Checking And Replacing The Chain Sprocket; Maintaining And Sharpening The Saw Chain - Stihl MSE 250 C Instruction Manual

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Checking and Replacing the
Chain Sprocket
Disconnect the plug from the wall
N
outlet.
Remove the chain sprocket cover,
N
chain and guide bar.
Replacing the Chain Sprocket
a
1 Chain sprocket (7 teeth)
replace after using two saw chains
–
or sooner
if the wear marks (a) on the
–
sprocket are deeper than 0.5 mm –
the life of the chain would otherwise
be reduced. Use reference gauge
(special accessory) to check the
depth of the wear marks.
It is best to use two saw chains in
rotation with one sprocket.
STIHL recommends the use of original
STIHL sprockets to ensure correct
operation of the chain brake.
28
3
2
1
Ease the E-clip (1) off the shaft.
N
Remove and inspect the washer (2)
N
– replace it if it shows signs of wear.
Remove the chain sprocket (3).
N
Install the new chain sprocket in the
N
reverse sequence.
Maintaining and Sharpening
the Saw Chain
Cutting effortlessly with a correctly
sharpened chain
A properly sharpened chain slices
through wood effortlessly and requires
very little feed pressure.
Do not work with a dull or damaged
chain as it will increase the physical
effort required, produce unsatisfactory
results and a higher rate of wear.
Clean the chain.
N
Check the chain for cracks in the
N
links and damaged rivets.
Replace any damaged or worn
N
parts of the chain and match the
new parts to the shape and size of
the original parts.
Carbide-tipped saw chains (Duro) are
particularly wear resistant. STIHL
recommends you have your chain
resharpened by a STIHL servicing
dealer.
WARNING
It is absolutely essential to comply with
the angles and dimensions specified
below. If the saw chain is incorrectly
sharpened – and in particular if the depth
gauge is set too low – there is a risk of
increased kickback of the saw, with
resulting risk of injury.
MSE 250 C