Technical Information · issue 13 of 2000
Displacement increased
Model 025 Chainsaw - Series 1123
IssueTI 13/2000
Engine family 1123
Full text
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Technical Information
13.2000
Model 025 Chainsaw - Series 1123
Displacement increased
Displacement has been increased from 44.3 cm3
(2.70 cu.in) to 45.4 cm3 (2.77 cu.in) by enlarging the
bore 0.5 mm (0.197 in). The piston, cylinder and
piston rings have been modified in this connection.
Summary
Item Part Name Previous New Remarks
1 Cylinder with piston, Ø 42 mm; 1123 020 1202 --- 1)
including items 2, 3
2 Piston, Ø 42 mm; 1123 030 2002 --- 2)
including item 3
3 Piston ring 1123 034 3003 --- 2)
4 Cylinder with piston, Ø 42.5 mm; --- 1123 020 1206
including items 5, 6
5 Piston, Ø 42.5 mm; --- 1123 030 2011
including item 6
6 Piston ring --- 1123 034 3006
7 Cylinder with piston, 42 mm dia., with 1123 020 1217 --- 1)
hole for decompression valve; including
items 2, 3
8 Cylinder with piston, 42.5 mm dia., with 1123 020 1207
hole for decompression valve; including
items 5, 6
Modification to be introduced: in progress
Remarks
1) Previous version of part no longer available from factory.
2) Previous version of part remains available for older machines.
Last Technical Information on models 021, 023, 025: 11.1999
© 2000 Andreas STIHL AG & Co. Technical Documentation
Waiblingen D1/MTK-st 6884
TI_13_2000_30_01.fm english / USA 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.