Ryobi RBC254SSEON User manual

1
ORIGINAL INSTRUCTIONS
Petrol Brushcutter
RBC254SSEON

Important!
It is essential that you read the instructions in this manual before assembling,
operating, and maintaining the product.
Subject to technical modification.

1
Safety, performance, and dependability have been given
top priority in the design of your brushcutter.
INTENDED USE
The brushcutter is intended to be used only by adults who
have read and understood the instructions and warnings
in this manual and can be considered responsible for their
actions. The product is only intended for use outdoors in a
well-ventilated area. For safety reasons, the product must
be adequately controlled by a two-handed operation.
The product tted with the TRI-ARC blade (and appropriate
guard), can cut bushes. The product is not designed to be
tted with a saw blade.
The cutting plane should be approximately parallel to the
ground surface. The product should not be used to cut or
trim hedges, bushes, or other vegetation where the cutting
plane is not parallel to the ground surface.
Do not use the product for any other purpose.
WARNING
To reduce the risk of injury, the user must read and
understand the operator’s manual.
WARNING
Do not attempt to operate the product until you
have read thoroughly and understood completely all
instructions and safety rules contained in this manual.
Failure to comply may result in accidents involving fire,
electric shock, or serious personal injury. Save the
operator’s manual and review frequently for continuing
safe operation, and instructing others who may use the
product.
WARNING
The product is not intended to be used by children or
persons with reduced physical, mental, or sensory
capabilities. Children should be adequately supervised
to ensure they do not play with the product.
GENERAL SAFETY WARNINGS
■For safe operation, read and understand all instructions
before using the product. Follow all safety instructions.
Failure to follow all safety instructions listed below, can
result in serious personal injury.
■Some regions have regulations that restrict the use of
the product. Check with your local authority for advice.
■Do not allow children or untrained individuals to use the
product.
■Do not start or run the engine in a closed or poorly
ventilated area; breathing exhaust fumes can kill.
■Clear the work area before each use. Remove all
objects such as rocks, broken glass, nails, wire, or
string, which can be thrown or become entangled in the
blade.
■Wear full eye and hearing protection while using the
product. If working in an area where there is a risk of
falling objects, head protection must be worn.
■Hearing protection may restrict the operator’s ability
to hear warning sounds. Pay particular attention to
potential hazards around and inside the working area.
■Wear heavy, long trousers, non-slip protective footwear
and gloves. Do not wear loose fitting clothing, short
trousers, jewellery of any kind, or use with bare feet.
■Secure long hair so it is above shoulder level to prevent
entanglement in any moving parts.
■Keep all bystanders, children, and pets at least 15 m
away. Stop the product if anyone enters the area.
■Do not use the product when you are tired, ill, or under
the influence of alcohol, drugs, or medication.
■Do not use in poor lighting. The operator needs clear
unrestricted vision to identify potential hazards.
■Keep firm footing and balance at all times. Do not
overreach. Overreaching can result in loss of balance
or exposure to hot surfaces.
■Keep all parts of your body away from any moving part.
■Do not touch area around the silencer or cylinder of the
product, these parts get hot from operation.
■Always stop the engine and allow it to cool down before
making any adjustments.
■Do not smoke when mixing fuel or filling fuel tank.
■Mix and store fuel in a container approved for fuel.
■Mix fuel outdoors where there are no sparks or flames.
Wipe up any fuel spillage. Move 9 m away from
refueling site before starting engine.
■Stop the engine and allow to cool down before refueling
or storing the product.
■Allow the engine to cool down; empty the fuel tank and
secure the product from moving before transporting in
a vehicle.
■Always stop the engine. Make sure all moving parts
have come to a complete stop:
●before servicing
●before leaving the product unattended
●before clearing a blockage
●before checking, cleaning, and working on the
product
●before changing accessories
●before removing the blade
●before installing the blade
●after striking a foreign object
●whenever performing maintenance
●whenever the product starts to vibrate abnormally
WARNING
Do not use cutting means or attachments, which are
not specified by RYOBI in this manual. This includes
the use of metal multi-piece pivoting chains and flail-
blades. These items are known to break up during use
and present a high risk of serious injury to the operator
or bystanders.

2
WARNING
Inspection after dropping or other impacts: Thoroughly
inspect the product and identify any problems or damage
to it. Any part that is damaged should be properly
repaired or replaced by an authorised service centre.
BRUSHCUTTER SAFETY WARNINGS
■Be sure the blade is properly installed and securely
fastened. Failure to do so can cause serious injury.
■Do not walk backwards when using the product.
■Walk, never run.
■Always ensure that ventilation openings are kept clear
of debris.
■Before each use and after any impact, check that there
are no damaged parts. Examine the cutting means for
signs of cracking or other damage. A defective switch
or any part that is damaged should be properly repaired
or replaced by an authorised service centre.
■Do not modify the product in any way. This may
increase the risk of injury to yourself or others.
■Never operate the product without the cutting
attachment guard in place and in good condition.
■Use heavy-duty gloves while installing or removing the
blades, they have sharp edges.
■Do not attempt to touch or stop the blade when it is
rotating.
■A moving blade can cause severe injury. Maintain
proper control of the product with both hands until the
blade has completely stopped rotating.
■Replace any blade that has been damaged. Always
make sure the blade is installed correctly and securely
fastened before each use.
■Use only the manufacturer’s replacement TRI-ARC
blade. Do not use any other cutting attachment.
■Never cut any material over 13 mm diameter.
■Your brushcutter is fitted with a harness. Carefully
adjust the harness to fit comfortably and help to support
the weight of the product at your right side.
■Identify the quick release mechanism and practice using
it before you start using the product. Its correct use may
prevent serious injury in case of an emergency. Never
wear additional clothing over the harness or otherwise
restrict access to the quick release mechanism.
■Cover the blade with the blade protector before storing
the product, or during transportation. Always remove
the blade protector before using the product. If not
removed, the blade protector could become a thrown
object as the blade begins to turn.
■Exercise extreme caution when using the blade with
the product. Blade thrust is the reaction that may occur
when the spinning blade contacts anything it cannot
cut. This contact may cause the blade to stop for an
instant, and suddenly “thrust” the product away from the
object that was hit. This reaction can be violent enough
to cause the operator to lose control of the product.
Blade thrust may occur without warning if the blade
snags, stalls, or binds. This is more likely to occur in
areas where it is difficult to see the material being cut.
■For cutting ease and safety, approach the weeds being
cut from the right to the left. In the event an unexpected
object or woody stock is encountered, this practice
could minimise the blade thrust reaction. Both hands
must be used at all times to control the product.
TRANSPORTATION AND STORAGE
■Stop the engine and allow it to cool down before storing
or transporting.
■Clean all foreign materials from the product.
■Cover the blade with the blade protector.
■Drain all fuel from tank into a container approved for
petrol. Remember to properly replace and tighten the
fuel cap.
■Run the engine until it stops, this will remove all fuel
that could become stale and leave varnish and gum in
the fuel system.
■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.
■When transporting the product in a vehicle, secure it
against movement or falling to prevent injury to persons
or damage to the product.
■Never carry or transport the product while the engine
is running.
■Abide all government and local regulations for the safety
storage and handling of petrol. Excess fuel should be
used in other 2-cycle engine powered equipment.
SHORT TERM
■Stop the engine, and allow it to cool down before
storing.
■Clean all foreign material 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.
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
The cutting attachment must not rotate in idle mode. If
this requirement is not satisfied, the clutch has to be
adjusted or the product needs an urgent maintenance
by a qualified technician.

3
WARNING
A leaking fuel cap is a fire hazard and must be replaced
immediately.
WARNING
Note that the blade nut is a NYLOC nut, which is to
be used for one time assembly only. Do not reuse the
NYLOC nut. When installing/reinstalling, use a new
NYLOC nut. Failure to follow this procedure can result
in serious injury.
WARNING
Make sure that the nut torque is ≥ 25 Nm when
assembling the blade. Failure to follow this procedure
can result in serious injury.
■Always stop the engine and allow it to cool down before
making any maintenance.
■You may make adjustments and repairs described
in this manual. For other repairs, have the product
serviced by an authorised service centre.
■Consequences of improper maintenance may include
excess carbon deposits resulting in loss of performance
and discharge of black lubricant residue dripping from
the muffler.
■Make sure all guards, straps, deflectors and handles
are properly and securely attached to avoid the risk of
personal injury.
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:
■Contact with cutting means
–Ensure that the blade protectors are fitted when the
product is not in use. Keep hands and feet away
from the blades at all times.
■Injury caused by vibration
–Always use the right tool for the job, use designated
handles, and restrict working time and exposure.
■Hearing injury caused by exposure to noise
–Wear hearing protection and limit exposure.
■Eye injury caused by flying debris
–Wear eye protection at all times.
■Risk of falling objects
–Wear head protection if there is any risk of falling
objects.
Kickback can occur when using the brushcutter. Ensure
proper control by using both hands on the designated
handles. Read and follow the directions elsewhere in this
manual to help reduce the risk of kickback.
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
contributing to Reynaud’s Syndrome.
■After each period of operation, exercise to increase
blood circulation.
■Ensure that the product is correctly located in a
designated working position before operating the
product.
■Limit the amount of exposure per day. Take frequent
work breaks.
If you experience any of the symptoms of this condition,
immediately discontinue use and see your physician.
WARNING
Injuries may be caused, or aggravated, by prolonged
use of a tool. When using any tool for prolonged periods,
ensure you take regular breaks.
SYMBOLS ON THE PRODUCT
Safety alert
Read and understand all instructions
before operating the product, follow all
warnings and safety instructions.
Wear eye, ear, and head protection.
Wear non-slip safety footwear when
using the product.
Wear non-slip, heavy-duty gloves.
Beware of thrown or flying objects.
Keep all bystanders, especially children
and pets, at least 15 m away from the
operating area.
The product is not intended for use with
a toothed saw type blade.
To reduce the risk of injury or damage,
avoid contact with any hot surface.

4
Guaranteed sound power level
76
Sound pressure level at idle
Run position
Set the choke lever to “Full” position.
Set the choke lever to “Half” position.
Waiting time: 10 seconds
PRIME - press the primer bulb 10 times
slowly.
Pull the starter rope
Squeeze throttle trigger to start / run.
Use unleaded petrol intended for motor
vehicle use with an octane rating of
91([R+M]/2) or higher.
Use 2-stroke lubricant for air cooled
engines.
Mix the fuel mix thoroughly and also each
time before refueling.
Starting a cold engine by hand
Starting a warm engine by hand
Starting a cold engine by electrical starter
Starting a warm engine by electrical
starter
TRI-ARC blade is appropriate for the
product and is suited for cutting pulpy
weeds and vines.
Beware of blade thrust
Rotational direction and maximum speed
of the shaft for the cutting attachment.
Pull: Quick release tab
Regulatory Compliance Mark (RCM).
Product meets applicable regulatory
requirements.
The following signal words and meanings are intended to
explain the levels of risk associated with this product.
DANGER
Indicates an imminently hazardous situation, which, if
not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not
avoided, may result in minor or moderate injury.
CAUTION
Without safety alert symbol
Indicates a situation that may result in property damage.
SYMBOLS IN THIS MANUAL
Note
Warning

5
UNPACKING
x 1 x 1x 1
x 1
x 3 x 1x 1
x 1
x 1
x 1

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KNOW YOUR PRODUCT
1
2
3
4
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6
8
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9
10
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12
13
14
15
16
1. Starter grip
2. Fuel cap
3. Trigger lock
4. Throttle trigger
5. Strap hanger
6. Shaft coupling
7. Lower shaft
8. Blade guard
9. TRI-ARC blade
10. Blade protector
11. Blade washer
12. Cupped washer
13. NYLOC nut
14. Front handle
15. Switch button
16. Choke lever

7
GETTING STARTEDGETTING STARTED GETTING STARTED GETTING STARTED
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54 6
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(50 : 1)
50 : 1 / 2%
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x10
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OVERVIEW
p.13
p.10
p.21
p.14-16
p.22
p.18
p.19
p.20

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OPERATION

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OPERATION
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OPERATION

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OPERATION
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OPERATION
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OPERATION
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OPERATION
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x10
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OPERATION
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MAINTENANCE
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25N.M
IV
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