Sharpening and side plate angles
A
B | KN |
689BA021 | |
|
ASharpening angle
STIHL saw chains are sharpened with a 30° sharpening angle. Ripping chains, which are sharpened with a 10° sharpening angle, are exceptions. Ripping chains have an X in the designation.
BSide plate angle
The correct side plate angle results automatically when the specified file holder and file diameter are used.
Tooth shapes | Angle (°) | |
| A | B |
Micro = | 30 | 75 |
e. g., 63 PM3, 26 RM3, |
|
|
36 RM |
|
|
Super = full chisel tooth, | 30 | 60 |
e. g., 63 PS3, 26 RS, |
|
|
36 RS3 |
|
|
Ripping chain, e. g., | 10 | 75 |
63 PMX, 36 RMX |
|
|
The angles must be identical for all cutters in the saw chain. Varying angles: Rough, uneven running of the saw chain, increased wear – even to the point of saw chain breakage.
File holder
689BA025 KN
NUse a file holder
Always use a file holder (special accessory, see table "Sharpening tools") when sharpening saw chains by hand. File holders have markings for the sharpening angle.
Use only special saw chain files! Other files are unsuitable in terms of shape and type of cutting.
To check the angles
001BA203 KN |
STIHL filing gauge (special accessory, see table "Sharpening tools") – a universal tool for checking sharpening and side plate angles, depth gauge setting, and tooth length, as well as cleaning grooves and oil inlet holes.
English
Proper sharpening
NSelect sharpening tools in accordance with chain pitch
NClamp guide bar if necessary
NBlock saw chain – push the hand guard forward
NTo advance the saw chain, pull the hand guard toward the handlebar: The chain brake is disengaged.
With the Quickstop Plus chain brake system, additionally press the throttle trigger lockout
NSharpen frequently, removing little material – two or three strokes of the file are usually sufficient for simple resharpening
90° KN 689BA018
689BA043 KN
NGuide the file: horizontally (at a right angle to the side surface of the guide bar) in accordance with the specified angle – according to the
MS 250 | 47 |
