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6.3
Fitting the chain
WARNING
Wear work gloves to protect your hands from the
sharp cutters.
► Fit the chain – start at the bar nose.
3
► Fit the guide bar over the studs (1) – the cut‐
ting edges on the top of the bar must point to
the right.
► Engage the peg of the tensioner slide in the
locating hole (2) –- place the chain over
sprocket (3) at the same time.
► Turn the tensioning 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 on the nuts
only fingertight.
► Go to chapter on "Tensioning the Saw Chain"
7
Tensioning the Chain
1
58
1
1
2 4
Retensioning during cutting work:
► Shut off the engine.
► Loosen the nuts.
► Hold the bar nose up.
► Use a screwdriver to turn the tensioning
screw (1) clockwise until the chain fits snugly
against the underside of the bar.
► While still holding the bar nose up, tighten
down the nuts firmly.
► Go to "Checking Chain Tension".
A new chain has to be retensioned more often
than one that has been in use for some time.
► Check chain tension frequently – see chapter
on "Operating Instructions".
8
Checking Chain Tension
► Shut off the engine.
► Wear work gloves to protect your hands.
► The chain must fit snugly against the under‐
side of the bar and it must still be possible to
pull the chain along the bar by hand.
► If necessary, retension the chain.
A new chain has to be retensioned more often
than one that has been in use for some time.
► Check chain tension frequently – see chapter
on "Operating Instructions".
9
Fuel
The engine requires a mixture of gasoline and
engine oil.
WARNING
Avoid direct skin contact with fuel and breathing
in of gasoline fumes.
9.1
STIHL MotoMix
STIHL recommends using STIHL MotoMix. This
pre-blended fuel is free of benzene and lead, is
distinguished by a high octane rating, and
always provides the proper mixing ratio.
7 Tensioning the Chain
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