Table of Contents
Advertisement
MAINTENANCE
Muffler
NOTE!
Some mufflers are fitted with a catalytic converter. See
"Technicaldata"to
see whether you clearing saw is fitted with a
catalytic convelter.
The muffler is designed to
dampen
the noise level and
to direct the exhaust fumes
away from the user. The
exhaust fumes are hot and
can contain sparks, which
can re.sult in fire if the
exhaust fumes are directed
towards a dry and
inflammable
material
Some
mufflers are equipped
with a
special spark arrest screerL If
your machine
is fitted with
this type of screen it should
be cleaned regularly. This is
done using a wire brush. On
mufflers without
a catalytic
converter
the screen should
be cleaned weekly, or
replaced if necessary. On
mufflers fitted with a
catalytic converter the screen
should be checked and
cleaned monthly. If the
screen is damaged
it should
be replaced. If the screen is
frequently
blocked, this can
be a sign that the function
of
the catalytic converter
is
impaired.
Contact your
dealer to inspect the muffler.
A
blocked screen will cause
the engine to overheat
re.sulting in damage to the
cylinder and pistorL Also see
under
"A_aintenan_'_
NOTE!
Never use a machine with a
defective muffler.
Cooling system
To maintain
as low opera-
ting temperature
as possible
the engine is equipped
with
a cooling system.
The cooling system consists
of:
1. An air intake on the
starter unit.
2. Cooling fins on the
flywheel.
3. Cooling fins on the
cylinder
4. Cylinder cover (leads
cold air onto the cylin-
der).
Clean the cooling system
using a brush at least once a
week, in difficult conditions
more often.
1 2
A
dirty
or blocked
cooling
system
leads to the engine
overheating
resulting
in damage
to the cylinder
and piston.
Spark plug
The condition
of the spark plug is affected by:
• An incorrect
carburetor
setting.
• An incorrect
fuel mixture (too much or faulty oil).
• A dirty air filter.
These factors cause deposits on the spark plug electrode that
may result in malfunction
or starting difficulties.
If
the machine
is low on
power,
difficult
to start or
runs
poorly
while
idling
always
check
the spark plug
first before
taking
other
action.
If the spark plug is dirty,
clean it and at the same time
check that the electrode
gap
is 0.5 mm. The spark plug
should be changed after
about one month of
operation
or earlier if
necessm_y.
NOTE! Always
use the
recommended
type of spark
plug. An incorrect spark
plug can damage the
cylinder/piston.
1 6 - English
Advertisement
Table of Contents
