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MS 240
English
35
N
Use a screwdriver to remove the E-
clip (1)
N
Remove the washer (2)
N
Remove rim sprocket (3)
N
Inspect transport profile on the
clutch drum (4) – if there are also
heavy signs of wear, also replace
the clutch drum
N
Remove clutch drum or spur chain
sprocket (5) including needle
cage (6) from the crankshaft – with
QuickStop Super chain brake, press
throttle trigger lockout beforehand
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 – with
QuickStop Super chain brake, press
throttle trigger lockout beforehand
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.
001BA122 KN
1
2
4
5
6
1
2
3
6
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
!
Summary of Contents for MS 240
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