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
markings on the file holder – rest the file holder on the tooth head and the depth gauge
NFile only from the inside outward
NThe file only sharpens on the forward stroke – lift the file on the backstroke
NDo not file tie straps and drive links
NRotate the file a little periodically in order to avoid uneven wear
NTo remove file burr, use a piece of hardwood
NCheck angle with file gauge All cutters must be equally long.
With varying cutter lengths, the cutter heights also vary and cause rough running of the saw chain and chain breakage.
NAll cutters must be filed down equal to the length of the shortest cutter – ideally, one should have this done by a servicing dealer using an electric sharpener
Depth gauge setting
a |
689BA023 KN |
The depth gauge determines the depth to which the cutter penetrates the wood and thus the chip thickness.
English
aRequired distance between depth gauge and cutting edge
When cutting softwood outside of the frost season, the distance can be increased by up to 0.2 mm (0.008").
Chain pitch | Depth gauge |
Distance (a)
Inches (mm) mm (Inches)
1/4 P | (6.35) | 0.45 | (0.018) |
1/4 | (6.35) | 0.65 | (0.026) |
3/8 P | (9.32) | 0.65 | (0.026) |
0.325 | (8.25) | 0.65 | (0.026) |
3/8 | (9.32) | 0.65 | (0.026) |
0.404 | (10.26) | 0.80 | (0.031) |
Lowering the depth gauges
The depth gauge setting is lowered when the cutter is sharpened.
NCheck the depth gauge setting after each sharpening
1 | 2 |
KN | |
| 689BA061 |
NLay the appropriate file gauge (1) for the chain pitch on the saw chain and press it against the cutter to be checked – if the depth gauge protrudes past the file gauge, the depth gauge must be reworked
MS 660 | 47 |
