MTD YM20CS, 41ADY20C901 Owner’s Manual
Operator's Manual
TABLE OF CONTENTS
Service Information .............................. 1
Rules for Safe Operation .......................... 2
Oil and Fuel Information ........................... 3
Know Your Unit ................................. 4
Assembly Instructions ............................ 5
Starting/Stopping Instructions ...................... 7
Operating Instructions ............................ 8
Maintenance and Repair Instructions ................ 9
Cleaning and Storage ........................... 12
Troubleshooting Chart ........................... 13
Specifications ................................. 14
Warranty Information ............................ 16
Parts List .................................... E18
WARNING: When using the unit, you must follow
the safety rules. Please read these instructions
before operating the unit in order to ensure the
safety of the operator and any bystanders. Please
keep these instructions for later use.
2-Cycle Gasoline Trimmer
YM20CS
SAVE THESE INSTRUCTIONS
For service call 1-800-800-7310 in the United States, or
1-800-668-1238 in Canada to obtain a list of authorized
service dealers near you. For more details about your unit, visit
our website at www.yardman.com.
DO NOT RETURN THE UNIT TO THE RETAILER. PROOF
OF PURCHASE WILL BE REQUIRED FOR WARRANTY
SERVICE.
THIS PRODUCT IS COVERED BY ONE OR MORE U.S.
PATENTS. OTHER PATENTS PENDING.
Service on this unit both within and after the warranty period
should be performed only by an authorized and approved
service dealer.
SPARK ARRESTOR NOTE
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 #753-05169 Spark Arrestor Kit.
CALIFORNIA PROPOSITION 65 WARNING
THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
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© 2007 MTD SOUTHWEST INC, All Rights Reserved.
P/N 769-02890 (01/07)
• IMPORTANT SAFETY INSTRUCTIONS •
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.
• All guards and safety attachments must be installed properly
before operating the unit.
• Inspect the unit before use. Replace damaged parts. Check
for fuel leaks. Make sure all fasteners are in place and secure.
Replace parts that are cracked, chipped, or damaged in any
way. Do not operate the unit with loose or damaged parts.
• Carefully inspect the area before starting the unit. Remove all
debris and hard or sharp objects such as glass, wire, etc.
• Be aware of the risk of injury to the head, hands and feet.
• Clear the area of children, bystanders, and pets. At a
minimum, keep all children, bystanders, and pets outside a
50 feet (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 unit
immediately.
• Use only 0.095 inch (2.41 ram) diameter original equipment
manufacturer replacement line. Never use metal-reinforced line,
wire or rope. These can break off and become dangerous
projectiles.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments or
repairs before using unit.
SAFETY WARNINGS FOR GAS UNITS
• Store fuel only in containers specifically designed and approved
for the storage of such materials.
I,_ WARNING: Gasoline is highly flammable' and its I
• Avoid creating a source of ignition for spilled fuel. Do not
start the engine until fuel vapors dissipate.
• 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.
• Mix and 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
or mixing fuel. Wipe up any spilled fuel from the unit
immediately. Always wipe unit dry before using.
• Move the unit at least 30 feet (9.1 m) from the fueling source
and site before starting the engine. Do not smoke or allow
sparks and open flames near 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 be fatal. Operate this unit only
in a well-ventilated outdoor area.
• Wear safety glasses or goggles that meet ANSI Z87.1 standards
and are marked as such. Wear ear/hearing protection when oper-
ating this unit. Wear a face or dust mask if the operation is dusty.
• Wear heavy long pants, boots, gloves and a long sleeve
shirt. 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 as a trimmer. 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 D-handle to your size in order to provide the best grip.
vapors can explode if ignited. Take the following
precautions:
• 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.
• Avoid accidental starting. Be in the starting position whenever
pulling the starter rope. The operator and unit must be in astable
position while starting. Refer to Starting/Stopping Instructions.
• Use the right tool. Only use this tool for its intended purpose.
• Do not overreach. Always keep proper footing and balance.
• Always hold the unit with both hands when operating. Keep
a firm grip on both handles 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 rotates.
• Do not touch the engine, gear housing or muffler. These parts get
extremely hot from operation, even after the unit is turned off.
• 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.
• 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.
• Stop the unit, switch the engine to off, and disconnect the
spark plug for maintenance or repair.
• Use only original equipment manufacturer 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 a faulty muffler and spark
arrestor. Keep the engine and muffler free from grass,
leaves, excessive grease or carbon build up.
OTHER SAFETY WARNINGS
• Never store a fueled unit 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 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
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
ALERT SYMBOL
Indicates danger, warning or caution, Maybe used
_ in conjunction with other symbols or pictographs.
Read the operator's manual(s) and follow al! warnings
and safety instructions, Failure to do so can result in
serious injury to the operator and/or bystander s,
WARNING:Thrown 0bjects and loud noise Can
cause severe eye injury and hearing !oss. Wear eye
protection meeting ANSI Z87.1 standards and ear
protection when operating this unit. Use a full face
shield when needed.
_ • UNLEADED FUEL
Alway s Use c!ean,fres h unleaded !Uel
* OIL
Rare i t ° opeiator,s manUa! i0[ ihe pi0per iy pe of
oil.
OIL AND FUEL MIXING INSTRUCTIONS
Old and/or improperly mixed fuel are the 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.
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. It forms acids when stored. When using
alcohol-blended fuel, use fresh fuel (less than 60 days old).
Using Blended Fuels
If you choose to use a blended fuel, or its use is unavoidable,
follow recommended precautions:
• Always use the fresh fuel mix explained inyour operator's manual
• Always agitate the fuel mix before fueling the unit
• Drain the tank and run the engine dry before storing the unit
Using Fuel Additives
The bottle of 2-cycle oil that came with your unit contains a fuel
additive which will help inhibit corrosion and minimize the
formation of gum deposits. It is recommended that you use our 2-
cycle oil with this unit. If unavailable, use a good 2-cycle oil de-
signed for air-cooled engines along with a fuel additive, such as
STA-BIL _Gas Stabilizer or an equivalent. 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.
Thoroughly mix the proper ratio of 2-cycle engine oil with
CAUTION: For proper engine operation and
maximum reliability, pay strict attention to the oil and I
fuel mixing instructions on the 2-cycle oil container. I
Using improperly mixed fuel can severely damage
the eng ne.
I • ON/OFF STOP CONTROL
A * KEEP BYSTANDERS AWAY
_?;_"_ WARNING: Keep all bystanders, especially
unleaded gasoline in a separate fuel can. Use a 40:1 fuel/oil
ratio. Do not mix them directly in the engine fuel tank. See the
table below for specific gas and oil mixing ratios.
NOTE: One gallon (3.8 liters) of unleaded gasoline mixed with
one 3.2 oz. (95 ml.) bottle of 2-cycle oil makes a 40:1
fuel/oil ratio.
NOTE: Dispose of the old fuel/oil mix in accordance to
Federal, State and Local regulations.
UNLEADED GAS 2 CYCLE OIL
1 GALLONUS 3.2 FL. OZ.
(3.8 LITERS) (95 ml)
=,[
,a,[
=,[
ON / START/RUN
NTROL
FF or STOP
children and pets. at least 50 feet (15 m) from the
operating area.
• HOT SURFACE WARNING
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 t me after
the unit is turned off.
• 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.
1 LITER 25 ml
MIXING RATIO - 40:1
WARNING: Gasoline is extremely flammable.
Ignited vapors may explode. Always stop the engine
and allow itto cool before filling the fuel tank. Do not
smoke while filling the tank. Keep sparks and open
flames at a distance from the area.
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
outdoor area. Wipe up any spilled fuel immediately.
Avoid creating a source of ignition for spilt fuel. Do
not start the engine until fuel vapors dissipate.
APPLICATIONS
Asatrimmer:
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees, fences, etc.
Other optional accessories may be used with the YM20CS.
Refer to Operating the EZ-Link System for a list of add-ons.
Fuel Cap
Starter Rope
Shaft Grip
\
On/Off Stop Control
D-Handle
Line Cutting
Blade
Cutting Attachment
EZ-Link TM
Shaft
Housing
\
Cutting Attachment
Shield
/
Blue Choke
Lever
\
Engine Stand
Primer Bulb
Spark Plug
Air Filter/
Muffler
Cover
Muffler
INSTALLANDADJUSTTHED-HANDLE
1. Push the D-handle down onto the shaft housing so that the
handle slants towards the shaft grip (Fig. 1).The squared
bolt hole in the handle is to the right.
INSTALL THE cu'n'ING A'n'ACHMENT SHIELD
Use the following instructions if the cutting attachment shield
on your unit is not installed.
Shaft Grip
Shaft Housinc
Minimum 6 inches
(15.24 cm)
Bolt
Fig. 1
2. Insert the shoulder bolt into the squared hole in the handle
and push through. On the left side of the handle, place the
washer on the bolt, then screw the wing nut onto the bolt.
Do not tighten until you make the handle adjustment.
3. Rotate the D-handle to place the grip above the top of the
shaft housing. Place it a minimum of 6 inches (15.24 cm)
from the end of the shaft grip.
4. While holding the unit in the operating position
(Fig. 2), position the D-handle to the location that provides
you the best grip.
5. Tighten the wing nut until the D-handle is secure.
D-Handle
Tighten
Wing Nut
Washer
_IWARNING: Neveroperatethetrimmerwithout I
Place the cutting attachment shield onto the shaft housing.
Be sure the guard mounting bracket slides into the slot on the
edge of the cutting shield. Rotate the shield into place,
counterclockwise. The holes in the guard mounting bracket
and cutting attachment shield will line up (Fig. 3).
Cutting Attachment
2,
From insidethe cutting attachment shield, push the square bolt
through the hole until the threaded end protrudes through the
guard mounting bracket (Fig. 4).
the cutting attachment shield in place to prevent
serious personal injury.
Shaft Housing
Shield
Fig. 3
Guard
Mounting \ Washer
Bracket _ _/-
Guard
Mounting
Bracket
Fig. 2
-- ......... " Nut
,oo
Square Bolt tLLL_
Fig. 4
3. Put the washer on the bolt, then screw the wing nut onto
the bolt and tighten. Figure 5 shows the installation
process from underneath the unit.
Square Bolt
Cutting _ Hole
Wing Nut
Attachmen @_ washerShield
Cutting Attachment and Shield: Underside View
Fig. 5
OPERATINGTHEEZ-LINKTM SYSTEM
The EZ-Link TM system enables the use of these optional Add-
Ons.
Cultivator ................................... GC720r
Edger ....................................... LE720r
Hedge Trimmer ................................ TPAH*
Straight Shaft Trimmer ......................... SS725r
Turbo Blower ................................. TB720r
Pole Saw ..................................... TPPS*
Brushcutter ................................... TPBC*
*Do NOT use this attachment with an electric powered
)roduct.
WARNING: Before you begin using any
attachment, read and understand the manual that
came with the attachment. Follow all safety
information contained within.
Removing the Cutting Attachment or Add-Ons
2. While firmly holding the add-on, push it straight into the
EZ-Link TM coupler (Fig. 7).
NOTE: Aligning the release button with the guide recess will
help installation (Fig. 6).
3. Turn the knob clockwise to tighten (Fig. 8).
AIo,uzoo'oc thereease uttonntheI
primary hole (Fig. 7) and securely tighten the knob
before operating this unit.
90° Edge
Trimming Hole
I_, ARNING: To avoid serious personal injury and
1. Turn the knob counterclockwise to loosen (Fig. 6).
damage to the unit, shut the unit off before
removing or installing add-ons.
EZ-Link TM Coupler Release Button
\,,
Guide Recess
Fig. 6
2,
Press and hold the release button (Fig. 6).
3.
While firmly holding the upper shaft housing, pull the
cutting attachment or add-on straight out of the EZ-
Link TM coupler (Fig. 7).
Release Button
EZ-Link TM Coupler
Primary Hole
I
Fig. 8
CAUTION: The add-ons with the coupler system [
are to be used in the primary hole only. Using the [
wrong hole could lead to personal injury or damage[
to the unit. I
I
For decorative trimming/edging with the line head cutting
attachment, lock the release button of the cutting attachment
into the 90° hole (Fig. 8).
Upper Shaft Housing
Fig. 7
Installing the Cutting Attachment or Add-Ons
NOTE: To make installing or removing the add-on
1. Turn knob counterclockwise to loosen (Fig. 6).
easier, place the unit on the ground or on a work
bench.
Lower Shaft Housing
I_, ARNING: Operate this unit only in a well- I
STARTING INSTRUCTIONS
..........2. Fully press and release the primer bulb 10 times,
......................NOTE: Engine may take longer to warm up and reach
..................IF... the engine hesitates, return the blue choke lever to
......................IF... the engine does not start, go back to step 2.
STOPPING INSTRUCTIONS
1. Release your finger from the throttle control. Allow the
engine to cool down by idling.
2. Press and hold On/Off Stop Control in the OFF (O) position
until engine comes to a complete stop (Fig. 9).
ventilated outdoor area. Carbon monoxide exhaust
fumes can be lethal in a confined area.
WARNING: Avoid accidental starting. Make sure
you are in the starting position when pulling the I
starter rope (Fig. 11). To avoid serious injury, the I
operator and unit must be in a stable position while
starting.
1. Mix gas with oil. Fill fuel tank with fuel/oil mixture.
See Oil and Fuel Mixing Instructions.
NOTE: There is no need to turn the unit on. The
On/Off Stop Control is in the ON (I) position at all
times (Fig. 9).
slowly. Some amount of fuel should be visible in the
primer bulb and fuel lines (Fig. 10). 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.
3. Place the blue choke lever in Position 1 (Fig. 10).
4. Crouch in the starting position (Fig. 11), squeeze the
throttle control, and pull the starter rope out with a
controlled and steady motion 5 times.
NOTE: The unit uses Spring Assist Starting TM, which
significantly reduces the effort required to start the
engine. You must pull the starter rope out far enough
to hear the engine attempt to start. There is no need
to pull the rope briskly-- there is no harsh resistance
when pulling. Be aware that this starting method is
vastly different from (and much easier than) what you
may be used to.
5. Place the blue choke lever in Position 2 (Fig. 10).
6. While squeezing the throttle control, pull the starter
rope out with a controlled and steady motion until
the engine starts.
7. Keep the throttle squeezed and allow the engine to
warm up for 15 to 30 seconds.
maximum operating speed at colder temperatures.
NOTE: Unit is properly warmed up when engine
accelerates without hesitation.
8. Once the engine is warmed up, place the blue choke
lever in Position 3 (Fig. 10). The unit is ready for use.
Position 2 (Fig. 10) and continue warm-up.
IF... the engine fails to start after a few attempts, place
the blue choke lever in Position 3 and squeeze the
throttle control. Pull the starter rope out with a
controlled and steady motion 3 to 8 times. The
engine should start. If not, repeat.
IF WARM... If the engine is already warm, start the unit
with the blue choke lever in Position 2. After the unit
starts, move the blue choke lever to Position 3.
I
_.;___Stop/Off_(O) j
Start/On (I)
_ _ - ThornOtt io_
Fig. 9
_e
Lever
Primer
Bulb
Fig. 10
Starting
Position
Throttle Control
Fig. 11
HOLDING THE TRIMMER
I_, ARNING: Always wear eye, hearing, foot and
Before operating the unit, stand in the operating position (Fig.
12). Check for the following:
• The operator is wearing eye protection and proper clothing
• With a slightly-bent right arm, the operator's hand is
holding the shaft grip
• The operator's left arm is straight, the left hand holding the
D-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
ADJUSTING TRIMMING LINE LENGTH
The Bump Head TM 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. 13) while
operating the trimmer at high speed.
NOTE: Always keep the trimming line fully extended. Line
body protection to reduce the risk of injury when
operating this unit.
Fig. 12
release becomes more difficult when the cutting line
gets shorter.
NOTE: Do not rest the Bump Head TM on the ground while the
Some line breakage will occur from:
• Entanglement with foreign matter
I
• 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
• Keep the cutting attachment parallel to the ground.
• Do not force the cutting attachment. Allow the tip of the
• Cut grass over 8 inches (200 ram) by working from top to
• Cut from right to left whenever possible. Cutting to the left
• Slowly move the trimmer into and out of the cutting area at
• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon:
For example, the line will wear faster when trimming against a
foundation wall as opposed to trimming around a tree.
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. 14).
unit is running.
blade assembly. Excessive line length will make the
_[ AUTION: Do not remove or alter the line cutting
clutch overheat. This may lead to serious personal
injury or damage to the unit.
line to do the cutting, especially along walls. Cutting with
more than the tip will reduce cutting efficiency and may
overload the engine.
bottom in small increments to avoid premature line wear or
engine drag.
improves the unit's cutting efficiency. Clippings are thrown
away from the operator.
the desired height. Move either in a forward-backward or
side-to-side motion. Cutting shorter lengths produces the
best results.
• Following the trimming techniques
• What vegetation is being cut
• Where vegetation is cut
Fig. 13
Each time the head is bumped, about 1 inch (25.4 mm) of
trimming line releases. A blade in the cutting attachment shield
will cut the line to the proper length if any excess line is
released.
For best results, tap the bump knob on bare ground or hard
soil. If you attempt a line release in tall grass, the engine may
stall. Always keep the trimming line fully extended. Line release
becomes more difficult when the cutting line gets shorter.
Fig. 14
MAINTENANCE SCHEDULE
WARNING: To prevent serious injury, never
perform maintenance or repairs with unit running.
Always service and repair a cool unit. Disconnect
the spark plug wire to ensure that the unit cannot
start.
Perform these required maintenance procedures at the frequency
stated inthe table. These procedures should also be a part of any
seasonal tune-up.
NOTE: Some maintenance procedures may require special tools
NOTE: Maintenance, replacement, or repair of the emission
In order to assure peak performance ofyour engine, inspection of the
engine exhaust port may be necessary after 50 hours of operation. If
you notice lost RPM, poor performance or general lack of
acceleration, this service may be required. Ifyou feel your engine isin
need ofthis inspection, refer service to any non-road engine repair
establishment, individual or authorized service dealerfor repair. DO
NOT attempt to perform this process yourself as engine damage may
result from contaminants involved in the cleaning process for the port.
or skills. Ifyou are unsure about these procedures take
your unit to any non-road engine repair establishment,
individual or authorized service dealer.
control devices and system may be performed by any
non-road engine repair establishment, individual or
authorized service dealer.
Bolt
Bump Knob TM
Fig. 15
Outer Spool
Spring
FREQUENCY MAINTENANCE REQUIRED REFER
Before starting Fill fuel tank with fresh fuel Page 3
Every 10 hours Clean and re-oil air filter Page 11
Check and clean spark arrestor Page 11
Every 25 hours Check spark plug condition Page 12
and gap
Inspect exhaust port and spark
Every 50 hours arrestor screen for clogging or Page 11
LINE INSTALLATION
This section covers both SplitLine TM and standard single line
installation.
Always use original equipment manufacturer 0.095 in. (2.41 mm)
replacement line. Line other than the specified may make the
engine overheat or fail.
I,_ WARNING: Never use metal-reinforced line' I
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 TM counterclockwise (Fig. 15). Inspect the bolt inside
the Bump Knob to make sure it moves freely. Replace the
Bump Knob if damaged.
2. Remove the inner reel from the outer spool (Fig. 16).
3. Remove spring from the inner reel (Fig. 16).
4. Use a clean cloth to clean the the inner reel, spring, shaft,
and inner surface of the outer spool.
5. Check the indexing teeth on the inner reel and outer spool
for wear (Fig. 17). If necessary, remove burrs or replace the
reel and spool.
obstruction to assure
maximum performance levels
wire, chain or rope. These can break off and
become dangerous projectiles.
Inner Reel
Fig. 16
Indexing Teeth
Fig. 17
NOTE:
NOTE: Always use the correct line length when installing
SplitLine TM 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 18 to identify the inner
reel you have.
For Use with Single
Line ONLY
Slotted
Holes
Fig. 18
trimming line on the unit. The line may not release
properly if the line is too long.
For Use with SplitLine TM
or Single Line
Single Line Installation
Go To Step 8 for SplltLine TM Installation
6. Take approximately 18 feet (5.4 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. 19). Pull
the line through the inner reel so that the loop is as small
as possible.
Loop
Fig. 19
7,
Wind the lines in tight even layers, onto the reel
(Fig. 20). 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.
12. Insert the ends of the line into the two holding slots (Fig. 22).
Holding SIots
Fig. 22
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. 23). 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. 20
SplitLine TM Installation
8. Take approximately 9 feet (2.7 m) of new trimming line.
Insert one end of the line through one of the two holes in
the inner reel (Fig. 21). Pull the line through the inner reel
until only about 4 inches is left out.
Loop
Fig. 21
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. 21).
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.
Spring
Fig. 23
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 clockwise. Tighten securely.
INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew the bump
knob counterclockwise (Fig. 15). 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. 16).
3. Remove the spring from the old inner reel
(Fig. 16).
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. 23).
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 clockwise. Tighten securely.
10
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
I_ WARNING: T° av°id seri°us pers°nal injury, I
1. Place the blue choke lever in Position 2.
2. Remove the four (4) screws securing the air filter/muffler
cover (Fig. 24). Use a flat blade or T20 Torx bit screwdriver.
3. Pull the cover from the engine. Do not force.
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 your air filter
properly can result in poor performance or can cause
permanent damage to your engine.
1. Remove air filter/muffler cover. Refer to Removing the Air
Filter/Muffler Co ver.
2. Turn cover over and look inside to locate the air filter.
Remove the air filter from inside the air filter/muffler cover
(Fig. 25).
3. Wash the filter in detergent and water (Fig. 26). Rinse the
filter thoroughly. Squeeze out excess water. Allow it to dry
completely.
always turn your unit off and allow it to cool before
you clean or service it.
Blue Choke
Lever
Screws
Fig. 24
/
Fig. 27
Reinstalling the Air Filter/Muffler Cover
1. Place the air filter/muffler cover over the back of the
carburetor and muffler. Align the screw holes.
2. Insert the four (4) screws into the holes in the air
filter/muffler cover (Fig. 24) and tighten.
Do not over tighten.
SPARK ARRESTOR MAINTENANCE
1. Remove air filter/muffler cover. Refer to Removing the Air
Filter/Muffler Cover.
2. Locate the muffler, but do not remove it. Find the screw on
the bottom of the muffler (Fig. 29). Remove the screw using
either a torx #20 or flat blade screwdriver.
Spark Arrestor
Hood
Screw
Spark Arrestor
Tabs Screen
Slots
Fig. 28
Engine
Muffler
Air Filter
f !! !I I_
Inside Muffler
Cover
Fig. 25 Fig. 26
4. Apply enough clean SAE 30 oil to lightly coat the filter (Fig. 27).
5. Squeeze the filter to spread and remove excess oil (Fig. 28).
6. Replace the air filter inside the air filter/muffler cover (Fig. 25).
NOTE: Operating the unit without the air filter and air
filter/muffler cover assembly will VOID the warranty.
Fig. 29
3.
Carefully pry up the left side spark arrestor hood. Two tabs
act as hinges on the right side of the hood. Flip open the
spark arrestor hood like a door and then pull its tabs out of
the muffler slots.
4.
Using a small flat blade screwdriver, carefully pry the spark
arrestor screen out from the inside of the spark arrestor hood.
5.
Clean the spark arrestor screen with a wire brush. Replace it
if it is damaged, or if you are unable to clean it thoroughly.
6.
Reinstall the spark arrestor screen snugly back into the
spark arrestor hood.
7.
Reinstall the two hood tabs into the two muffler slots and
flip the spark arrestor hood closed.
8.
Replacethe screw you removed in Step 2 and tighten it securely.
9.
Reinstall the air filter/muffler cover.
WARNING: Ifthe spark arrestor hood and spark
arrestor screen are not tightened securely, they could
A[
fall off causing damage to the unit and possible
serious personal injury.
11
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable through the air
filter/muffler cover (Fig. 30).
NOTE: Careless adjustments can seriously damage your unit.
An authorized service dealer should make carburetor
adjustments.
2. Clean around the spark plug. Remove the spark plug from
the cylinder head by turning a 5/8-inch socket
counterclockwise.
3. Replace a cracked, fouled or dirty spark plug. Set the air gap at
0.025 in. (0.635 ram) using afeeler gauge (Fig. 31).
Idle Speed Screw
Fig. 30
Check Fuel Mixture
Old and/or improperly mixed fuel is usually the reason for
improper unit performance. Drain and refill the tank with fresh,
properly-mixed fuel prior to making any adjustments. Refer to
Off and Fuel Information.
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
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. Refer to Starting/Stopping Instructions.
WARNING: The cutting attachment may spin
during idle speed adjustments. Wear protective
clothing and observe all safety instructions to prevent
serious personal injury.
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.
30). 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 mixture, 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.
I_, ARNING: To prevent serious personal injury,
REPLACING THE SPARK PLUG
Use a Champion RDJ7Y spark plug, or equivalent. The correct air
gap is 0.025 inch (0.635 ram). 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 boot from the spark plug.
make sure the cutting attachment has stopped
rotating before you turn it off and set it down.
_'1 WARNING: Do not sand blast, scrape or clean I
4. Install a correctly-gapped spark plug in the cylinder head.
Tighten by turning the 5/8-inch socket clockwise until snug.
If using a torque wrench torque to 110-120 in.olb. (12.3-13.5
Nora). Do not over tighten.
CLEANING
AIw,°..o=Toavoidseous esonainu I
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 a fueled unit 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 you plan on storing the unit for an extended time, use the
following storage procedure:
1. Drain all fuel from the fuel tank 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
4. Thoroughly clean the unit and inspect it for any loose or
I
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.
• Drain fuel from unit.
• Tighten fuel cap before transporting.
• Secure the unit while transporting.
electrodes. Grit in the engine could damage the
cylinder.
0.025 in.
(0.635 mm)
Fig. 31
always turn your trimmer off and allow itto cool
before you clean or maintain it.
cylinder before attempting to start the trimmer after storage.
I
12
CAUSE
Emptyfueltank
ACTION
Fillfueltankwithproperlymixedfuel
Engineisflooded
Fouledsparkplug
Theoutsidetemperatureisbelow40°F
CAUSE
Airfilterisplugged
Impropercarburetoradjustment
CAUSE
Oldorimproperlymixedfuel
Cuttingattachmentboundwithgrass
Placebluechokeleverinposition3,squeezethetriggerand
pullthestarterrope
Replaceorcleanthesparkplug
Placebluechokeleverinposition3,pullthestarterropeupto
10-15times
ACTION
Replaceorcleantheairfilter
AdjustaccordingtotheCarburetor Adjustments section or take
to an authorized service dealer for an adjustment
ACTION
Drain gas tank and add fresh fuel mixture
Stop the engine and clean the cutting attachment
Pluggedsparkarrestor
CAUSE
Old or improperly mixed fuel
Fouled spark plug
CAUSE
Cutting attachment bound with grass
Inner reel bound up
Line welded
Not enough line is exposed
CAUSE
Oil, cleaner or lubricant in cutting head
Clean or replace spark arrestor
ACTION
Drain gas tank and add fresh fuel mixture
Replace or clean the spark plug
ACTION
Stop the engine and clean cutting attachment
Replace the inner reel
Disassemble, remove the welded section and rewind
Push the bump knob and pull out line until 4 inches (102 mm) of
line is outside of the cutting attachment
ACTION
Clean and thoroughly dry the cutting head
If further assistance is required, contact your authorized service dealer.
13
EngineType...............................................................................................................................................................Air-Cooled,2-Cycle
Stroke.........................................................................................................................................................................1.25in.(31.75mm)
Displacement..................................................................................................................................................................1.9cuin.(31cc)
ClutchType...............................................................................................................................................................................Centrifugal
IdleSpeedRPM............................................................................................................................................................2,600-3,600rpm
OperatingRPM.......................................................................................................................................................................6,800+rpm
IgnitionType...............................................................................................................................................................................Electronic
IgnitionSwitch...................................................................................................................................................................RockerSwitch
SparkPlugGap........................................................................................................................................................0.025in.(0.635mm)
Lubrication........................................................................................................................................................................Fuel/OilMixture
Fuel/OilRatio.......................................................................................................................................................................................40:1
Carburetor............................................................................................................................................................Diaphragm,All-Position
Starter.............................................................................................................................................SpringAssistStartingTM Auto Rewind
Muffler .......................................................................................................................................................................... Baffled with Guard
Throttle .................................................................................................................................................................... Manual Spring Return
Fuel Tank Capacity ............................................................................................................................................................ 13 oz. (384 ml)
Drive Shaft Housing .............................................................................................................................................. Steel Tube (EZ-Link TM)
Throttle Control .............................................................................................................................................................. Finger-Tip Trigger
Approximate Unit Weight (No fuel, with cutting attachment, shield, and D-handle) ........................................................... 13 Ibs. (6 kg)
Cutting Mechanism ............................................................................................................................................................ Bump Head TM
Line Spool Diameter ................................................................................................................................................... 3 inches (76.2 mm)
Trimming Line Diameter ....................................................................................................................................... 0.095 inches (2.41 mm)
Cutting Path Diameter .............................................................................................................................................. 17 inches (43.18 cm)
*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.
14
15
MANUFACTURER'S LIMITED WARRANTY FOR:
The limited warranty set forth below is given by Yard-Man LLC
("Yard-Man") with respect with new merchandise purchased
and used in the United States, its possessions and territories.
Yard-Man 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 Yard-Man 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 Yard-Man product that is used
for rental or commercial purposes, or any other income-
producing 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 Yard-Man by calling 1-
800-800-7310 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 Yard-Man.
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. Yard-Man 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
Yard-Man's authorized channels of export distribution.
Yard-Man reserves the right to change or improve the design
of any Yard-Man 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
Yard-Man. 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. Yard-
Man 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 1-800-800-7310 in
the United States or 1-800-668-1238 in Canada.
Yard-Man LLC
RO. Box 361131
Cleveland, OH 44136-0019
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