Safe Condition - Stihl MSA 120 C Instruction Manual

4 Safety Precautions
4.6

Safe Condition

4.6.1 Chain Saw
The chain saw is in a safe condition if the following points
are observed:
– The saw is not damaged.
– The saw is clean and dry.
– Chain brake is operating properly.
– The controls function properly and have not been
modified.
– Chain lubrication is operating properly.
– Wear marks on chain sprocket are not deeper than 0.5
mm.
– A combination of guide bar and saw chain recommended
in this instruction manual is mounted.
– The guide bar and chain are properly mounted.
– The chain is properly tensioned.
– Only original STIHL accessories designed for this saw are
fitted.
– Accessories are properly mounted.
WARNING
￭ If the product does not comply with safety requirements,
components will no longer function properly or safety
devices may be rendered inoperative. This can result in
serious or fatal injuries.
► Work only with an undamaged chain saw.
► If the saw is dirty or wet: Clean the saw and allow it to
dry.
► Never modify your chain saw. Exception: Mounting a
combination of guide bar and saw chain recommended
in this instruction manual.
► If the controls do not function properly: Do not use your
saw.
► Only fit original STIHL accessories designed for this
saw model.
0458-716-9621-B
► Mount the guide bar and chain as described in the
instruction manual.
► Mount accessories as described in the instruction
manual.
► Never insert objects in the saw's openings.
4.6.2 Guide Bar
The guide bar is in a safe condition if the following points are
observed:
– Guide bar is not damaged.
– Guide bar is not deformed.
– The minimum groove depth is maintained, @ 19.3.
– Bar rails are free from burrs.
– Bar groove is not pinched or splayed.
WARNING
￭ If the guide bar is not in a safe condition, it can no longer
support and guide the saw chain properly. The rotating
saw chain can jump off the guide bar. This can result in
serious or fatal injuries.
► Work only with an undamaged guide bar.
► If the groove depth is less than the minimum depth:
Mount a new guide bar.
► Deburr the guide bar after finishing work.
► If you have any queries: Contact your STIHL servicing
dealer.
4.6.3 Saw Chain
The saw chain is in a safe condition if the following points
are observed:
– Chain is not damaged.
– Chain is properly sharpened.
– The setting of the depth gauges is within the service
marks.
– The length of the cutters is within the service marks.
English
55