Technical Information · issue 12 of 1999
024; 026: 026 annular buffers; Oil pump; Fuel pick
Model 024, 026 Chainsaws - Series 1121
IssueTI 12/1999
Engine family 1121
Part changes (1)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 1119 890 3405 | 1129 890 3401 | Tool kit (combination wrench) In order to further standardize parts the combination wrench 1119 890 3405 in tool kit 1121 890 1400 will be replaced by combination wrench 1129 890 3401. |
Full text
Page 1 of 3
Technical Information
12.1999
Model 024, 026 Chainsaws - Series 1121
Contents
1. Oil pump
2. Fuel pickup hose
3. Chain brake spring (hose)
4. Tool kit (combination wrench)
1. Oil pump
024 (delivery rate, different material) 026 (different material)
024 026
133TI040 KN
133TI041 KN
1121 640 3210 1121 640 3201 1121 640 3210 1121 640 3202
Left: Previous oil pump 65 (die casting) Left: Previous oil pump 65 (die casting)
Right: New oil pump 5 (black plastic) Right: New oil pump 65 (off-white plastic)
Oil pump 65 (0.65 mm stroke) will be replaced by Applies only to 026 with non-adjustable oil pump
the new oil pump 1121 640 3201 with an 0.5 mm Oil pump 1121 640 3210 (with magnesium die cast
stroke. The previous replacement oil pump body) will be replaced in the foreseeable future by
1121 640 3210 (with magnesium die cast body) will oil pump 1121 640 3202 (with off-white plastic
be supplied from the factory only as long as existing body).
stocks last.
The delivery rate of the new oil pump remains
The body of the new oil pump will be made of black unchanged (0.65 mm stroke).
plastic so that it can be easily distinguished from the
previous production line oil pump (made of off-white
plastic).
TI_12_1999_30_01.fm englisch / english / USA
)m~ge 2 Technical Information 12.1999
Summary
Item Part Name Previous New Bem.
024
1 Oil pump 65 (die casting) 1121 640 3210 --- 1)
2 Oil pump 5 (black plastic) --- 1121 640 3201
026
3 Oil pump 65 (die casting) 1121 640 3210 --- 1)
4 Oil pump 65 (off-white plastic) --- 1121 640 3202
Modification to be introduced on 026: in progress
Remarks
1) Previous version of part will be supplied from factory only as long as existing stocks last
2. Fuel pickup hose
133TI042 KN
1129 358 7700 1121 358 7700
Left: Previous pickup hose
Right: New pickup hose
The previous pickup hose 1129 358 7700 will no
longer be used on the 024 and 026. Instead a new
version 1121 358 7700 will be used on these
models.
Summary
Item Part Name Previous New Rem.
1 Pickup hose 1129 358 7700 1121 358 7700 1)
Remarks
1) Previous version of part will be supplied from factory only as long as existing stocks last
TI_12_1999_30_01.fm Page 2 of 3
Technical Information 12.1999 Page 3
3. Chain brake spring (hose)
The chain brake spring will be installed with a
modified hose from the serial numbers shown in the
summary. The previous hose 1125 162 8001
(1.5 mm thick, transparent) has been deleted and
replaced by hose 1121 162 8000 (1 mm thick,
black). The part number of the brake spring (with
hose) has changed from 1121 160 5500 to
1121 160 5501.
133TI043 KN
1121 160 5500 1121 160 5501
Summary
Item Part Name Previous New Rem.
1 Brake spring; including: 1121 160 5500 1121 160 5501 1)
2 Hose 12x1.5x20 mm (transparent) 1125 162 8001 --- 1)
3 Hose 12x1x20 mm (black) --- 1121 162 8000
Modification to be introduced from serial number 2 41 809 371 (US production)
Remarks
1) Previous version of part remains available for other models
4. Tool kit (combination wrench)
In order to further standardize parts the combination
wrench 1119 890 3405 in tool kit 1121 890 1400 will
be replaced by combination wrench 1129 890 3401.
Note
This change applies only to machines whose serial
numbers begin with the digit 1.
Summary
Item Part Name Previous New Bem.
Tool kit; including: 1121 890 1400 1121 890 1400
Combination wrench 1119 890 3405 1129 890 3401 1)
Modification to be introduced: in progress
Remarks
1) Previous version of part remains available for other models
Last Technical Information on models 024, 026: 39.98
© 1999 Andreas STIHL AG & Co. Technical Documentation
Waiblingen D1/MTK-sc 6572
TI_12_1999_30_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.