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1. Turn the idle adjustment screw clockwise until the
cutting attachment starts to turn.
2. Turn the idle adjustment screw counterclockwise
until the cutting attachment stops.
Note: See
Technical data on page 20
for the
recommended idle speed.
To do maintenance on the muffler
WARNING: The muffler is designed
to decrease the noise level and to point
the exhaust gases away from the operator.
The exhaust gases are hot and can contain
sparks, which can cause fire if pointed
against dry and flammable material.
1. Examine if your product has a catalytic converter.
See
Technical data on page 20
.
WARNING:
Mufflers that have
catalytic converters get very hot during
operation and will stay hot for some time
after you stop the product. This also
applies at idle speed. If you touch the
product it can result in burns to the skin.
Think about of the risk of fire!
2. Some mufflers have a special spark arrester screen.
Clean the spark arrester screen with a wire brush
if your product has this type of muffler. Clean the
spark arrester screen weekly on mufflers without a
catalytic converter and on mufflers with a catalytic
converter this must be done monthly. Replace the
spark arrester screen if it is damaged and do not use
a product with a damaged spark arrester screen.
CAUTION: If the spark arrester
screen is frequently blocked it can be
a sign that performance of the catalytic
converter is decreased. Turn to your
servicing dealer to examine the muffler.
A blocked spark arrester screen will
cause overheating and result in damage
to the cylinder and piston.
CAUTION: The spark arrester screen
must be replaced if it is damaged. Do not
use a product if the spark arrester screen on
the muffler is missing or damaged.
To do maintenance on the trimmer
head
1. Only use the recommended cutting attachment and
cutting attachment guard. Refer to
Accessories on
page 21
.
2. Make sure that the cutter on the cutting attachment
guard is not damaged, it cuts the cord to the correct
length.
3. Install the cord as the illustrations on the last pages
of the manual shows.
Cooling system
The product has a cooling system to keep the operation
temperature as low as possible.
Clean the components of the cooling system with a
brush weekly or more frequently in rougher conditions.
A dirty or blocked cooling system makes the product too
hot which causes damage to the piston and cylinder.
The cooling system has the following components:
1. Air intake on the starter.
16
331 - 012 - 25.09.2023
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