Ryobi Outdoor 890r 操作员手册

890r
4-Cycle Gas Trimmer / Brushcutter
OPERATOR’S MANUAL
FOR QUESTIONS, CALL 1-800-345-8746 in U.S. or
1-800-668-1238 in CANADA
www.RyobiOutdoor.com
IMPORTANT MANUAL
DO NOT THROW AWAY
INTRODUCTION
TABLE OF CONTENTS
THANK YOU
I.
California Proposition 65 Warning . . . . . . . . . . . . . . . . 3
Thank you for buying this quality product. This modern
outdoor power tool will provide many hours of useful
service. You will find it to be a great labor-saving device.
This operator’s manual provides you with easy-tounderstand operating instructions. Read the whole
manual and follow all the instructions to keep your new
outdoor power tool in top operating condition.
II.
Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . 3-7
A. Important Safety Information . . . . . . . . . . . . . . . . . 4
B. Safety and International Symbols . . . . . . . . . . . . . 6
C. Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PRODUCT REFERENCES, ILLUSTRATIONS
AND SPECIFICATIONS
All information, illustrations and specifications in this
manual are based on the latest product information
available at the time of printing. We reserve the right to
make changes at any time without notice.
Copyright© 2003 MTD SOUTHWEST INC
All Rights Reserved.
Bump Head™ is a trademark of MTD SOUTHWEST INC.
SplitLine™ is a trademark of MTD SOUTHWEST INC.
SERVICE INFORMATION
Service on this unit both within and after the warranty
period should be performed only by an authorized and
approved service dealer.
• Call 1-800-345-8746 in the United States, or
1-800-668-1238 in Canada, to obtain a list of
authorized service dealers near you
Or
• Go to www.RyobiOutdoor.com on the World Wide
Web for a list of authorized service dealers
DO NOT RETURN THE UNIT TO THE RETAILER.
NOTE: PROOF OF PURCHASE WILL BE REQUIRED
FOR WARRANTY SERVICE.
III. Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . 8-10
A. Install and Adjust the J handle . . . . . . . . . . . . . . . 8
B. Install the Harness . . . . . . . . . . . . . . . . . . . . . . . . . 8
C. Remove and Install the Attachment Shield . . . . . . .8
D. Remove the Cutting Attachment and
Install the Cutting Blade . . . . . . . . . . . . . . . . . . . . .9
E. Remove the Cutting Blade and
Install the Cutting Attachment . . . . . . . . . . . . . . . .10
IV. Oil and Fuel Information . . . . . . . . . . . . . . . . . . . 11-12
A. Recommended Oil Type . . . . . . . . . . . . . . . . . . . .11
B. Adding Oil to the Crankcase . . . . . . . . . . . . . . . . .11
C. Recommended Fuel Type . . . . . . . . . . . . . . . . . . .12
D. Fueling the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . .12
V. Starting/Stopping Instructions . . . . . . . . . . . . . . . . . 13
VI. Operating Instructions . . . . . . . . . . . . . . . . . . . . 14-16
A. Operating the EZ-Link System . . . . . . . . . . . . . . .14
B. Holding the Trimmer . . . . . . . . . . . . . . . . . . . . . . 15
C. Adjusting Trimming Line Length . . . . . . . . . . . . . 15
D. Tips for Best Trimming Results . . . . . . . . . . . . . . 15
E. Decorative Trimming . . . . . . . . . . . . . . . . . . . . . . 16
F. Using the Cutting Blade . . . . . . . . . . . . . . . . . . . . .16
VII. Maintenance and Repair Instructions . . . . . . . . . 17-25
A. Maintenance Schedule . . . . . . . . . . . . . . . . . . . . 17
B. Line Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 17
C. Installing a Prewound Reel . . . . . . . . . . . . . . . . . 19
D. Checking the Oil Level . . . . . . . . . . . . . . . . . . . . . .19
E. Changing the Oil Level . . . . . . . . . . . . . . . . . . . . . .20
F. Air Filter Maintenance . . . . . . . . . . . . . . . . . . . . . 21
G. Carburetor Adjustment . . . . . . . . . . . . . . . . . . . . 21
H. Rocker Arm Clearance . . . . . . . . . . . . . . . . . . . . . .22
I. Replacing the Spark Plug . . . . . . . . . . . . . . . . . . 24
J. Spark Arrestor Maintenance . . . . . . . . . . . . . . . . .24
K. Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
L. Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
M. Long Term Storage . . . . . . . . . . . . . . . . . . . . . . . 25
N. Transporting the Unit . . . . . . . . . . . . . . . . . . . . . . .25
O. Accessories/Replacement Parts . . . . . . . . . . . . . .25
VIII. Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . 26
Make sure you carefully read and understood this
manual before starting or operating this equipment.
THIS PRODUCT IS COVERED BY ONE OR MORE
US PATENTS, OTHER PATENTS PENDING.
IX. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
X. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
XI. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
CONTENTS OF CARTON
•
∆
∆
∆
•
•
•
•
•
•
Model 890r Trimmer/Brushcutter
Large Bump Head Cutting Attachment
4-Tooth Brush Blade
J-Handle and Hardware
Cutting Attachment Shield with Hardware
Shoulder Harness
Locking Rod Tool
Operator's Manual
Product Registration Card
Bottle of 4-Cycle Oil
∆ This item will either be installed on the unit or in the
hardware pack
2
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 state 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 factory equipped with a spark arrestor. If
it requires replacement, ask your local service dealer to install the Accessory Part #180890 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 1-800-668-1238 in CANADA
RULES FOR SAFE OPERATION
The purpose of safety symbols is to attract your
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.
SYMBOL
MEANING
NOTE: Advises you of information or instructions vital
to the operation or maintenance of the
equipment.
SAFETY ALERT SYMBOL: 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.
SYMBOL
MEANING
DANGER: Failure to obey a safety warning
will 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.
WARNING: Failure to obey a safety
warning can result in injury to yourself and
others. Always follow the safety
precautions to reduce the risk of fire,
electric shock and personal injury.
CAUTION: Failure to obey a safety warning
may result in property damage or personal
injury to yourself or to others. Always follow
the safety precautions to reduce the risk of
fire, electric shock and personal injury.
3
RULES FOR SAFE OPERATION
READ ALL INSTRUCTIONS
BEFORE OPERATING
• 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 do so can result in personal
injury to the operator and bystanders, as well as
damage to the unit.
• Use only 0.095 inch (2.41 mm) diameter Genuine
Factory Parts™ replacement line. Never use metalreinforced line, wire or rope. These can break off and
become dangerous projectiles.
• Be aware of the risk of injury to the head, hands and feet.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments
or repairs before using unit.
• Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.
• Move the unit at least 30 feet (9.1 m) from the fueling
source and site before starting the engine. Do not
smoke. Keep sparks and open flames away from the
area while adding fuel or operating the unit.
WHILE OPERATING
• 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 outdoor area.
• Wear safety glasses or goggles that are marked as
meeting ANSI Z87.1-1989 standards. Also wear
ear/hearing protection when operating this unit. Wear
a face or dust mask if the operation is dusty.
• Wear heavy, long pants, boots and gloves. Do not
wear loose clothing, jewelry, short pants, sandals or
go barefoot. Secure hair above shoulder level.
• 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.
• This unit has a clutch. The cutting attachment remains
stationary when the engine is idling. If it does not, have
the unit adjusted by an authorized service technician.
• Adjust the J-handle to your size to provide the best
grip.
• Clear the area to be cut before each use. Remove all
objects such as rocks, broken glass, nails, wire or
string. They 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-foot (15 m.) radius;
there still may be a risk to bystanders from thrown
objects. Bystanders should be encouraged to wear
eye protection. If you are approached, stop the engine
and cutting attachment immediately.
• Be sure the cutting attachment is not in contact with
anything before starting the unit.
SAFETY WARNINGS FOR GAS TRIMMERS
• Do not overreach. Always keep proper footing and
balance.
WARNING: Gasoline is highly flammable, and
its vapors can explode if ignited. Take the
following precautions:
• Store fuel only in containers specifically designed and
approved for the storage of such materials.
• 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.
• Add fuel in a clean, well-ventilated outdoor area where
there are no sparks or flames. Slowly remove the fuel
cap only after stopping engine. Do not smoke while
fueling. Wipe up any spilled fuel from the unit
immediately.
4
• Use the unit only in daylight or good artificial light.
• 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
Starting/Stopping Instructions.
• Use the right tool. Only use this tool for the purpose
intended.
• Always hold the unit with both hands when operating.
Keep a firm grip on both the front and rear handle or grips.
• 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.
• Do not touch the engine or muffler. These parts get
extremely hot from operation. They remain hot for a
short time after you turn off 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 you are not cutting.
• Always stop the engine when cutting is delayed or
when walking from one cutting location to another.
• 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.
RULES FOR SAFE OPERATION
• Stop and switch the engine to off for maintenance,
repair, or for changing the cutting attachment or other
attachments.
• Use only Genuine Factory Parts™ replacement parts
and accessories for this unit. These are available from
your authorized service dealer. Use of any
unauthorized parts or accessories could lead to
serious injury to the user, or damage to the unit, and
void your warranty.
• Keep unit clean of vegetation and other materials.
They may become lodged between the cutting
attachment and shield.
• 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.
WHILE OPERATING WITH CUTTING BLADE
• Read and understand all safety warnings before
operating this unit.
• If you strike or become entangled with a foreign
object, stop the engine immediately and check for
damage. Have any damage repaired before attempting
further operations. Do not operate unit with a bent,
cracked or dull blade. Discard blades that are bent,
warped, cracked or broken.
• Do not sharpen the cutting blade. Sharpening the blade
can cause the blade tip to break off while in use. This can
result in severe personal injury. Replace the blade.
• Do not use the cutting blade for edging or as an
edger, severe personal injury to yourself or others can
occur. Use the cutting blade only for the purpose as
described in this manual.
• Stop the engine IMMEDIATELY if you feel excessive
vibration. Vibration is a sign of trouble. Inspect thoroughly
for loose nuts, bolts or damage before continuing. Repair
or replace affected parts as necessary.
After Use
• Always use the shoulder harness when using the
brush blade accessory.
• Clean cutting blades with a household cleaner to
remove any gum buildup. Oil the blade with machine
oil to prevent rust.
• Keep the J-handle between the operator and cutting
attachment or blade at all times.
• Lock up and store the cutting blade in an appropriate area
to protect the blade from unauthorized use or damage.
• NEVER cut with the cutting blade located over 30
inches (76 cm) or more above the ground level.
OTHER SAFETY WARNINGS
• Blade thrust may occur when the spinning blade
contacts an object that it does not immediately cut.
Blade thrust can be violent enough to cause the unit
and/or operator to be propelled in any direction , and
possibly 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 operation with the brush blade, do not cut
anything thicker than 1/2 inch or a violent kickback
could occur.
• 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 the throttle trigger
is released. Maintain proper control until the blade has
completely stopped rotating.
• Never store the unit, with fuel in the tank, inside a
building where fumes may reach an open flame or
spark.
• Allow the engine to cool before storing or transporting.
Be sure to secure the unit while transporting.
• Store the unit in a dry area, locked up or up high
to prevent unauthorized use or damage, out of the
reach of children.
• Never douse or squirt the unit with water or any other
liquid. Keep handles dry, clean and free from debris.
Clean after each use. See the Cleaning and Storage
instructions.
• 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.
SAVE THESE INSTRUCTIONS
• Do not run the unit at high speed when not cutting.
5
RULES FOR SAFE OPERATION
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
SYMBOL
MEANING
• SAFETY ALERT SYMBOL
• ON/OFF STOP CONTROL
Indicates danger, warning or caution.
May be used in conjunction with other
symbols or pictographs.
OFF or STOP
• WARNING - READ
OPERATOR'S MANUAL
• THROWN OBJECTS AND
ROTATING CUTTER CAN
CAUSE SEVERE INJURY
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.
WARNING: Do not operate without
the cutting attachment shield in place.
Keep away from the rotating cutting
attachment.
• WEAR EYE AND HEARING
PROTECTION
• HOT SURFACE WARNING
WARNING: Thrown objects and loud
noise can cause severe eye injury and
hearing loss. Wear eye protection
meeting ANSI Z87.1 standards and ear
protection when operating this unit.
Use a full face shield when needed.
Do not touch a hot muffler, gear housing
or cylinder. You may get burned. These
parts get extremely hot from operation.
They remain hot for a short time after the
unit is turned off.
• SHARP BLADE
•KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders,
especially children and pets, at least
50 feet (15 m) from the operating area.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
WARNING: Sharp blade on cutting
attachment shield. To prevent serious
injury, do not touch line cutting blade.
• BRUSHCUTTERS • REPLACE
DULL BLADE
Do not sharpen the cutting blade.
Sharpening the blade can cause the
blade tip to break off while in use. This
can result in severe personal injury.
• OIL
Refer to operator's manual for the
proper type of oil.
• ON/OFF STOP CONTROL
ON / START / RUN
6
•TRIMMER/BRUSHCUTTER
SAFETY
WARNING: Thrown objects and
rotating cutter can cause severe injury.
Keep bystanders, especially children
and pets, at least 50 feet (15 m) away
from the cutting area. The cutting
attachment shield must be used when
using the trimmer cutting attachment.
RULES FOR SAFE OPERATION
Spark Arrestor
KNOW YOUR UNIT
APPLICATIONS
Spark Plug
Muffler
As a trimmer:
• Cutting grass and light weeds
•
Edging
Muffler Guard
• Decorative trimming around trees, fences, etc.
As a brushcutter:
• Cutting weeds and light bush of up to 1/2 inch
in diameter
Other optional accessories may be used with the
890r. Refer to Operating the EZ-Link System for a
list of add-ons.
Fuel Cap
Starter Rope Grip
Shaft Grip
Throttle
Lock-Out
On/Off Stop Control
Throttle
Control
Shoulder Strap Clip
Spark Plug
J-Handle
EZ-Link™
Blade Shield /
Shield Mount
Air Filter Cover
Choke Lever
Primer Bulb
Shaft
Housing
Brush
Blade
Cutting Attachment
Shield
Gear
Housing
Engine Feet
Cutting Attachment
Oil Fill Plug / Dipstick
Line Cutting Blade
7
ASSEMBLY INSTRUCTIONS
On some units, the J-handle may be pre-installed. In this
case you must loosen screws and adjust the handle to fit
the operator. Go to step 5 if the J-handle is pre-installed.
INSTALL AND ADJUST THE J-HANDLE
1. Place the J-handle between the top and middle
clamp pieces (Fig. 1).
(4) Screws
J-Handle
Top Clamp
Middle Clamp
INSTALL THE HARNESS
WARNING: Always use the shoulder
harness when using the cutting blade to
avoid serious personal injury.
1. Push the strap through the center of the buckle.
2. Pull the strap over the cross bar and down through
the slot in the buckle (Fig. 4).
3. Put the harness on over head and onto shoulder.
Snap it on to the support fitting (Fig. 5).
4. Adjust length to fit the operator’s size. Pull tab to
lengthen, pull strap to shorten (Fig 6).
Bottom Clamp
Nuts
Fig. 1
2. While holding the three pieces together, install the four
(4) screws through the top clamp and into middle clamp.
NOTE: The holes in the top and middle clamp will line up
only when assembled correctly.
Fig. 4
3. Place the clamps and the J-handle over the shaft
housing and onto the bottom clamp.
4. Hold each hex nut in the bottom clamp recess with a
finger. Start screws with a large Phillips screwdriver.
Do not tighten until you make the handle adjustment.
5. Slide the J-handle in or out until the arrow/white line on
the decal touches the clamp assembly (Fig. 2). You must
first loosen the screws if the handle is pre-installed.
Support Fitting
Fig. 5
Decal
Fig. 2
6. While holding the unit in the operating position (Fig. 3),
position the J-handle to the location that provides you
the best grip.
Fig. 6
REMOVE AND INSTALL THE CUTTING
ATTACHMENT SHIELD
Remove the cutting attachment shield when
using the unit as a brushcutter
WARNING: The cutting attachment shield
should NOT be installed when operating
the unit with a blade. Remove the cutting
attachment shield before removing or
installing the blade.
Fig. 3
7. Tighten the clamp screws evenly, until the J-handle
is secure.
8
Remove the cutting attachment shield from the shield
mount by removing the three (3) screws with a flat blade
screwdriver (Fig. 7). Store parts for future use.
ASSEMBLY INSTRUCTIONS
Cutting
Attachment
Shield
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 9).
(3) Screws
Gear Housing
3. While holding the locking rod, remove the cutting
attachment by turning it clockwise off of the output shaft
(Fig. 10). Store the cutting attachment for future use.
NOTE: The blade retainer under the cutting attachment
will be used when installing the cutting blade.
Shield Mount
Fig. 7
Install the cutting attachment shield when using
the unit as a grass trimmer
WARNING: To avoid serious personal
injury, the cutting attachment shield MUST
be in place at all times while operating the
unit as a grass trimmer.
Fig. 9
Cutting Attachment
Install the cutting attachment shield on the shield mount
by inserting the three (3) screws into the shield mount.
Tighten securely with a flat blade screwdriver (Fig. 7).
REMOVE THE CUTTING ATTACHMENT AND
INSTALL THE CUTTING BLADE
NOTE: To make cutting blade removal and installation easier,
place the unit on the ground or on a work bench.
Locking Rod
Slot
Locking Rod
Fig. 10
Remove the Cutting Attachment Shield
See Remove and Install the Cutting Attachment Shield.
Install the Cutting Blade
Remove the Cutting Attachment
WARNING: The gear housing gets hot with
use. It can result in injury to the operator.
The housing remains hot for a short time
even after the unit is turned off. Do not
touch the gear housing until it has cooled.
1. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the shaft bushing hole (Fig. 8).
WARNING: To avoid serious personal
injury, always wear gloves while handling or
installing the blade.
4. Place the cutting blade on the output shaft bushing
(Fig. 11).
Blade Retainer
Nut
Cutting
Blade
Output Shaft
Shaft Bushing Hole
Shield
Mount
Pilot Hole
Locking Rod Slot
Output Shaft
Bushing
Locking Rod
Output Shaft
Bushing
Locking Rod
Fig. 8
Fig. 11
9
ASSEMBLY INSTRUCTIONS
5. Make sure that the cutting blade is centered on the
pilot step and sitting flat against the output shaft
bushing (Fig. 12).
WARNING: If the cutting blade is offcenter, the unit will vibrate and the blade
may fly off, causing possible serious
personal injury.
REMOVE THE CUTTING BLADE AND
INSTALL THE CUTTING ATTACHMENT
WARNING: To avoid serious personal
injury, always wear gloves while handling or
installing the blade.
Remove the Cutting Blade
1. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the bushing hole (Fig. 8).
Pilot Step
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 14).
3. While holding the locking rod, loosen the nut on the
blade by turning it clockwise with a 5/8 inch closedend or socket wrench (Fig. 14).
Fig. 12
Clockwise
6. Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the bushing hole
(Fig. 8).
7. Put the blade retainer and nut on the output shaft.
Make sure that the blade is installed correctly.
8. Tighten nut counterclockwise against the blade while
holding the locking rod:
• If using a torque wrench and an 5/8 inch socket tighten
to: 325 - 335 in•lb, 27 - 28 ft.•lb, 37 - 38 N•m.
• Without a torque wrench, use a 5/8 inch closed-end or
socket wrench, turning the nut until the blade retainer
is snug against the shaft bushing. Make sure that the
blade is installed correctly, then rotate the nut an
additional 1/4 to 1/2 turn counterclockwise (Fig. 13).
Fig. 14
4. Remove the nut, blade retainer and blade. Store the
nut and blade together for future use in a secure
place. Store out of children’s reach.
Install the Cutting Attachment
5. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the shaft bushing hole (Fig. 8).
Place the blade retainer on the output shaft with the flat
surface against the output shaft bushing (Fig. 15). Screw
the cutting attachment counterclockwise onto the output
shaft. Tighten securely.
NOTE: The blade retainer must be installed on the output
shaft in the position shown for the cutting
attachment to work correctly.
Cutting Attachment
Blade Retainer
1/4-1/2 turn
Counterclockwise
Fig. 13
9. Remove the locking rod from the locking rod slot.
Output Shaft
Bushing
Locking Rod
WARNING: To avoid serious personal
injury or damage to the unit, do not start or
operate this unit with the locking rod in the
locking rod slot.
WARNING: Do not sharpen the cutting blade.
Sharpening the blade can cause the blade tip
to break off while in use. This can result in
severe personal injury. Replace the blade.
10
Fig. 15
6. Remove the locking rod.
7. Install the cutting attachment shield. Refer to Remove
and Install the Cutting Attachment Shield.
WARNING: To avoid serious personal injury,
the cutting head guard MUST be in place at
all times while operating the unit as a trimmer.
OIL AND FUEL INFORMATION
DANGER: OVERFILLING OIL CRANKCASE
MAY CAUSE SERIOUS PERSONAL
INJURY. Checking and maintaining the
proper oil level in the crank case cannot is
important and cannot be overemphasized.
Check oil before each use and change as
needed. See Changing the Oil.
2. Place the unit on a flat level surface.
3. Remove the oil plug / dipstick from the crankcase
(Fig. 17).
RECOMMENDED OIL TYPE
Using the proper type and weight of oil in the crankcase
is extremely important. Check the oil before each use
and change the oil regularly. Failure to use the correct
oil, or using dirty oil, can cause premature engine wear
and failure.
Use a high-quality SAE 30 weight oil of API (American
Petroleum Institute) service class SF, SG, SH.
O-Ring
Oil Fill Plug/Dipstick
Oil Fill Hole
ADDING OIL TO CRANKCASE: INITIAL USE
NOTE: This unit is shipped without oil. In order to avoid
damage to the unit, put oil in the crankcase
before attempting to start unit.
Your unit is supplied with one 3.4 fluid oz. (100 ml.)
bottle of SAE 30 SF, SG, SH oil (Fig. 16).
NOTE: Save the bottle to measure the correct amount
for future oil changes. See Changing the Oil.
Fig. 17
4. Pour the entire bottle of oil into the oil fill hole
(Fig. 18).
1. Unscrew the top of the bottle of oil and remove the
paper seal covering the opening. Replace the top.
Next, cut the tip off the funnel spout (Fig. 16).
Oil Fill
Fig. 18
Funnel Spout
NOTE: Never add oil to the fuel or fuel tank.
Fig. 16
5. Wipe up any oil that may have spilled and reinstall
the oil fill plug / dipstick.
The importance of checking and maintaining the proper
oil level in the crankcase cannot be overemphasized.
Check oil before each use and change as needed. Refer
to Changing the Oil.
11
OIL AND FUEL INFORMATION
RECOMMENDED FUEL TYPE
Old fuel is the primary reason for the unit not running
properly. Be sure to use fresh, clean, unleaded gasoline.
NOTE: This is a four cycle engine. In order to avoid
damage to the unit, do not mix oil with
Gasoline.
Definition of Blended Fuels
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 or form
acids when stored. Use fresh fuel (less than 60 days
old), when using alcohol-blended fuel.
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 gas tank.
WARNING: Gasoline is extremely flammable
and its vapors can explode if ignited. To avoid
serious personal injury, 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 away from the area.
1. Remove fuel cap (Fig. 19).
WARNING: Remove fuel cap slowly to
avoid injury from gasoline spray.
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Using Blended Fuels
If you choose to use a blended fuel, or its use is
unavoidable, follow recommended precautions.
• Always use fresh unleaded gasoline
• Use the fuel additive STA-BIL® or an equivalent.
• Drain tank and run the engine dry before storing unit.
FUELING THE UNIT
Gas Can Spout
Fuel Tank
2. Place spout of gas container into the fill hole on the
fuel tank (Fig. 19) and fill tank.
WARNING: Add gasoline in a clean, wellventilated outdoor area. Avoid creating a
source of ignition for spilt fuel.
NOTE: Do not overfill tank.
3. Wipe up any gasoline that may have spilled
4. Reinstall the fuel cap.
WARNING: Never operate the unit without
the fuel cap securely in place.
5. Move the unit at least 30 ft. (9.1 m) from the fueling
source and site before starting the engine.
NOTE: Dispose of the old gasoline in accordance to
Federal, State and Local regulations.
12
STARTING/STOPPING INSTRUCTIONS
Stop/Off (O)
STARTING INSTRUCTIONS
WARNING: Operate this unit only in a wellventilated area outdoors. Carbon monoxide
exhaust fumes can be lethal in a confined area.
WARNING: Avoid accidental starting. Remain
in the starting position when pulling the
starter rope (Fig. 20). The operator and unit
must be in a stable position while starting to
avoid serious personal injury.
Make sure that any Add-On item is installed
correctly and secure before starting the unit.
On/Off Stop Control
Start/On (I)
Throttle Lock-Out
Throttle Control
Fig. 20
1. Check the oil level in the crankcase. Refer to
Checking the Oil Level.
2. Fill the fuel tank with fresh, clean unleaded gasoline.
Refer to Fueling the Unit.
Choke Lever
3. Make sure the Start/Stop Engine Control is in the
START [I] position (Fig. 20).
4. Place the choke lever in the FULL choke (A)
position (Fig. 21).
Primer Bulb
NOTE: Slide the choke lever directly above the appropriate
symbol on filter cover decal (Fig. 21).
5. Fully press and release the primer bulb slowly 10
times until FUEL IS VISIBLE IN THE PRIMER BULB.
If you can’t see fuel in the bulb, press and release the
bulb as many times as it takes before you can see
fuel in it (Fig. 21).
Fig. 21
6. Squeeze the throttle lock-out, then squeeze the
throttle control to the wide open (full throttle) position
(Fig. 22).
7. With the unit in the starting position (Fig. 22) and the
choke in the FULL (A)
position, pull the starter
rope briskly 5 times. If the engine attempts to run
before the fifth pull, proceed to step 8.
8. Move the choke lever to the PARTIAL (B)
(Fig. 21).
Starter Rope
position
NOTE: The engine will not run in the FULL choke (A)
position.
9. Pull the starter rope 1 to 3 pulls until the engine
starts. Run for 15-30 seconds. If the unit fails to start,
return to step 7.
10. Move the choke lever to the RUN (C)
run at full throttle for 30 seconds.
position and
11. Release the throttle control to the idle position and
begin operation.
NOTE: If the engine does not start using these
procedures, repeat steps 5 through 11 using
TWO (2) pulls in the FULL choke (A) position.
NOTE: Choking is unnecessary when starting a warm
engine. Put the On/Off Stop Control in the ON
position (Fig. 20), and start in PARTIAL choke
(B
) position (Fig. 21). After starting, place the
choke lever in the RUN (C
) position.
Throttle Control
Fig. 22
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control (Fig. 22).
Allow the engine to cool down by idling.
2. Put the On/Off Stop Control in the OFF (O) position
(Fig. 20).
13
OPERATING INSTRUCTIONS
OPERATING THE EZ-LINK™ SYSTEM
The EZ-Link™ system enables the use of these optional
Add-Ons.
Blower/Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . BV720r
Cultivator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GC720r
Edger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LE720r
Hedge Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . HS720r
Snow Thrower . . . . . . . . . . . . . . . . . . . . . . . . . . . ST720r
Straight Shaft Trimmer . . . . . . . . . . . . . . . . . . . . SS725r
Tree Pruner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TP720r
Turbo Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB720r
WARNING: Read and understand the
operator’s manual for each add-on prior to
operation.
2. While firmly holding the add-on, push it straight into
the EZ-Link™ coupler (Fig. 24).
NOTE: Aligning the release button with the guide recess
will help installation (Fig. 23).
Release Button
EZ-Link™ Coupler
Primary Hole
Upper Shaft Housing
Lower Shaft Housing
Fig. 24
3. Turn the knob clockwise to tighten (Fig. 25).
Removing the Cutting Attachment or Add-Ons
1. Turn the knob counterclockwise to loosen (Fig. 23).
2. Press and hold the release button (Fig. 23).
3. While firmly holding the upper shaft housing, pull
the cutting attachment or add-on straight out of the
EZ-Link™ coupler (Fig. 24).
CAUTION: Lock the release button in the
primary hole and securely tighten the knob
before operating this unit.
90˚ Edging Hole
WARNING: To avoid serious personal injury
and damage to the unit, shut unit off before
removing or installing add-ons.
180˚ Edging Hole
Installing the Cutting Attachment or Add-Ons
Knob
NOTE: To make installing or removing the add-on
easier, place the unit on the ground or on a work
bench.
1. Turn knob counterclockwise to loosen (Fig. 23).
Fig. 25
EZ-Link™ Coupler
Release Button
CAUTION: The cutting attachment and
add-ons with the EZ-Link™ system are to be
used in the primary hole unless stated
otherwise in the specific add-ons operator’s
manual. Using the wrong hole could lead to
personal injury, or damage to the unit.
Knob
Guide Recess
Fig. 23
14
For edging when using the line head cutting attachment
with EZ-Link™ models, lock the release button of the
cutting attachment into the 90° edging hole or the 180°
edging hole (Fig. 25).
OPERATING INSTRUCTIONS
HOLDING THE TRIMMER
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
(Fig. 26). Check for the following:
• The operator is wearing eye protection and proper
clothing
• With a slightly-bent right arm, the operator’s right hand
is holding the shaft grip
• The operator’s left arm is straight, the left hand holding
the J-handle
• The unit is at waist level
• The cutting attachment is parallel to the ground and
easily contacts the grass without the need to bend over
Once you are in the operating position, hook the
shoulder strap to the unit.
Each time the head is bumped, about 1 inch (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 the ground
while the unit is running.
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
TIPS FOR BEST TRIMMING RESULTS
• For best trimming results, operate unit at full throttle.
• Keep the cutting attachment 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 inches (200 mm) by working from top
to bottom in small increments to avoid premature line
wear or engine drag.
Fig. 26
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. 27) while operating the trimmer at high speed.
NOTE: Always keep the trimming line fully extended.
Line release becomes more difficult as the cutting
line becomes shorter.
• Cut from left to right whenever possible. Cutting to the
right 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 forwardbackward or side-to-side motion. Cutting shorter
lengths produces the best results.
• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon:
• Proper adherence of trimming techniques (explained
above)
• What vegetation is cut
• Where vegetation is cut
For example, the line will wear faster when trimming against
a foundation wall as opposed to trimming around a tree.
Fig. 27
15
OPERATING INSTRUCTIONS
DECORATIVE TRIMMING
Decorative trimming is accomplished by removing all
vegetation around trees, posts, fences and more.
Rotate the whole unit so that the cutting attachment is at
a 30° angle to the ground (Fig. 28).
WARNING: The blade continues to spin after
the engine is turned off. The coasting blade
can seriously cut you if accidentally touched.
• Swing the unit in the opposite direction that the blade
spins, which increases the cutting action.
• After the return swing, move forward to the next area
to be cut plant your feet again.
• The cutting blade is designed with a second cutting
edge. You can use it by removing the blade, turning it
upside down, and reinstalling it.
WARNING: Do not sharpen the cutting
blade. Sharpening the blade can cause the
blade tip to break off while in use. This can
result in severe personal injury to yourself
or others. Replace the blade.
Fig. 28
USING THE CUTTING BLADE
WARNING: Always wear eye, hearing, foot,
body protection and the shoulder strap to
reduce the risk of injury when operating this unit.
WARNING: Do not use the cutting blade
for edging or as an edger. Severe personal
injury to yourself or others can result.
Before operating the unit with the cutting blade, stand in
the operating position (Fig. 29). Refer to Holding the
Trimmer.
To reduce the chance of material wrapping around the
blade, follow these steps:
• Cut at full throttle
• Swing the unit into material to be cut from your right to
your left (Fig. 30)
• Avoid the material just cut as you make the return swing
WARNING: Do not clear away any cut
material with the engine running or blade
turning. To avoid serious personal injury,
turn off the engine. Allow the blade to stop
before removing materials wrapped around
the blade shaft.
Cutting Blade Operating Tips
To establish a rhythmic cutting procedure:
• Plant feet firmly, comfortably apart.
• Bring the engine to full throttle before entering the
material to be cut. At full throttle the blade has
maximum cutting power and is less likely to bind, stall
or cause blade thrust (which can result in serious
personal injury to the operator or others).
WARNING: Blade thrust may occur when
the spinning blade contacts an object that
it does not immediately cut. Blade thrust
can be violent enough to cause the unit
and/or operator to be propelled in any
direction, and possibly 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.
Fig. 29
• Cut while swinging the upper part of your body from
right to left.
• Always release the throttle trigger and allow the engine
to return to idle speed when not cutting.
• When you are finished, always unsnap the unit from
the harness before taking off the harness.
16
Fig. 30
MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should
also be a part of any seasonal tune-up.
NOTE: Some maintenance procedures may require
special tools or skills. If you are unsure about
these procedures take your unit to any non-road
engine repair establishment, individual or
authorized service dealer.
NOTE: Maintenance, replacement, or repair of the emission
control devices and system may be performed by
any non-road engine repair establishment, individual
or authorized service dealer.
WARNING: To prevent serious injury, never
perform maintenance or repairs with the unit
running. Always service and repair a cool unit.
Disconnect the spark plug wire to ensure that
the unit cannot start.
FREQUENCY
MAINTENANCE REQUIRED
REFER TO
Before starting engine
Fill fuel tank with fresh fuel
Check oil
Page 12
Page 19
Every 10 hours
Clean and re-oil air filter
Page 21
First change at 10 hours
Every 25 hours thereafter
Every 25 hours
Change oil
Change oil
Clean spark arrestor
Page 20
Page 20
Page 24
10 hours on new engine
Every 25 hours
Every 25 hours
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
Page 23
Page 23
Page 24
LINE INSTALLATION
2. Remove the inner reel from the outer spool (Fig. 31).
This section covers both SplitLine™ and standard single
line installation.
Always use Genuine Factory Parts™ 0.095 in. (2.41 mm)
replacement line. Line other than the specified may make
the engine overheat or fail.
3. Remove spring from the inner reel (Fig. 31).
WARNING: Never use metal-reinforced
line, wire, chain or rope. These can break
off and become dangerous projectiles.
4. Use a clean cloth to clean the the inner reel, spring,
shaft and inner surface of the outer spool (Fig. 32).
5. Check the indexing teeth on the inner reel and outer
spool for wear (Fig. 33). If necessary, remove burrs or
replace the reel and spool.
There are two methods to replace the trimming line:
• Wind the inner reel with new line
• Install a prewound inner reel
Winding the Existing Inner Reel
1. Hold the outer spool with one hand and unscrew the
Bump Knob clockwise (Fig. 31). Inspect the bolt inside
the bump knob to make sure it moves freely. Replace
the bump knob if damaged.
Fig. 32
Indexing Teeth
Outer Spool
Spring
Inner Reel
Bolt
Bump Knob
Fig. 33
Fig. 31
17
MAINTENANCE AND REPAIR INSTRUCTIONS
For Use with Single
Line ONLY
For Use with SplitLine™
or Single Line
Slotted
Holes
9. Insert the end of the line into the open hole in the
inner reel and pull the line tight to make the loop as
small as possible (Fig. 37).
10. Before winding, split the line back about 6 inches.
11. Wind the line in tight even layers in the direction
indicated on the inner reel.
NOTE: Failure to wind the line in the direction indicated will
cause the cutting attachment to operate incorrectly.
Fig. 34
NOTE: SplitLine™ can only be used with the inner reel
with the slotted holes. Single line can be used on
either type of inner reel. Use Figure 35 to identify
the inner reel you have.
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.
Loop
Fig. 37
12. Insert the ends of the line into the two holding slots
(Fig. 38).
Loop
13. Insert the ends of the line through the eyelets in the
outer spool and place inner reel with spring inside the
outer spool (Fig. 39). 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 reel.
Fig. 35
Single Line Installation
Go To Step 8 for SplitLine™ Installation
6. Take approximately 40 feet (12.2 m) of new 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. 35). Pull the line through the inner reel so that
the loop is as small as possible.
7. Wind the lines in tight even layers, onto the reel
(Fig. 36). 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. Proceed to step 11.
Holding Slots
Fig. 38
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
14. Hold the inner reel in place and install the bump knob
by turning counterclockwise. Tighten securely.
Fig. 36
SplitLine™ Installation
8. Take approximately 20 feet (6.1 m) of new trimming
line. Insert one end of the line through one of the two
holes in the inner reel (Fig. 37). Pull the line through
the inner reel until only about 4 inches is left out.
18
Spring
Fig. 39
MAINTENANCE AND REPAIR INSTRUCTIONS
INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew the
bump knob clockwise (Fig. 31). Inspect the bolt inside
the bump knob to make sure it moves freely. Replace
the bump knob if damaged.
2. Remove the old inner reel from the outer spool
(Fig. 31).
3. Remove the spring from the old inner reel
(Fig. 31).
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
5. Insert the ends of the line through the eyelets in the
outer spool (Fig. 39).
6. Place the new inner reel inside the outer spool. 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.
7. Hold the inner reel in place and install the bump knob
by turning counterclockwise. Tighten securely.
Oil Fill Plug/Dipstick
O-Ring
Full
Add 1.4-1.5 Oz.
(41-44 ml)
Top of Dipstick
Fig. 40
6. If the level is low, add a small amount of oil to the oil
fill hole and recheck (Fig. 41). Repeat until the oil
level reaches the top of the dipstick.
NOTE: Do not overfill the unit.
Replacement Parts
See Accessories / Replacement Parts.
O-Ring
CHECKING THE OIL LEVEL
CAUTION: To prevent extensive engine
wear and damage to the unit, always
maintain the proper oil level in the
crankcase. Never operate the unit with the
oil level below the bottom of the dipstick.
The importance of checking and maintaining the proper
oil level in the crankcase cannot be overemphasized.
Check oil before each use:
1. Stop engine and allow oil to drain into the crankcase.
2. Place the unit on a flat, level surface to get a proper
oil level reading.
3. Keep dirt, grass clippings, etc., out of the engine.
Clean the area around the oil fill plug/dipstick before
removing it.
4. Remove the oil fill plug/dipstick and wipe off oil.
Reinsert it all the way back in.
5. Remove the oil fill plug/dipstick and check oil level.
Oil should be up to the top of the dipstick (Fig. 40).
Oil Fill Plug/Dipstick
Oil Fill Hole
Fig. 41
NOTE: Make sure the O-ring is in place on the oil fill
plug/dipstick when checking and changing the
oil (Fig. 41).
19
MAINTENANCE AND REPAIR INSTRUCTIONS
CHANGING THE OIL
For a new engine, change the oil after the first 10 hours of
operation. Change the oil while the engine is still warm. The
oil will flow freely and carry away more impurities.
CAUTION: Wear gloves to prevent injury
when handling the unit.
1. Unplug spark plug boot to prevent accidental starting.
2. Remove the oil fill plug/dipstick.
3. Pour the oil out of the oil fill hole and into a container
by tipping the unit to a vertical position (Fig. 42).
Allow ample time for complete drainage.
4. Wipe up any oil residue on the unit and clean up any
oil that may have spilled. Dispose of the oil
according to Federal, State and local regulations.
5. Refill the crankcase with 3.4 fluid ounce (100 ml) of
SAE 30 SF, SG, SH oil.
NOTE: Use the bottle and spout saved from initial use to
measure the correct amount. 3.4 ounce (100 ml)
is approximately to the top of the label on the
bottle (Fig. 44). Check the level with the dipstick.
If the level is low, add a small amount of oil and
recheck. Do not overfill (Fig. 43).
Fill Level
Fig. 43
6. Replace the oil fill plug/dipstick.
Fig. 42
20
7. Reconnect spark plug boot.
MAINTENANCE AND REPAIR INSTRUCTIONS
AIR FILTER MAINTENANCE
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation.
It is an important item to maintain. Failure to maintain the
air filter will VOID the warranty.
WARNING: To avoid serious personal injury,
always turn your trimmer off and allow it to
cool before you clean or service it.
1. Open the air filter cover. Push the tab on the right
side of the cover in, pull the air filter cover out and to
the left (Fig. 44).
NOTE: It may be necessary to remove the fuel cap to
completely remove the air filter cover.
2. Remove the air filter (Fig. 44).
Fig. 46
Fig. 47
5. Squeeze the filter to spread and remove excess oil
(Fig. 47).
6. Replace the filter.
NOTE: If the unit is operated without the air filter, you
will VOID the warranty.
Back Plate
Air Filter
Back Plate Slot
Air Filter Cover
Slots
Fig. 48
Tab
Fig. 44
3. Wash the filter in detergent and water (Fig. 45). Rinse
the filter thoroughly and allow it to dry.
7. Reinstall the air filter cover. Position the hooks on
the left side of the air filter cover into the slots at the
left side of the back plate (Fig. 48).
NOTE: It may be necessary to remove the fuel cap to
reinstall the air filter cover.
8. Swing the cover to the right until the tab on the air
filter cover snaps into place in the slot on the back
plate (Fig. 48).
9. Replace the fuel cap if it was removed.
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable. An idle
adjustment screw is reached though a hole in the top of
the engine cover (Fig. 49).
NOTE: Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
Fig. 45
4. Apply enough clean SAE 30 motor oil to lightly coat
the filter (Fig. 46).
Check Fuel
Old fuel is usually the reason for improper unit
performance. Drain and refill the tank with fresh fuel prior
to making any adjustments. Refer to Oil and Fuel
Information.
21
MAINTENANCE AND REPAIR INSTRUCTIONS
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.
Adjust Idle Speed Screw
WARNING: The cutting attachment may spin
during idle speed adjustments. Wear
protective clothing and observe all safety
instructions to prevent serious personal injury.
If, after checking the fuel 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. Refer to Starting/Stopping Instructions.
ROCKER ARM CLEARANCE
This requires disassembly of the engine. If you feel
unsure or unqualified to perform this, take the unit to an
authorized service center.
NOTE: Inspect the valve to rocker arm clearance with a
feeler gauge after the first 10 hours of operation
and then every 25 hours of operation thereafter.
• The engine must be cold when checking or adjusting
the valve clearance.
• This task should be performed inside, in a clean,
dust free area.
1. Remove the muffler cover by pressing down on it,
separating it from the engine cover. Using a flat
blade screwdriver, disengage the middle and front
tabs and slots first. The cover will hinge off from the
rear tab (Fig. 50).
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. 49). Turn
the idle speed screw in, clockwise, 1/8 of a turn at a
time (as needed) until the engine idles smoothly.
NOTE: The cutting attachment should not rotate when
the engine idles.
3. If the cutting attachment rotates when the engine idles,
turn the idle speed screw counterclockwise 1/8 of a
turn at a time (as needed), to reduce idle speed.
Checking the fuel, cleaning the air filter, and adjusting
the idle speed should solve most engine problems. If not
and all of the following are true:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor adjusted by an authorized service dealer.
WARNING: To prevent serious personal
injury, make sure the cutting attachment
has stopped rotating before you turn it off
and set it down.
Engine Cover
Rear Slot
and Tab
Middle Tab
Front Tab
Middle Slot
Front Slot
Fig. 50
2. Remove the two (2) screws on top of the engine cover
with a Flat-head or T-25 Torx screwdriver (Fig. 51).
Top View Of The Engine
Idle Adjustment Screw
Remove Screws
Engine Cover
Fig. 49
Muffler
Fig. 51
22
MAINTENANCE AND REPAIR INSTRUCTIONS
3. Remove the screw behind the engine cover (Fig. 52).
Adjusting Nuts
Rocker Arms
INTAKE
Screw
EXHAUST
Feeler Gauge
Fig. 52
4. Disconnect the spark plug wire.
5. Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8 in.
socket counterclockwise.
6. Remove the engine cover (Fig. 51).
7. Clean dirt from around the rocker arm cover.
Remove the screw holding the rocker arm cover with
a large flat blade screwdriver or Torx T-25 bit
(Fig. 53). Remove the rocker arm cover and gasket.
Fig. 54
Adjusting Nut
Rocker Arm
.003–.006 in.
(.076–.152 mm)
Rocker Arm Cover
Feeler Gauge
Spark Plug Hole
Valve Stem
Fig. 55
10. If the clearance is not within specification:
Fig. 53
8. Pull the starter rope slowly to bring the piston to the top
of its travel, (known as top dead center). Check that:
• The piston is at the top of its travel while looking in
the spark plug hole (Fig. 53)
• Both rocker arms move freely, and both valves are
closed
If these statements are not true, repeat this step.
9. Slide the feeler gauge between the rocker arm and
the valve return spring. Measure the clearance
between the valve stem and rocker arm (Fig. 54).
Measure both the intake and exhaust valves.
The recommended clearance for both intake and
exhaust is .003 – .006 in. (.076 – 0.152 mm). Use a
standard automotive .005 in. (0.127 mm) feeler gauge.
The feeler gauge should slide between the rocker arm
and valve stem with a slight amount of resistance,
without binding. See Figure 54 and 55.
a. Turn the adjusting nut using a 5/16 inch (8 mm)
wrench or nut driver (Fig. 55).
• To increase clearance, turn the adjusting nut
counterclockwise.
• To decrease clearance, turn the adjusting nut
clockwise.
b. Recheck both clearances, and adjust as necessary.
11. Reinstall the rocker arm cover using a new gasket.
Torque the screw to 20–30 in•lb (2.2–3.4 N•m).
12. Reinstall the engine cover. Check alignment of the
cover before tightening the screws. Tighten screws.
13. Reinstall the muffler cover. Slip the rear tab on the
muffler cover into the engine cover rear slot. Then
slide the remaining slots into the taps until they snap
into place (Fig. 50).
14. Check the spark plug and reinstall. See Replacing
the Spark Plug.
15. Replace the spark plug wire.
23
MAINTENANCE AND REPAIR INSTRUCTIONS
REPLACING THE SPARK PLUG
SPARK ARRESTOR MAINTENANCE
Use a replacement part number 180852 spark plug. The
correct air gap is 0.025 in. (0.655 mm.). Remove the plug
after every 25 hours of operation and check its condition.
1. Stop the engine and allow it to cool. Grasp the plug
wire firmly and pull the cap 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 0.025 in. (0.655 mm.) using a feeler gauge (Fig. 56).
1. Remove the muffler cover. See Rocker Arm Clearance.
2. With a flat blade screwdriver or Torx T-20 bit,
remove the screw attaching the spark arrestor cover
to the muffler (Fig. 57).
Muffler
Spark Arrestor Screen
Tab
0.025 in.
(0.655 mm.)
Screw
Spark Arrestor Cover
Slot
Fig. 57
Fig. 56
CAUTION: Do not sand blast, scrape, or
clean electrodes. Grit in the engine could
damage the cylinder.
4. Install a correctly-gapped spark plug in the cylinder
head. Turn 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.
24
3. Pull the tab on the spark arrestor cover out of the
muffler. Remove the spark arrestor cover.
4. Remove the spark arrestor screen from the spark
arrestor cover.
5. Clean the spark arrestor screen with a wire brush or
replace it.
6. Reinstall the spark arrestor screen, spark arrestor
cover and screw.
MAINTENANCE AND REPAIR INSTRUCTIONS
CLEANING
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.
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.
• Lock up the unit 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
1. Drain all gasoline from the gas tank into a container.
Do not use gas that has been stored for more than 60
days. Dispose of the old gasoline in accordance to
Federal, State, and Local regulations.
2. Start the engine and allow it to run until it stalls. This
ensures that all gasoline has been drained from the
carburetor.
3. Allow the engine to cool. Remove the spark plug and
put 1 oz. (30 ml) of high quality motor 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. Change the oil, referring to Changing the Oil.
Dispose of the old oil in accordance to Federal, State
and Local regulations.
5. 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.
TRANSPORTING
•
•
•
•
Allow the engine to cool before transporting.
Secure the unit while transporting.
Drain the gas tank before transporting.
Tighten gas cap before transporting.
ACCESSORIES/REPLACEMENT PARTS
4-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181786
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180852
Spark Arrestor Screen . . . . . . . . . . . . . . . . . . . . .180890
Replacement Line . . . . . . . . . . . . . . . . . . . . . . . . 180120
Replacement Line Cartridge . . . . . . . . . . . . . . . . 147345
Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . 610636
Outer Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 683301
Inner Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147495
Bump Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180814
Shoulder Harness . . . . . . . . . . . . . . . . . . . . . . . .682075
For a full list of replacement parts, refer to the parts list
located at the inside back cover of this manual.
25
TROUBLESHOOTING
ENGINE WILL NOT START
CAUSE
On/Off Stop Control is in OFF position
Empty fuel tank
Primer bulb wasn't pressed enough
Old fuel
Fouled spark plug
Plugged spark arrestor
ACTION
Move On/Off Stop Control to ON
Fill fuel tank with new fuel
Press primer bulb fully and slowly 10 times
Drain gas tank and add fresh fuel
Replace or clean the spark plug
Clean or replace spark arrestor
ENGINE WILL NOT IDLE
CAUSE
Air filter is plugged
Old fuel
Improper carburetor adjustment
ACTION
Replace or clean the air filter
Drain gas tank and add fresh fuel
Adjust carburetor
ENGINE WILL NOT ACCELERATE
CAUSE
Old fuel
Improper carburetor adjustment
Cutting attachment bound with grass
Dirty air filter
Plugged spark arrestor
ACTION
Drain gas tank and add fresh fuel
Take to an authorized service dealer for adjustment
Stop the engine and clean the cutting attachment
Clean or replace the air filter
Clean or replace spark arrestor
ENGINE LACKS POWER OR STALLS WHEN CUTTING
CAUSE
Old fuel
Improper carburetor adjustment
Fouled spark plug
Plugged spark arrestor
ACTION
Drain gas tank and add fresh fuel
Take to an authorized service dealer for adjustment
Replace or clean the spark plug
Clean or replace spark arrestor
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
CAUSE
Cutting attachment bound with grass
Cutting attachment out of line
Inner reel bound up
Cutting head dirty
Line welded
Line twisted when refilled
Not enough line is exposed
ACTION
Stop the engine and clean cutting attachment
Refill with new line
Replace the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded section and rewind
Disassemble and rewind the line
Push the bump knob and pull out line until 4 inches
(102 mm) of line is outside of the cutting attachment
CUTTING LINE ADVANCES UNCONTROLLABLY
C A U SE
Oil, cleaner or lubricant in cutting head
ACTION
Clean and thoroughly dry the cutting head
If further assistance is required, contact your authorized service dealer.
26
SPECIFICATIONS
ENGINE*
Engine Type.......................................................................................................................................... Air-Cooled, 4-Cycle
Displacement......................................................................................................................................... 1.6 cu. in. (26.2 cc)
Clutch Type ......................................................................................................................................................... Centrifugal
Operating RPM ....................................................................................................................................... 7,200 - 8,300 rpm
Idle Speed RPM ...................................................................................................................................... 3,000 - 3,600 rpm
Ignition Type.......................................................................................................................................................... Electronic
Ignition Switch ................................................................................................................................................Rocker Switch
Valve clearance .................................................................................................................... .003–.006 in. (.076–.152 mm)
Spark Plug Gap ................................................................................................................................ 0.025 inch (0.655 mm)
Lubrication ........................................................................................................................................................... SAE 30 Oil
Crankcase Oil Capacity ................................................................................................................................ 3.4 oz (100 ml)
Fuel ....................................................................................................................................................................... Unleaded
Carburetor ....................................................................................................................................... Diaphragm, All-Position
Starter............................................................................................................................................................... Auto Rewind
Muffler ..................................................................................................................................................... Baffled with Guard
Throttle ............................................................................................................................................... Manual Spring Return
Fuel Tank Capacity........................................................................................................................................ 12 oz (355 ml)
DRIVE SHAFT & CUTTING ATTACHMENT*
Drive Shaft Housing .................................................................................................................. Aluminum Tube (EZ-Link™)
Throttle Control ........................................................................................................................................ Finger-Tip Trigger
Approximate Unit Weight (no fuel, with J-handle, cutting attachment and shield) .......................................... 13 lbs (6 kg)
Cutting Mechanism ................................................................................. 4-Tooth Cutting Blade, Dual String Cutting Head
Line Spool............................................................................................................................................. Bump Line Releaser
Line Spool Diameter ............................................................................................................................ 4 inches (101.6 mm)
Trimming Line Diameter ..................................................................................................................... 0.095 inch (2.41 mm)
Cutting Path Diameter, Cutting Attachment ........................................................................................ 18 inches (45.7 cm)
Cutting Path Diameter, Cutting Blade .................................................................................................... 8 Inches (204 mm)
Shoulder Harness ................................................................................................................................... Single Quick-Snap
*All specifications are based on the latest product information available at the time of printing. We reserve the right to
make changes at any time without notice.
27
NOTES
28
California / EPA Emission Control Warranty Statement
Your Warranty Rights and Obligations
The California Air Resource Board, the Environmental Protection Agency and MTD LLC (MTD) are pleased to explain
the emission control system warranty on your 2000 and later small off-road engine. In California and the 49 other states
new small off-road engines must be designed, built and equipped to meet stringent anti-smog standards. Ryobi 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 your small off-road engine.
Your emission control system may include parts such as the carburetor or fuel-injected system, the ignition system, and
catalytic converter. Also included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, Ryobi will repair your small off-road engine at no cost to you including diagnosis,
parts and labor.
The 2000 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 Ryobi.
Owners Warranty Responsibilities
• As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your
operator’s manual. Ryobi recommends that you retain all receipts covering maintenance on your small off-road engine,
but Ryobi cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all
scheduled maintenance.
• As the small off-road engine owner, you however should be aware that Ryobi 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.
• 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.
If you have any questions regarding your warranty rights and responsibilities, you should call 1-800-345-8746.
Manufacturer’s Warranty Coverage
• 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.
• Any warranted part which is not scheduled for replacement, as required maintenance or which is scheduled for only
for regular inspection to the effect of “Repair or Replace as Necessary” is warranted for the warranty period. Any
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 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.
• The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still
under warranty.
• 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 of warranted parts caused by the use of add-on or modified parts.
• 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.
• 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
• 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.
29
MANUFACTURER’S LIMITED WARRANTY FOR:
The limited warranty set forth below is given by MTD LLC
(“MTD”) with respect with new merchandise purchased and
used in the United States, its possessions and territories.
MTD warrants this product against defects in material and
workmanship for a period of two (2) years commencing on the
date of original purchase and will, at its option, repair or
replace, free of charge, any part found to be defective in
material or workmanship. This limited warranty shall only
apply if this product has been operated and maintained in
accordance with the Operator’s Manual furnished with the
product, and has not been subject to misuse, abuse,
commercial use, neglect, accident, improper maintenance,
alteration, vandalism, theft, fire, water or damage because of
other peril or natural disaster. Damage resulting from the
installation or use of any accessory or attachment not
approved by MTD for use with the product(s) covered by this
manual will void your warranty as to any resulting damage.
This warranty is limited to ninety (90) days from the date of
original retail purchase for any MTD product that is used for
rental or commercial purposes, or any other incomeproducing purpose.
HOW TO OBTAIN SERVICE: Warranty service is available,
WITH PROOF OF PURCHASE THROUGH YOUR LOCAL
AUTHORIZED SERVICE DEALER. To locate the dealer in your
area, please check for a listing in the Yellow Pages or contact
the Customer Service Department of MTD LLC by calling
1-800-345-8746 or writing to P.O. Box 361131, Cleveland
OH 44136-0019 or if in Canada call 1-800-668-1238. No
product returned directly to the factory will be accepted
unless prior written permission has been extended by the
Customer Service Department of MTD LLC.
This limited warranty does not provide coverage in the
following cases:
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
C. MTD does not extend any warranty for products sold or
exported outside of the United States of America, its
possessions and territories, except those sold through
MTD’s authorized channels of export distribution.
MTD reserves the right to change or improve the design of
any RYOBI Product without assuming any obligation to
modify any product previously manufactured.
No implied warranty, including any implied warranty of
merchantability or fitness for a particular purpose,
applies after the applicable period of express written
warranty above as to the parts as identified. No other
express warranty or guaranty, whether written or oral,
except as mentioned above, given by any person or
entity, including a dealer or retailer, with respect to any
product shall bind MTD. During the period of the
Warranty, the exclusive remedy is repair or replacement
of the product as set forth above. (Some states do not
allow limitations on how long an implied warranty lasts, so
the above limitation may not apply to you.)
The provisions as set forth in this Warranty provide the
sole and exclusive remedy arising from the sales. MTD
shall not be liable for incidental or consequential loss or
damages including, without limitation, expenses
incurred for substitute or replacement lawn care
services, for transportation or for related expenses, or
for rental expenses to temporarily replace a warranted
product. (Some states do not allow limitations on how long
an implied warranty lasts, so the above limitation may not
apply to you.)
In no event shall recovery of any kind be greater than the
amount of the purchase price of the product sold.
Alteration of the safety features of the product shall void
this Warranty. You assume the risk and liability for loss,
damage, or injury to you and your property and/or to
others and their property arising out of the use or misuse or
inability to use the product.
This limited warranty shall not extend to anyone other than
the original purchaser, original lessee or the person for
whom it was purchased as a gift.
How State Law Relates to this Warranty: This warranty
gives you specific legal rights, and you may also have other
rights which vary from state to state.
To locate your nearest service dealer dial 1-800-345-8746
in the United States or 1-800-668-1238 in Canada.
MTD LLC
P.O. Box 361131
Cleveland, OH 44136-0019
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
FOR QUESTIONS CALL 1-800-345-8746 IN U.S.
OR 1-800-668-1238 IN CANADA
OPERATOR’S MANUAL PART NO. 769-00559
PRINTED IN U.S.A.
2/03
MANUEL IMPORTANT
À NE PAS JETER
TABLE DES MATIÈRES
I.
II.
PROPOSITION 65 DE CALIFORNIE
AVERTISSEMENT
LES GAZ D'ÉCHAPPEMENT DU MOTEUR DE
CET APPAREIL CONTIENNENT DES PRODUITS
CHIMIQUES CONSIDÉRÉS PAR L'ÉTAT DE
CALIFORNIE COMME POUVANT CAUSER LE
CANCER, DES MALFORMATIONS
CONGÉNITALES OU D'AUTRES EFFETS NOCIFS
SUR L'APPAREIL DE REPRODUCTION
SYMBOLE
SIGNIFICATION
SYMBOLE
SIGNIFICATION
F4
F5
SIGNIFICATION
SIGNIFICATION
• SYMBOLE ALERTE DE
SÉCURITÉ
• COMMANDE MARCHE/ARRÊT
STOP
ALLUMAGE / DÉMARRAGE / MARCHE
• COMMANDE MARCHE/ARRÊT
STOP
ARRÊT ou STOP
• AVERTISSEMENT SURFACE
CHAUDE
F6
SYMBOLE
FAMILIARISEZ-VOUS AVEC VOTRE APPAREIL
APPLICATIONS
Commande Marche/Arrêt Stop
Manette
des gaz
F7
Fig. 2
(3) vis
Boîtier d'engrenages
Fig. 7
Écrou
Bague de l'arbre
de sortie
Tige de
blocage
Fig. 8
Fig. 11
F9
Pas de guidage
Fig. 12
Fig. 14
Tige de
blocage
Fig. 15
AJOUT D'HUILE AU CARTER: MISE EN SERVICE
Fig. 17
Fig. 16
F11
t
an b
ur
rb lom
Ca ns p
sa
F12
INSTRUCTIONS DE DÉMARRAGE ET ARRÊT
INSTRUCTIONS DE DÉMARRAGE
Stop/Arrêt (O)
Commande Marche/Arrêt Stop
Manette des gaz
Fig. 20
Fig. 21
Manette des gaz
Fig. 22
F13
EZ-LinkTM
Fig. 25
Fig. 23
F14
Fig. 26
Fig. 27
Fig. 29
Fig. 30
FRÉQUENCE
ENTRETIEN REQUIS
RÉFÉRENCE
Page 12
Page 19
Page 21
Page 20
Page 20
Page 24
Page 23
Page 23
Page 24
Fig. 33
F17
Fig. 34
Fig. 35
Fig. 36
Ressort
Fig. 39
Plein
Ajoutez 41-44 ml
(1,4-1,5 oz)
VÉRIFICATION DU NIVEAU D'HUILE
F19
Fig. 43
F20
Fig. 46
Fig. 47
Fentes
Fig. 48
Languette
Fig. 44
Encoches
Fig. 50
Fig. 51
ADMISSION
Vis
ECHAPPEMENT
Fig. 52
0,076-0,0152 mm
(0,003-0,006 po)
ENTRETIEN ET RÉPARATIONS
REMPLACEMENT DE LA BOUGIE
ENTRETIEN DU PARE-ÉTINCELLES
0.025 in.
(0.655 mm)
Fig. 56
F24
Fente
Vis
F25
F27
REMARQUES
F28
REMARQUES
F29
REMARQUES
F30
F31
GARANTIE LIMITÉE DU FABRICANT POUR:
MTD LLC
P.O. Box 361131
Cleveland, OH 44136-0019
CONSERVEZ CES INSTRUCTIONS POUR TOUTE RÉFÉRENCE ULTÉRIEURE.
POUR TOUTE QUESTIONS, VEUILLEZ CONTACTER LE 1-800-345-8746 AUX ÉTATS-UNIS
OU LE 1-800-668-1238 AU CANADA
GUIDE DE L’UTILISATEUR PARTIE NUMÉRO 769-00559
IMPRIME AUX ÉTATS-UNIS
2/03
MANUAL DEL OPERADOR
SI TIENE PREGUNTAS, LLAME AL 1-800-345-8746 en EE.UU.
o al 1-800-668-1238 en CANADA
www.RyobiOutdoor.com
ESTE MANUAL ES IMPORTANTE
NO LO DESECHE
INTRODUCCION
INDICE DE CONTENIDOS
MUCHAS GRACIAS
I.
II.
CONTENIDO DE LA CAJA
•
∆
∆
∆
•
•
•
•
•
•
ADVERTENCIA DE LA PROPOSICIÓN 65 DE CALIFORNIA
ADVERTENCIA
LAS EMISIONES DEL MOTOR DE
ESTE PRODUCTO CONTIENEN
SUBSTANCIAS QUIMICAS QUE EL
ESTADO DE CALIFORNIA CONOCE
COMO CAUSANTES DE CANCER,
DEFECTOS DE NACIMIENTO U OTROS
DAÑOS REPRODUCTIVOS.
SIMBOLO
SIGNIFICADO
SIMBOLO
SIGNIFICADO
E3
E4
E5
SIGNIFICADO
SIGNIFICADO
• CONTROL DE ENCENDIDO Y
APAGADO
• ADVERTENCIA - LEA EL
MANUAL DEL OPERADOR
• CONTROL DE ENCENDIDO Y
APAGADO
APAGADO O PARADO
E6
SIMBOLO
ENCENDIDO /ARRANQUE /MARCHA
NORMAS PARA UNA OPERACION SEGURA
Amortiguardor de chispas
CONOZCA SU UNIDAD
APLICACIONES
•
E7
Manija en J
(4) Tornillos
Abrazadera
inferior
Tuercas
Fig. 1
Fig. 4
Fig. 5
Fig. 6
Fig. 2
Fig. 3
E8
Fig. 7
REMOCIÓN DEL ACCESORIO DE CORTE E
INSTALACIÓN DE LA CUCHILLA DE CORTE
Fig. 10
Fig. 12
Sentido
horario
Fig. 14
Fig. 16
E11
•
•
le
tib
us o
mb lom
Co in p
s
Fig. 19
E12
INFORMACION DEL ACEITE Y DEL COMBUSTIBLE
INSTRUCCIONES DE ARRANQUE
Parado/Apagado (O)
Fig. 21
E13
Fig. 24
Orificio lateral 90˚
Orificio lateral
180˚
Perilla
Fig. 23
E14
INSTRUCCIONES DE OPERACION
Fig. 26
Fig. 27
E16
Fig. 29
Fig. 30
FRECUENCIA
MANTENIMIENTO REQUERIDO
CONSULTE
Page 13
Page 20
Cada 10 horas
Page 22
Page 21
Page 21
Page 25
Page 24
Page 24
Page 25
Fig. 32
Fig. 33
E17
Fig. 34
Lazo
Fig. 35
Lazo
Fig. 37
Fig. 36
Resorte
Fig. 39
E19
Fig. 43
Fig. 42
E20
Fig. 46
Fig. 47
2. Retire el filtro de aire (Fig. 44).
Ranuras
Filtro de aire
Cubierta del
filtro de aire
Fig. 48
INSTRUCCIONES DE MANTENIMIENTO Y REPARACION
Limpieza del Filtro de Aire
HUELGO DEL BRAZO OSCILANTE
Muesca y
Orejeta
Orejeta
Orejeta
Fig. 50
Vista superior del motor
E22
Fig. 51
Brazos
oscilantes
Tornillo
ESCAPE
Fig. 52
Galga
Cubierta del brazo
oscilante
Vástago de la válvula
Fig. 55
Fig. 53
E23
Ranura
Tornillo
0.025 in.
(0.655 mm)
Fig. 56
E24
E25
E27
NOTAS
E28
NOTAS
E29
PARTS LIST
ENGINE PARTS - MODELS 890R
4-CYCLE GAS TRIMMER
PPN - 41CD890A034
2
1
Part Numbers On Following Page
3
4
16
17 19
20 21
5
23
22
24
6
8
25
26
7
29
27
85
28
10
39
11
9
30
38
31
12
43
36
34
13
37
32
40
41
42
18
44
33
14
50
35
15
46
51
84
49
81
52
53
83
81
82
47
54
48
57
58
55
80
73
88
72
74
71
56
70
68
59
45
69
67
60
78
61
86
79
62
75
66
65
77
76
64
63
E31
PARTS LIST
ENGINE PARTS - MODEL 890R
4-CYCLE GAS TRIMMER
PPN - 41CD890A034
Item
Part No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
753-1222
791-182339
791-181025
791-182098
791-182099
791-182340
791-182101
791-182100
791-182341
791-182103
791-181038
791-182102
791-181033
791-182653
791-182344
753-1226
791-182749
753-1232
791-181034
791-182347
791-182348
791-182732
753-1225
791-181751
791-182350
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
791-182097
791-181750
791-181757
791-182351
791-182271
791-182352
791-182353
791-181080
791-182354
791-182355
791-182356
753-1231
791-181048
791-182359
791-180890
791-181045
791-181046
791-182361
753-04092
753-1241
Engine Cover
Engine Cover Screws
Valve Cover Screw
Valve Cover
Valve Cover Gasket
Rocker Adjustment Nut
Rocker Arm Pivot
Rocker Arm
Rocker Arm Stud
Valve Spring Retainer
Valve Spring
Push Rod Guide
Push Rod
Cylinder Head Assembly
Cylinder Screw
Intake Baffle
Carburetor Mount Gasket
Muffler Baffle
Nut
Carburetor Mount (includes 19)
Carburetor Mount Screw
Carburetor Gasket
Carburetor with Primer
O-Ring, Carburetor
Air Filter/Choke Cover Assembly
(includes 28 & 29)
Breather Tube
Air Filter Mounting Screw
Air Filter
Air Filter Cover
Fuel Cap
Fuel Return Line
Fuel Pick-Up Line with Filter
Screw
Washer
Fuel Tank Assembly (includes 30-32)
Fuel Tank Shield
Throttle Cable
Muffler Gasket
Muffler (includes 40, 42-44)
Spark Arrestor Screen
Screen Cover
Screw
Muffler Mounting Screw
Muffler Cover
Nut
E32
Item
46
47
48
49
50
51
52
53
Part No.
Description
*
*
*
Pal Nut Retaining Ring
Recoil Pulley
Recoil Spring
Nut Clip
Pull Handle
Rope Guide
Rope
Starter Housing Assembly
(includes 46-52 & 54)
753-04154
Starter Housing Screw
791-182368
Clutch Washer
753-1238
Clutch with Spacer
791-153592
Clutch Drum
753-1239
Clutch Cover
791-145569
Anti-Rotation Screw
753-1240
Screw
791-181345
Clutch Cover Screw
791-182725
Ignition Module with Screws
791-181065
Spacer
791-181867
Flywheel
791-182743
Shroud Assembly with Screws
(includes 86)
791-182376
Crankcase Assembly
791-182375
90˚ Elbow
791-182379
Breather Hose
791-181015
Cam Gear
753-1242
Cam Follower
791-181013
Cam Bracket
791-181012
Cam Bracket Screw
791-181040
Valves, Intake and Exhaust
791-182374
Cylinder Gasket
791-181018
Oil Pan Gasket
791-182377
Oil Pan (includes 75 & 77)
791-181020
Oil Pan Screw
791-182378
Dipstick Assembly (includes 79)
791-182290
O-Ring
791-181009
Connecting Rod
791-181008
Wrist Pin Button
753-1243
Piston
791-181006
Wrist Pin
791-181005
Piston Ring Set
791-182409
Washer
791-181861
Screw
791-182365
Ignition Switch Assembly w/ Leads
791-180852B Spark Plug
753-04087
Short Block Assembly
(includes 3-15, & 66-84)
791-180142
Starter Pawl Repair Kit
753-04014
Carburetor Repair Kit
Cylinder Assembly (includes 9, 12, 14, 74)
791-182745
*
Parts not shown
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
*
*
791-181247
753-1199
753-1236
791-182366
791-181079
791-611061
791-613103
791-181020
BOOM AND TRIMMER PARTS - MODEL 890R
4-CYCLE GAS TRIMMER
PPN - 41CD890A034
5
49
1
7
12
10
6
50
48
11
14
29
29
46
15
30
13
51
47
1
2
3
4
8
9
Item Part No.
1
791-182801
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
*
791-182802
791-182803
791-182690
753-1231
791-182804
791-182805
791-610327
753-1247
791-181099
791-612831
791-612021
791-683295
791-181811
791-181812
791-181813
791-181814
791-181815
791-145569
791-181616B
791-182057
791-181617
791-181618B
791-181886
791-182541
791-613300
791-182200
791-182193
791-182195
791-145569
791-147492
791-182196
791-683304
791-683299
791-682061
791-147490
791-612483
791-683301
791-612026
791-610636B
791-147495
791-180814B
791-145873B
791-181699
753-04348
791-180014B
*
*
791-613226
791-682075
Description
45
32
21
16
17
22
23
18
Throttle Housing &
Trigger Assembly (includes 2-4)
Throttle Trigger Lock-Out
19
20
Throttle Trigger
25
Throttle Trigger Spring
24
Throttle Cable Assembly
26
Lead Wire Assembly
Switch Assembly (includes 6)
Harness Clip
33
Upper Drive Shaft Housing Assembly
29
35
J-Handle Assembly (includes 11 & 12)
Grip
Tube Closure
Handle Bracket Assembly (includes 14-19)
34
Screw
30
Upper Handle Clamp
Middle Handle Clamp
Lower Handle Clamp
Nut
Anti-Rotation Screw
35
Click-Link Coupler (includes 21-24)
Screw
Bolt
45
43
Adjustment Knob
Knob Retaining Nut
Lower Drive Shaft Housing Assembly
Lower Flexible Drive Shaft
Shield Mount Screw Assembly
2 piece Gearbox Assembly (includes 27, 29 & 30)
Gearbox Mounting Hardware
36
Anti-Rotation Screw
Blade Shield/Shield Mount
44
Blade Driver
Shield Mounting Screw
Shield and Blade Assembly (includes 35)
Blade Assembly
Retaining Washer
Spool Shaft
Outer Spool Assembly
Retainer
Spring
Inner Reel
Bump Head Knob Assembly
4-Tooth Blade
2 Piece Gearbox Assembly Parts – Item 28
Nut
46
791-182191
Left Housing
Palnut
47
791-182192
Right Housing
Blade Retaining Kit
48
791-182194
Pinion Gear Assembly
(includes 36 & 44)
49
791-182199
Output Shaft Bushing
Locking Rod Tool
50
791-182198
Output Shaft Gear
Shoulder Harness
51
791-182197
Output Shaft Assembly
(includes 49 & 50)
28
27
28
31
27
32
36
37
38
39
40
41
42
E33
GARANTÍA LIMITADA DEL FABRICANTE PARA:
MTD LLC
P.O. Box 361131
Cleveland, OH 44136-0019
GUARDE ESTAS INSTRUCCIONES PARA USARLAS COMO REFERENCIA EN EL FUTURO.
PARA FORMULAR PREGUNTAS, LLAME AL 1-800-345-8746 EN LOS EE.UU.
O AL 1-800-668-1238 EN CANADA
MANUAL DEL OPERADOR, No. de catálogo 769-00559
IMPRESO EN LOS EE.UU.
2/03">