Technical Information · issue 46 of 2006
Engine housing; Chain Sprocket
IssueTI 46/2006
Engine family 1123
Part changes (1)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 1123 162 7900 | 1123 162 7902 | 3 Tension spring The tension spring 1123 162 7900 is replaced by the new version 1123 162 7902. |
Full text
Page 1 of 3
STIH)
Technical Information 46.2006
Chain saws STIHL MS 210, MS 230, MS 250 – Series 1123
Contents
1. Engine housing
2. Chain Sprocket
1. Engine housing 2. Chain Sprocket
The two engine housings 1123 020 3003 and
2.1 Spur sprocket, rim sprocket kit
1123 020 3027 (for Easy2Start™ machines) are
supplied with fitted oil pump 1123 640 3200 The spur sprockets and rim sprocket kits are
(0.55 mm stroke). replaced by new versions. The surface of the new
This makes servicing easier, as it is not necessary versions is chrome-plated to increase the service
to replace the oil pump when replacing the engine life.
housing. The new spur sprockets and clutch drums can be
The oil pump remains available as a separate spare identified by the markings (see arrow) as described
part. in the table.
208TI026 KN
TI_46_2006_30_01_01.fm englisch / English
)m~ge 2 Technical Information 46.2006
Part name Previous New Marking (new)
Chain Sprocket
3/8“ Picco 6 teeth 1123 640 2003 1123 640 2073 1123/73
3/8“ Picco 7 teeth 1123 640 2002 1123 640 2072 1123/72
0.325“ 7 teeth 1123 640 2004 1123 640 2074 1123/74
0.325“ 8 teeth 1123 640 2006 1123 640 2076 1123/76
1/4“ 8 teeth 1123 640 2007 1123 640 2077 1123/77
Rim sprocket kit
3/8“ Picco 7 teeth 1123 007 1025 1123 007 1030 1123/70
0.325“ 8 teeth 1123 007 1026 1123 007 1031 1123/70
0.325“ 7 teeth 1123 007 1027 1123 007 1032 1123/70
2.2 Brake band
208TI027 KN
Left: previous brake band
Right: modified brake band
The brake band 1123 160 5400 will no longer
feature perforations in the material (see arrow).
2.3 Tension spring
The tension spring 1123 162 7900 is replaced by
the new version 1123 162 7902.
The new tension spring is made of a material with
higher thermal stability.
2.4 Service note
The new spur sprockets and rim sprocket kits must
be installed in the previous machine models 021,
023 and 025 when servicing.
TI_46_2006_30_01_01.fm Page 2 of 3
Technical Information 46.2006 Page 3
Summary
Item Part name Previous New Remarks
1 Spur Sprocket 3/8" Picco 7 teeth 1123 640 2002 1123 640 2072 1)
2 Spur Sprocket 3/8" Picco 6 teeth 1123 640 2003 1123 640 2073 1)
3 Spur Sprocket 0.325" 7 teeth 1123 640 2004 1123 640 2074 1)
4 Spur Sprocket 0.325" 8 teeth 1123 640 2006 1123 640 2076 1)
5 Spur Sprocket ¼" 8 teeth 1123 640 2007 1123 640 2077 1)
6 Rim sprocket kit 3/8" Picco 7 teeth 1123 007 1025 1123 007 1030 1)
7 Rim sprocket kit 0.325" 8 teeth 1123 007 1026 1123 007 1031 1)
8 Rim sprocket kit 0.325" 7 teeth 1123 007 1027 1123 007 1032 1)
9 Tension spring 1123 162 7900 1123 162 7902 1)
Modification to be introduced continuously.
Remark
1) Previous version of part remains available for other models
© ANDREAS STIHL AG & Co. KG, 2006 Technical Documentation
D1/MTK-ja
TI_46_2006_30_01_01.fm Page 3 of 3
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.