Technical Information · issue 17 of 2010
New STIHL .404" STIHL RAPID™ Micro™ Saw Chains
IssueTI 17/2010
Full text
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STIH)
Technical Information 17.2010
New STIHL .404" STIHL RAPID™ Micro™ Saw Chains – Series 3668, 3671
New half chisel saw chain
.404" STIHL RAPID™ Micro™
In the future, the previous saw chain types 3960
(46 RM) and 3883 (46 RMF – full skip) will be
replaced by the new reduced vibration saw chain
types 3668 (46 RM) and 3671 (46 RMF).
The new saw chains are characterized by low
vibration and smooth cutting behavior.
Advantages
– low vibration (approx. 30% less as compared
with the previous version)
– Very smooth running
– Reduced tendency to chatter
– High cutting performance
689TI155 KN
The new saw chains do not have a "C" in the saw
chain designation. Cutters and tie straps are not Top: Previous cutter
undercut on the rear portion of the running surface.
Bottom: New cutter with offset and forward
The updated saw chains are characterized by an
projecting depth gauge
offset and forward projecting depth gauge.
The color code of the new saw chain is yellow.
TI_17_2010_30_01_01.fm englisch / English
)m~ge 2 Technical Information 17.2010
Sharpening the saw chain Service notes
The side plate and top plate cutting angle and depth The saw chain can be serviced with the rivet
gauge setting of the new saw chains are identical spinners and chain breakers NG 4, NG 5 and NG 7.
with those of the previous saw chains. The new saw Replacing cutters
chains are serviced and sharpened exactly like the
previous versions. Repair kits "Right-hand cutter" and "Left-hand
cutter" are available for replacement. Each repair kit
Parameters
comprises five cutters and five tie straps.
Chain pitch: .404" (10.26 mm) In the future, the new repair kits will be used for the
Drive link gauge: .063" (1.6 mm) previous saw chains.
Cutter sharpening angle. 30° Newly inserted chain links must be adapted to the
Depth gauge setting: .030" (0.8 mm) dimensions of the others (sharpen cutter and depth
Side plate angle: 75° gauge down to the dimension of the master cutter;
file down the running surfaces to the dimension of
the neighboring links).
Spare parts
Item Designation Part No. Remarks
1 Cutter repair kit, r/h 3668 007 1000 1)
2 Cutter repair kit, l/h 3668 007 1001 2)
3 Tie strap with rivets 3712 660 6601
4 Tie strap without rivets 3712 662 1202
5 Drive link .404"; (1.6 mm) 3712 662 1003
Remarks
1) Comprises five right-hand cutters and five left-hand tie straps with rivets
2) Comprises five left-hand cutters and five right-hand tie straps with rivets
© ANDREAS STIHL AG & Co. KG, 2010 Technical Documentation
D1/MTK-bl
TI_17_2010_30_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.