MAINTENANCE
28 – English
1154886-49 Rev.4 2013-06-20
Tensioning the recoil spring
•
Hook the starter cord in the notch in the pulley and
turn the starter pulley about 2 turns clockwise.
Note! Check that the pulley can be turned an
additional 1/2 turn when the starter cord is pulled all
the way out.
(98)
Stretch the line with the handle. Move your thumb and
release the line. See the
fi
gure below.
(99)
Replacing the return and drive springs
Recoil spring (A)
•
Lift up the starter pulley. See instructions under the
heading Changing a broken or worn starter cord.
Remember that the recoil spring is coiled under
tension in the starter housing.
•
Remove the cassette with the recoil spring from the
starter.
•
Lubricate the recoil spring with light oil. Fit the
cassette with recoil spring in the starter. Fit the starter
pulley and tension the recoil spring.
Drive disc spring (B)
•
Undo the bolt in the centre of the pulley and remove
the drive disc and the drive disc spring.
•
Replace the drive disc spring and
fi
t the drive disc
above the spring.
(100)
Fitting the starter
•
To
fi
t the starter,
fi
rst pull out the starter cord and place
the starter in position against the crankcase. Then
slowly release the starter cord so that the pulley
engages with the pawls.
•
Fit and tighten the screws that hold the starter.
Air
fi
lter
The air
fi
lter must be regularly cleaned to remove dust and
dirt in order to avoid:
•
Carburettor malfunctions
•
Starting problems
•
Loss of engine power
•
Unnecessary wear to engine parts
•
Excessive fuel consumption.
•
Remove the air
fi
lter after taking off the air
fi
lter cover.
When re
fi
tting make sure that the air
fi
lter seals tightly
against the
fi
lter holder. Clean the
fi
lter by brushing or
shaking it.
(101)
The
fi
lter can be cleaned more thoroughly by washing it in
water and detergent.
An air
fi
lter that has been in use for a long time cannot be
cleaned completely. The
fi
lter must therefore be replaced
with a new one at regular intervals.
A damaged air
fi
lter
must always be replaced.
A HUSQVARNA chain saw can be equipped with different
types of air
fi
lters according to working conditions,
weather, season, etc. Contact your dealer for advice.
Spark plug
The spark plug condition is in
fl
uenced by:
•
Incorrect carburetor adjustment.
•
An incorrect fuel mixture (too much or incorrect type of
oil).
•
A dirty air
fi
lter.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
starting dif
fi
culties.
If the machine is low on power, dif
fi
cult to start or runs
poorly at idle speed: always check the spark plug
fi
rst
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0.020 inch (0,5
mm). The spark plug should be replaced after about a
month in operation or earlier if necessary.
(102)
Note! Always use the recommended spark plug type! Use
of the wrong spark plug can damage the piston/cylinder.
Check that the spark plug is
fi
tted with a suppressor.
Lubricating the bar tip sprocket
Lubricate the bar tip sprocket each time you refuel. Use
the special grease gun and a good quality bearing grease.
(103)
Needle bearing lubrication
The clutch drum has a needle bearing on the output shaft.
This needle bearing must be lubricated regularly.
When lubricating, remove the clutch cover by loosening
the two bar nuts. Lay the saw on its side with the clutch
drum upwards.
Lubrication involves engine oil dripping into the centre of
the clutch drum as it rotates.
(104)
