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STIHL recommends the use of original
STIHL sprockets to ensure correct
operation of the chain brake.
Have the chain sprocket replaced by a
servicing dealer. STIHL recommends
that you have servicing and repair work
carried out exclusively by an authorized
STIHL servicing dealer.
44
Maintaining and Sharpening
the Saw Chain
Sawing effortlessly with a properly
sharpened saw chain
A properly sharpened saw chain cuts
through wood effortlessly even with very
little pushing.
Never use a dull or damaged saw chain
– this leads to increased physical strain,
increased vibration load, unsatisfactory
cutting results and increased wear.
Clean the saw chain
N
Check the saw chain for cracks and
N
damaged rivets
Replace damaged or worn chain
N
components and adapt these parts
to the remaining parts in terms of
shape and level of wear – rework
accordingly
Carbide-tipped (Duro) saw chains are
especially wear-resistant. For an optimal
sharpening result, STIHL recommends
STIHL servicing dealers.
WARNING
Compliance with the angles and
dimensions listed below is absolutely
necessary. An improperly sharpened
saw chain – especially depth gauges
that are too low – can lead to increased
kickback tendency of the chain saw –
risk of injury!
Chain pitch
The chain pitch marking (a) is embossed
in the area of the depth gauge of each
cutter.
Marking (a)
Chain pitch
Inches
7
1/4 P
1 or 1/4
1/4
6, P or PM
3/8 P
2 or 325
0.325
3 or 3/8
3/8
4 or 404
0.404
The diameter of file to be used depends
on the chain pitch – see table
"Sharpening tools".
The angles of the cutter must be
maintained during resharpening.
a
mm
6.35
6.35
9.32
8.25
9.32
10.26
MS 150 C
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