Removing The Bar And Chain; Tensioning The Saw Chain - Stihl MSA 120 C Manual De Instrucciones

7 Assembling the Saw
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3
► Fit the guide bar with tensioning gear and chain on the
saw and check the following points:
– The tensioning gear (4) faces the user.
– Chain drive links are seated in teeth of chain sprocket
(2).
– Head of screw (3) locates in slot in guide bar (6).
► Disengage the chain brake.
► Rotate the tensioning gear (4) counterclockwise until the
chain fits snugly against the bar. Make sure the drive link
tangs engage the bar groove.
The guide bar and chain are positioned against the saw.
► Fit the sprocket cover so that it is flush with the saw.
► If the sprocket cover is not flush with the saw: Turn the
adjusting wheel slightly and refit the sprocket cover.
The teeth of the adjusting wheel and tensioning gear must
mesh.
0458-716-9821-D
6
4
4
► Rotate the wingnut clockwise until the chain sprocket
cover is firmly seated.
► Fold down the grip of the wingnut.
7.1.2

Removing the Bar and Chain

► Switch off the chain saw, engage the chain brake and
remove the battery.
► Raise the grip of the wingnut.
► Rotate the wingnut counterclockwise until the chain
sprocket cover can be removed.
► Remove the sprocket cover.
► Turn the tensioning gear clockwise as far as stop.
The chain is now slack.
► Remove the bar and chain.
► Take out the screw in the tensioning gear.
► Remove the tensioning gear.
7.2

Tensioning the Saw Chain

The saw chain expands or contracts during cutting work.
Chain tension changes as a result. Check chain tension
regularly during operation and readjust if necessary.
► Switch off the chainsaw, engage the chain brake and
remove the battery.
2
1
► Raise the grip of the wingnut (1).
► Rotate the wingnut (1) two turns counterclockwise.
The wingnut (1) is loose.
► Disengage the chain brake.
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