Technical Information · issue 18 of 2008
Carburetor; Chuck kit; Summary
IssueTI 18/2008
Part changes (2)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 4314 120 0600 | 4314 120 0601 | The previous carburetor C1Q-S74B (1) 4314 120 0600 with smooth connectors (2, 3) at the flange (4) and carburetor housing is being replaced by the new carburetor C1Q-S74D (5) 4314 120 0601 with barbed connectors (6, 7) at the flange (8) (see Chapter 1. |
| 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 the new version 4314 121 4700. |
Full text
Page 1 of 4
STIH)
Technical Information 18.2008
Drill STIHL BT 45 – Series 4314
Contents
1. Carburetor
2. Chuck kit
3. Summary
1. Carburetor
1.1 Carburetor with barbed connectors 1.1.1 Supply of spare parts
The previous carburetor C1Q-S74B (1)
4314 120 0600 is no longer available. The new
4 8 carburetor C1Q-S74D (5) 4314 120 0601 can also
be used for older machines.
3 7 1.2 Flange
The previous flange (4) 4228 120 2200 with a
2 6 smooth connector (3) is replaced by the new version
421TI010 KN
(8) 4314 120 2200 with a barbed connector (7).
1 5
Left: Previous carburetor with smooth 1.2.1 Supply of spare parts
connectors
The new flange (8) 4314 120 2200 can also be used
Right: New carburetor with barbed
for older machines. The previous flange (4)
connectors
4228 120 2200 remains available for other models.
The previous carburetor C1Q-S74B (1)
4314 120 0600 with smooth connectors (2, 3) at the
flange (4) and carburetor housing is being replaced
by the new carburetor C1Q-S74D (5)
4314 120 0601 with barbed
connectors (6, 7) at the flange (8) (see Chapter 1.2)
and carburetor housing.
TI_18_2008_30_01_01.fm englisch / English USA
)m~ge 2 Technical Information 18.2008
1.2.2 Service notes – barbed connectors 1.3 Metering diaphragm
To ensure there are no leaks in the fuel system: The previous metering diaphragm 4229 121 4700 is
replaced by the new version 4314 121 4700.
. Install and remove fuel hoses, by hand
whenever possible, in order to avoid damage to
the barbed connector – sharp-edged pliers,
screwdrivers, etc., must not be used – nor 1.3.1 Supply of spare parts
should fuel hoses be cut open with a knife or The new metering diaphragm 4314 121 4700 can
similar implement be used for older machines. The previous metering
. Do not reuse fuel hoses after disassembly, diaphragm 4229 121 4700 remains available for
always replace them with new hoses – fuel other models.
hoses may be over-extended when removed
. Install new fuel hoses dry or with the aid press
fluid OH 723 – 0781 957 9000. Other press 1.4 Set of carburetor parts
fluids are not permitted and may lead to fuel The previous "set of carburetor parts"
hose damage 4314 007 1051 is replaced by the new version
. When using press fluid OH 723, apply press 4314 007 1052. The difference between the new
fluid to the ends of the hose and connectors "set of carburetor parts" and the previous version is
prior to installation the new metering diaphragm 4314 121 4700 (see
Chap. 1.3).
Notes regarding press fluid OH 723
Press fluid OH 723 produces a lubricant film to aid 1.4.1 Supply of spare parts
in assembly. The lubricant evaporates after a short The previous "set of carburetor parts"
time allowing for a tight fit. 4314 007 1051 is no longer available. The new "set
Never use fuel, oil or grease as a lubricant. Fuel, oil of carburetor parts" 4314 007 1052 can also be
and grease does not evaporate and may allow the used for older machines.
hose to slip from the connector.
TI_18_2008_30_01_01.fm Page 2 of 4
Technical Information 18.2008 Page 3
1.5 Pump piston kit 2. Chuck kit
2.1 Washer, screw
2
3
1 4
4 1
3 5
253TI008 KN
2
A new "pump piston kit" 4314 007 1053 is now
421TI011 KN
available for the previous carburetor C1Q-S74B –
4314 120 0600 and new carburetor
C1Q-S74D – 4314 120 0601. The new "pump
piston kit" contains new versions of the pump piston To improve contact between the chuck (1, 2) and
(1), sealing ring (2), spring (3) and previous version shaft (3), washer (4) 0000 958 6511 is being added
of the strainer (4). to previous versions of "chuck kit“ 4314 007 1000
and 4314 007 1004. Because of the introduction of
the new washer (4), the previous screw
M6LHx25-12.9 (9061 373 1350) is being replaced
1.5.1 Spare parts/service note by screw (5) M6LHx28-12.9 (9061 373 1352). The
The new "pump piston kit" 4314 007 1053 is only new screw (5) is 3 mm longer than the previous
offered complete. The individual parts of the new version. The part numbers for "chuck kit"
"pump piston kit" are not available separately. 4314 007 1000 and 4314 007 1004 will remain the
same.
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, spring and strainer with the "pump 2.1.1 Spare parts/service note
piston kit" 4314 007 1053. The previous screw M6LHx25-12.9
The previous versions of the pump piston (9061 373 1350) is no longer available.
4229 121 5800, sealing ring 4140 122 3600, spring The new screw (5) M6LHx28-12.9 (9061 373 1352)
4229 122 3001 and strainer 1120 121 7801 remain can be used for older machines.
available for other models.
The new washer (4) 0000 958 6511 may only be
used in conjunction with the new screw (5)
M6LHx28-12.9 (9061 373 1352).
TI_18_2008_30_01_01.fm
)m~ge 4 Technical Information 18.2008
3. Summary
Item Part Name Previous New Rem.
1 Carburetor C1Q-S74B; 4314 120 0600 --- 1)
including Items 3, 4, 6, 7, 8, 9;
other parts as previously, see spare parts list
2 Carburetor C1Q-S74D; --- 4314 120 0601 2) 4)
including Items 3, 4, 6, 7, 8, 9;
other parts as previously, see spare parts list
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; 4314 007 1051 4314 007 1052 1) 2)
including Item 4;
other parts as previously, see spare parts list
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
11 Chuck kit; 4314 007 1000 --- 1) 4)
including Item 15
12 Chuck kit; --- 4314 007 1000 2) 4)
including Items 16, 17
13 Chuck kit; 4314 007 1004 --- 1) 4)
including Item 15
14 Chuck kit; --- 4314 007 1004 2) 4)
including Items 16, 17
15 Screw ISO7046-M6LHx25-12.9 9061 373 1350 --- 1) 4)
16 Screw ISO7046-M6LHx28-12.9 --- 9061 373 1352 2) 4)
17 Washer --- 0000 958 6511 4) 6)
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
6) New version of part may only be used in conjunction with Item 16
© 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.