPPDU\
2
23
1
26
31 4 2
12 3
5
6
10
7
8
392TI017 SC
9
10
)=======================================================================================37.97 - 3
Item Part Name Original New Rem.
version version
Master control, complete; 4133 790 1301 --- 1)
including items 1 to 21:
Master control, complete; --- 4137 790 1310
including items 1 to 12:
1 Handle moulding --- 4137 790 1100
2 Clamping collar (2x) 4133 791 9400 4137 791 9400 1)
3 Contact spring --- 4137 442 1600
4 Slide control 4126 182 1705 4137 182 1700 1)
5 Torsion spring 4126 182 4506 4137 182 4501 1)
6 Throttle trigger interlock 4126 182 0806 4137 182 0800 1)
7 Throttle trigger 4126 182 1007 4137 182 1000 1)
8 Torsion spring 4126 182 4507 4137 182 4500 1)
9 Handle moulding, outer 4126 791 0821 4137 791 0800 1)
10 Spline screw IS-M5x12 (2x) --- 9022 341 0960
11 Spline screw IS-M5x16 (2x) 9022 341 0980 --- 1)
12 Spline screw IS-P4x16 (4x) --- 9074 478 3025
13 Spline crew IS-BZ4x19 (4x) 9074 478 3065 --- 1)
14 Square washer (4x) 4126 792 6100 --- 1)
15
16
Detent spring
Screw
4126 182 4705
4126 182 6210
---
---
1)
1)
17 Handling moulding, inner; 4126 790 1102 --- 1)
including item 18:
18 Connector tag (2x) 4126 791 5300 --- 1)
19 Collar screw 4126 182 6205 --- 1)
20 Torsion spring 4126 182 4505 --- 1)
21 Spring nut 9417 003 7510 --- 1)
22 Throttle; 4133 180 1105 --- 1)
including items 24, 25, 28 to 30:
23 Throttle; --- 4137 180 1105
including items 26 and 31:
24 Lead (480 mm) -*- --- 2)
25 Lead (565 mm) -*- --- 2)
26 Lead (100 mm) --- -*- 2)
27 Lead 10 m 0751 010 1110 0751 010 1110
28 Terminal socket (4x) 0751 030 8953 ---
29 Sleeve (3x) 0751 030 8470 ---
30 Conduit (170 mm) -*- --- 3)
31 Conduit (185 mm) --- -*- 3)
32 Conduit (960 mm) 4203 711 7201 4203 711 7201
Modification to be introduced
- HL 75 X 36 959 794 onwards - FS 80 X 36 942
929 onwards
- HT 75 X 36 947 527 onwards - FS 85 X 36 944
054 onwards
- FS 75 X 36 981 252 onwards - FC 75 X 36 941
204 onwards
5HPDUNV
1) Former version of part is still available
2) Part is not available as a single part, must be cut from item 27
3) Part is not available as a single part, must be cut from item 32
)37.97 - 4
Service notes
Inspection, service and repair
must be carried out by specially
trained, authorized personnel.
Service notes not included here can
be found in the Repair Manuals for
the FS 75, 80, 85, FC 75 and HL 75
machines (items 5 and 7).
• Remove torsion spring. • Pull contact spring (1) up slightly
and remove throttle cable (2).
1.===Removal of throttle trigger
=====and throttle trigger interlock
Important!============================• Remove throttle trigger (1) with • Remove throttle trigger interlock
Do not start the machine when throttle cable (2) from peg. and contact spring from peg.
the grip is disassembled is open -
risk of electric shocks!
• Undo screws with screwdriver
(1) 5910 890 2301 (T20).
- Remove handle moulding.
• Unhook throttle cable from thrott- • Remove contact spring from
le trigger. throttle trigger interlock.
)==========================================================================================================37.97 - 5
The parts are assembled in reverse • Pull slide control off handle • Remove torsion spring from peg.
order. molding.
• Throttle cable (1), contact
spring (2), conduit (3)
and insulator (4) must be routed
correctly.
- Torque screws down to 1.0 Nm.
2.===Removal of slide control==========• Undo screws on clamping collers The parts are assembled in reverse
(wrench size T27). order.
- Remove throttle trigger interlock,
see 1. - Remove handle molding from - Torque screws on clamping collars
shaft tube. down to 2 Nm.
• The groove (1) on the slide con-
trol must engage the outer edge
(2) of the molding half.
• The torsion spring (3) must rest
in the mount (4) of the slide con-
trol.
Last Technical Information on HL 75: TI 41.96
HT 75: TI 03.97
FS 75: TI 35.97
FS 80, 85: TI 32.97
FC 75: TI 37.96
1997 Andreas Stihl Andreas Stihl - D1/MTK-na
Technical Documentation 6147 Page 2 of 5
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