766r
2-Cycle Gas Trimmer
OPERATOR’S MANUAL
FOR QUESTIONS, CALL 1-800-345-8746 in U.S. or
1-800-265-6778 in CANADA
IMPORTANT MANUAL
DO NOT THROW AWAY
CALIFORNIA EMISSION REGULATIONS
This unit meets the 1995 to 1998 California emissions regulations for small off-road engines. These
units are identified by the label on the engine of your product. A typical identification label is shown.
To ensure that your unit continues to meet these regulations, refer to the following information and
instructions in this operator’s manual.
California Proposition 65 Warning:
WARNING
THE ENGINE EXHAUST FROM THIS
PRODUCT CONTAINS CHEMICALS
KNOWN TO THE STATE OF
CALIFORNIA TO CAUSE CANCER,
BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
SPARK ARRESTOR
NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington.
All U.S. Forest Land and the states of California (Public Resources Codes 4442 and 4443), Oregon and
Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-
covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for
regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability
or a fine. This unit is not factory equipped with a spark arrestor. If these items are required in your area,
ask your LOCAL SERVICE dealer to install the Optional Accessory Part #180030 Spark Arrestor Kit.
WARNING!
Read the Operator’s Manual(s) and follow all warnings and safety
instructions. Failure to do so can result in serious injury to the operator
and/or bystanders.
FOR QUESTIONS, CALL 1-800-345-8746 IN U.S. OR 1-800-265-6778 in CANADA
3
RULES FOR SAFE OPERATION
The purpose of safety symbols is to attract your
DANGER: Failure to obey a safety
attention to possible dangers. The safety
symbols, and their explanations, 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.
warning will result in serious injury
Always
to yourself or to others.
follow the safety precautions to
reduce the risk of fire, electric
shock, and personal injury.
WARNING: Failure to obey a safety
warning can result in injury to
SYMBOL
MEANING
Always follow
yourself and others.
SAFETY ALERT SYMBOL:
the safety precautions to reduce the
risk of fire, electric shock, and
personal injury.
Indicates danger, warning, or
caution. Attention is required in
order to avoid serious personal
injury. May be used in conjunction
with other symbols or pictographs.
CAUTION: Failure to obey a safety
warning may result in property
damage or personal injury to
NOTE: Advises you of information or
instructions vital to the operation or
maintenance of the equipment.
Always follow
yourself or to others.
the safety precautions to reduce the
risk of fire, electric shock, and
personal injury.
• IMPORTANT SAFETY INFORMATION •
•
Be aware of the risk of injury to the head,
hands and feet.
READ ALL INSTRUCTIONS
BEFORE OPERATING
•
Clear the area to be cut 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
attachment. Clear the area of children,
bystanders, and pets. At a minimum, keep all
children, bystanders and pets outside a 50 ft.
(15m.) radius; there still may be a risk to
bystanders from thrown objects. Bystanders
should be encouraged to wear eye
•
Read the instructions carefully. Be familiar
with the controls and proper use of the unit.
•
Do not operate this unit when tired, ill, or
under the influence of alcohol, drugs, or
medication.
•
•
Children and teens under the age of 15 must
not use the unit, except for teens guided by
an adult.
Inspect the unit before use. Replace
damaged parts. Check for fuel leaks. Make
sure all fasteners are in place and secure.
Replace cutting attachment parts that are
cracked, chipped, or damaged in any way.
Make sure the cutting attachment is properly
installed and securely fastened. Be sure the
cutting attachment shield is properly
attached, and positioned as recommended.
Failure to so can result in personal injury to
the operator and bystanders, as well as
damage to the unit.
protection. If you are approached, stop the
engine and cutting attachment immediately.
•
•
Squeeze the throttle control and check that it
returns automatically to the neutral position.
Make all adjustments or repairs before using
unit.
This unit was not designed to be used as a
brushcutter. Do not attach or operate this
unit with any type of brushcutting blade or
brushcutting attachment.
SAFETY WARNINGS FOR GAS
TRIMMERS
WARNING: Gasoline is highly flammable, and its
vapors can explode if ignited. Take the following
precautions:
•
Use only 0.080 in. (2.03 mm) diameter
genuine Ryobi replacement line. Never use
metal-reinforced line, wire, or rope, etc..
These can break off and become a
dangerous projectile.
4
RULES FOR SAFE OPERATION
•
•
Store fuel only in containers specifically
designed and approved for the storage of
such materials.
•
Avoid accidental starting. Be in the starting
position whenever pulling the starter rope.
The operator and unit must be in a stable
position while starting. See
Always stop the engine and allow it to cool
before filling the fuel tank. Never remove the
cap of the fuel tank, or add fuel, when the
engine is hot. Never operate the unit without
the fuel cap securely in place. Loosen the
fuel tank cap slowly to relieve any pressure in
the tank.
Starting/Stopping Instructions.
Use the right tool. Only use this tool for the
purpose intended.
•
•
•
Do not overreach. Always keep proper
footing and balance.
Always hold the unit with both hands when
operating. Keep a firm grip on both the front
and rear handle or grips.
•
Mix and add fuel in a clean, well-ventilated
area outdoors where there are no sparks or
flames. Slowly remove the fuel cap only after
stopping engine. Do not smoke while fueling
or mixing fuel. Wipe up any spilled fuel from
the unit immediately.
•
•
•
Keep hands, face, and feet at a distance
from all moving parts. Do not touch or try to
stop the cutting attachment when it is
rotating.
•
•
Avoid creating a source of ignition for spilled
fuel. Do not start the engine until fuel vapors
dissipate.
Do not touch the engine or muffler. These
parts get extremely hot from operation.
When turned off they remain hot for a
short time.
Move the unit at least 30 ft. (9.1 m) from the
fueling source and site before starting the
engine. Do not smoke, keep sparks and
open flames from the area while adding fuel
or operating the unit.
Do not operate the engine faster than the
speed needed to cut, trim or edge. Do not
run the engine at high speed when not
cutting.
WHILE OPERATING
•
•
Always stop the engine when cutting is
delayed or when walking from one cutting
location to another.
•
Never start or run the unit inside a closed
room or building. Breathing exhaust fumes
can kill. Operate this unit only in a well
ventilated area outdoors.
If you strike or become entangled with a
foreign object, stop the engine immediately
and check for damage. Do not operate
before repairing damage. Do not operate the
unit with loose or damaged parts.
•
Wear safety glasses or goggles that are
marked as meeting ANSI Z87.1-1989
standards, and ear/hearing protection when
operating this unit. Wear a face or dust mask
if the operation is dusty. Long sleeve shirts
are recommended.
•
•
Stop and switch the engine to off for
maintenance, repair, or for changing the
cutting attachment or other attachments.
•
•
Wear heavy, long pants, boots and gloves.
Do not wear loose clothing, jewelry, short
pants, sandals or go barefoot. Secure hair
above shoulder level.
Use only genuine Ryobi replacement parts
when servicing this unit. These parts are
available from your authorized service
dealer. Do not use parts, accessories or
attachments not authorized by Ryobi for this
unit. Doing so could lead to serious injury to
the user, or damage to the unit, and void
your warranty.
The cutting attachment shield must always
be in place while operating the unit. Do not
operate unit without both trimming lines
extended, and the proper line installed. Do
not extend the trimming line beyond the
length of the shield.
•
•
Keep unit clean of vegetation and other
materials. They may become lodged
between the cutting attachment and shield.
•
•
•
•
This unit does not have a clutch. The cutting
attachment rotates when the engine is idling.
To reduce fire hazard, replace faulty muffler
and spark arrestor, keep the engine and
muffler free from grass, leaves, excessive
grease or carbon build up.
Adjust the D-handle to your size to provide
the best grip.
Be sure the cutting attachment is not in
contact with anything before starting the unit.
Use the unit only in daylight or good artificial
light.
5
RULES FOR SAFE OPERATION
•
Never douse or squirt the unit with water or
OTHER SAFETY WARNINGS
any other liquid. Keep handles dry, clean and
free from debris. Clean after each use, see
Cleaning and Storage instructions.
•
•
•
Never store the unit, with fuel in the tank,
inside a building where fumes may reach an
open flame or spark.
•
Keep these instructions. Refer to them often
and use them to instruct other users. If you
loan someone this unit, also loan them these
instructions.
Allow the engine to cool before storing or
transporting. Be sure to secure the unit while
transporting.
Store the unit in a locked up and dry or high
and dry place to prevent unauthorized use or
damage, out of the reach of children.
SAVE THESE INSTRUCTIONS
SAFETY AND INTERNATIONAL SYMBOLS
This operator's manual describes safety and international symbols and pictographs that may appear
on this product. Read the operator's manual for complete safety, assembly, operating and
maintenance and repair information.
SYMBOL
MEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning, or caution. May be used in
conjunction with other symbols or pictographs.
• WARNING - READ OPERATOR'S MANUAL
Read the Operator’s Manual(s) and follow all warnings and safety
instructions. Failure to do so can result in serious injury to the
operator and/or bystanders.
• FOR SERVICE INFORMATION, CALL:
USA: 1-800-345-8746
CANADA: 1-800-265-6778
• WEAR EYE AND HEARING PROTECTION
WARNING: Thrown objects and loud noise can cause severe eye
injury and hearing loss. Wear eye protection meeting ANSI
Z87.1-1989 standards and ear protection when operating this unit.
• KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders, especially children and pets,
at least 50 feet (15 m.) from the trimming area.
• PRIMER BULB
Push primer bulb, fully and slowly, 5 to 7 times.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
6
RULES FOR SAFE OPERATION
SYMBOL
MEANING
• THROWN OBJECTS AND ROTATING CUTTER CAN
CAUSE SEVERE INJURY
WARNING: Do not operate without the cutting attachment
shield in place. Keep away from the rotating cutting
attachment.
• ON/OFF STOP CONTROL
ON / START / RUN
• ON/OFF STOP CONTROL
OFF OR STOP
• HOT SURFACE WARNING
Do not touch a hot muffler or cylinder. You may get burned.
These parts get extremely hot from operation. When turned
off they remain hot for a short time.
• SHARP BLADE
WARNING: There is a sharp blade on the cutting attachment
shield. To prevent serious injury, do not touch blade.
• DO NOT USE BLADES
WARNING: To prevent serious injury, do not attach or operate
the unit with any type of blade.
• INDICATES OIL
Refer to operator's manual for the proper type of oil.
• CHOKE CONTROL
A • FULL CHOKE position.
B • PARTIAL CHOKE position.
C • RUN position.
WARNING: The operation of any power tool can cause foreign objects to be
thrown into your eyes. This can lead to severe eye damage. Before commencing
power tool operation, always wear safety glasses or goggles that are marked as
meeting ANSI Z87.1-1989 standards, and a full face shield when needed.
7
RULES FOR SAFE OPERATION
KNOW YOUR UNIT
Fuel Cap
APPLICATION
Use this unit for;
On/Off Stop Control
•
•
Cutting grass and light weeds.
Decorative trimming around trees,
fences, etc.
Starter Rope
Shaft Grip
Spark Plug
Throttle Control
D-handle
Choke Lever
Power Head
Shaft Housing
Primer Bulb
Air filter/Muffler Cover
Line Cutting Blade
Cutting Attachment Shield
Cutting Attachment
8
ASSEMBLY INSTRUCTIONS
5. Tighten the wing nut (Fig. 3).
INSTALLING AND ADJUSTING THE
D-HANDLE
Grip
1. Push the D-handle down onto the shaft
housing so that the handle slants towards
the powerhead (Fig. 1). The squared bolt
hole in the handle is to the right.
Wing
Nut
Fig. 3
Bolt
Washer
Fig. 1
2. Insert the shoulder bolt into the squared hole
in the handle. Place the washer on the bolt,
and screw the wing nut onto the bolt.
3. Rotate the D-handle to place the grip above
the top of the shaft housing.
4. While holding the unit in the operating
position (Fig. 2), position the D-handle to the
location that provides you the best grip.
Fig. 2
9
ASSEMBLY INSTRUCTIONS
3. Install a screw into the hole from the bottom
INSTALLING THE CUTTING
ATTACHMENT SHIELD
Use the following instructions if the cutting
attachment shield on your unit is not installed.
of the cutting attachment shield and screw it
into the nut installed in step #2 (Fig 6). Do
not tighten.
WARNING: Never operate the
trimmer without the cutting
attachment shield in place to
prevent serious personal injury.
1. Slide the cutting attachment shield into the
shield mount on the cutting attachment.
Align the screw holes in the shield with the
holes in the cutting attachment (Fig. 4).
Cutting Attachment
Shaft Housing
Screws
Shield
Fig. 6
4. Repeat steps 2 and 3 until all three screws
have been started, then tighten screws
securely with a Phillips head screwdriver.
Shield Mount
Cutting Attachment
Fig. 4
2. Place a hex lock nut into one of the three
recessed holes on the top of the cutting
attachment shield (Fig 5).
Cutting Attachment
Shield
Recessed Holes
Hex Lock Nut
Fig. 5
10
OIL AND FUEL INFORMATION
Thoroughly mix the proper
ratio of 2-cycle engine oil with
unleaded gasoline in a separate
OIL AND FUEL MIXING
INSTRUCTIONS
Old and/or improperly mixed fuel are the
fuel can. Use a 32:1 fuel/oil ratio. Do not mix
them directly in the engine fuel tank. See the
table below for specific gas and oil mixing
ratios.
main reasons for the unit not running
properly. Be sure to use fresh, clean
unleaded fuel. Follow the instructions carefully
for the proper fuel/oil mixture.
NOTE: One gallon (3.8 liters) of unleaded
gasoline mixed with one 4 oz.
Definition of Blended Fuels
(120 ml.) bottle of RYOBI 2 CYCLE OIL
makes a 32:1 fuel/oil ratio.
Today's fuels are often a blend of gasoline and
oxygenates such as ethanol, methanol or MTBE
(ether). Alcohol-blended fuel absorbs water. As
little as 1% water in the fuel can make fuel and
oil separate. It forms acids when stored. When
using alcohol-blended fuel, use fresh fuel (less
than 60 days old).
+
Using Blended Fuels
UNLEADED GAS
RYOBI 2 CYCLE OIL
If you choose to use a blended fuel, or its use is
unavoidable, follow recommended precautions.
1 US. GALLON
(3.8 LITERS)
1 LITER
4.0 FL. OZ.
(120 ml)
+
•
•
•
•
Always use fresh fuel mix per your operator's
manual.
Use the fuel additive STA-BIL® or an
equivalent.
+ 30 ml
=
MIXING RATIO - 32:1
Always agitate the fuel mix before fueling the
unit.
WARNING: Gasoline is extremely
flammable. Ignited Vapors may
explode. Always stop the engine and
allow it to cool before filling the fuel
tank. Do not smoke while filling the
tank. Keep sparks and open flames
at a distance from the area.
Drain the tank and run the engine dry before
storing the unit.
Using Fuel Additives
The use of fuel additives, such as STA-BIL® Gas
Stabilizer or an equivalent, will inhibit corrosion
and minimize the formation of gum deposits.
Using a fuel additive can keep fuel from forming
harmful deposits in the carburetor for up to six
(6) months. Add 0.8 oz. (23 ml.) of fuel additive
per gallon of fuel according to the instructions
on the container. NEVER add fuel additives
directly to the unit's fuel tank.
WARNING: Remove fuel cap slowly
to avoid injury from fuel spray. Never
operate the unit without the fuel cap
securely in place.
WARNING: Add fuel in a clean, well
ventilated area outdoors. Wipe up
any spilled fuel immediately. Avoid
creating a source of ignition for spilt
fuel. Do not start the engine until fuel
vapors dissipate.
CAUTION: For proper engine
operation and maximum reliability,
pay strict attention to the oil and fuel
mixing instructions on the 2-cycle oil
container. Using improperly mixed
fuel can severely damage the
engine.
NOTE: Dispose of the old fuel/oil mix in
accordance to Federal, State, and
Local regulations.
11
STARTING/STOPPING INSTRUCTIONS
5. With the unit on the ground, squeeze the
STARTING INSTRUCTIONS
throttle control and pull starter rope briskly
(Fig. 9). Continue pulling until the engine
sounds as though it wants to run,
(normally 2 to 5 pulls).
WARNING: Avoid accidental
starting. Be in the starting position
when pulling the starter rope
(Fig. 9). The operator and unit must
be in a stable position while starting
to avoid serious personal injury.
NOTE: Squeeze the throttle control until the
engine has started and warmed up.
6. Place the choke lever in the PARTIAL choke
1. Mix gas with oil. Fill fuel tank with fuel/oil
mixture. See Oil and Fuel Mixing
Instructions Pg. 11.
position (B) (Fig. 8).
7. Pull starter rope briskly 1 to 3 times to start
the engine (Fig. 9).
2. Put the On/Off Stop Control in the ON
position (Fig. 7).
ON/OFF STOP CONTROL
Starter Rope
Throttle Control
Fig. 9
8. If the engine does not start, repeat steps
4 through 7.
Fig. 7
3. Fully press and release primer bulb 5 to 7
times. Fuel should be visible in the bulb
(Fig. 8).
NOTE: If the engine floods while trying to
start, place the choke lever in the
RUN position (C). Squeeze the throttle
control. Pull the starter rope briskly.
The engine should start within three (3)
to eight (8) pulls.
Partial Choke
Position (B)
Full Choke
Position (A)
Run
Position (C)
9. Squeeze the throttle control to warm up
engine for 5 to 10 seconds. Place the choke
lever in the RUN position (C) (Fig. 8).
NOTE: Choking is unnecessary when starting
a warm engine. Put the On/Off Stop
Control in the ON position (Fig. 7), and
start in with the choke in the PARTIAL
position (B) (Fig. 8).
Choke Lever
Primer Bulb
WARNING: Operate this unit only
in a well ventilated area outdoors.
Carbon monoxide exhaust fumes
can be lethal in a confined area.
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control
(Fig. 9). Allow the engine to cool down
by idling.
Fig. 8
4. Place the choke lever in the FULL choke
position (A) (Fig. 8).
2. Put the On/Off Stop Control in the OFF
position (Fig. 7).
12
OPERATING INSTRUCTIONS
HOLDING THE TRIMMER
ADJUSTING TRIMMING LINE LENGTH
The Bump Head™ cutting attachment allows
you to release trimming line without stopping
the engine. To release more line, lightly tap the
cutting attachment on the ground (Fig. 11)
while operating the trimmer at high speed.
WARNING: Always wear eye,
hearing, foot and body protection to
reduce the risk of injury when
operating this unit.
Before operating the unit, stand in the operating
position (Figs. 10). Check for the following:
NOTE: Always keep the trimming line fully
extended. Line release becomes more
difficult as cutting line becomes
shorter.
•
•
•
The operator is wearing eye protection and
proper clothing.
The right arm is slightly bent, and the hand is
holding the shaft grip.
The left arm is straight, and the hand is
holding the handle.
•
•
The unit is below waist level.
The cutting attachment is parallel to the
ground and easily contacts the vegetation to
be cut without the operator having to bend
over.
Fig. 11
Each time the head is bumped, about 1 in.
(25.4 mm.) of trimming line is released. A blade
in the cutting attachment shield will cut the line
to the proper length if excess line is released.
For best results, tap the Bump Head™ on bare
ground or hard soil. If line release is attempted
in tall grass, the engine may stall. Always keep
the trimming line fully extended. Line release
becomes more difficult as the cutting line
becomes shorter.
NOTE: Do not rest the Bump Head™ on
Fig. 10
the ground.
CAUTION: Do not remove or alter
the line cutting blade assembly.
Excessive line length will make the
clutch overheat. This may lead to
serious personal injury or damage to
the unit.
Some line breakage will occur from:
•
•
•
•
Entanglement with foreign matter
Normal line fatigue
Attempting to cut thick, stalky weeds
Forcing the line into objects such as walls or
fence posts
13
OPERATING INSTRUCTIONS
TIPS FOR BEST TRIMMING RESULTS
DECORATIVE TRIMMING
•
The correct angle for the cutting attachment
Decorative trimming is accomplished by
removing all vegetation around trees, posts,
fences, etc.
Rotate the whole unit so that the cutting
attachment is at a 30° angle to the ground
(Fig. 12).
is parallel to the ground.
•
Do not force the cutting attachment. Allow
the tip of the line to do the cutting (especially
along walls). Cutting with more than the tip
will reduce cutting efficiency and may
overload the engine.
•
•
Cut grass over 8 in. (200 mm.) by working
from top to bottom in small increments to
avoid premature line wear or engine drag.
Cut from right to left whenever possible.
Cutting to the left improves the unit's cutting
efficiency. Clippings are thrown away from
the operator.
•
Slowly move the trimmer into and out of the
cutting area at the desired height. Move
either in a forward-backward or side-to-side
motion. Cutting shorter lengths produces the
best results.
•
•
Trim only when grass and weeds are dry.
Fig. 12
The life of your cutting line is dependent
upon;
•
Following the previous trimming
techniques
•
•
What vegetation is being cut
Where it’s being cut
For example, the line will wear faster when
trimming against a foundation wall as opposed
to trimming around a tree.
MAINTENANCE AND REPAIR INSTRUCTIONS
WARNING: Never do maintenance
or repairs with unit running. Always
do maintenance and repairs on a
cool unit. Disconnect spark plug wire
to ensure the unit will not start.
NOTE: Some maintenance procedures may
require special tools or skills. If you
are unsure about these procedures
take your unit to an authorized service
dealer.
MAINTENANCE SCHEDULE
These required maintenance procedures should
be performed at the frequency stated in the
table. They should also be included as part of
any seasonal tune-up.
FREQUENCY
MAINTENANCE REQUIRED
REFER TO:
Before Starting Engine Fill fuel tank with correct oil and fuel mixture.
Page 11
Page 18
Page 20
Every 10 Hours
Every 50 Hours
Clean and re-oil air filter.
Check spark plug condition and gap.
14
MAINTENANCE AND REPAIR INSTRUCTIONS
LINE INSTALLATION
Shaft
Always use genuine Ryobi 0.080 in. (2.03 mm.)
replacement line. Larger line may make the
engine overheat or fail.
Outer Spool
WARNING: Do not use metal
reinforced line.
Inner Reel
Spring
There are two methods to replace the trimming
line.
• Wind the inner reel with new line
• Install a prewound inner reel
Fig. 14
NOTE: Replacement line Part # 610375,or a
prewound reel, Part # 153577 can be
purchased from your local authorized
dealer.
4. Use a clean cloth to clean the the inner reel,
spring, shaft, and inner surface of the outer
spool (Fig. 15).
Winding the Existing Inner Reel
1. Hold the outer spool with one hand and
remove the Bump Knob™ by turning
counterclockwise (Fig. 13). Inspect the bolt
inside the Bump Knob™ to make sure it will
move freely. Replace if damaged.
NOTE: A Bump Knob™, Part # 153066 can
be purchased from your local
authorized dealer.
Fig. 15
5. Check the indexing teeth on the inner
reel and outer spool for wear (Fig. 16).
If necessary, remove burrs or replace
the reel and spool.
Bump Knob™
NOTE: A cutting attachment head assembly,
Part # 180897 can be purchased from
your local authorized dealer.
Indexing Teeth
Fig. 13
2. Remove the inner reel from the outer spool
(Fig. 14).
3. Remove spring from the inner reel (Fig. 14).
NOTE: A replacement spring, Part # 610317
can be purchased from your local
authorized dealer.
Fig. 16
15
MAINTENANCE AND REPAIR INSTRUCTIONS
5. Take approximately 25 feet (7.6 m) of new
0.080 in. (2.03 mm.) trimming line, loop it into
two equal lengths. Insert each end of the line
through one of the two holes in the inner reel
(Fig. 17). Pull the line through the inner reel
so that the loop is as small as possible.
7. Insert the ends of the line into the two
holding slots (Fig. 19).
NOTE: Always use the correct line length
when installing trimming line on the
unit. The line may not release properly
if the line is too long.
Holding Slots
Fig. 19
8. Place the spring in the inner reel.
NOTE: The spring must be assembled on
the inner reel before reassembling
the cutting attachment.
9. Insert the ends of the line through the eyelets
in the outer spool and place inner reel inside
the outer spool (Fig. 20).
Fig. 17
10.Push the inner reel and outer spool together.
While holding the inner reel and outer spool,
grasp the ends and pull firmly to release the
line from the holding slots in the spool.
6. Wind the lines in tight even layers, onto the
reel (Fig. 18). Wind the line in the direction
indicated on the inner reel. Place your index
finger between the two lines to stop the lines
from overlapping. Do not overlap the ends
of the line.
NOTE: Failure to wind the line in the direction
indicated will cause the cutting head
to operate incorrectly.
Fig. 20
11.Hold the inner reel in place and install the
Bump Knob™ by turning clockwise. Tighten
securely.
Fig. 18
16
MAINTENANCE AND REPAIR INSTRUCTIONS
Installing a Prewound Reel
AIR FILTER MAINTENANCE
1. Hold the outer spool with one hand and
remove the Bump Knob™ by turning it
counterclockwise (Fig. 13, Pg. 15). Inspect
the bolt inside the Bump Knob™ to make
sure it will move freely. Replace the Bump
Knob™ if damaged.
Removing the Air Filter/Muffler Cover
WARNING: To avoid serious
personal injury, always turn your
trimmer off and allow it to cool
before you clean or do any
maintenance on it.
2. Remove the inner reel from the outer spool
(Fig. 14, Pg. 15).
1. Place the choke lever in the PARTIAL choke
3. Remove the spring from the old inner reel
(Fig. 14, Pg. 15).
position (B)
.
NOTE: The choke lever must be in the
PARTIAL choke position (B) (Fig. 21)
to remove the air filter/muffler cover.
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on
the new inner reel before reassembling
the cutting attachment.
2. Remove the four (4) screws securing the
air filter/muffler cover (Fig. 21). Use a flat
blade or T20 Torx bit screwdriver.
5. Insert the ends of the line through the eyelets
in the outer spool (Fig. 20, Pg. 16).
6. Place the new inner reel inside the outer
spool (Fig. 14, Pg.15). Push the inner reel
and outer spool together. While holding the
inner reel and outer spool, grasp the ends
and pull firmly to release the line from the
holding slots in the spool.
Choke Lever
Partial Choke
Position (B)
7. Hold the inner reel in place and install the
Bump Knob™ by turning clockwise. Tighten
securely.
Screws
Screws
Fig. 21
3. Pull the cover from the engine. Do not force.
17
MAINTENANCE AND REPAIR INSTRUCTIONS
4. Apply enough clean SAE 30 oil to lightly coat
the filter (Fig. 24).
Cleaning the Air Filter
WARNING: To avoid serious
personal injury, always turn your
trimmer off and allow it to cool
before you clean or do any
maintenance on it.
Clean and re-oil the air filter every 10 hours of
operation. It is an important item to maintain.
Not maintaining the air filter will VOID the
warranty.
1. Remove air filter/muffler cover. See
Removing the Air filter/Muffler Cover,
Pg. 17.
Fig. 24
2. Remove the air filter from behind the
air filter/muffler cover (Fig. 22).
5. Squeeze the filter to spread and remove
excess oil (Fig. 25).
Air Filter
Fig. 25
6. Replace the air filter in the
air filter/muffler cover (Fig. 22).
Fig. 22
3. Wash the filter in detergent and water
(Fig. 23). Rinse the filter thoroughly. Squeeze
out excess water. Allow it to dry completely.
NOTE: Operating the unit without the air filter
and air filter/muffler cover assembly,
will VOID the warranty.
Reinstalling the Air Filter/Muffler
Cover
1. Place the air filter/muffler cover over
the back of the carburetor and muffler.
NOTE: The choke lever must be in the
PARTIAL choke position (B)
(Fig. 21, Pg. 17) to install the
air filter/muffler cover.
2. Insert the four (4) screws into the holes in the
air filter/muffler cover and tighten. Do not
over tighten.
Fig. 23
18
MAINTENANCE AND REPAIR INSTRUCTIONS
CARBURETOR ADJUSTMENT
Idle Speed Screw
The idle speed of the engine is adjustable
through the Air filter/Muffler cover (Fig. 26).
NOTE: Careless adjustments can seriously
damage your unit. An authorized
service dealer should make carburetor
adjustments.
Check Fuel Mixture
Old and/or improperly mixed fuel is usually the
reason for the unit not running properly. Drain
and refill the tank with fresh, properly mixed fuel
prior to making any adjustments. Refer to
Oil and Fuel Information Pg. 11.
Fig. 26
3. Turn the idle speed screw counterclockwise
1/8 of a turn at a time (as needed), to reduce
idle speed.
Clean Air Filter
The condition of the air filter is important to the
operation of the unit. A dirty air filter will restrict
air flow and change the air/fuel mixture. This is
often mistaken for an out of adjustment
carburetor. Check the condition of the air filter
before adjusting the idle speed screw. Refer to
Air Filter Maintenance Pg. 18.
Checking the fuel mixture, cleaning the air filter,
and adjusting the idle speed screw should solve
most engine problems.
If not and:
•
The engine will not idle,
•
The engine hesitates or stalls on
acceleration,
Adjust Idle Speed Screw
•
There is a loss of engine power,
have the carburetor adjusted by an authorized
service dealer.
WARNING: The cutting attachment
will be spinning during idle speed
adjustments. Wear protective
clothing and observe all safety
instructions to prevent serious
personal injury.
If after checking the fuel mixture and cleaning
the air filter the engine still will not idle, adjust
the idle speed screw as follows.
1. Start the engine and let it run at a high idle
for a minute to warm up.
2. Release the throttle trigger and let the engine
idle. If the engine stops, insert a small
phillips or flat blade screwdriver into the hole
in the air filter/muffler cover (Fig. 26). Turn the
idle speed screw in, clockwise, 1/8 of a turn
at a time (as needed) until the engine idles
smoothly.
19
MAINTENANCE AND REPAIR INSTRUCTIONS
REPLACING THE SPARK PLUG
Use a Champion RDJ7Y spark plug
ACCESSORIES/REPLACEMENT
PARTS
(or equivalent). The correct air gap is 0.020 in.
(0.5 mm.). Remove the plug after every 50 hours
of operation and check its condition.
2-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . 147543
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . 610311
Replacement Line . . . . . . . . . . . . . . . . . . 610375
Replacement Line Cartridge . . . . . . . . . . . 153577
Inner Reel Spring . . . . . . . . . . . . . . . . . . . 610317
Bump Head Knob Assembly. . . . . . . . . . . 153066
Head Assembly . . . . . . . . . . . . . . . . . . . . 180897
Fuel Cap. . . . . . . . . . . . . . . . . . . . . . . . . . 180000
Shoulder Strap . . . . . . . . . . . . . . . . . . . . . 682075
1. Stop the engine and allow it to cool. Grasp
the plug wire firmly and pull it from the spark
plug.
2. Clean dirt from around the spark plug.
Remove the spark plug from the cylinder
head by turning a 5/8 in. socket
counterclockwise.
3. Replace cracked, fouled or dirty spark plug.
Set the air gap at 0.020 in. (0.5 mm.) using a
feeler gauge (Fig. 27).
CAUTION: Do not sand blast,
scrape, or clean electrodes. Grit in
the engine could damage the
cylinder.
4. Install a correctly gaped spark plug in the
cylinder head. Tighten by turning the 5/8 in.
socket clockwise until snug.
If using a torque wrench torque to;
110-120 in.•lb. (12.3-13.5 N•m).
Do not over tighten.
0.020 in.
(0.5 mm.)
Fig. 27
20
CLEANING AND STORAGE
CLEANING
TRANSPORTING
•
•
•
Allow the engine to cool before transporting.
WARNING: To avoid serious
Secure the unit while transporting.
Tighten fuel cap before transporting.
personal injury, always turn your
trimmer off and allow it to cool
before you clean or do any
maintenance on it.
Use a small brush to clean off the outside of the
unit. Do not use strong detergents. Household
cleaners that contain aromatic oils such as pine
and lemon, and solvents such as kerosene, can
damage plastic housing or handle. Wipe off any
moisture with a soft cloth.
STORAGE
•
Never store the unit with fuel in the tank
where fumes may reach an open flame or
spark.
•
•
Allow the engine to cool before storing.
Store the unit locked up to prevent
unauthorized use or damage.
•
•
Store the unit in a dry, well ventilated area.
Store the unit out of the reach of children.
LONG TERM STORAGE
If the unit will be stored for an extended time,
use the following storage procedure.
1. Drain all fuel from the fuel tank and drain into
a container with the same 2-cycle fuel
mixture. Do not use fuel that has been stored
for more than 60 days. Dispose of the old
fuel/oil mix in accordance to Federal, State,
and Local regulations.
2. Start the engine and allow it to run until it
stalls. This ensures that all fuel has been
drained from the carburetor.
3. Allow the engine to cool. Remove the spark
plug and put 1 oz. (30 ml.) of any high quality
motor oil or 2-cycle oil into the cylinder. Pull
the starter rope slowly to distribute the oil.
Reinstall the spark plug.
NOTE: Remove the spark plug and drain all
of the oil from the cylinder before
attempting to start the trimmer after
storage.
4. Thoroughly clean the unit and inspect for any
loose or damaged parts. Repair or replace
damaged parts and tighten loose screws,
nuts or bolts. The unit is ready for storage.
21
TROUBLESHOOTING
PROBLEM
CAUSE
ACTION
Turn switch to ON
Fill fuel tank
Engine will not start
Ignition switch is OFF
Empty fuel tank
Primer bulb wasn't pressed
enough
Press primer bulb fully and slowly
5-7 times
Engine flooded
Use starting procedure with choke
lever in the RUN position Pg. 12
Old or Improperly Mixed Fuel
Drain fuel tank / Add fresh fuel
mixture
Fouled spark plug
Replace or clean the spark plug
Replace or clean the air filter
Engine will not idle
Low idle speed
Air Filter is Plugged
Old or Improperly Mixed Fuel
Drain fuel tank / Add fresh fuel
mixture
Improper carburetor
adjustment
Adjust per instruction Pg. 19
Engine will not accelerate Old or Improperly Mixed Fuel
Drain fuel tank / Add fresh fuel
mixture
Improper carburetor
adjustment
Take to an authorized service
dealer for carburetor adjustment
Engine lacks power or
stalls when cutting
Cutting head bound with grass Stop the engine and clean the
cutting attachment
Dirty air filter
Clean or replace the air filter
Old or Improperly Mixed Fuel
Drain fuel tank / Add fresh fuel
mixture
Improper carburetor
adjustment
Take to an authorized service
dealer for carburetor adjustment
Cutting head will not
advance line
Cutting head bound with grass Stop the engine and clean cutting
attachment
Cutting head out of line
Inner reel bound up
Cutting head dirty
Line welded
Refill with new line
Replace the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded
section and rewind the line
Line twisted when refilled
Not enough line is exposed
Disassemble and rewind the line
Push the Bump Knob and pull out
line until 4 in. (102 mm.) of line is
outside of the cutting attachment
22
SPECIFICATIONS
ENGINE
Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25 in. (31.75 mm.)
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.9 cu in. (31 cc.)
Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,600 - 8,000 rpm
Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,400 - 4,400 rpm
Ignition Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Slide Switch
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.020 in. (0.5 mm.)
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel/Oil Mixture
Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32:1
Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm, All-Position
Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto Rewind
Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baffled with Guard
Throttle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Spring Return
Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 oz. (530 ml.)
Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HD Polyethylene
DRIVE SHAFT & STRING HEAD
Drive Shaft Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steel Tube
Throttle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Finger-Tip Trigger
Unit Weight (No fuel, with string cutting head, string guard and loop handle) . . . . . 12.25 lbs. (5.6 kg.)
Cutting Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Head
Shoulder Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optional
Line Spool Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 in. (76.2 mm.)
Trimming Line Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.080 in. (2.03 mm.)
Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 in. (40.6 cm.)
23
NOTES
24
CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board and Ryobi
MANUFACTURER'S WARRANTY COVERAGE:
Outdoor Products (ROP), are pleased to explain
the emission control system warranty on your
1995 and later small off-road engine. In
California, new small off-road engines must
be designed, built and equipped to meet the
State's stringent anti-smog standards. ROP
must warrant the emission control system on
your small off-road engine for the periods of time
listed below provided there has been no abuse,
neglect or improper maintenance of
•
The warranty period begins on the date the
engine or equipment is delivered to the retail
purchaser.
•
The manufacturer warrants to the initial owner
and each subsequent purchaser, that the engine
is free from defects in material and
workmanship which cause the failure of a
warranted part for a period of two years.
•
•
Repair or replacement of warranted part will be
performed at no charge to the owner at
an Authorized Ryobi Service Center. For the
nearest location, please contact Ryobi at:
1-800-345-8746.
your small off-road engine.
Your emission control system may include parts
such as the carburetor or fuel injection system,
the ignition system, and catalytic converter. Also
included may be hoses, belts, connectors and
other emission-related assemblies.
Any warranted part which is not scheduled for
replacement, as required maintenance which is
scheduled only for regular inspection to the
effect of "Repair or replace as necessary" is
warranted for the warranty period. Any
Where a warrantable condition exists, ROP will
repair your small off-road engine at no cost to
you including diagnosis, parts and labor.
warranted part which is scheduled for
replacement as required maintenance will be
warranted for the period of time up to the first
scheduled replacement point for that part.
The 1995 and later small off-road engines are
warranted for two years. If any emission-related
part on your engine is defective, the part will
be repaired or replaced by ROP.
•
•
The owner will not be charged for diagnostic
labor which leads to the determination that a
warranted part is defective, if the diagnostic
work is performed at an Authorized Ryobi
Service Center.
OWNER'S WARRANTY RESPONSIBILITIES:
•
As the small off-road engine owner, you are
responsible for the performance of the
required maintenance listed in your
The manufacturer is liable for damages to other
engine components caused by the failure of a
warranted part still under warranty.
operator's manual. ROP recommends that
you retain all receipts covering maintenance
on your small off-road engine, but ROP
cannot deny warranty solely for the lack of
receipts or for your failure to ensure the
performance of all scheduled maintenance.
•
•
Failures caused by abuse, neglect or improper
maintenance are not covered under warranty.
The use of add-on or modified parts can be
grounds for disallowing a warranty claim. The
manufacturer is not liable to cover failures or
warranted parts caused by the use of add-on or
modified parts.
•
•
As the small off-road engine owner, you
should however be aware that ROP may
deny you warranty coverage if your small
off-road engine or a part has failed due to
abuse, neglect, improper maintenance or
unapproved modifications.
•
•
In order to file a claim, go to your nearest
Authorized Ryobi Service Center. Warranty
services or repairs will be provided at all
Authorized Ryobi Service Centers.
You are responsible for presenting your
small off-road engine to a Ryobi Authorized
Service Center as soon as a problem exists.
The warranty repairs should be completed in
a reasonable amount of time, not to exceed
30 days.
Any manufacturer approved replacement part
may be used in the performance of any warranty
maintenance or repair of emission related parts
and will be provided without charge to the
owner. Any replacement part that is equivalent
in performance or durability may be used in
non-warranty maintenance or repair and will not
reduce the warranty obligations of the
manufacturer.
If you have any questions regarding your
warranty rights and responsibilities, you
should call 1-800-345-8746.
•
The following components are included in the
emission related warranty of the engine, air
filter, carburetor, primer, fuel lines, fuel pick
up/fuel filter, ignition module, spark plug and
muffler.
25
LIMITED TWO-YEAR WARRANTY
RYOBI OUTDOOR PRODUCTS warrants each new
RYOBI Product for two (2) years according to the
following terms.
ALL IMPLIED WARRANTIES ARE LIMITED IN
DURATION TO THE TWO (2) YEAR WARRANTY
PERIOD OR NINETY (90) DAYS FOR PRODUCTS
USED FOR ANY COMMERCIAL PURPOSE.
ACCORDINGLY, ANY SUCH IMPLIED
This warranty extends to the original retail purchaser
only and commences on the date of original retail
purchase.
WARRANTIES INCLUDING MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR
OTHERWISE, ARE DISCLAIMED IN THEIR
ENTIRETY AFTER THE EXPIRATION OF THE
APPROPRIATE TWO-YEAR OR NINETY DAY
WARRANTY PERIOD. RYOBI’S OBLIGATION
UNDER THIS WARRANTY, IS STRICTLY AND
EXCLUSIVELY LIMITED TO THE REPAIR OR
REPLACEMENT OF DEFECTIVE PARTS, AND
ROP DOES NOT ASSUME OR AUTHORIZE
ANYONE TO ASSUME FOR THEM ANY OTHER
OBLIGATION. SOME STATES DO NOT ALLOW
LIMITATIONS ON HOW LONG AN IMPLIED
WARRANTY LASTS, SO THE ABOVE LIMITATION
MAY NOT APPLY TO YOU.
Any part of the RYOBI Product manufactured or
supplied by RYOBI and found in the reasonable
judgement of RYOBI to be defective in material or
workmanship will be repaired or replaced by an
authorized RYOBI service dealer without charge
for parts and labor.
The RYOBI Product including any defective part
must be returned to an authorized service dealer
within the warranty period. The expense of
delivering the RYOBI Product to the dealer for
warranty work and the expense of returning it back
to the owner after repair or replacement will be paid
for by the owner. RYOBI’s responsibility in respect
to claims is limited to making the required repairs or
replacements and no claim of breach of warranty
shall be cause
for cancellation or rescission of the contract of sale
of any RYOBI Product. Proof of purchase will be
required by the dealer to substantiate any warranty
claim. All warranty work must be performed by an
authorized RYOBI service dealer.
RYOBI ASSUMES NO RESPONSIBILITY FOR
INCIDENTAL, CONSEQUENTIAL OR OTHER
DAMAGES INCLUDING, BUT NOT LIMITED
TO EXPENSE OF RETURNING THE RYOBI
PRODUCT TO AN AUTHORIZED SERVICE
DEALER AND EXPENSE OF DELIVERING IT BACK
TO THE OWNER, MECHANIC’S TRAVEL TIME,
TELEPHONE OR TELEGRAM CHARGES, RENTAL
OF A LIKE PRODUCT DURING THE TIME
WARRANTY SERVICE IS BEING PERFORMED,
TRAVEL, LOSS OR DAMAGE TO PERSONAL
PROPERTY, LOSS OF REVENUE, LOSS OF USE
OF THE PRODUCT, LOSS OF TIME, OR
This warranty is limited to ninety (90) days from
the date of original retail purchase for any RYOBI
Product that is used for rental or commercial
purposes, or any other income-producing purpose.
INCONVENIENCE. SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES,
SO THE ABOVE LIMITATION OR EXCLUSION
MAY NOT APPLY TO YOU.
This warranty does not cover any RYOBI Product
that has been subject to misuse, neglect,
negligence, or accident, or that has been operated
in any way contrary to the operating instructions as
specified in the RYOBI Operator’s Manual. This
warranty does not apply to any damage to the
RYOBI Product that is the result of improper
maintenance or to any RYOBI Product that has
been altered or modified so as to adversely affect
the product's operation, performance or durability
or that has been altered or modified so as to
change its intended use. The warranty does not
extend to repairs made necessary by normal wear
or by the use of parts or accessories which are
either incompatible with the RYOBI Product or
adversely affect its operation, performance or
durability.
This warranty gives you specific legal rights, and
you may also have other rights which vary from
state to state.
This warranty applies to all RYOBI Products
manufactured by RYOBI and sold in the United
States and Canada.
To locate your nearest service dealer dial
1-800-345-8746 in the United States or
1-800-265-6778 in Canada.
In addition, this warranty does not cover:
A. Tune-ups - Spark Plugs, Carburetor
Adjustments, Filters
B. Wear items - Bump Knobs, Outer Spools,
Cutting Line, Inner Reels, Starter Pulley,
Starter Ropes, Drive Belts
RYOBI OUTDOOR PRODUCTS
550 N. 54th Street
Chandler, AZ 85226 U.S.A.
RYOBI CANADA INC.
275 Industrial Rd
Cambridge, Ontario N1R 6K2 CANADA
RYOBI reserves the right to change or improve the
design of any RYOBI Product without assuming any
obligation to modify any product previously
manufactured.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
FOR QUESTIONS CALL 1-800-345-8746 IN U.S.
OR 1-800-265-6778 IN CANADA
OPERATOR’S MANUAL PART NO. 182089
PRINTED IN U.S.A.
REV. A (7708)
9/98
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