MAINTENANCE
CarburettorThe muf�er on your machine is equipped with a spark arrestor
mesh, this should be cleaned regularly. A blocked mesh will
cause the engine to overheat and may lead to serious
WARNING! The complete clutch cover and damage.
shaft must be Ţtted before the machine is
!
started, otherwise the clutch can come loose
and cause personal injury.
Function
CAUTION! Never use a machine with a defective muf�er.
Y The carburettor governs the engineOs speed via the
throttle control. Air and fuel are mixed in the carburettor. WARNING! Muf�ers Ţtted with catalytic
The air/fuel mixture is adjustable. Correct adjustment is converters get very hot during use and
essential to get the best performance from the machine.!remain so for some time after stopping. This
also applies at idle speed. Contact can result
Y Adjusting the carburettor involves adapting the engine to
in burns to the skin. Remember the risk of
suit local conditions, e.g. climate, altitude and the petrol.
Å¢re!
Basic setting
The basic carburettor settings are adjusted during testing at Cooling system
the factory.
The carburettor should be adjusted to prevent damaging the
engine when the machine is always used at altitudes over
1500 metres above seal level.To keep the working temperature as low as possible the
machine is equipped with a cooling system.
CAUTION! For optimum adjustment of the carburettor,
contact a qualiŢed dealer/service workshop that has a
revolution counter at their disposal.
WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
!
stops, contact your dealer/service
workshop. Do not use the machine until it
has been correctly adjusted or repaired.
Muf�er
The cooling system consists of:
1 Air intake on the starter.
2 Fins on the �ywheel.
CAUTION! Some muf�ers are Ţtted with a catalytic
3 Cooling Ţns on the cylinder.
converter. See chapter on Technical data to see whether your
machine is Ţtted with a catalytic converter.4 Cylinder cover (directs cold air over the cylinder).
The muf�er is designed to reduce the noise level and to direct Clean the cooling system with a brush once a week, more
the exhaust gases away from the operator. The exhaust often in demanding conditions. A dirty or blocked cooling
gases are hot and can contain sparks, which may cause Ţre system results in the machine overheating which causes
if directed against dry and combustible material.damage to the piston and cylinder.
Spark plug
The spark plug condition is in�uenced by:
Y Incorrect carburettor adjustment.
Y A dirty air Ţlter.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difŢculties.
English � 17 |
ACEC
