Husqvarna 123L Operator's Manual page 5

SAFETY INSTRUCTIONS
Vibration damping system
Your machine is equipped with a vibration damping system
that is designed to minimize vibration and make operation
easier.
Use of incorrectly wound cord or an incorrect cutting
attachment increases the level of vibration.
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Muffler
The muffler is designed to keep noise levels to a minimum and
to direct exhaust fumes away from the user.
A muffler fitted with a catalytic converter is also designed to
reduce harmful exhaust gases.
In countries that have a warm and dry climate there is a
significant risk of fire. We therefore fit certain mufflers with a
spark arrestor mesh. Check whether the muffler on your
machine is fitted with this kind of mesh.
For mufflers it is very important that you follow the instructions
on checking, maintaining and servicing your machine. See
instructions under the heading Checking, maintaining and
servicing the machine's safety equipment.
Cutting equipment
A trimmer head is intended for trimming grass.
Locking nut
A locking nut is used to secure some types of cutting
attachment.
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