Technical Information · issue 30 of 2008
Carburetor; Summary
IssueTI 30/2008
Part changes (2)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 4228 120 0604 | 4228 120 0606 | The previous carburetor C1Q-S70 (1) 4228 120 0604 with a smooth connector (2) on the flange (3) is replaced by new carburetor C1Q-S70A (4) 4228 120 0606 with a barbed connector (5) on the flange (6) (see Chap. |
| 4229 121 4700 | 4314 121 4700 | 3 Metering Diaphragm To ensure there are no leaks in the fuel system: The previous metering diaphragm 4229 121 4700 is replaced by new version 4314 121 4700. |
Full text
Page 1 of 4
STIH)
Technical Information 30.2008
STIHL Hedge Trimmer HS 45 – Series 4228
Contents
1. Carburetor
2. Summary
1. Carburetor
1.1 Carburetor with barbed connector 1.1.1 Supply of spare parts
The previous carburetor C1Q-S70 (1)
4228 120 0604 is no longer available. The new
3 6 carburetor C1Q-S70A (4) 4228 120 0606 can also
be used for older machines.
2 5 1.2 Flange
The previous flange (3) 4228 120 2200 with a
smooth connector (2) is replaced by the new
253TI007 KN
version (6) 4314 120 2200 with a barbed
1 4 connector (5).
Left: previous carburetor with smooth
connector on flange 1.2.1 Supply of spare parts
Right: new carburetor with barbed
The new flange (6) 4314 120 2200 can also be used
connector on flange
for older machines. The previous flange (3)
4228 120 2200 remains available for other models.
The previous carburetor C1Q-S70 (1)
4228 120 0604 with a smooth connector (2) on the
flange (3) is replaced by new carburetor
C1Q-S70A (4) 4228 120 0606 with a barbed
connector (5) on the flange (6) (see Chap. 1.2).
TI_30_2008_30_01_01.fm englisch / English
)m~ge 2 Technical Information 30.2008
1.2.2 Service notes – barbed connector 1.3 Metering Diaphragm
To ensure there are no leaks in the fuel system: The previous metering diaphragm 4229 121 4700 is
replaced by new version 4314 121 4700.
. Fuel hoses should only be disconnected and
installed by hand in order to avoid damaging the
barbed connector. Sharp-edged pliers,
screwdrivers, etc. must not be used – nor should 1.3.1 Supply of spare parts
fuel hoses be cut open with a knife or similar The new metering diaphragm 4314 121 4700 can
implement. be used for older machines. The previous metering
. Fuel hoses must not be reused after being diaphragm 4229 121 4700 remains available for
disconnected. They must always be replaced by other models.
new hoses. Fuel hoses may become over-
extended during removal.
. New fuel hoses must be installed in a dry 1.4 Set of carburetor parts
condition or with the aid of Press Fluid The previous "set of carburetor parts"
OH 723 – 0781 957 9000. 4229 007 1060 is replaced by new version
. When using Press Fluid OH 723, coat the ends 4228 007 1051. The difference between the new
of hoses and connectors with Press Fluid "set of carburetor parts" and the previous version is
OH 723 prior to installing the new hoses onto the new metering diaphragm 4314 121 4700 (see
the barbed connectors. Chap. 1.3).
Notes regarding Press Fluid OH 723
1.4.1 Supply of spare parts
Press Fluid OH 723 provides a lubricant film to aid The new "set of carburetor parts" 4228 007 1051
in assembly. The lubricant evaporates after a short can also be used for older machines. The previous
time allowing for a snug fit. "set of carburetor parts" 4229 007 1060 remains
Never use fuel, oil or grease as a lubricant. Fuel, oil available for other models.
and grease does not evaporate and may allow the
hose to slip from the connector.
TI_30_2008_30_01_01.fm Page 2 of 4
Technical Information 30.2008 Page 3
1.5 Pump piston kit
4 1
3
253TI008 KN
The new "pump piston kit" 4314 007 1053 is
available as a replacement kit for previous
carburetor C1Q-S70 – 4228 120 0604 and new
carburetor C1Q-S70A – 4228 120 0606. The new
"pump piston kit" contains new versions of the pump
piston (1), sealing ring (2), spring (3) and previous
version of the strainer (4).
1.5.1 Spare parts/service note
The new "pump piston kit" 4314 007 1053 is only
offered complete. The individual parts of the new
"pump piston kit" are not available separately.
The new "pump piston kit" 4314 007 1053 can also
be used for older machines – always replace
previous and new versions of the pump piston,
sealing ring, strainer and spring with "pump piston
kit" 4314 007 1053.
The previous versions of pump piston
4229 121 5800, sealing ring 4140 122 3600, spring
4229 122 3001 and strainer 1120 121 7801 remain
available for other models.
TI_30_2008_30_01_01.fm
)m~ge 4 Technical Information 30.2008
2. Summary
Item Part Name Previous New Rem.
1 Carburetor C1Q-S70; 4228 120 0604 --- 1)
including items 3, 4, 6, 7, 8, 9
2 Carburetor C1Q-S70A; --- 4228 120 0606 2) 4)
including items 3, 4, 6, 7, 8, 9
3 Flange 4228 120 2200 4314 120 2200 2) 3) 4)
4 Metering diaphragm 4229 121 4700 4314 121 4700 2) 3)
5 Set of carburetor parts; 4229 007 1060 4228 007 1051 2) 3)
including item 4
6 Pump piston 4229 121 5800 -*- 3) 4) 5)
7 Sealing ring 4140 122 3600 -*- 3) 4) 5)
8 Spring 4229 122 3001 -*- 3) 4) 5)
9 Strainer 1120 121 7801 -*- 3) 4) 5)
10 Pump piston kit; --- 4314 007 1053 2) 4)
including items 6, 7, 8, 9
Modification to be introduced : continuously
Remarks
1) Previous version of part no longer available from factory
2) New version of part can also be used for older machines
3) Previous version of part remains available for other models
4) see “Service Notes”
5) Replace previous and new version of part with Item 10
© ANDREAS STIHL AG & Co. KG 2008 Technical Documentation
D1/MTK-fr
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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.