Technical Information · issue 12 of 2004
Tank vent (020 T, MS 200 T only); Carburetor with accelerator pump; Summary
IssueTI 12/2004
Engine family 1129
Full text
Page 1 of 3
STIH)
Technical Information 12.2004
Chainsaw STIHL 020 T and MS 200 T – Series 1129
Contents
1. Tank vent
2. Carburetor with accelerator pump
3. Summary
1. Tank vent
Service note
The previous tank vent should be replaced by the
new tank vent with black cap when servicing the
tank ventilation system or tank housing.
Valve 1110 353 1600 must also be checked during
such service work to ensure that it is correctly
seated in the tank housing. The valve must be
replaced if the valve plate is raised off the sealing
surface or if the valve is damaged.
162TI017 KN
Left: Previous tank vent with white cap
Right: New tank vent with black cap
An optimized tank vent is now available in order to
further improve operation. The new tank vent is
distinguished from the previous version by its black
cap. The part number 1129 350 5850 remains
unchanged.
TI_12_2004_30_01_01.fm englisch / English USA
)m~ge 2 Technical Information 12.2004
2. Carburetor with accelerator pump 2.2 Basic setting without limiter cap
2.1 Functional improvement
Carburetor 1129 120 0651 will be equipped with an
accelerator pump in future to improve acceleration H L
of the chainsaw.
162TI004 KN
For all carburetors 1129 120 0651, starting with the
adjusting screw lightly against its seat:
162TI016 KN
H = 1 turn open
L = 1 turn open
Left: Previous carburetor C1Q-S61A
Right: New carburetor C1Q-S61B
The new carburetor C1Q-S61B is distinguished
from the previous carburetor C1Q-S61A by a hole
(arrow). The part number 1129 120 0651 remains
unchanged.
TI_12_2004_30_01_01.fm Page 2 of 3
Technical Information 12.2004 Page 3
3. Summary
Item Part name Previous New Remarks
1 Tank vent 1129 350 5850 1129 350 5850 1)
2 Carburetor C1Q-S61A 1129 120 0651 1)
3 Carburetor C1Q-S61B 1129 120 0651
incl. Items 4 to 8
4 Throttle shaft with lever 1129 120 7100 1129 120 7102 2)
5 Pump piston --- 1129 121 5800
6 Sealing ring --- 1132 122 3600
7 Spring --- 1132 122 3001
8 Strainer --- 1132 121 7800
All other parts as before
Remarks
1) Only modified version of part is available from factory in future
2) New version of part can also be used for older machines
Last Technical Information on the STIHL 020 T and MS 200 T: 49.2002
© ANDREAS STIHL AG & Co. KG, 2004 Technical Documentation
D1/MTK-ru
TI_12_2004_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.