Maintenance; Carburettor; Muffler; Cooling System - McCulloch T26CS Manuel D'utilisation

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S1156009-38,T26CS_1.fm Page 18 Wednesday, April 6, 2016 1:15 PM

Carburettor

Adjustment of the idle speed
Before any adjustments are made, make sure that the air
filter is clean and the air filter cover is fitted.
Adjust the idle speed using the idle adjustment screw T, if
it is necessary to readjust. First turn the idle adjustment
screw T clockwise until the cutting attachment starts to
rotate. Then turn the screw anticlockwise until the cutting
attachment stops. The idle speed is correctly adjusted
when the engine will run smoothly in every position. The
idle speed should also be well below the speed at which
the cutting attachment starts to rotate.
Recommended idle speed: See the Technical data
section.
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.
Muffler
CAUTION! Some mufflers are fitted with a catalytic
converter. See chapter on Technical data to see whether
your machine is fitted with a catalytic converter.
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.
Some mufflers are equipped with a special spark arrestor
mesh. If your machine has this type of muffler, you should
clean the mesh at least once a month. This is best done
with a wire brush.
18 – English

MAINTENANCE

On mufflers without a catalytic converter the mesh should
be cleaned weekly, or replaced if necessary. On mufflers
fitted with a catalytic converter the mesh should be
checked, and if necessary cleaned, monthly. 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 catalytic converter is impaired.
Contact your dealer to inspect the muffler. A blocked
mesh will cause the machine to overheat and result in
damage to the cylinder and piston.
NOTE!
Rear housing shown removed for clarity only. It is not
recommended to remove cover for maintenance of
screen.
CAUTION! Never use a machine with a defective muffler.
WARNING! Mufflers fitted with catalytic
!
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. Remember
the risk of fire!

Cooling system

To keep the working temperature as low as possible the
machine is equipped with a cooling system.
1
The cooling system consists of:
1
Air intake on the starter.
2
Cooling fins on the cylinder.
Clean the cooling system with a brush annually or more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
2

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