Technical Information · issue 23 of 2003
Cylinder; Muffler; Service note; Summary
IssueTI 23/2003
Part changes (3)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 4140 020 1200 | 4140 020 1202 | To reduce pollutant emissions (unburned hydrocarbons HC and nitrous oxides NOx), the cylinder with piston 4140 020 1200 is being replaced by the new version 4140 020 1202. |
| 4140 140 0605 | 4140 140 0610 | Left: previous muffler 4140 140 0605 Right: new muffler 4140 140 0610 To reduce emissions, the muffler 4140 140 0605 is being replaced by the new version 4140 140 0610 in models FS 45, FS 46, FS 55, KM 55, FC 55 and HL 45. |
| 4140 140 6900 | 4140 140 6903 | The connector with spark arresting screen 4140 140 6900 contained in the previous muffler is replaced by the new version 4140 140 6903. |
Full text
Page 1 of 2
STIH)
Technical Information
23.2003
Brushcutters STIHL FS 45, FS 46, FS 55 – Series 4140
CombiEngine STIHL KM 55 – Series 4140
Lawn edger STIHL FC 55 – Series 4140
Hedge trimmer STIHL HS 45 – Series 4228 fo
Hedge cutter STIHL HL 45 – Series 4232
MultiEngine STIHL MM 55 – Series 4601
Drill STIHL BT 45 – Series 4314
Blowers STIHL BG 45, BG 46, BG 55, BG 65, BG 85 – Series 4229
Vacuum shredder STIHL SH 55, SH 85 – Series 4229
Contents
1. Cylinder
2. Muffler
3. Service note
4. Summary
1. Cylinder
To reduce pollutant emissions (unburned
hydrocarbons HC and nitrous oxides NOx),
the cylinder with piston 4140 020 1200 is being
replaced by the new version 4140 020 1202.
The height of the preliminary outlet at the exhaust
outlet has been reduced in the new cylinder.
Refer also to section 2.
233TI035 KN
Left: previous cylinder with piston 4140 020 1200
Right: new cylinder with piston 4140 020 1202
TI_23_2003_02_01_01.fm english / USA
)m~ge 2 Technical Information 23.2003
2. Muffler 3. Service note
(for FS 45, FS 46, FS 55, KM 55, FC 55 and HL 45) The previous cylinder with piston 4140 020 1200
and the muffler 4140 140 0605 must continue to be
used as replacements in older machines with
carburetors that have the LD adjustment screw
(B.I.S. carburetor).
In the case of machines with carburetor with H, L
and LA screw, either the previous or the new
cylinder with piston and the previous or the new
muffler can be used for replacement.
233TI037 KN
Left: previous muffler 4140 140 0605
Right: new muffler 4140 140 0610
To reduce emissions, the muffler 4140 140 0605 is
being replaced by the new version 4140 140 0610
in models FS 45, FS 46, FS 55, KM 55, FC 55 and
HL 45. The connector with spark arresting screen
4140 140 6900 contained in the previous muffler is
replaced by the new version 4140 140 6903.
The diameter of the connector has been reduced
from 8 mm to 6 mm in the new muffler.
Refer also to section 1.
4. Summary
Item Part name Previous New Remarks
1 Cylinder with piston 4140 020 1200 4140 020 1202 1)
2 Muffler, including Item 3 4140 140 0605 4140 140 0610 1) 2)
3 Connector with screen 4140 140 6900 4140 140 6903 1) 2)
Other parts as before
Remarks
1) Previous version of part remains available for older machines
2) Only for FS 45, FS 46, FS 55, KM 55, FC 55 and HL 45
Last Technical Information on STIHL FS 45, FS 46, FS 55, KM 55 and HL 45: 21.2003
Last Technical Information on STIHL FC 55: 36.2002
Last Technical Information on STIHL HS 45: 26.2001
Last Technical Information on STIHL MM 55: 56.2002
Last Technical Information on STIHL BT 45: 13.2002
Last Technical Information on STIHL BG 45, BG 55, BG 65, BG 85, SH 55, SH 85: 56.2001
© ANDREAS STIHL AG & Co. KG, 2003 Technical Documentation
D1/MTK-ja 7861
TI_23_2003_02_01_01.fm Page 2 of 2
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.