Inspection And Maintenance; Inspecting And Maintaining The Chain Saw; Inspecting And Maintaining The Chain Sprocket; Inspecting And Maintaining The Guide Bar - Stihl MSA 220 C Instruction Manual

24 Inspection and Maintenance

24 Inspection and Maintenance

24.1 Inspecting and Maintaining the Chain Saw

WARNING
To reduce the risk of personal injury from unintended
activation, remove the battery before inspecting the chain
saw or carrying out any maintenance, @ 10. Carry out only
the maintenance operations described in this manual. There
are no user-authorized repairs. STIHL recommends that
repair work be performed by authorized STIHL servicing
dealers.
Proper maintenance of the chain saw includes the following
activities:
► Inspecting the chain sprocket periodically and having a
worn chain sprocket replaced by an authorized STIHL
servicing dealer.
► Inspecting the guide bar for proper groove depth and
spread and replacing the guide bar it if it shows signs of
excessive wear or damage.
► Periodically sharpening the chain, maintaining the depth
limiting guides at the appropriate height and replacing the
saw chain when indicated by the relevant wear marks or
when the chain is damaged or shows signs of excessive
wear.
► Having worn, missing or damaged safety labels replaced
by an authorized STIHL servicing dealer.
If you make a warranty claim for a component which has not
been serviced or maintained properly, coverage may be
denied.

24.2 Inspecting and Maintaining the Chain Sprocket

► Switch off the chain saw, engage the chain brake and
remove the battery.
► Disengage the chain brake, @ 16.2.
► Remove the chain sprocket cover, saw chain and guide
bar.
0458-795-8621-B
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► Check the chain sprocket cover for wear marks.
► If the wear marks are deeper than a = 0.020 in. (0.5 mm),
have the chain sprocket replaced.
STIHL recommends using genuine STIHL chain sprockets to
ensure optimal functioning of the chain brake.
Alternating between two chains helps reduce wear to the
chain sprocket.

24.3 Inspecting and Maintaining the Guide Bar

► Switch off the chain saw, engage the chain brake and
remove the battery.
► Remove the guide bar and saw chain, @ 15.2.2.
► Measure the depth of the guide bar groove in the area with
the greatest wear using the measuring tool on the file
gauge (special accessory, not included).
English
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