Technical Information · issue 12 of 1994
Chain sprocket cover/side plate
Part changes (1)
| Was | Becomes | What the bulletin says |
|---|---|---|
| 1128 664 1001 | 1128 664 1002 | The original side plates 1128 664 1001 and 1122 664 1000 will be replaced by the versions 1128 664 1002 and 1122 664 1001. |
Full text
Page 1 of 4
Technical Information
12.94
Engineering Changes on STIHL Chain Saws 024 - Series 1121
026 - Series 1121
034 - Series 1125
036 - Series 1125
044 - Series 1128
064 - Series 1122
066 - Series 1122
Chain sprocket cover/side plate
In future, a newly developed side plate will be Service note
installed in chain saw models 024, 026, 034, 036,
044, 064 and 066. This new version of the side
In the event of a repair and installation of a new
plate greatly simplifies assembly of the guide bar. side plate, note that the new version of the chain
sprocket cover must be fitted as well.
The new side plate is held on the bar studs by
sprung tabs. These new retaining tabs on the side The new versions of the chain sprocket covers can
plate hold the guide bar in position until the chain be identified by their integrally cast part numbers
sprocket cover is fitted. 1122 648 0401 and 1125 648 0404.
Benefits
• being
Guide bar is held in position while saw chain is
fitted
• saw chainand faster assembly of guide bar and
Simpler
The original side plates 1128 664 1001 and
1122 664 1000 will be replaced by the versions
1128 664 1002 and 1122 664 1001.
In this connection the chain sprocket covers have
undergone minor modification to accommodate
the new side plates. The part numbers of the chain
sprocket covers have been changed.
The original versions of the side plates will remain
available for the original chain sprocket covers. Page 2 of 4
Technical Information 12.94 - Page 2
Assembly instructions
• crankcase
Release M4 x 8 pan head screw from
• Remove side plate and pan head screw
• against
Push new side plate over the bar studs and
the crankcase
• and
Place combination wrench over the bar studs
use a plastic mallet to drive the side plate
against the crankcase with one short, hard blow
Important:
After fitting a new side plate for the first time, mount the guide bar and chain sprocket cover and then tighten
down the M8 nuts to a torque load of about 15 to 20 Nm (11 to 15 lbf.ft).
... Page 3 of 4
Technical Information 12.94 - Page 3
Disassembly instructions
• Fit M8 nut on rear bar stud
• under
Slip screwdriver end of combination wrench
the side plate -
twist the combination wrench about 45°
counterclockwise
• 15
Lift end of combination wrench about 10 -
mm (1/2 in) until the side plate comes away
from the bar studs
• remove
Unscrew the M8 nut -
the side plate
... Page 4 of 4
Technical Information 12.94 - Page 4
Summary
Part Name Original New Key Rem. MOQ
version version H
Chain sprocket cover
(044, 066 wrap-around handle only) 1122 640 1700 1122 640 1701 1 1) 1
Chain sprocket cover
(024, 026, 034, 036, 044, 064, 066 1125 640 1700 1125 640 1701 1 1) 1
Side plate
(024, 026, 034, 036) 1122 664 1000 1122 664 1001 2 2) 1
Side plate
(044, 064, 066) 1128 664 1001 1128 664 1002 2 2) 1
Pan head screw M4 x 8 9041 216 0630 --- 3 3)
Modification to be introduced: in progress
Remarks
1) Original version of part will be supplief only as long as existing stocks last
2) Original version of part remains available as spare for older machines
3) Part remains available as spare for other models
Technical Information bulletin 11.94 refers to specific markets only and has not been distributed to all
countries.
Last Technical Information on models: 024, 026: 22.93
034, 036: 29.92
044: 54.92
064, 066: 08.94
Waiblingen, May 17, 1994 Andreas Stihl
D1/MTK-al Technical Documentation
... 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.