Technical Information · issue 2 of 2001
Gearhead; Special Servicing Tools for FS Gearheads
Model FS 550 Clearing Saws – Series 4116
IssueTI 2/2001
Part changes (1)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 4116 640 0104 | 4116 640 0106 | The previous gearhead 4116 640 0104 will be Parts availability replaced by the new version 4116 640 0106 from The replacement housing 4116 640 0511 for the serial number 1 48 729 575. |
Full text
Page 1 of 4
Technical Information
02.2001
Model FS 550 Clearing Saws – Series 4116
Contents
1. Gearhead
2. Special Servicing Tools
for FS Gearheads
3. AV System
1. Gearhead
m
m
19 /4")
(3
4116 640 0106
4116 640 0513
398TI021 KN
398TI020 KN
The previous gearhead 4116 640 0104 will be Parts availability
replaced by the new version 4116 640 0106 from The replacement housing 4116 640 0511 for the
serial number 1 48 729 575. The new gearhead previous gearhead 4116 640 0104 is no longer
housing has been strengthened. One M6x35 screw available from the factory. Gear housing
(previously 2 x M5x30) is now used to secure the 4116 640 0513 must be used in its place. The shape
gearhead and optimize the clamping action on the of this gear housing is exactly the same as that of
drive tube. The drive pinion is now supported in the the new gear housing 4116 640 0512. However, the
15 mm wide ball bearing 9503 003 4950 instead of bearing seat for the input pinion is designed to take
the 13 mm wide ball bearing 9503 003 4945. The the previous set of pinions 4116 640 7302 (with
bearing seat in the gear housing and the set of 13 mm wide ball bearing).
pinions have been modified accordingly.
Service note
Gearhead lubrication: The specified maximum
capacity is 15 g of STIHL gear lubricant. Never
overfill the gearhead with grease since this will
cause it to overheat during operation and cause
serious internal damage.
TI_02_2001_02_01_01.fm english / USA
)m~ge 2 Technical Information 02.2001
10 11
12 13
1, 3 2, 5 4
6 7 7
8
9 9
12 13 14
398TI022 KN
Summary
Item Part Name Previous New Remarks
1 Gearhead M14; including items 3, 6, 8, 4116 640 0104 --- 1)
10, 12:
2 Gearhead M14; including items 5, 7, 9, --- 4116 640 0106
11, 13:
3 Gear housing; 4116 640 0511 --- 1)
including items 6 and 8:
4 Gear housing; 4116 640 0513 --- 2)
including items 7 and 9:
5 Gear housing; --- 4116 640 0512
including items 7 and 9:
6 Washer A5.3 (2x) 9291 021 0120 --- 3)
7 Washer A6.3 (1x) --- 9291 021 0140
8 Spline screw IS M5x30 (2x) 9022 341 1070 --- 3)
9 Spline screw IS M6x35 (1x) --- 9022 341 1380
10 Ball bearing 15x32x13 9503 003 4945 --- 3)
11 Ball bearing 15x32x15 --- 9503 003 4950
12 Set of pinions 4116 640 7302 --- 3)
13 Set of pinions --- 4116 640 7301
14 Set of pinions (with M14 collar nut) --- 4116 640 7303 4)
All other parts as before
Modification to be introduced from serial number 1 48 729 575
Remarks
1) Previous version of part is no longer available from factory
2) Part is now replacement housing for gearhead 4116 640 0104 (instead of 4116 640 0511)
3) Previous version of part remains available as spare
4) Part is available for FS 360, 420 with gearhead 4116 640 0102, for conversion from M 12 to M 14
TI_02_2001_02_01_01.fm Page 2 of 4
Technical Information 02.2001 Page 3
2. Special Servicing Tools
for FS Gearheads
Pullers are available with immediate effect to
simplify removal of the gearhead. The new special 4116
servicing tools are available in two sets: 2 M 14
6 7
5910 890 4402 for the gearheads of clearing saw 3 M 12
1
models FS 550, FS 360, 420 (series 4116). 8
5910 890 4401 for the gearheads of FS 350, 450 9
4
(series 4128) as well as FS 220, 280 (series 4119). 10
Each of the two sets comes with a illustrated
5 7 mm
instruction sheet with detailed information on how to (9/32")
use the tool.
4119, 4128 13 3
6 7
12 M 12
1
8
9
11
14
398TI023 KN
6,2 mm
(1/4")
Summary
Item Part Name Part No. Remarks
Puller; including items 1 to 10: 5910 890 4402 1)
1 Ring 5910 893 7003
2 Hex nut M14x1.5, left-hand 0000 955 0906
3 Hex nut M12x1.5, left-hand 0000 955 0905
4 Ring; including item 5: 5910 890 5400
5 Adapter pin 5x50 9385 620 2780
6 Threaded rod 5910 893 8200
7 Hex nut M12 (3x) 9210 260 1400
8 Washer 5910 893 2100
9 Washer 0000 958 0609
10 Bit 5910 893 2800
Puller; including items 1, 3, 6 to 9, 11 to 14: 5910 890 4401 2)
11 Ring; including items 12 and 13: 5910 890 5401
12 Pin 5910 893 2900
13 Pan head screw M4x10 9041 216 0650
14 Bit 5910 893 2801
Remarks
1) can be used for 4116
2) can be used for 4128 and 4119
TI_02_2001_02_01_01.fm
)m~ge 4 Technical Information 02.2001
3. AV System
A modified AV system will be installed from serial Service note
number 1 46 234 103. The right and left-hand Slide the stop buffer 4116 791 2803 onto the drive
clamps and the annular buffers have been given tube so that the molded rubber lip points downwards
new part numbers in this process. In addition, the and projects into the gap in the clutch housing’s
new, annular stop buffer 4116 791 2803 will be clamp.
mounted on the drive tube. The individual parts of
the previous and new versions are not To convert an older machine to the new AV system
interchangeable. The previous parts will therefore it is necessary to install all the new parts.
remain available as spares.
3, 4 2
5
3, 4
1
Summary 398TI025 KN
Item Part Name Previous New Remarks
1 Clamp, right 4116 791 6803 4116 791 6805 1)
2 Clamp, left 4116 791 6802 4116 791 6804 1)
3 Annular buffer 4116 791 2800 --- 1)
4 Annular buffer --- 4116 791 2802
5 Stop buffer --- 4116 791 2803
All other parts as before
Modification to be introduced from serial number 1 46 234 103
Remarks
1) Previous version of part remains available for older machines
Last Technical Information on models FS 550: 34.1999
© 2001 Andreas Stihl AG & Co. Technical Documentation
Waiblingen D1/MTK-sc 7268
TI_02_2001_02_01_01.fm Page 3 of 4
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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.