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Locking nut, Cutting equipment, General safety precautions – Jonsered GC 2125C User Manual

Page 9

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GENERAL SAFETY PRECAUTIONS

If the muffler on your machine is fitted with a spark arrestor
screen this must be cleaned regularly. A blocked screen will
cause the engine to overheat and may lead to serious
damage.

Locking nut

A locking nut is used to secure some types of cutting
attachment.

When fitting, tighten the nut in the opposite direction to the
direction of rotation of the cutting attachment. To remove it,
undo the nut in the same direction as the cutting attachment
rotates. (CAUTION! The nut has a left-hand thread.) When
loosening and tightening the saw blade nut, there is a risk of
injury from the teeth of the saw blade. You should therefore
always ensure that your hand is shielded by the blade guard
when doing this. Always use a socket spanner with a shaft
that is long enough to allow this. The arrow in the diagram
shows the area where you should operate the socket spanner
when loosening or tightening the nut.

The nylon lining inside the locking nut must not be so worn
that you can turn it by hand. The lining should offer a
resistance of at least 1.5 Nm. The nut should be replaced
after it has been put on approx. 10 times.

Cutting equipment

This section describes how to choose and maintain your
cutting equipment in order to:

Reduce the risk of blade thrust.

Obtain maximum cutting performance.

Extend the life of cutting equipment.

Cutting equipment

Grass blades and grass cutters are intended for cutting
coarse grass.

A trimmer head is intended for trimming grass.

!

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!

!

WARNING! The inside of the muffler contain
chemicals that may be carcinogenic. Avoid
contact with these elements in the event of a
damaged muffler.

!

WARNING! Bear in mind that:

The exhaust fumes from the engine are hot
and may contain sparks which can start a
fire. Never start the machine indoors or near
combustible material!

IMPORTANT!

Only use cutting attachments with the guards we
recommend! See the chapter on Technical data.

Refer to the instructions for the cutting attachment to check
the correct way to load the cord and the correct cord
diameter.

Keep the teeth of the blade correctly sharpened! Follow our
recommendations. Also refer to the instructions on the
blade packaging.

!

WARNING! Always stop the engine before
doing any work on the cutting attachment.
This continues to rotate even after the
throttle has been released. Ensure that the
cutting attachment has stopped completely
and disconnect the HT lead from the spark
plug before you start to work on it.

!

WARNING! Using an incorrect cutting
attachment or an incorrectly sharpened
blade increases the risk of blade thrust.