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MAINTENANCE
34 – English
Some mufflers are equipped with a special spark arrestor
screen. If your machine has this type of muffler, you
should clean the screen at least once a week. This is best
done with a wire brush. A blocked screen will cause the
engine to overheat and may lead to serious damage.
Note! The screen must be replaced if it is damaged. If the
screen is b
locked the machine will overheat and this will
cause damage to the cylinder and piston. Never use a
machine with a muffler that is in poor condition.
Never
use a muffler if the spark arrestor screen is missing
or defective.
The muffler is designed to reduce the noise level and to
direct the exhaust gases away from the operator. The
exhaust gases are hot and can contain sparks, which may
cause fire if directed against dry and combustible
material.
A muffler equipped with a catalytic converter significantly
reduces the amount of h
ydrocarbons (HC), nitrogen
oxides (NO) and aldehydes in the exhaust fumes. Carbon
monoxide (CO), which is poisonous and odorless, is not
however reduced! Consequently, never work in an
enclosed or badly ventilated area. Good air circulation
should always prevail when working in snowy hollows,
ravines or in confined conditions.
Starter
Changing a broken or worn starter cord
• Loosen the screws that hold the starter against the
crankcase and remove the starter.
• Pull out the cord approx. 30 cm (12 inches) and hook
it into the notch in the r
im of the pulley. Release the
recoil spring by letting the pulley rotate slowly
backwards.
• Undo the screw in the centre of the pulley and remove
the pulle
y. Insert and fasten a new starter cord to the
pulley. Wind approx. 3 turns of the starter cord onto
the pulley. Connect the pulley to the recoil spring so
that the end of the spring engages in the pulley. Fit the
screw in the center of the pulley. Insert the starter cord
through the hole in the starter housing and the starter
handle. Make a secure knot in the end of the starter
cord.
Tensioning the recoil spring
• Hook the starter cord in the notch in the pulley and
turn the starter pulley about 2 turns clockwise.
!
WARNING! When the recoil spring is
wound up in the starter housing it is
under tension and can, if handled
carelessly, pop out and cause personal
injury.
Care must be exercised when replacing
the return spring, starter cord or the
drive disc spring. Wear protective
glasses and protective gloves.