OPERATOR'S MANUAL
String Trimmer / Brushcutter
PBC3046E
RY70105
Your new trimmer has been engineered and manufactured to Ryobi’s high standard for dependability, ease of operation, and operator
safety. Properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual.
Thank you for buying a Ryobi trimmer.
SAVETHIS MANUAL FOR FUTURE REFERENCE
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SAFETY
■ Inspect the unit before each use for loose fasteners, fuel
SPECIFIC SAFETY RULES FOR BRUSHCUTTER AND
BLADE USE
leaks, etc. Replace any damaged parts before use.
■ The string head or blade will rotate during carburetor
■ After engine stops, keep rotating blade in heavy grass
adjustments.
or pulpy weeks until it stops.
■ It has been reported that vibrations from hand-held tools
may contribute to a condition called Raynaud’s Syn-
drome 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 develop-
ment 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:
■ Do not operate the brushcutter unless the blade guard is
firmly secured in place and in good condition.
■ Use heavy gloves while 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
theblade.
■ 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 re-
leased. Maintain proper control until the blade has
completely stopped rotating.
a) Keep your body warm in cold weather. When operat-
ing the unit wear gloves to keep the hands and wrists
warm. It is reported that cold weather is a major
factor contributing to Raynaud’s Syndrome.
■ Replace any blade that has been damaged. Always
make sure blade is installed correctly and securely
fastened before each use. Failure to do so can cause
serious injury.
b) After each period of operation, exercise to increase
bloodcirculation.
c) Take frequent work breaks. Limit the amount of
exposure per day.
■ Use only the manufacturer's replacementTRI-ARC blade
intended for use on this brushcutter. Do not use any other
blade.
d) Keep the tool well maintained, fasteners tightened
andwornpartsreplaced.
■ The TRI-ARC blade is suited for cutting pulpy weeds and
vines only. Do not use for any other purpose. Never use
theTRI-ARC blade to cut woody brush.
If you experience any of the symptoms of this condition,
immediately discontinue use and see your physician
about these symptoms.
■ 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.
■ 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 secure
the unit from moving before transporting in a vehicle.
SPECIFIC SAFETY RULES FOR TRIMMER USE
■ Replace string head if cracked, chipped, or damaged in
any way. Be sure the string head or blade is properly
installed and securely fastened. Failure to do so can
cause serious injury.
■ Never cut any material over 13 mm (1/2 in.) diameter.
■ Make sure all guards, straps, deflectors and handles are
■ Always wear the shoulder strap 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 body and
below waist. Never use the brushcutter with the blade
located 76 cm (30 in.) or more above the ground level.
properly and securely attached.
■ Use only the manufacturer's replacement string in the
cutting head. Do not use any other cutting attachment.
■ Never operate unit without the grass deflector in place
and in good condition.
■ Cover the blade with the blade protector before storing
the unit, or during transportation. Always remove the
blade protector before using the unit. If not removed, the
blade protector could become a thrown object as the
blade begins to turn.
■ 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.
3
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SYMBOLS
Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL
NAME
EXPLANATION
Safety Alert Symbol
Indicates danger, warning or caution. It means
attention!!! Your safety is involved.
ReadYourOperator’sManual
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 assure satisfaction and
safe use.
Weareyeandhearingprotection.
Wear eye and hearing protection when operating this
equipment.
Keep bystanders away.
Ricochet.
Keep all bystanders at least 50 feet (15 m)
away.
Danger of Ricochet.
Tri-Arcblade.
Tri-Arc blade is appropriate for this unit and is suited
for cutting pulpy weeds and vines.
Do not use toothed blade.
This unit is not intended for use with a toothed saw
type blade.
RPM Decal
Boots
Rotational direction and maximum speed of the shaft
for the cutting attachment.
10,000 min-1
Wear non-slip safety footwear when using this
equipment.
Gloves
Wear non-slip, heavy-duty gloves.
NoSmoking
Do not smoke when mixing fuel or filling fuel tank.
Gasoline
Use unleaded gasoline intended for automotive use
with an octane rating of 87 ([R + M] / 2) or higher.
Oil
Use 2-cycle oil for air cooled engines.
Mix Gasoline and Oil
Mix the fuel mix thoroughly and also each time before
fueling.
4
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SYMBOLS
SYMBOL
NAME
EXPLANATION
Switch
On/Off Switch
I = ON to Run
O = OFF to Stop
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the explanations
with them, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any
danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.
SYMBOL
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 serious
injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices that may cause property damage.
NOTE:
Advises you of information or instructions vital to the operation or maintenance of the equipment.
SAVE THESE INSTRUCTIONS
TECHNICAL DATA
Weight
Without fuel and cutting attachment ......................................................................................................6.3 Kg
With blade ...........................................................................................................................................6.62 Kg
With string head ..................................................................................................................................6.49 Kg
Fuel tank volume ................................................................................................................................................... 42.5 cm3
Cutting swath.......................................................................................................................................................... 457 mm
Enginedisplacement ................................................................................................................................................ 30 cm3
Maximum engine performance (in accordance with ISO 8893) ............................................................................... 0.78 kW
Maximum rotational frequency of the spindle ....................................................................................................10000min-1
Engine Speed (rotational frequency) at recommended max. spindle rotational frequency ..................................12500min-1
Engine speed (rotational frequency) at idle ............................................................................................... 2000 - 2500 min-1
Fuel consumption (in accordance with ISO 8893) at max. engine performance ................................................... 0.52 kg/h
Specific fuel consumption (in accordance with ISO 8893) at max. engine performance ...................................... 0.47 kg/h
Vibration level idling -
FrontHandle ......................................................................................................................... 3.7
RearHandle .......................................................................................................................... 4.2
FrontHandle ......................................................................................................................... 9.3
RearHandle .......................................................................................................................... 7.1
Vibration level racing
Sound pressure level (in accordance with EN ISO 11806:1997, ISO 7917:1987) ............................................................ 97
Sound power level (in accordance with ISO 10884) ....................................................................................................... 112
5
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UNPACKING
INSTRUCTIONS
PACKING LIST FOR OWNER'S KIT
■ Carefully remove the product from the carton.
■ Grass deflector
■ Inspect the product to make sure no breakage or
■ Bladeguard
damageoccurredduringshipping.
■ Tri-Arcblade
■ Do not discard the packing material until you have
■ Shoulderstrap
inspected and operated the product.
■ Muffler guard, torx wrench and screws
■ FrontHandle
■ Holdingpin
■ Wrenches - 13 mm (1/2 in.) and 16 mm (5/8 in.)
■ Hardware
■ Operator'smanual
FEATURES
ENGINE HOUSING
CUTTING
LINE
THROTTLE
INTERLOCK
GRASS DEFLECTOR
IGNITION
SWITCH
FRONT HANDLE
STARTER GRIP
LINE CUT
OFF BLADE
COUPLER
THROTTLE
TRIGGER
STRAP
HANGER
SHAFT
HANDLE
BARRIER BAR
GEAR HEAD
KNOB
SHOULDER
STRAP
BLADE GUARD
Fig. 1
TRI-ARC BLADE
6
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ASSEMBLY
ATTACHING THE POWER HEAD TO THE
TRIMMER ATTACHMENT
See Figure 2.
STRING TRIMMER
SHAFT
COUPLER
WARNING:
Never attach or adjust any attachment while power head is
running. Failure to stop the engine can cause serious
personal injury.
GUIDE
RECESS
The trimmer attachment connects to the power head by
means of a coupler device.
1. Loosen the knob on the coupler of the power head shaft
and remove the end cap from the attachment.
KNOB
POSITIONING
HOLE
2. Push in the button located on the trimmer attachment
shaft. Align the button with the guide recess on the
power head coupler and slide the two shafts together.
Rotate the trimmer attachment shaft until the button
locks into the positioning hole.
TRIMMER ATTACHMENT
Fig. 2
NOTE: If the button does not release completely in the
positioning hole, the shafts are not locked into place.
Slightlyrotatefromsidetosideuntilthebuttonislockedinto
place.
3. Tighten the knob securely.
HANGER CAP
WARNING:
Be certain the knob is fully tightened before operating
equipment; check it periodically for tightness during use
to avoid serious injury.
HOLE
REMOVING THE ATTACHMENT FROM THE
POWER HEAD
For removing or changing the attachment:
1. Loosen the knob.
2. Push in the button and twist the shafts to remove and
separateends.
BUTTON
ATTACHING THE STORAGE HANGER
See Figure 3.
There are two ways to hang your attachment for storage.
Fig. 3
■ To use the hanger cap, push in the button and place the
hanger cap over end of the lower end attachment shaft.
Slightly rotate the cap from side to side until the button
locks into place.
■ The secondary hole in the attachment shaft can be used
for hanging purposes as well.
7
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ASSEMBLY
ATTACHING THE HANDLE
See Figure 4.
SPACER
A barrier handle should be used for ensuring the best
control and maximizing operator safety.
HANDLE BASE
SCREWS
1. Place the handle base and the bracket on the shaft
housing below the spacer.
2. Install the two handle base screws and nuts, but do not
tighten completely.
HANDLE
BASE
3. Place the front handle grip onto the handle base and
install the two screws. Tighten securely.
HANDLE
BARRIER
BAR
4. Adjust the position of the front handle for best balance
and comfort.
5. Tighten the two handle base screws securely.
NOTE: Do not attempt to remove or modify the spacer.This
spacer limits the upper position of the handle grip. See
Figure 4.
NUTS
BRACKET
STRAP HANGER
SPACER
FRONT HANDLE GRIP
SCREWS
Fig. 4
8
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ASSEMBLY
ATTACHING THE SHOULDER STRAP
See Figure 5.
REAR HOUSING
1. Connect the latch on the shoulder strap to the strap
hanger.
TORX
WRENCH
2. Adjust the strap to a comfortable position.
NOTE:Toquicklyreleasetheproductfromtheshoulderstrap,
sharply pull the quick release tab.
SCREWS
MUFFLER
GUARD
SHOULDER
STRAP
QUICK
RELEASE
TAB
BENT END OF
MUFFLER GUARD
LATCH
OPENING IN REAR
HOUSING
Fig. 6
STRAP HANGER
NOTE: When converting from brushcutter to string trimmer,
or string trimmer to brushcutter, make sure the correct
guard/deflector is being used. See Figure 7.
Fig. 5
MUFFLER GUARD
See Figure 6.
GRASS DEFLECTOR FOR
STRING TRIMMER USE
1. Remove muffler guard and two screws from the owner's
kit.
2. Attach the muffler guard to the rear housing.
NOTE: Make sure the bent end of the muffler guard fits
securely into the opening of the rear housing.
3. Using the torx wrench supplied, install the two screws
and tighten securely.
BLADE GUARD FOR
BRUSHCUTTER USE
Fig. 7
9
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ASSEMBLY
BLADE GUARD
FOUR SCREWS
MOUNTING CLAMP
See Figure 8.
1. Attach the blade guard to the mounting bracket; install
the four screws (10-24 x 3/4 in.) from the top of the
mounting bracket through the blade guard and into the
threadedmountingplates.
2. Using the torx wrench supplied, tighten all four screws
securely.
BLADE GUARD
NOTE: Whenusingthestringhead, thestringshieldmustbe
attached to blade guard.
NOTCHES
GRASS DEFLECTOR
See Figure 8.
1. Attach the grass deflector to the blade guard by placing
the three locking tabs into the three notches.
LOCKING
TABS
2. Snap the blade guard and grass deflector together to lock
into place.
THREADED
MOUNTING PLATES
WARNING:
Always stop the engine and remove the spark plug
wire before making any adjustments such as
changing cutting heads; this is to reduce the risk of
serious personal injury.
GRASS DEFLECTOR
Fig. 8
CONVERTING FROM STRING TRIMMER TO
BRUSHCUTTER
REMOVING THE STRING HEAD
See Figure 9.
GEAR
HEAD
1. Align the slot in the upper flange washer with the hole in
the gear head. Place the holding pin through the slot in
the upper flange washer and the hole in the gear head.
Turn the spool retainer clockwise to remove. Remove the
spool and string head from the drive connector.
UPPER FLANGE
WASHER
2. Place the holding pin through the upper flange washer
and the gear head. Using the 16 mm (5/8 in.) wrench
supplied, turn the drive connector clockwise to remove.
GRASS
DEFLECTOR
3. Remove the upper flange washer from the gear shaft and
retain for blade installation.
WRENCH
(16 mm)
4. Remove the grass deflector by pushing in on the three
locking tabs while pulling on the grass deflector to
separate from the blade guard.
HOLDING PIN
NOTE: Store the string head parts together for later use.
DRIVE CONNECTOR
SPOOL RETAINER
STRING HEAD
Fig. 9
10
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ASSEMBLY
INSTALLING THE BLADE
See Figure 10.
GEAR
HEAD
1. Place the upper flange washer over the gear shaft with
the hollow side toward the blade guard.
2. Center the blade on the upper flange, making sure the
blade sits flat. Install the cupped washer with the raised
center away from the blade. Install the blade nut. The
blade turns counterclockwise from the operator’s posi-
tion.
BLADE
UPPER FLANGE
WASHER
GUARD
3. Place the holding pin through the slot in the upper flange
washer and the hole in the gear head. Using the 13 mm
(1/2 in.) wrench supplied, turn the blade nut counter-
clockwise.
BLADE
HOLDING PIN
4. Tighten nut securely.
CONVERTING FROM BRUSHCUTTER TO
STRING TRIMMER
WRENCH
(13 mm)
CUPPED
WASHER
REMOVING THE BLADE
See Figure 10.
1. Place the holding pin through the slot in the upper flange
washer and the gear head.Turn the blade nut clockwise
to remove.
Fig. 10
BLADE NUT
2. Remove the cupped washer and the blade.
3. Remove the upper flange washer from the gear shaft and
retain for the string head installation.
4. Attach the grass deflector to the blade guard by placing
the three locking tabs into the three notches.
5. Snap the blade guard and grass deflector together to
lock into place.
NOTE: Store the brushcutter parts together for later use.
INSTALLING THE STRING HEAD
See Figure 9.
1. Install the upper flange washer onto the gear shaft with
the hollow side toward the gear head.
2. Place the holding pin through the slot in the upper flange
washer and the hole in the gear head. Using the 16 mm
(5/8 in.) wrench supplied, turn the drive connector
counterclockwise to install.Tighten securely.
3. Place the string head on the drive connector.
4. Place the holding pin through the slot in the upper flange
washer and the hole in the gear head. Install the spool
retainer and turn counterclockwise to tighten securely.
11
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OPERATION
FUEL AND REFUELING
WARNING
HANDLING THE FUEL SAFELY
Always shut off engine before fueling. Never add fuel
to a machine with a running or hot engine. Move at
least 9 m (30 ft.) from refueling site before starting
engine. Do not smoke!
■ Always handle fuel with care, it is highly flammable.
■ Always refuel outdoors where there are no sparks and
flames. Do not inhale fuel vapors.
■ Do not let gasoline or oil come in contact with your skin.
■ Keep gasoline and oil away from the eyes. If gasoline or
oil comes in contact with the eyes, wash them immedi-
ately with clean water. If irritation is still present, see a
doctorimmediately.
■ Clean up spilled fuel immediately.
1 Litre
+
+
+
+
+
20 ml
40 ml
60 ml
80 ml
100 ml
=
=
=
=
=
2 Litres
3 Litres
4 Litres
5 Litres
MIXING THE FUEL
50:1
■ This product is powered by a 2-cycle engine and requires
pre-mixing gasoline and 2-cycle oil. Pre-mix unleaded
gasoline and 2-cycle engine oil in a clean container
approvedforgasoline.
}
■ This engine is certified to operate on unleaded gasoline
intended for automotive use with an octane rating of 87
([R + M] / 2) or higher.
OPERATING THE TRIMMER
Hold the trimmer/brushcutter with the right hand on the rear
handle and the left hand on the front handle. Keep a firm
grip with both hands while in operation.Trimmer should be
held at a comfortable position with the rear handle about hip
height. See Figure 11.
■ Do not use any type of pre-mixed gasoline/oil from fuel
service stations, this includes the pre-mixed gasoline/oil
intended for use in mopeds, motorcycles, etc.
■ Use high a quality 2-cycle self mixing oil for air cooled
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, and remove the grass. Prolonged cutting at partial
throttle will result in oil dripping from the muffler.
engines. Do not use automotive oil or 2-cycle outboard
oil.
■ Mix 2% oil into the gasoline. This is a 50:1 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. A 2-cycle oil containing a fuel
stabilizer is recommended.
FILLING THE TANK
1. Clean surface around fuel cap to prevent contamination.
2. Loosen fuel cap slowly to release pressure and to keep
fuel from escaping around the cap.
3. Carefully pour fuel mixture into the tank. Avoid spillage.
4. Prior to replacing the fuel cap, clean and inspect the
gasket.
5. Immediately replace fuel cap and hand tighten. Wipe up
any fuel spillage. Move 9 m (30 ft.) away from refueling
site before starting engine.
NOTE: It is normal for smoke to be emitted from a new
engine during and after first use.
Fig. 11
12
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OPERATION
ADVANCING THE STRING
GRASS DEFLECTOR LINE TRIMMING CUT-
OFF BLADE
See Figure 13.
ADVANCING STRING USING THE EZ LINE™ TAP
ADVANCE SYSTEM
This trimmer is equipped with a line trimming cut-off blade
on the grass deflector. For best cutting, advance string until
it is trimmed to length by the cut-off blade. Advance string
whenever you hear the engine running faster than normal.
This will maintain best performance and keep string long
enough to advance properly.
String advance is controlled by tapping string head on grass
while running engine at full throttle.
1. Run engine at full throttle.
2. Tap string head on ground to advance string. String
advances each time the head is tapped.
3. Several taps may be required until string strikes the cut
off blade.
4. Resumetrimming.
NOTE: If the string is worn too short you may not be able to
advance the string by tapping it on the ground. If so, STOP
THE ENGINE, and manually advance the string.
ADVANCING THE STRING MANUALLY
Push the spool retainer down while pulling on string(s) to
manually advance the string.
CUTTING TIPS
See Figure 12.
■ Keep the trimmer tilted toward the area being cut; this is
the best cutting area.
Fig. 13
■ Do not cut in dangerous cutting area.
■ Use the tip of string to do the cutting; do not force string
head into uncut grass.
■ Wire and picket fences cause extra string wear, even
breakage. Stone and brick walls, curbs, and wood may
wear string rapidly.
■ Avoid trees and shrubs. Tree bark, wood moldings,
siding, and fence posts can easily be damaged by the
string.
DANGEROUS
CUTTING AREA
BEST CUTTING
DIRECTION OF
AREA
ROTATION
Fig. 12
13
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OPERATION
OPERATING THE BRUSHCUTTER
Hold the brushcutter with the right hand on the rear handle
and the left hand on the front handle. Keep a firm grip with
both hands while in operation. Brushcutter 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
kickback reaction of the cutting blade.
APPROACH THE WEEDS
BEING CUT FROM THE RIGHT.
THE WEEDS WILL BE CUT
AGAINST THE LEFT SIDE OF
THE BLADE GUARD.
Adjust the shoulder strap to position the brushcutter at a
comfortable operating position and to assure that the
shoulder strap will reduce the risk of operator contact with
the blade. See Figure 14.
Fig. 15
TRI-ARC BLADE
The TRI-ARC 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 TRI-ARC
blade.
Use onlyTRI-ARC blade, part number 984227001, available
at your local retailer.
CUTTING TECHNIQUE - BLADE
WARNING
Extreme care must be taken when using blades to
insure 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
kickback reaction of the cutting blade.
Fig. 14
■ Inspect and clear the area of any hidden objects such as
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. See Figure 15.
glass, rocks, concrete, fencing, wire, wood, metal, etc.
■ Never use blades near sidewalks, 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.
14
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OPERATION
STARTING AND STOPPING
IGNITION SWITCH
See Figures 16 and 17.
I
= ON TO RUN
O = OFF TO STOP
NOTE: The unit is equipped with an automatic choke feature.
Thestartinginstructionsforthisfeaturearedifferentfromunits
with a manual choke. Be sure to read and follow the starting
instructionsbelow.
WARNING
Never start or run the engine inside a closed or poorly
ventilated area; breathing exhaust fumes can kill.
THROTTLE
INTERLOCK
TO START A COLD ENGINE:
1 Lay trimmer on a flat, bare surface.
2 Push primer bulb 8 to 10 times.
NOTE: Do not squeeze the throttle trigger before engine
starts. Squeezing the throttle trigger at this time will prevent
the unit from starting.
THROTTLE
TRIGGER
3 Move the lever to the “COLD START” position. See
Fig. 16
Figure17.
4 Pull the starter rope until engine runs.
5 Allow the engine to warm up for 4-10 seconds.
PRIMER BULB
6 Depress the throttle interlock then squeeze and release
the throttle trigger. This allows the choke to automati-
cally set to the “WARM START” position. Your unit is
now ready for use.
NOTE: The lever will automatically set to the “WARM
START” position after the throttle trigger is squeezed for
the first time.
TO START A WARM ENGINE:
WARM START
POSITION
1. Lay trimmer on a flat, bare surface.
2. Choke lever should already be in the “WARM START”
position. If not, squeeze and release throttle trigger.
Pull the starter rope until unit runs.
TO STOP THE ENGINE:
To stop the engine, depress the switch to the “O” position.
COLD START
POSITION
Fig. 17
LEVER
15
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MAINTENANCE
6. Make sure the string head and the spool retainer are
installed on the shaft by turning the retainer counter-
clockwise to tighten.
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.
7. Pull the strings again to rotate the spool into cutting
position. Push the spool retainer down while pulling on
string(s) to manually advance the string and to check for
proper assembly of the string head.
■ You may make adjustments and repairs described here.
For other repairs, have the trimmer serviced by an
authorizedservicedealer.
■ Consequencesofimpropermaintenancemayinclude
excess carbon deposits resulting in loss of performance
and discharge of black oily residue dripping from the
muffler.
■ Make sure all guards, straps, deflectors and handles are
properly and securely attached to avoid the risk of
personalinjury.
SPOOL
RETAINER
SPOOL REPLACEMENT
EZ LINE™ TAP ADVANCE SYSTEM
NEW PREWOUND SPOOL
Fig. 18
See Figures 18 and 19.
If replacing string only, refer to “String Replacement” later in
this manual.
SPRING
Use only 2.4 mm (.095 in.) diameter monofilament string.
Use the manufacturer's replacement string for best perfor-
mance.
SPOOL
SLOTS
1. Stop the engine, disconnect the spark plug wire. Hold
the string head and unscrew the spool retainer. Turn
clockwise.
STRING HEAD
2. Remove the empty spool from the string head. Keep the
spring attached to the spool.
3. To install the new spool, make sure the two strings are
captured in the slots opposite each other on the new
spool. Make sure the ends of each string is extended
approximately 152 mm (6 in.) beyond each slot.
EYELETS
SHAFT
4. Thread the strings into the eyelets in the string head.
Carefully push the spool into the string head (gently pull
the strings to the outside if necessary). When the spool
is positioned in the string head, grasp the strings and
pull sharply to release them from the slots in the spool.
EYELETS
Fig. 19
5. Push down and turn the spool counterclockwise until it
no longer turns. Hold the spool down and rotate clock-
wise a small amount. Release the spool. The spool
should be locked down in the string head. If not, hold
down and rotate until locked.
16
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MAINTENANCE
STRING REPLACEMENT
See Figures 20 and 21.
1. Stop the engine, disconnect the spark plug wire.
Hold the string head and unscrew the spool retainer.
Turn clockwise.
2. Remove the spool from the string head. NOTE:
Keep the spring attached to the spool. Remove any
old string remaining on the spool.
SECOND
STRING
3. Cut two pieces of string, each being approximately
2.7 m (9 ft.) long.
4. Insert the first string into the anchor hole in the
upper part of the spool. Wind the first string around
the upper part of the spool counterclockwise, as
shown by the arrows on the spool. Place string in
the slot on upper spool flange, leaving about 152
mm (6 in.) extended beyond the slot. Do not overfill.
After winding the string, there should be at least 6
mm (1/4 in.) between the wound string and the
outside edge of the spool.
Fig. 22
SLOT
ARROWS ON
SPOOL
5. Repeat above step with second string, using the
bottom part of spool. Do not overfill.
6. Replace the spool and the spool retainer. Refer to
"Spool Replacement " earlier in this manual.
Fig. 23
SPOOL
SPRING
BLADE PROTECTOR
See Figures 24.
ARROWS ON
SPOOL
Always place the blade protector on the blade when the unit
is not in use.The blade protector has clips around the edges
to snap over the blade and keep it in place.Wear gloves and
be cautious when handling the blade.
ANCHOR
HOLE
NOTE: Always remove the blade protector before using the
unit. If not removed, the blade protector could become a
thrown object as the blade begins to turn.
FIRST STRING
Fig. 20
FIRST STRING
SLOT
BLADE
BLADE
PROTECTOR
Fig. 21
CLIPS
Fig. 24
17
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MAINTENANCE
CLEANING THE EXHAUST PORT AND
MUFFLER
LATCH
Depending on the type of fuel used, the type and amount of
oil used, and/or your operating conditions, the exhaust port
and muffler may become blocked with carbon deposits. If
you notice a power loss with your gas powered tool, a
qualified service technician will need to remove these
deposits to restore performance.
PULL COVER
TO OPEN
SPARK ARRESTOR
The spark arrestor must be cleaned or replaced every 25
hours or yearly to ensure proper performance of your
product. Spark arrestors may be in different locations
depending on the model purchased. Please contact your
nearest service dealer for the location of the spark arrestor
for your model.
Fig. 25
Cleaning Instructions:
FILTER
■ Remove the spark arrestor from the muffler.
■ If your spark arrestor is made of a fiberglass material,
discardandreplace.
■ If your spark arrestor is made of a metal material follow
these cleaning instructions:
1. Spray the spark arrestor with a quality carbon
cleaner.
2. Gently clean using a wire brush.
SLOTS ON AIR
FILTER BASE
3. Install the new or cleaned spark arrestor and reas-
semble completely before use.
REPLACING AND CLEANING AIR FILTER
See Figures 25 and 26.
TABS ON AIR
FILTER COVER
For proper performance and long life, keep air filter clean.
1 Remove the air filter cover by pushing down on the latch
with your thumb while gently pulling on the cover.
Fig. 26
2 Remove the filter, clean it in warm soapy water. Rinse
and let dry completely. For best performance, replace
annually.
3 Reinstall the filter.
4 Replace the air filter cover by inserting the tabs on the
bottom of the cover into the slots on the air filter base;
push the cover up until it latches securely in place.
18
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MAINTENANCE
FUEL CAP
STORAGE (1 MONTH OR LONGER)
1. Drain all fuel from tank into a container approved for
gasoline. Run engine until it stops.
WARNING:
A leaking fuel cap is a fire hazard and must be
replaced immediately.
2. Clean all foreign material from the trimmer. 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.
The fuel cap contains a non-serviceable filter and a check
valve. A clogged fuel filter will cause poor engine perfor-
mance. If performance improves when the fuel cap is
loosened, check valve may be faulty or filter clogged.
Replace fuel cap if required.
3. Cover the blade with the blade protector before storing
the unit, or during transportation.
4. Abide by all ISO and local regulations for the safe
storage and handling of gasoline. Excess fuel should be
used up in other 2-cycle engine powered equipment.
SPARK PLUG
This engine uses a Champion RCJ-6Y with 0,63 mm
(.025 in.) electrode gap. Use an exact replacement and
replace annually.
19
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TROUBLESHOOTING
IFTHESE SOLUTIONS DO NOT SOLVETHE PROBLEM CONTACTYOUR AUTHORIZED SERVICE DEALER.
PROBLEM
P
O
S
S
IB
LE
C
AU
S
E
S
O
LU
TIO
N
Engine will not start:
1. No spark.
1. Check spark. Remove spark plug. Reattach the
spark 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 spark plug.
2. No fuel.
2. Push primer bulb until bulb is full of fuel. If bulb
does not fill, primary fuel delivery system is
blocked. Contact a service dealer. If primer
bulb fills, engine may be flooded (see next
item).
3. Flooded engine.
3. Remove spark plug, turn trimmer so spark plug
hole is aimed at the ground. Make sure lever is
in the “WARM START” position and pull starter
cord 10 to 14 times. This will clear excess fuel
from engine. Clean and reinstall spark plug.
With the throttle trigger fully depressed, pull
starter cord three times with lever at “WARM
START” position. If engine does not start,
move choke lever to “COLD START” and follow
normal starting instructions in "STARTING
AND STOPPING" section. If engine still fails to
start, repeat procedure with a new spark plug.
4. Contact a service dealer.
4. Starter rope pulls harder now than
when new.
Throttle trigger is depressed.
Carburetorrequiresadjustment.
Release throttle trigger.Refer to “Starting and
Stopping” earlier in this manual.
Lever will not go into the
"COLD START" position:
*Turn “L” needle counterclockwise 1/16 turn. If
“L” low needle can not be turned counterclock-
wise, do not force plastic limiter caps. Contact a
service dealer. See Figure 27.
Engine starts but will not
accelerate:
1. Check oil fuel mixture.
2. Air filter dirty.
1. Use fresh fuel and the correct 2-cycle oil mix.
2. Clean air filter. Refer to “Replacing and
Cleaning Air Filter” earlier in this manual.
3. Turn “H” needle clockwise 1/16 - 1/8 turn. See
Figure27.
Engine does not reach full
speed and emits excessive
smoke:
3. Carburetorrequiresadjustment.
Carburetorrequiresadjustment.
Turn idle speed screw clockwise to increase
idle speed. See Figure 27.
Engine starts, runs, and
accelerates but will not
idle:
Carburetorrequiresadjustment.
Turn idle speed screw counterclockwise to reduce
idle speed. See Figure 27. If after adjustment,
blade continues to rotate, return to an authorized
service dealer for repair.
Blade continues to rotate at
idle speed:
20
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TROUBLESHOOTING
IFTHESE SOLUTIONS DO NOT SOLVETHE PROBLEM CONTACTYOUR AUTHORIZED SERVICE DEALER.
PROBLEM
POSSIBLE CAUSE
SOLUTION
String will not advance:
1. String welded to itself.
1. Lubricate with silicone spray.
2. Not enough string on spool.
2. Install more string. Refer to “String Replacement”
earlier in this manual.
3. String worn too short.
4. String tangled on spool.
5. Engine speed too slow.
3. Pull strings while alternately pressing down on and
releasingspoolretainer.
4. Remove string from spool and rewind. Refer to “String
Replacement” earlier in this manual.
5. Advance string at full throttle.
Grasswrapsaround
shaft housing and string
head:
1. Cutting tall grass at ground
level.
2. Operating trimmer at part
throttle.
1. Cut tall grass from the top down.
2. Operate trimmer at full throttle.
Spool retainer hard to
turn:
Screw threads dirty or damaged.
Clean threads and lubricate with grease - if no improve-
ment, replace spool retainer.
1. Operating trimmer at part
throttle
1. Operate trimmer at full throttle.
Oil drips from muffler:
2. Check oil/fuel mixture.
3. Air filter dirty.
4. Carburetorrequiresadjust-
ment.
2. Use fresh fuel and the correct 2-cycle oil mix.
3. Clean per instruction in Maintenance Section.
4. Turn “H” needle clockwise 1/16 - 1/8 turn. See Figure
27.
NOTE:The carburetor adjustment needle(s) are equipped with
plastic cap(s) that prevents counterclockwise rotation from
the original factory adjustment. If your unit exhibits specific
performance problem(s) where theTrouble Shooting Section
recommends a counterclockwise needle adjustment and no
adjustments have been made since original purchase, the unit
should be taken to a factory authorized service dealer for
repair. In most cases, the needed adjustment is a simple task
for the factory trained service representative.
IDLE SPEED
SCREW
“L” LO
NEEDLE
“H” HIGH
NEEDLE
Fig. 27
21
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WARRANTY
GUARANTEE – STATEMENT
(RTSA / RTUK / RTG)
All Ryobi products are guaranteed from defects in material and workmanship, for a period of twenty-four (24) months,
effective and evidenced from date of original invoice or delivery note.
Defects caused by normal wear and tear, unauthorized/improper maintenance/handling or overload are excluded from this
guarantee as are accessories such as battery packs, bulbs, blades and bits, etc.
In the event of malfunction within the guarantee period, please return the assembled product with proof of purchase, to your
dealer or nearest Ryobi Service Centre.
Your statutory rights in respect of defective products remain unaffected by the warranty.
RyobiTechnologies GmbH, Itterpark, D-40724 Hilden, Germany
RyobiTechnologies, Customer Services, Anvil House, Tuns Lane, Henley-on-Thames, RG9 1SA, UK
RyobiTechnologies, BP 50012 - 95945 Roissy CDG Cedex – FRANCE
Ryobi Technologies Australia PTY Limited, 359-361 Horsley Road, Milperra, NSW 2214 Australia
SAFETY DIRECTIVE
SOUND POWER/PRESSURE & HANDLE VIBRATION CHART FOR STRING TRIMMERS /
BRUSHCUTTERS
Information on Noise Emission per European Machine Safety Directive 98/37/EC.
The individual equipment listed was operated in a manner consistent with normal working conditions.
The A-weighted sound pressure level (LpA) at the operator’s ear and the A-weighted sound power level (LWA) were both measured
in accordance
with Directive 79/113/EEC. Hearing protection is recommended where levels exceed 85 dBA.
Handle vibration was measured in accordance to ISO 7916. Read the safety precautions section of the manual.
SOUND PRESSURE
LpA (dBA)
SOUND POWER
LwA (dBpA)
VIBRATION
m/s2
MODEL
MODEL NO.
PBC3046E
RY70105
97
112
7.1
EC DECLARATION OF CONFORMITY
According to machinery directive 98/37/EC and EMC directive 89/336/EEC - We,
Ryobi Technologies Inc., 1428 Pearman Dairy Road, Anderson, SC 29625
declare in sole responsibility that the product: PBC3046E (RY70105) - to which this certificate applies, conforms to the basic health
and safety requirements of the Machinery Directive 98/37/EC and other relevant directives, like EMC Directive 89/336/EEC and
Outdoor Directive 2000/14/EC.
To effect correct application of the health and safety requirements stated in the EEC directives, the following European and/or
national standards and/or technical specifications were consulted: EN ISO 14982:1998, ISO 7916 & 7917, EN ISO 11806:1997, ISO
7918-1995, ISO 8380-1993, ISO 8893-1989, ISO 10884-1995. EN 292-1.1991, EN 292-2-1991, EN 292-2:1991/A1;1995, EN
563-1994, EN 27917-1991, ISO 7112-1982, ISO 7113-1991
Wayne Hill
Director, Environmental Compliance
Ryobi Technologies Inc.
1428 Pearman Dairy Road
Anderson, SC 29625
December 21, 2002
22
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NOTES
23
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OPERATOR'S MANUAL
String Trimmer / Brushcutter
PBC3046E
RY70105
RyobiTechnologies GmbH
Itterpark 7
D-40724 Hilden
Germany
Tel.: +49 (0)2103 / 29 58 0
Fax : +49 (0)2103 / 29 58 29
RyobiTechnologies
Customer Services
Anvil House
Tuns Lane
Henley-on-Thames
RG9 1SA
UK
RyobiTechnologies
BP 50012 - 95945 Roissy CDG Cedex – FRANCE
RyobiTechnologies Australia PTY Limited
359-361 Horsley Road, Milperra, NSW 2214 Australia
983000-202
1-03
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