Inspection And Maintenance; Inspecting And Maintaining The Chain Saw; Inspecting And Maintaining The Chain Sprocket - Stihl MSA 120 C Instruction Manual

English
To properly clean the guide bar and chain:
► Remove the guide bar and the chain, @ 14.2.2.
1
► Clean the oil outlet duct (1), oil inlet bore (2) and groove
(3) with a brush, a slightly dampened cloth or resin
solvent, such as STIHL Resin Remover & Lubricant. Do
not use detergents.
► Clean the chain with a brush, a slightly dampened cloth or
resin solvent. Do not use detergents.
► Do not use a pressure washer to clean the guide bar or
chain or otherwise spray them with water or other liquids.

23 Inspection and Maintenance

23.1 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, @ 10.1. 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.
46
Proper maintenance of the chain saw includes the following
activities:
► Inspecting the chain sprocket periodically and having a
3
► Inspecting the guide bar for proper groove depth and
► Periodically sharpening the chain, maintaining the depth
2
3
► Having worn, missing or damaged safety labels replaced
If you make a warranty claim for a component which has not
been serviced or maintained properly, coverage may be
denied.

23.2 Inspecting and Maintaining the Chain Sprocket

► Switch off the chain saw, engage the chain brake and
► Disengage the chain brake, @ 15.2.
► Remove the chain sprocket cover, saw chain and guide
► Check the chain sprocket cover for wear marks.
► If the wear marks are deeper than a = 0.020 in. (0.5 mm),
worn chain sprocket replaced by an authorized STIHL
servicing dealer.
spread and replacing the guide bar it if it shows signs of
excessive wear or damage.
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.
by an authorized STIHL servicing dealer.
remove the battery.
bar.
a
have the chain sprocket replaced.
23 Inspection and Maintenance
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