Technical Information · issue 5 of 2005
Sprocket (clutch drum), worm;Flywheel (ErgoStart);Muffler
IssueTI 5/2005
Engine family 1123
Part changes (2)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 1123 640 7105 | 1123 640 7102 | The new sprockets have a deeper locating groove on the clutch drum for the spring of the worm Worm 1123 640 7105 is replaced by the new (arrows) in order to optimize the spring tension on version 1123 640 7102. |
| 1123 400 1205 | 1123 400 1207 | Left: previous pawl Flywheel 1123 400 1205 is replaced by the new Right: new pawl version 1123 400 1207 on the models MS 210 C and MS 250 C with Easy2Start. |
Full text
Page 1 of 3
STIH)
Technical Information 05.2005
Chainsaws STIHL MS 210, MS 250 – Series 1123
Contents
1. Sprocket (clutch drum), worm
2. Flywheel (Easy2Start)
1. Sprocket (clutch drum), worm 1.2 Rim sprocket sets
The clearance between worm and crankshaft has The rim sprocket sets are replaced by new versions,
been increased to further optimize the clutch see Summary.
function when idling. The new rim sprocket sets have a deeper locating
groove on the clutch drum for the spring of the worm
1.1 Sprocket in order to optimize the spring tension on the clutch
drum.
1.3 Worm
The sprockets are replaced by new versions, see
Summary.
The new sprockets have a deeper locating groove
on the clutch drum for the spring of the worm Worm 1123 640 7105 is replaced by the new
(arrows) in order to optimize the spring tension on version 1123 640 7102. The new worm has a larger
the clutch drum. inside diameter D.
TI_05_2005_30_01_01.fm englisch / English USA
)m~ge 2 Technical Information 05.2005
1.4 Service note
New sprockets and new rim sprocket sets may only
be installed together with the new worm.
The new worm can also be installed with the
previous sprockets.
Summary
Item Part name Previous New Remark
1 Sprocket 3/8“ Picco, 7 teeth 1123 640 2000 1123 640 2002 1)
2 Sprocket 3/8“ Picco, 6 teeth 1123 640 2005 1123 640 2003 1)
3 Sprocket .325“, 7 teeth 1123 640 2015 1123 640 2004 1)
4 Sprocket .325“, 8 teeth 1123 640 2020 1123 640 2006 1)
5 Sprocket 1/4“, 8 teeth 1123 640 2010 1123 640 2007 1)
6 Rim sprocket set Picco 3/8“, 7 teeth 1123 007 1001 1123 007 1025 1)
7 Rim sprocket set .325“, 8 teeth 1123 007 1002 1123 007 1026 1)
8 Rim sprocket set .325“, 7 teeth 1123 007 1003 1123 007 1027 1)
9 Worm 1123 640 7105 1123 640 7102 1)
Modification to be introduced continuously
Remark
1) Previous version of part is no longer available from factory
2. Flywheel (Easy2Start) 2.1 Pawls
Left: previous pawl
Flywheel 1123 400 1205 is replaced by the new Right: new pawl
version 1123 400 1207 on the models MS 210 C
and MS 250 C with Easy2Start.
Pawl 1123 195 7201 is replaced by the new version
The height of the wall is reduced in order to reduce
1123 195 7202.
the tendency to soil.
The position of the pawl stop has been changed on
The pawls contained in the flywheel are modified,
the new pawl.
see 2.1 Pawls.
TI_05_2005_30_01_01.fm Page 2 of 3
Technical Information 05.2005 Page 3
2.2 Service note
Previous and new versions of the flywheel and pawl
cannot be combined with one another.
Summary
Item Part name Previous New Remarks
1 Flywheel; includes Item 2: 1123 400 1205 1123 400 1207 1)
2 Pawl 1123 195 7201 1123 195 7202 2)
Remaining parts as before
Modification to be introduced continuously
Remarks
1) Previous version of part is no longer available from factory
2) Previous version of part remains available
Last Technical Information on the STIHL MS 210, MS 250: 32.2004
© ANDREAS STIHL AG & Co. KG, 2005 Technische Dokumentation
D1/MTK-ja
TI_05_2005_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.