Stihl MS 391, Руководство по безопасности

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MS 311, MS 391
English
34
Install spur chain sprocket / rim
sprocket
N
Clean crankshaft stub and needle
cage and lubricate with STIHL
lubricant (special accessory)
N
Slide needle cage onto the
crankshaft stub
N
After refitting, turn the clutch drum
and/or spur chain sprocket approx.
1 full turn so that the carrier for the
oil pump drive engages
N
Refit the rim sprocket – cavities
toward the outside
N
Refit washer and E-clip on the
crankshaft
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.
N
Clean the saw chain
N
Check the saw chain for cracks and
damaged rivets.
N
Replace damaged or worn chain
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.
The chain pitch marking ( a ) is embossed
in the area of the depth gauge of each
cutter.
Use only special saw chain files!
Other files are unsuitable in terms of
shape and type of cutting.
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 Sharpening angle
B Side plate angle
Maintaining and
Sharpening the Saw Chain
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 !
Marking ( a ) Chain pitch
Inches mm
1/4 or 1 1/4 6.35
P, PM or 6 3/8 P 9.32
325 or 2 0.325 8.25
3/8 or 3 3/8 9.32
404 or 4 0.404 10.26
689BA027 KN
a
A
B
689BA021 KN