Ryobi RHT4550 Original Instructions Manual Download Page 5

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English

WARNING

If the product is dropped, suffers heavy impact, or begins
to vibrate abnormally, immediately stop the product and
inspect for damage or identify the cause of the vibration.
Any damage should be properly repaired or replaced by
an authorised service centre.

■

Electrical power should be supplied via a residual
current device (RCD) with a tripping current of not more
than 30 mA.

■

If you need to use an extension cable, ensure it is
suitable for outdoor use and has a current capacity
sufficient to supply your product. Check it before every
use for damage. Always uncoil it during use because
coiled cables can overheat.

■

Before every use, examine the supply cord for damage.
If there are signs of damage, it must be replaced by
a qualified person at an authorised service centre to
avoid a hazard.

OVERLOAD PROTECTION

The product has an overload protection device that is
activated when overheating or when a current spike occurs,
automatically shutting down power within the product. To
resume operation, disconnect the product from the power
supply, wait for about 15 minutes, and reconnect the
product to the power supply.

TRANSPORTATION AND STORAGE

■

Stop the product, disconnect from the power supply,
and wind the cable. Allow the product to cool down
before storing or transporting.

■

Clean all foreign materials from the product. Store the
product in a cool, dry, and well-ventilated place that
is inaccessible to children. Keep away from corrosive
agents, such as garden chemicals and de-icing salts.
Do not store outdoors.

■

Cover the blade with the blade protector before storing
the product or during transportation.

■

For transportation in vehicles, secure the product
against movement or falling to prevent injury to persons
or damage to the product.

MAINTENANCE

WARNING

Use only original manufacturer’s replacement parts,
accessories, and attachments. Failure to do so can
cause possible injury, poor performance, and may void
your warranty.

WARNING

Servicing requires extreme care and knowledge
and should be performed only by a qualified service
technician. For service, bring the product to an
authorised service centre. When servicing, use only
original replacement parts.

WARNING

The blades are sharp. To prevent personal injury,
exercise extreme caution when cleaning, lubricating and
fitting, or removing the blade protector.

■

Switch off the motor, disconnect the product from
the power supply, and make sure all moving parts
have come to a complete stop before conducting any
maintenance or cleaning work.

■

You only make adjustments or repairs described in
this manual. For other repairs, contact the authorised
service centre.

■

After each use, clean the product with a soft, dry cloth.

■

After each use, clean the debris from the blades with a
stiff brush, and then carefully apply a rust-preventative
lubricant before refitting the blade protector. Use
a recommended rust-preventative lubricant spray
to apply an even distribution and reduce the risk of
personal injury from contact with the blades. For
information about suitable spray product, check with
your local authorised service centre.

■

Lubricate the blades lightly before use, if necessary,
using the above method.

■

Check all nuts, bolts, and screws at frequent intervals
for proper tightness to ensure the product is in safe
working condition. Any part that is damaged should be
properly repaired or replaced by an authorised service
centre.

RESIDUAL RISKS

Even when the product is used as prescribed, it is still
impossible to completely eliminate certain residual risk
factors. The following hazards may arise in use and the
operator should pay special attention to avoid the following:

■

Injury caused by contact with the blades.

–

The blade cannot be guarded while cutting. Keep
the blade away from yourself and others. Cover it
with the blade protector when the product is not in
use.

■

Injury caused by vibration.

–

Always use the right tool for the job. Use designated
handles and restrict working time and exposure.

■

Hearing damage caused by exposure to noise.

–

Wear ear protection and limit exposure.

RISK REDUCTION

It has been reported that vibrations from handheld tools
may contribute to a condition called Raynaud’s Syndrome.
Symptoms may include tingling, numbness, and blanching
of the

ngers, usually apparent upon exposure to cold.

Hereditary factors, exposure to cold and dampness, diet,
smoking, and work practices are all thought to contribute to
the development of these symptoms. There are measures
that can be taken by the operator to possibly reduce the
effects of vibration:

■

Keep your body warm in cold weather. When operating
the product, wear gloves to keep the hands and wrists
warm. It is reported that cold weather is a major factor