Stihl MS 250 Notice D'emploi page 21

Disengaging the chain brake.
Pull the hand guarad towards the
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front handle until there is an audible
click – the chain brake is
disengaged.
Fitting the chain
WARNING
Wear work gloves to protect your hands
from the sharp cutters.
Fit the chain – start at the bar nose.
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MS 250
1
3
1
2 4
Fit the guide bar over the studs (1) –
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the cutting edges on the top of the
bar must point to the right.
Engage the peg of the tensioner
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slide in the locating hole (2) –- place
the chain over sprocket (3) at the
same time.
Turn the tensioning
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screw (4)clockwise until there is
very little chain sag on the
underside of the bar – and the drive
link tangs are engaged in the bar
groove.
Refit the sprocket cover and screw
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on the nuts only fingertight.
Go to chapter on "Tensioning the
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Saw Chain"
Tensioning the Chain
1
Retensioning during cutting work:
Shut off the engine.
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Loosen the nuts.
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Hold the bar nose up.
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Use a screwdriver to turn the
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tensioning screw (1) clockwise until
the chain fits snugly against the
underside of the bar.
While still holding the bar nose up,
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tighten down the nuts firmly.
Go to "Checking Chain Tension".
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A new chain has to be retensioned more
often than one that has been in use for
some time.
Check chain tension frequently –
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see chapter on "Operating
Instructions".
English
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