Ryobi RBC-33 Owner's Operating Manual

Brand: Ryobi

Model: RBC-33

Category: Power tools

Type: Owner's Operating Manual

OWNER’S OPERATING MANUAL

PETROL BRUSH CUTTER

MODEL RBC-33

KEEP THIS MANUAL FOR FUTURE REFERENCE

Your new petrol brush cutter/line trimmer has been engineered and manufactured to Ryobi’s high

standard of dependability, ease of operation and operator safety. Properly cared for, it will give you

years of rugged, trouble free performance. If you use your petrol brush cutter/line trimmer properly

and only for what it is intended, you will enjoy years of safe, reliable servi

ce.

SPECIFICATIONS

Engine type........................................................................................2-stroke, air-cooled

Engine displacement................................................................................................ 33 cc

Engine max. speed......................................................................................... 10500min

-1

Engine idle speed...................................................................................3000+/-300min

-1

Clutch speed.................................................................................................... 4200min

-1

Fuel tank capacity................................................................................................... 800ml

Fuel type................................................................ 25:1 of unleaded

petrol & 2 stroke oil

Starting system............................................................................................Recoil starter

Spark plug type.....................................................................................................L7T/LD

Cutting diameter (Brush Cutter)............................................................................25.5cm

Cutting diameter (Line Trimmer)......

........................................................................43cm

Cutting line size...................................................................................... Ø2.4mm x 2.5m

Sound pressure level (Brush Cutter).......................................... L

99.6dB(A),k=3dB(A)

Sound pressure level (Line Trimmer)......................................... L

96.7dB(A),k=3dB(A)

Sound power level (Brush Cutt

er)............................................ L

111.5dB(A),k=3dB(A)

Sound power level (Line Trimmer)......................................... L

112.15dB(A),k=3dB(A)

Vibration level (Left handle) (Brush Cutter)...................................... 6.10m/s

, K=1.5m/s

Vibration level (Left handle) (Line Trimmer)..................................... 5.03m/s

, K=1.5m/s

Vibration level (Right handle) (Brush Cutter)....................................7.06m/s

, K=1.5m/s

Vibration level (Right handle) (Line Trimmer)...................................9.73m/s

, K=1.5m/s

Net weight................................................................................................................7.2kg

THANK YOU FOR BUYING A RYOBI

PETROL BRUSH CUTTER

CAUTION: Carefully read through this entire owner’s

manual, paying close attention to the general

safety rules and rules for safe operation,

before using.

IMPORTANT SAFETY INSTRUCTIONS

The purpose of safety rules is to attract your

ttention to possible dangers. The safety symbols

and the explanations with them, require your

careful attention and understanding. The safety

warnings do not by themselves eliminate any

danger. The instruction or warnings they give are

not substitutes for proper accident prevention

measures.

SAFETY ALERT SYMBOL. Indicates

danger, caution or warning. May be used

in conjunction with other symbols or

pictures.

Failure to obey a safety warning can result in

serious injury to yourself or to others. Always follow

the safety precautions to reduce the risk of fire,

electric shock and personal injury.

Do not attempt to operate this tool until you have

read thoroughly and completely understood the

safety rules, etc. contained in this manual. Failure

to comply can result in accidents involving fire,

electric shock or serious personal injury. Save this

Owners Operating Manual and review it frequently

for continual safe operation and for instructing

others who may use this tool.

INTENDED USE

The brush cutter/line trimmer is only intended for

cutting grass, weeds, bush and other such

undergrowth, and should not be used for any other

purpose such as edging or hedge cutting as this

may cause injury.

WARNING

Do not attempt to operate this machine

until you have read thoroughly and

understood completely all instructions,

safety rules etc contained in this manual.

Failure to comply may result in accidents

involving fire, electric shock or serious

personal injury. Save operator’s manual

and review frequently for continuing safe

operation, and instructing others who

may use this tool.

WARNING

o reduce the risk of injury, the user must

read and understand the operator’s

manual.

READ ALL INSTRUCTIONS

Do not allow children or untrained individuals to

use this unit.

Never 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 cutting line or blade.

Wear safety glasses or goggles that are marked to

comply with ANSI Z87.1 standard when operating

this product.

Wear heavy, long pants, boots, and gloves. Do not

wear loose fitting clothing, short pants, or go

barefoot. Do not wear jewellery of any kind.

Never operate this unit on the operator’s left side.

Secure long hair above shoulder level to prevent

entanglement in moving parts.

Keep all bystanders, children, and pets at least

15 m (50ft.) away.

Do not operate this unit when you are tired, ill, or

under the influence of alcohol, drugs, or

medication.

Do not operate in poor lighting.

Keep firm footing and balance. 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.

To avoid hot surfaces, never operate the unit with

the bottom of the engine above waist level.

Do not touch area around the muffler or cylinder of

the unit, these parts get hot from operation.

NOTICE

Do not use E15 or E85 fuel in this product. It is a violation of federal law and will damage the unit and

void your warranty. Only use unleaded gasoline containing up to 10% ethanol.

IMPORTANT SAFETY INSTRUCTIONS

Always stop the engine and remove the spark plug

ire before making any adjustments or repairs

except for carburetor adjustments.

nspect the unit before each use for loose

fasteners, fuel leaks, etc. Replace any damaged

arts before use.

The string head or blade will rotate during

carburetor adjustments.

It has been reported that vibrations from hand-held

tools may contribute to a condition called

Raynaud’s Syndrome in certain individuals.

Symptoms may include tingling, numbness, and

blanching of the fingers, 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. It is presently

unknown what, if any, vibrations or extent of

exposure may contribute to the condition. There

are measures that can be taken by the operator to

possibly reduce the effects of vibration:

a) Keep your body warm in cold weather. When

operating the unit wear gloves to keep hands

and wrists warm. It is reported that cold weather

is a major factor contributing to Raynaud’s

Syndrome.

b) After each period of operation, exercise to

increase blood circulation.

c) Take frequent work breaks. Limit the amount of

exposure per day.

d) Keep the tool well maintained, fasteners

tightened, and worn parts replaced.

If you experience any of the symptoms of this

condition, immediately discontinue use and see

your physician about these symptoms.

Mix and store fuel in a container approved for

gasoline.

Mix fuel outdoors where there are no sparks or

flames.

Wipe up any fuel spillage. Move 9 m (30 ft. ) away

from refueling site before starting engine.

Stop the engine and allow to cool before refueling

or storing the unit.

Allow the engine to cool; empty the fuel tank and

ecure the unit from moving before transporting in

a vehicle.

PECIFIC SAFETY RULES FOR TRIMMER USE

Replace string head if cracked, chipped, or

amaged in any way. Be sure the string head or

blade is properly installed and securely fastened.

Failure to do so can cause serious injury.

Make sure all guards, straps, deflectors, and

handles are properly and securely attached.

Use only the manufacturer’s replacement string in

the cutting head. Do not use any other cutting

attachment.

To install any other brand of cutting head to this line

trimmer can result in serious personal injury.

Never operate unit without the grass deflector in

place and in good condition.

Maintain a firm grip on both handles while

trimming.

Keep string head below waist level. Never cut with

the string head located over 76 cm (30 in.) or more

above the ground.

SPECIFIC SAFETY RULES FOR BRUSH

CUTTER AND BLADE USE

After engine stops, keep rotating blade in thicker

weeds or pulpy stalks until it stops.

Do not operate the brush cutter unless the brush

cutter guard is firmly secured in place and in good

condition.

Use heavy gloves when operating the brush cutter

and when installing or removing blades.

Always stop the engine and remove the spark plug

wire before attempting to remove any obstruction

caught or jammed in the blade or before removing

and installing the blade.

Do not attempt to touch or stop the blade when it is

rotating.

A coasting blade can cause injury while it continues

to spin after the engine is stopped or throttle trigger

released. Maintain proper control until the blade

has completely stopped rotating.

IMPORTANT SAFETY INSTRUCTIONS

Replace any blade that has been damaged. Always

ake sure blade is installed correctly and securely

fastened before each use. Failure to do so can

ause serious injury.

Use only the manufacturer’s replacement blade

ntended for use on this brush cutter. Do not use

any other blade. To install any other brand blade or

cutting head to this brush cutter can result in

serious personal injury.

The blade is suited for cutting thicker weeds or

pulpy stalks only. Do not use for any other purpose.

Never use the blade to cut woody brush.

Exercise extreme caution when using the blade

with this unit. 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 unit

away from the object that was hit. This reaction can

be violent enough to cause the operator to lose

control of the unit. Blade thrust can 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 could minimize

the blade thrust reaction.

Never cut any material over 13 mm (1/2 in.)

diameter.

Always wear the shoulder harness when using the

brushcutter and adjust to a comfortable operating

position.

Maintain a firm grip on both handles while cutting

with a blade. Keep the blade away from your body

and below waist level.

Never use the brushcutter with the blade located

76 cm (30 in.) or more above the ground level.

FUEL SAFETY

This product requires unleaded petrol and 2-stroke

oil, ratio 25:1.

Always handle fuel with care. It is highly flammable.

Use only an approved container for fuel storage

and mixing.

Never mix petrol/ oil in the machine fuel tank.

Do not smoke, and avoid sparks and flames near

fuel or unit.

Avoid spillage of fuel or oil. Wipe up all spillages as

uickly as possible.

Mix fuel outdoors where there are no sparks or

lames.

o not inhale fuel fumes.

Move at least 3 meters (10 feet) from refueling

position before starting the engine.

Stop the engine and allow to fully cool before

refueling or storing the machine.

Never use exposed light bulbs while refueling.

Change your clothes if you spill fuel on yourself.

Keep petrol and oil away from eyes. If petrol or oil

comes in contact with eyes, wash them

immediately with clean water. If irritation is still

present, seek immediate medical help.

TRANSPORATION, HANDLING AND STORAGE

Switch off the engine when you cross roads or

gravel paths.

Always clean and maintain before storing, pay

special attention to the guards and cutting

attachments.

Before transporting the unit in a vehicle stop the

engine and allow it to cool. Empty the fuel tank and

securely locate the unit.

When removing the tool from a vehicle or from

storage, be careful not to drop the engine on the

ground as this may severely damage the fuel tank.

Never drag the tool across the ground, or throw it

to the ground this is highly dangerous and will

damage the fuel tank, causing the fuel to leak,

possibly causing fire.

Remember when moving the equipment to lift it

entirely from the ground.

DESCRIPTION

1. Primer bulb

2. Air filter cover

3. Spark plug

4. Choke lever

5. Exhaust point

6. Starter handle

7. Fuel tank cap

8. U handle with controls

9. Harness hook

10. U handle

11. On/Off switch

12. Safety lever

13. Throttle trigger

14. Cutting line spool

15. Hex key

16. Hex key

17. Spanner

18. Spark plug wrench and screwdriver

19. Harness

20. Grass deflector

21. Cutting blade

22. Drive shaft

23. Clamp knob for drive shaft connection

24. Clamp

25. Fuel/Oil mixture bottle.

1819

UNPACKING

CAUTION. This packaging contains

harp objects. Take care when

unpacking. Remove the machine,

ogether with the accessories supplied, from the

ackaging. Check carefully to ensure that the

machine is in good condition and account for all the

accessories listed in this manual. Also make sure

that all the accessories are complete.

If any parts are found to be missing, the machine

nd its accessories should be returned together in

their original packaging to the retailer. Do not throw

he packaging away, keep it safe throughout the

uarantee period, then recycle if possible,

otherwise dispose of it by the proper means. Do

not let children play with empty plastic bags due to

the risk of suffocation.

ASSEMBLY

PACKING CONTENTS

• Trimmer Assembly (Engine with rear shaft).

• Drive shaft

• U handle with controls

• U handle

• Cutting line spool

• Cutting blade

• Grass deflector

• Harness

• Hex key x 2

• Fuel/Oil mixture bottle

• Spark plug wrench and screwdriver

• Spanner

• Operator’s manual.

WARNING. Do not attempt to modify this

product or create accessories not

recommended for use with this product.

Any such alteration or modification is

misuse and could result in a hazardous

condition leading to possible serious

personal injury.

WARNING. To prevent accidental

starting that could cause serious

personal injury, always disconnect the

engine spark plug wire from the spark

plug when assembling parts.

ASSEMBLING THE U-HANDLE

Loosen the 4 bolts on the upper clamp using a hex

key, Fig.1.

Remove the top half of the mounting bracket and

install the two U-handles into the lower half of the

mounting bracket, Fig.2. Make sure the handle with

controls is positioned for use with your right hand.

Replace the top half of the mounting bracket and

lightly tighten the four bolts with the hex key, Fig.3.

Do not fully tighten the bolts until you have set the

perfect working position with the harness.

Fig. 1

Fig. 2

Fig. 3

ASSEMBLY

ATTACHING THE GRASS DEFLECTOR

ARNING. The line cutting blade on the

grass deflector is sharp. Avoid contact

ith the blade. Failure to avoid contact

an result in serious personal injury.

ttach the grass deflector to the mounting bracket

and align the holes. Tighten the four screws from

the bottom of the grass deflector through the

mounting plate and into the mounting bracket using

the supplied spark plug wrench and screwdriver.

CONNECTING THE UPPER AND LOWER DRIVE

SHAFTS

The lower drive shaft connects to the trimmer

assembly by means of a coupler device.

1. Stop the engine and disconnect the spark plug

wire.

2. Loosen the clamp by turning the clamp knob

counterclockwise, Fig.5.

3. Align the shafts and insert the front shaft into

the rear shaft. Rotate the cutting head or blade

to make sure the assembly is successfully in

the right position.

4. Depress the flange (5.1), then tighten the

clamp knob securely by turning clockwise,

Fig.6.

NOTE: If the flange is not fully depressed, the drive

shafts are not locked into place.

WARNING! Be certain the clamp knob is

fully tightened before operating

equipment, check it periodically for

tightness during use to avoid serious

personal injury.

Fig. 4

Fig. 5

Fig. 6

5.1

ASSEMBLY

FITTING THE LINE SPOOL (FIG.7)

TTENTION: left thread - to tighten turn counter

clockwise, to loosen turn clockwise.

lace the mounting disc (3) on the shaft.

nsert the 4 mm Allen key (1) through the winding

guard and the mounting disc (3) into the opening

on the angle gear (blocks the angle gear). If

necessary turn the mounting disc (3) slightly.

Screw the line spool (2) onto the shaft by turning it

counter-clockwise.

Now tighten the trimmer head by hand.

Remove the Allen key and check for freedom of

motion of the line spool.

FITTING THE BLADE (FIG.8)

ATTENTION: left thread - to tighten turn counter

clockwise, to loosen turn clockwise.

WARNING! To prevent injury wear thick

safety gloves and use correct assembly

tools and equipment.

Unscrew the locknut (7) from the shaft by turning it

clockwise with the spark plug wrench and

screwdriver.

Remove the floating disc (6) and washer (5).

Insert the 4mm allen key (1) through the winding

guard and the locking disc into the opening in the

angular gear. If necessary turn the mounting disc

(3) slightly.

Position the blade (4), washer (5) and the floating

disc (6) as shown in Fig 6.

Screw down the locknut (7) and tighten it by turning

the allen key counter clockwise.

Remove Allen key and check for freedom of motion

of the blade.

ATTACHING THE HARNESS (FIG.9)

Connect the latch (A) on the shoulder strap to the

strap hanger (B).

Adjust the shoulder strap hanger to a balanced

position where the blade or cutter attachment will

suspend between 100 mm to 300 mm above the

ground surface.

Adjust the strap hanger to a comfortable position.

Note: To quickly release the product from the

shoulder strap, sharply pull the quick release tab

(C).

Fig. 7

Fig. 8

Fig. 9

OPERATION

WARNING. Do not allow familiarity with

his product to make you careless.

Remember that a careless fraction of a

econd is sufficient to inflict serious

njury.

ARNING. Always wear eye protection

with side shields marked to comply with

ANSI Z87.1, along with hearing

protection. Failure to do so could result

in objects being thrown into your eyes

and other possible serious injuries.

WARNING. Never use blades, flailing

devices, wire, or rope on this product.

Do not use any attachments or

accessories not recommended by the

manufacturer of this product. The use of

attachments or accessories not

recommended can result in serious

personal injury.

WARNING. Operation of this equipment

could create sparks that can start fires

around dry vegetation. A spark arrestor

may be replaced. The operator should

contact local fire agencies for laws or

regulations relating to fire prevention

requirements.

NOTE. Before each use, inspect the entire product

for damaged, missing, or loose parts such as

screws, nuts, bolts, caps, etc. Tighten securely all

fasteners and caps and do not operate this product

until all missing or damaged parts are replaced.

Please contact customer service or a qualified

service center for assistance.

ETHANOL-BLENDED FUELS

NOTE: Do not use E15 or E85 fuel in this product.

It is a violation of federal law and will damage the

unit and void your warranty. Only use unleaded

gasoline containing up to 10% ethanol.

FUELING AND REFUELING THE TRIMMER

WARNING. Petrol and its vapors are

highly flammable and explosive. To

prevent serious personal injury and

property damage, handle it with care.

Keep away from ignition sources and open flames,

handle outdoors only, do not smoke and wipe up

spills immediately.

FUEL MIXTURE

his product is powered by a 2-stroke engine and

requires pre-mixing petrol and 2-stroke oil. Pre-mix

nleaded petrol and 2-stroke engine oil in the

ontainer provided.

his engine is certified to operate on unleaded

petrol intended for automotive use with an octane

rating of 87 ([R + M] / 2) or higher.

Do not use any type of pre-mixed petrol / oil from

fuel service stations, this includes the pre-mixed

petrol / oil intended for use in mopeds,

motorcycles, etc.

Use synthetic 2-stroke oil only. Do not use

automotive oil or 2-stroke outboard oil.

Mix the 2-stroke oil into the petrol. This is a 25:1

ratio.

Mix the fuel thoroughly and also each time before

fueling.

Mix in small quantities. Do not mix quantities larger

than usable in a 30 day period. Synthetic 2-stroke

oil containing a fuel stabilizer is recommended.

FILLING THE FUEL TANK

Clean surface around fuel cap to prevent

contamination.

Loosen fuel cap slowly. Rest the cap on a clean

surface, Fig.10.

Carefully pour the mixed fuel into the tank. Avoid

spillage. Prior to replacing the fuel cap, clean and

inspect the gasket.

Immediately replace fuel cap and hand tighten.

Wipe up any fuel spillage. Move 9 m away from

refueling site before starting engine.

Note: It is normal for smoke to be emitted from a

new engine after first use.

Fig. 10

OPERATION

WARNING. Always shut off engine

efore fueling. Never remove fuel cap or

add fuel to a machine with a running or

ot engine. Make sure the unit is sitting

n a flat, level surface and only add fuel

outdoors. If the engine is hot, let the unit

cool for at least five minutes before

adding fuel. After fueling, immediately

replace fuel cap and tighten securely.

Move at least 30 ft. from refueling site

before starting engine. Do not smoke

and stay away from open flames and

sparks! Failure to follow these

instructions could result in a fire and

cause serious personal injury.

STARTING AND STOPPING

The brush cutter/ line trimmer should be on a flat,

bare surface for starting.

To start a cold engine:

Move the On/Off switch to the ‘ON’ position, Fig.11.

Push the primer bulb approximately ten times.

Set the choke lever to the CLOSE (UP) position,

Fig.12.

Depress safety lever and squeeze throttle trigger

fully, Fig.13 and pull starter handle and rope

sharply until engine attempts to start (no more than

4x), Fig.14.

Set the choke lever to OPEN (DOWN) position,

Fig.15.

Pull starter handle and rope until the engine runs,

Do not pull the starter handle more than 6 times.

NOTE: In cooler environments, additional pulls of

the starter grip and rope may be required with the

choke lever in the CLOSE (UP) position.

Fig. 12

Fig. 13

Fig. 14

Fig. 15Fig. 11

Throttle trigger

Safety lever

OPERATION

To start a warm engine:

ay the product on a flat, bare surface.

Move the On/Off switch to the ‘ON’ position.

Push the primer bulb until fuel is visible and flows

reely in the clear fuel tank return line. After

refueling, pump the bulb an additional 4 or 5 times.

Set the choke lever to CLOSE (UP).

Depress safety lever and squeeze throttle trigger

fully, pull the starter cord.

NOTE: If the product does not start, repeat the

previous steps.

To stop the engine:

Release the throttle trigger and allow engine to

return to idle before shutting off engine.

To stop the engine, depress the Stop/Start switch

to the stop position “STOP”, Fig.16.

NOTE:: Wait for the cutter blade to stop before

allowing the end of the cutter to come into contact

with anything.

NOTE: Do not operate the ignition switch during

use. Always wait for the engine to slow to idle

speed before stopping the engine.

OPERATING THE TRIMMER (FIG.17)

WARNING. Always position the machine

on the operator's right side. The use of

the machine on the operator's left side

will expose the operator to hot surfaces

and can result in possible burn injury.

To avoid burns from hot surfaces, never operate

unit with the bottom of the engine above waist

level.

Hold the trimmer with the right hand on the trigger

handle and the left hand on the left handle. Keep a

firm grip with both hands while in operation.

Trimmer should be held at a comfortable position

with the trigger handle about hip height.

Always operate trimmer at full throttle. Cut tall

grass from the top down. This will prevent grass

from wrapping around the shaft housing and string

head which may cause damage from overheating.

If grass becomes wrapped around the string head,

stop the engine, disconnect the spark plug wire,

Fig.18, and remove the grass. Prolonged cutting at

partial throttle will result in oil dripping from the

muffler.

Fig. 16

Fig. 17

Fig. 18

CUTTING TIPS

void hot surfaces by always keeping the tool

away from your body.

eep the trimmer tilted toward the area being cut;

this is the best cutting area.

The line trimmer cuts when passing the unit from

right to left. This will avoid throwing debris at the

operator. Avoid cutting in the dangerous area

shown in Fig.19.

Cut all grass from top to down. This will prevent

grass from wrapping around the shaft housing and

string head which could cause damage from

overheating. If grass becomes wrapped around the

string head, STOP THE ENGINE, disconnect the

spark plug wire, and remove the grass.

Use the tip of line to trim grass; do not force string

head into uncut grass.

Wire and picket fences cause extra line wear, even

breakage. Stone and brick walls, curbs, and wood

may wear line rapidly.

Avoid trees, flowers, stones, walls and other

objects which can cause the line breakage.

Check and feed the line regularly to maintain full

cutting width and performance.

OPERATING THE BRUSH CUTTER (FIG.20)

WARNING. Always position the machine

on the operator's right side. The use of

the machine on the operator's left side

will expose the operator to hot surfaces

and can result in possible burn injury.

To avoid burns from hot surfaces, never operate

unit with the bottom of the engine above waist

level.

Hold the brushcutter with the right hand on the

trigger handle and the left hand on the left handle.

Keep a firm grip with both hands while in operation.

Brush cutter should be held at a comfortable

position with the trigger handle about hip height.

Maintain your grip and balance on both feet.

Position yourself so that you will not be drawn off

balance by the kick-back reaction of the cutting

blade.

Adjust the shoulder strap to position the

brush cutter at a comfortable operating position

and to assure that the shoulder strap will reduce

the risk of operator contact with the blade.

OPERATION

Fig. 19

A. Straight shaft trimmer

B. Dangerous cutting area

C. Direction of rotation

D. Best cutting area

Fig. 20

OPERATION

Exercise extreme caution when using the blade

ith this unit.

Blade thrust is the reaction which may occur when

he spinning blade contacts anything it cannot cut.

This contact may cause the blade to stop for an

nstant, and suddenly “thrust” the unit away from

the object that was hit. This reaction can be violent

enough to cause the operator to lose control of the

unit. 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, Fig.22.

In the event that an unexpected object or woody

stock is encountered, this could minimise the blade

thrust reaction.

BLADE

The blade is suited only for pulpy weeds and vines.

When the blade becomes dull, it can be turned

over to extend the life of the blade. Do not sharpen

the blade.

CUTTING TECHNIQUE - BLADE

WARNING. Extreme care must be taken

when using blades to ensure safe

operation. Read the safety information

for safe operation using the blade, refer

to “Specific Safety Rules for Brushcutter

and Blade Use” earlier in this manual.

Always hold brushcutter with both hands when

operating. Use a firm grip on both handles.

Maintain your grip and balance on both feet.

Position yourself so that you will not be drawn off

balance by the kick-back reaction of the cutting

blade.

Inspect and clear the area of any hidden objects

such as glass, stones, concrete, fencing, wire,

wood, metal, etc.

Never use blades near footpaths, fencing, posts,

buildings or other immovable objects.

Never use a blade after hitting a hard object

without first inspecting it for damage. Do not use if

any damage is detected.

The unit is used as a scythe, cutting from the right

to the left in a broad sweeping action from side to

side.

EXTENDING THE CUTTING LINE

Run engine at full throttle.

Tap the knob on hard, bare ground to advance line.

The line advances each time the knob is tapped.

Do not hold the knob on the ground.

NOTE: The line trimming cut-off blade on the grass

deflector will cut the line to the correct length,

Fig.23.

NOTE: If the line is worn too short you may not be

able to advance the line by tapping it on the

ground. If so, stop the engine and manually

advance the line.

TO ADVANCE THE CUTTING LINE MANUALLY

Stop the engine and disconnect the spark plug

wire. Push the spool retainer down while pulling on

cutting lines to manually advance the string.

GRASS DEFLECTOR LINE TRIMMING CUT-OFF

BLADE

The trimmer is equipped with a line trimming cut-off

blade on the grass deflector. For best cutting,

advance line until it is trimmed to length by the

cut-off blade. Advance the line whenever you hear

the engine running faster than normal, or when

trimming efficiency diminishes. This will maintain

best performance and keep the line long enough to

advance properly.

Fig. 22

Fig. 23

MAINTENANCE

Normal maintenance, replacement or repair of

mission control devices and systems may be

performed by any qualified repair establishment or

ndividual with original or equivalent parts. Warranty

nd recall repairs must be performed by a

authorized service center; please contact customer

service for assistance.

WARNING. Before inspecting, cleaning,

or servicing the machine, shut off

engine, wait for all moving parts to stop,

and disconnect spark plug wire and

move it away from spark plug. Failure to

follow these instructions can result in

serious personal injury or property

damage.

WARNING. Always wear eye protection

with side shields marked to comply with

ANSI Z87.1, along with hearing

protection. Failure to do so could result

in objects being thrown into your eyes

and other possible serious injuries.

WARNING. When servicing, use only

recommended or equivalent

replacement parts. Use of any other

parts could create a hazard or cause

product damage.

NOTE: Periodically inspect the entire product for

damaged, missing, or loose parts such as screws,

nuts, bolts, caps, etc. Tighten securely all fasteners

and caps and do not operate this product until all

missing or damaged parts are replaced. Please

contact customer service or a qualified service

center for assistance.

GENERAL MAINTENANCE

Avoid using solvents when cleaning plastic parts.

Most plastics are susceptible to damage from

various types of commercial solvents and may be

damaged by their use. Use clean cloths to remove

dirt, dust, lubricant, grease, etc.

WARNING. Do not at any time let brake

fluids, gasoline, petroleum-based

products, penetrating lubricants, etc.,

come in contact with plastic parts.

Chemicals can damage, weaken or

destroy plastic which could result in

serious personal injury.

You can often make adjustments and repairs

described here. For other repairs, have the trimmer

serviced by an authorized service dealer.

SPOOL REPLACEMENT

ine diameter: ø2.4mm x 2.5m

Stop the engine, disconnect the spark plug wire.

old the line head, push down the releasing tab,

Fig.24 and unscrew the spool retaining cover by

and in a anticlockwise direction.

Remove the empty spool from the string head.

Keep the line attached to the spool.

To install the new spool, make sure the two lines

are captured in the slots opposite each other on the

spool and each line is extended approximately 152

mm beyond each slot, Fig.25.

Thread the strings into the spool holes in the line

head. Carefully push the spool into the line head

(gently pull the lines to the outside if necessary).

When the spool is positioned in line string head,

grasp the strings and pull sharply to release them

from the slots in the spool. Screw on the spool

retaining knob by locating the fixing tabs, pushing

down and rotating in a clockwise direction making

sure it is securely fastened.

Fig. 24

Fig. 25

Releasing tab

Spool retaining

cover

MAINTENANCE

REPLACING & CLEANING THE AIR FILTER

he air filter elements should be cleaned to provide

the engine abundant clean air which benefits the

tarting, power and life time of the engine.

Remove the air filter cover by unscrewing the

crew on the air filter cover., Fig.26.

Remove the air filter, Fig.27.

Clean the foam filter element with warm soapy

water. Rinse and let dry completely.

NOTE: If the foam filter element is damaged, it

should be replaced.

Apply a light coat of engine oil to the foam filter

element, then squeeze it out.

Reinstall the air filter.

NOTE: Make sure the filter is seated properly

inside the cover. Installing the filter incorrectly will

allow dirt to enter the engine, causing rapid engine

wear.

Replace the air filter cover and tighten the screw.

SPARK PLUG

Do not attempt to remove the spark plug from a hot

engine.

Clean or replace the spark plug if it is soiled with

heavy oil deposits.

Replace the spark plug if the centre electrode is

worn at the end.

This engine uses a L7T/LD spark plug with a

0.6-0.7mm electrode gap, Fig.28. Use an exact

replacement and replace annually.

1. Pull out the spark plug cap and clean the dust in

the spark plug area.

2. Screw out the spark plug with the provided

socket wrench.

3. Check the ceramic isolation. Replace the spark

plug if damaged.

4. Clean the electrodes (metal tip) to refresh the

surfaces.

5. Restore the spark plug and its cap.

NOTE: Be careful not to cross-thread the spark

plug. Cross-threading will seriously damage the

product.

CLEANING THE EXHAUST PORT AND

MUFFLER

NOTE: Depending on the type of fuel used, the

type and amount of oil used, and/or your operating

conditions, the exhaust port, muffler, and/or spark

arrestor screen may become blocked with carbon

deposits. If you notice a power loss with your gas

powered tool, you may need to remove these

deposits to restore performance. We highly

recommend that only qualified service technicians

perform this service.

Fig. 26

Fig. 27

Fig. 28

0.6-0.7mm

MAINTENANCE

IDLE SPEED ADJUSTMENT

ARNING. The cutting head will move

when adjusting the idle speed. Wear all

rotective clothing and keep all

ystanders, children, and pets at least

50 ft. away.

Make adjustments with the unit supported by hand

so that the cutting head does not contact the

ground or any object. Keep all parts of your body

away from the cutting head and muffler. Failure to

follow these instructions could result in serious

personal injury.

If the cutting attachment turns at idle, the idle

speed screw needs adjusting on the engine. Turn

the idle speed screw counterclockwise to reduce

the idle RPM and stop the cutting attachment

movement, Fig.29. If the cutting attachment still

moves at idle speed, contact customer support for

adjustment and discontinue use until the repair is

made.

WARNING. The cutting attachment

should never turn at idle. Turn the idle

speed screw counterclockwise to reduce

the idle RPM and stop the cutting

attachment. Serious personal injury

could result from the cutting attachment

turning at idle.

FUEL CAP, TANK, AND LINES

WARNING. Check for fuel leaks. A

leaking fuel cap, tank, or line is a fire

hazard and must be replaced

immediately. If you find any leaks,

correct the problem before using the

product. Failure to do so could result in

a fire that could cause serious personal

injury.

The fuel cap contains a non-serviceable filter and a

check valve. A clogged fuel filter will cause poor

engine performance. If performance improves

when the fuel cap is loosened, the check valve may

be faulty or filter clogged. Replace the fuel cap if

required.

STORING THE PRODUCT

Drain all fuel from tank into a container approved

for petrol. Run engine until it stops.

Clean all foreign material from the unit. Store it

in a well-ventilated place that is inaccessible to

children. Keep away from corrosive agents such as

garden chemicals and de-icing salts.

Abide by all ISO and local regulations for the safe

storage and handling of petrol. Excess fuel should

be used up in other 2-cycle engine powered

equipment.

Fig. 29

TROUBLESHOOTING

roblem Possible Cause Solution

o spark.

o fuel.

Engine is flooded.

Starter rope pulls harder

now than when new.

Engine requires

approximately three minutes

to warm up.

Carburettor requires

adjustment.

Check oil fuel mixture.

Air filter is dirty.

Spark arrestor screen is

dirty.

Idle speed screw on

carburettor needs

adjustment.

Line is welded to itself.

Not enough line on spool.

Line is worn too short.

Line is tangled on spool.

Engine speed is too slow.

Screw threads are dirty or

damaged.

Check spark. Remove spark plug. Reattach the

park plug cap and lay spark plug on metal cylinder.

Pull the starter rope and watch for spark at spark

plug tip. If there is no spark, repeat test with a new

park plug.

Push primer bulb until bulb is full of fuel. If bulb does

not fill, primary fuel delivery system is blocked.

Contact a servicing dealer. If primer bulb fills, engine

may be flooded, proceed to next item.

Remove spark plug, turn machine so spark plug

hole is aimed at the ground. Move choke lever to

“OPEN” and pull starter cord 10 to 15 times. This

will clear excess fuel from engine. Clean and

reinstall spark plug. Pull starter three times with

choke lever at “OPEN”. If engine does not start,

move choke lever to “CLOSE” and repeat normal

starting procedure. If engine still fails to start, repeat

procedure with a new spark plug.

Contact a servicing dealer.

Allow engine to completely warm up. If engine does

not accelerate after three minutes, contact a

servicing dealer.

Contact a servicing dealer.

Use fresh fuel and the correct 2-cycle oil mix.

Clean air filter. Refer to “Replacing and Cleaning

Air Filter” earlier in this manual.

Contact a servicing dealer.

Turn idle speed screw clockwise to increase idle

speed.

Lubricate with silicone spray.

Install a new spool.

Pull lines while alternately pressing down on and

releasing spool retainer.

Remove line from spool and rewind.

Advance line at full throttle.

Clean threads and lubricate with grease.

Engine will not start

Engine starts but will not

accelerate

Engine starts but will only

run at high speed at half

choke

Engine does not reach

full speed and emits

excessive smoke

Engine starts, runs, and

accelerates but will not

idle

Line will not advance

when using the Line tap

system

Spool retainer hard to

turn when using Line tap

system

TROUBLESHOOTING

Problem Possible Cause Solution

Cutting tall grass at ground

level.

Operating trimmer at part

throttle.

Operating trimmer at part

throttle

Check oil/fuel mixture.

Air filter dirty.

Cut tall grass from the top down to prevent

rapping.

perate trimmer at full throttle.

Use fresh fuel and the correct 2-stroke oil mix.

Clean per instruction in Maintenance Section.

Grass wraps around

riveshaft housing and

line head

il drips from muffler

SERVICE

Now that you have purchased your tool, should a need ever exist of repair or service, simply contact your

nearest Ryobi Authorised Service Centre or other qualified service organistion. Be sure to provide all

pertinent facts when you call or visit.

SYMBOLS

SYMBOL SIGNAL MEANING

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.

Recycle Symbol

Waste electrical products should not be disposed of with

household waste. Please recycle where facilities exist.

Check with your Local Authority or retailer for recycling

advice.

CE Marking

Conforms to relevant safety standards.

SYMBOLS

Safety Alert Symbol

Indicates danger, warning or caution. It means attention!!!

Your safety is involved.

Read Your Operator's

Manual

Your manual contains special messages to bring attention

to potential safety concerns as well as operating and

servicing information. Please read all the information

carefully to ensure satisfaction and safe use.

Wear Eye, Hearing and

Head Protection

Wear eye, hearing and head protection when operating

this equipment.

Keep Bystanders Away

Keep all bystanders at least 15 m away.

Ricochet

Danger of Ricochet.

No Toothed Blades

Not intended for use with a toothed saw type blade.

RPM Decal

Rotational direction and maximum speed of the shaft for

the cutting attachment.

Boots

Wear non-slip safety footwear when using this equipment.

Gloves

Wear non-slip, heavy-duty gloves.

No Smoking

Do not smoke when mixing fuel or filling fuel tank.

No Fire or Sparks Keep the machine away from fire and sparks.

Petrol and Oil

Use unleaded gasoline intended for motor vehicle use

with an octane rating of 87 [(R + M) / 2] or higher.

This product is powered by a 2-cycle engine and requires

pre-mixing gasoline and 2-cycle lubricant.

Danger of Burns Do not touch the hot exhaust.

ear shaft

peed

8000/min

Danger of Severe Injury

Do not put your hand near a spinning blade or line.

Blade Thrust May Occur

Beware of blade thrust. Products authorized for blade use

will display this symbol to warn of blade thrust.

Ryobi RBC-33 Owner's Operating Manual

Brand: Ryobi

Model: RBC-33

Category: Power tools

Type: Owner's Operating Manual

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Ryobi RBC-33 Owner's Operating Manual

Ryobi RBC-33 Owner's Operating Manual

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