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Unit/Maintenance Safety
Disconnect the spark plug before perform-
ing maintenance, except carburetor adjust-
ments.
Muffler
CAUTION! Muffler is fitted with a catalytic
converter designed to reduce harmful ex-
haust gases.
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 com-
bustible material.
Mufflers are equipped with a special spark
arrestor mesh. The mesh should be
checked and, if necessary. cleaned by a
servicing dealer. If the mesh is damaged,
it should be replaced.
If the mesh is frequently blocked, this can
be a sign that the performance of the cata-
lytic converter is impaired. Contact your
servicing dealer to inspect the muffler. A
blocked mesh will cause the machine to
overheat and result in damage to the cylin-
der and piston.
Muffler bolts
Spark arrestor mesh
CAUTION! Never use a machine that has
a faulty or loose muffler. Ensure the muffler
bolts are tight.
115158126 Rev. 8 5/15/12
All manuals and user guides at all-guides.com
MAINTENANCE
CAUTION:
Mufflers fitted with catalyt-
ic converters get very hot during use and
remain so for some time after stopping.
This also applies at idle speed. Contact
can result in burns to the skin. Remem-
ber the risk of fire!
WARNING:
muffler contain chemicals that may
be carcinogenic. Avoid contact with
these elements in the event of a
damaged muffler.
WARNING:
fumes contain carbon monoxide,
which can cause carbon monoxide
poisoning. DO NOT start or run the
machine indoors, or anywhere that
is poorly ventilated. The exhaust
fumes from the engine are hot and
may contain sparks which can start
a fire. Never start the machine in-
doors or near combustible material!
Spark plug
The spark plug condition is influenced by:
S Incorrect carburetor adjustment.
S An incorrect fuel mixture (too much or in-
correct type of oil).
S A dirty air filter.
These factors cause deposits on the spark
plug electrodes, which may result in operat-
ing problems and starting difficulties.
If the machine is low on power, difficult to
start or runs poorly at idle speed: always
check the spark plug first before taking
any further action.
If the spark plug is dirty, clean it and check
that the electrode gap is 0.024 inch (0.6
mm). The spark plug should be replaced
after about a month in operation or earlier if
necessary.
CAUTION! Always use the recommended
spark plug type! Use of the wrong spark
plug can damage the piston/cylinder.
The inside of the
Engine exhaust
0.024 inch (0.6 mm)
English--- 24
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