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Operator’s Manual
22 Inch Walk-Behind
String Trimmer
Model No. CMXGCAQ108493
CAUTION: Before using this product,
read this manual and follow all safety
rules and operating instructions.
Sears Brands Management Corporation, Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.craftsman.com
• SAFETY
• UNPACKING
• ASSEMBLY
• OPERATION
• MAINTENANCE
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TABLE OF CONTENTS
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Safety Instructions ................ Page 3
Assembly . . . . . . . . . . . . . . . . . . . . . . . Page 7
Operation. . . . . . . . . . . . . . . . . . . . . . Page 10
Maintenance ................... Page 18
PRODUCT SPECIFICATIONS MODEL NUMBER
Engine: Kohler XT6.75, 149CC
Engine Speed: 3600 RPM
Cutting Width: 22 inches
Cutting Height: 5 Heights 1.5 - 3.5”
Cutting Speed: 3800 RPM
Cutting Line: .155” dia. (4mm) x 19” length
Wheel Size: 14” x 1.75” width
Frame: 14 Gauge Steel
Trimmer Ball: 4” dia., 4” heat treated cutting blade
Drive Belt: V-Belt, 3L440
Dimensions: 50.4” L x 21.5” W x 38.3” H
Shipping Weight: 67 Lbs.
Off-Season Storage . . . . . . . . . . . . . . . Page 21
Troubleshooting ................. Page 22
Under License .................. Page 32
Model Number
Serial Number
Date of Purchase
Record the model number, serial number,
and date of purchase above.
Denitions: Safety Alert Symbols and Words
This instruction manual uses the following safety alert symbols and words to alert you to hazardous situations
and your risk of personal injury or property damage.
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
(Used without word) Indicates a safety related message.
NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.
READ AND UNDERSTAND INSTRUCTION MANUAL: To reduce the risk of injury, user and all
bystanders must read and understand instruction manual before using this product.
SAVE THESE INSTRUCTIONS FOR FUTURE USE
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SAFETY INSTRUCTIONS
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WARNING
This symbol points out important safety instructions
which, if not followed, could endanger the personal
safety and/or property of yourself and others. Read and
follow all instructions in this manual before attempting
to operate this string trimmer. Failure to comply with
these instructions may result in personal injury. When
you see this symbol, HEED ITS WARNING!
WARNING
CALIFORNIA PROPOSITION 65
Engine Exhaust, some of its constituents, and certain
vehicle components contain or emit chemicals known to
State of California to cause cancer and birth defects or
other reproductive harm.
GENERAL OPERATION
a. Read this operator’s manual carefully in its entirety before
attempting to assemble this string trimmer. Read, understand,
and follow all instructions on the string trimmer and in the
manuals before operation. Keep this manual in a safe place for
future and regular reference and for ordering replacement parts.
b. Be completely familiar with the controls and the proper use of
this string trimmer before operating it.
c. This string trimmer is a precision piece of power equipment, not
a plaything. Therefore, exercise extreme caution at all times.
This string trimmer has been designed to perform one job: to
mow grass. Do not use it for any other purpose.
d. Never allow children under 14 years of age to operate this string
trimmer. Children 14 and over should read and understand the
instructions and safe operation practices in this manual and on
the string trimmer and should be trained and supervised by an
adult.
e. Only responsible individuals who are familiar with these rules of
safe operation should be allowed to use this string trimmer.
f. Thoroughly inspect the area where the equipment is to be used.
Remove all stones, sticks, wire, bones, toys and other foreign
objects, which could be tripped over or picked up and thrown
by the trimmer line. Thrown objects can cause serious personal
injury.
g. Plan your trimming operation to avoid discharge of material
toward roads, sidewalks, bystanders and the like. Also, avoid
discharging material against a wall or obstruction, which may
cause discharged material to ricochet back toward the operator.
h. To help avoid trimmer line contact or a thrown object injury, stay
in operator zone behind handles and keep children, bystanders,
helpers and pets at least 75 feet from trimmer while it is in
operation. Stop the string trimmer if anyone enters area.
i. Always wear safety glasses or safety goggles during operation
and while performing an adjustment or repair to protect your
eyes. Thrown objects which ricochet can cause serious injury to
the eyes.
j. Wear sturdy, rough-soled work shoes and close-tting slacks and
DANGER
This string trimmer was built to be operated according to
the safe operation practices in this manual. As with any
type of power equipment, carelessness or error on the
part of the operator can result in serious injury. This ma-
chine is capable of amputating ngers, hands, toes and
feet and throwing debris. Failure to observe the following
safety instructions could result in serious injury or death.
WARNING
Your Responsibility—Restrict the use of this power machine
to persons who read, understand and follow the warnings
and instructions in this manual and on the string trimmer.
SAVE THESE INSTRUCTIONS!
shirts. Shirts and pants that cover the arms and legs and steeltoed shoes are recommended. Never operate this string trimmer
in bare feet, sandals, slippery or light-weight (e.g. canvas) shoes.
k. Do not put hands or feet near rotating parts or under the cutting
deck. Contact with cutting line can amputate ngers, hands,
toes and feet.
l. A missing or damaged discharge cover can cause cutting line
contact or thrown object injuries.
m. Many injuries occur as a result of the trimmer being pulled
over the foot during a fall caused by slipping or tripping. Do
not hold on to the trimmer if you are falling: release the handle
immediately.
n. Never pull the trimmer back toward you while you are walking.
If you must back the trimmer away from a wall or obstruction,
rst look down and behind to avoid tripping and then follow
these steps:
1. Step back from trimmer to fully extend your arms forward.
2. Be sure you are well balanced with sure footing.
3. Pull the trimmer back slowly, no more than half way toward
you.
4. Repeat these steps as needed.
o. Do not operate the trimmer while under the inuence of alcohol
or drugs.
p. The safety control bar is a safety device. Never attempt to bypass
its operation. Doing so makes the safety device inoperative
and may result in personal injury through contact with the
cutting line. The safety control bar must operate easily in both
directions and automatically return to the disengaged position
when released.
q. Never operate the trimmer in wet grass. Always be sure of your
footing. A slip and fall can cause serious personal injury. If you
feel you are losing your footing, release the safety control bar
immediately and the cutting line will stop rotating within three
seconds.
r. Operate only in daylight or good articial light. Walk, never run.
s. Release the safety control bar when crossing gravel drives, walks
or roads.
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SAFETY INSTRUCTIONS
t. If the equipment should start to vibrate abnormally, stop the engine
and check immediately for the cause. Vibration is generally a
warning of trouble.
u. Shut the engine off and wait until the blade comes to a complete
stop before removing the grass catcher or unclogging the chute.
The cutting blade continues to rotate for a few seconds after the
blade control is released. Never place any part of the body in the
blade area until you are sure the blade has stopped rotating.
v. Never operate the string trimmer without proper shield, discharge
cover, grass catcher, blade control handle or other safety protective
devices in place and working. Never operate string trimmer with
damaged safety devices. Failure to do so can result in personal
injury.
w. Mufer and engine become hot and can cause a burn. Do not
touch.
x. Never attempt to make a wheel or cutting height adjustment while
the engine is running.
y. Only use parts and accessories made for this string trimmer by
the manufacturer as listed in the Parts pages of this Operator’s
Manual. Failure to do so can result in personal injury.
z. When starting engine, pull cord slowly until resistance is felt, then
pull rapidly. Rapid retraction of starter cord (kickback) will pull
hand and arm toward engine faster than you can let go. Broken
bones, fractures, bruises or sprains could result.
aa. If situations occur which are not covered in this manual, use care
and good judgement.
SLOPE OPERATION
Slopes are a major factor related to slip and fall accidents, which can
result in severe injury. Operation on slopes requires extra caution.
The string trimmer is heavy and can speed up when going downhill.
Be prepared to maintain control of the string trimmer. If you feel
uneasy on a slope, do not mow it. For your safety, use the slope
gauge included as part of this manual to measure slopes before
operating this string trimmer on a sloped or hilly area. If the slope is
greater than 15 degrees, do not mow it.
Do:
a. Operate across the face of slopes; never up and down to avoid loss
of control.
b. Exercise extreme caution when changing direction on slopes; turn
uphill not down.
c. Watch for holes, ruts, rocks, hidden objects, or bumps which can
cause you to slip or trip. Tall grass can hide obstacles.
d. Always be sure of your footing. A slip and fall can cause serious
personal injury. If you feel you are losing your balance, release
the safety control bar immediately and the cutting line will stop
rotating within three (3) seconds.
Do Not:
a. Do not trim near drop-offs, ditches or embankments, because you
could lose your footing or balance.
b. Do not trim slopes greater than 15 degrees as shown on the slope
guide.
c. Do not trim on wet grass. Unstable footing could cause slipping.
CHILDREN
Tragic accidents can occur if the operator is not alert to the presence
of children. Children are often attracted to the string trimmer and
the trimming activity. They do not understand the dangers. Never
assume that children will remain where you last saw them.
a. Keep children out of the trimming area and under watchful care of
a responsible adult other than the operator.
b. Be alert and turn string trimmer off if a child enters the area.
c. Before and while moving backwards, look behind and down for
small children.
d. Use extreme care when approaching blind corners, doorways,
shrubs, trees, or other objects that may obscure your vision of a
child who may run into the string trimmer.
e. Keep children away from hot or running engines. They can suffer
burns from a hot mufer.
f. Never allow children under 14 years of age to operate the string
trimmer. Children 14 and over should read and understand the
instructions and safe operation practices in this manual and on the
string trimmer and be trained and supervised by an adult.
SERVICE
Safe Handling of Gasoline:
To avoid personal injury or property damage use extreme care in
handling gasoline. Gasoline is extremely ammable and the vapors are
explosive. Serious personal injury can occur when gasoline is spilled
on yourself or your clothes which can ignite. Wash your skin and
change clothes immediately.
a. Use only an approved gasoline container.
b. Never ll containers inside a vehicle or on a truck or trailer bed
with a plastic liner. Always place containers on the ground away
from your vehicle before lling.
c. Remove gas-powered equipment from the truck or trailer and
refuel it on the ground. If this is not possible, then refuel such
equipment on a trailer with a portable container, rather than from
a gasoline dispenser nozzle.
d. Keep the nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is complete. Do not use
a nozzle lock-open device.
e. Extinguish all cigarettes, cigars, pipes and other sources of
ignition.
f. Never fuel the string trimmer indoors because ammable vapors
will accumulate in the area.
g. Never remove gas cap or add fuel while engine is hot or running.
Allow engine to cool at least two minutes before refueling.
h. Never over-ll fuel tank. To allow for expansion of the fuel, do not
ll above the bottom of the fuel tank neck.
i. Replace gasoline cap and tighten securely.
j. If gasoline is spilled, wipe it off the engine and equipment. Move
the string trimmer to another area. Wait 5 minutes before starting
engine.
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SAFETY INSTRUCTIONS
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Never store the string trimmer or fuel container near an open ame,
spark or pilot light as on a water heater, space heater, furnace,
clothes dryer or other gas appliances.
a. To reduce re hazard, keep string trimmer free of grass, leaves, or
other debris build-up. Clean up oil or fuel spillage and remove any
fuel-soaked debris.
b. Allow string trimmer to cool at least 5 minutes before storing.
General Service:
a. Never run an engine indoors or in a poorly ventilated area. Engine
exhaust contains carbon monoxide, an odorless and deadly gas.
b. Before cleaning, repairing, or inspecting, make certain the blade
and all moving parts have stopped. Disconnect the spark plug wire
and ground against the engine to prevent unintended starting.
c. Check the blade and engine mounting bolts at frequent intervals
for proper tightness. Also, visually inspect blade for damage (e.g.,
bent, cracked, worn). Replace blade with the original equipment
manufacturer’s (O.E.M.) blade only, listed in the Parts pages of
this manual. Use of parts which do not meet the original equip-
ment specications may lead to improper performance and
compromise safety!
d. String trimmer blades are sharp and can cut. Wrap the blade or
wear gloves, and use extra caution when servicing them.
e. Keep all nuts, bolts, and screws tight to be sure the equipment is
in safe working condition.
f. Never tamper with safety devices. Check their proper operation
regularly.
g. After striking a foreign object, stop the engine, disconnect the
spark plug wire and ground against the engine. Thoroughly
inspect the string trimmer for any damage. Repair the damage
before starting and operating the string trimmer.
h. Never attempt to make a wheel or cutting height adjustment while
the engine is running.
i. Grass catcher components, discharge cover, and trail shield are
subject to wear and damage which could expose moving parts or
allow objects to be thrown. For safety protection, frequently check
components and replace immediately with original equipment
manufacturer’s (O.E.M.) parts only, listed in the Parts pages of this
manual. Use of parts which do not meet the original equipment
specications may lead to improper performance and compromise
safety!
j. Do not change the engine’s governor setting or over-speed the
engine. The governor controls the maximum safe operating speed
of the engine.
k. Check fuel line, tank, cap, and ttings frequently for cracks or
leaks. Replace if necessary.
l. Do not crank engine with spark plug removed.
m. Maintain or replace safety and instruction labels, as necessary.
n. Observe proper disposal laws and regulations. Improper disposal
of uids and materials can harm the environment.
o. According to the Consumer Products Safety Commission (CPSC)
and the U.S. Environmental Protection Agency (EPA), this product
has an Average Useful Life of seven (7) years, or 140 hours of
operation. At the end of the Average Useful Life have the string
trimmer inspected annually by a Sears or other qualied service
dealer to ensure that all mechanical and safety systems are working properly and not worn excessively. Failure to do so can result
in accidents, injuries or death.
DO NOT MODIFY ENGINE
To avoid serious injury or death, do not modify engine in any way.
Tampering with the governor setting can lead to a runaway engine
and cause it to operate at unsafe speeds. Never tamper with factory
setting of engine governor.
NOTICE REGARDING EMISSIONS
Engines which are certied to comply with California and federal
EPA emission regulations for SORE (Small Off Road Equipment) are
certied to operate on regular unleaded gasoline, and may include
the following emission control systems: Engine Modication (EM),
Oxidizing Catalyst (OC), Secondary Air Injection (SAI) and Three Way
Catalyst (TWC) if so equipped.
SPARK ARRESTOR
WARNING
This machine is equipped with an internal combustion
engine and should not be used on or near any unimproved
forest-covered, brush covered or grass-covered land unless
the engine’s exhaust system is equipped with a spark arrestor meeting applicable local or state laws (if any).
If a spark arrestor is used, it should be maintained in effective
working order by the operator. In the State of California the above
is required by law (Section 4442 of the California Public Resources
Code). Other states may have similar laws. Federal laws apply on
federal lands. A spark arrestor for the mufer is available through
your nearest Sears Parts and Repair Service Center.
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SAFETY INSTRUCTIONS
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SAFETY SYMBOLS
This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all
instructions on the string trimmer before attempting to assemble and operate.
Symbol Description
READ THE OPERATOR’S MANUAL(S)
Read, understand, and follow all instructions in the manual(s) before attempting to
assemble and operate.
DANGER —WEAR EYE PROTECTION
To reduce the risk of eye injury, wear protective eye ware, goggles or glasses.
DANGER —SHARP CUTTING LINE
To reduce the risk of injury, keep hands and feet away. Do not operate unless the
discharge cover is in its proper place. If damaged, replace immediately.
DANGER — DO NOT OPERATE NEAR OTHER PEOPLE
The string trimmer may eject objects at high speed. Use caution when operating around
children, pets and other adults.
DANGER — MAY EJECT ITEMS AT HIGH SPEED
The string trimmer may eject objects at high speed. Use caution when operating around
children, pets and other adults.
DANGER — USE CAUTION ON SLOPES
The string trimmer is heavy and can speed up when going downhill. To avoid loss of
control, operate across slopes, not up and down. When turning, turn uphill, not down. Do
not operate on slopes greater than 15°.
DANGER — GASOLINE IS FLAMMABLE
Allow the engine to cool at least ve minutes before refueling. Never smoke, use matches
or lighters in the immediate vicinity of the string trimmer.
DANGER — CARBON MONOXIDE
Carbon Monoxide from engine exhaust is a deadly poisonous, odorless and colorless gas.
Never run the engine in an enclosed space or poorly ventilated area. Carbon Monoxide
can render a person unconscious in a matter of minutes.
DANGER — HOT SURFACES
Engine parts, especially the mufer and other exhaust components, can become
extremely hot during operation. Use caution to avoid severe burns. Allow the engine to
cool down before performing any maintenance.
WARNING: Your Responsibility—Restrict the use of this power machine to persons who read,
understand and follow the warnings and instructions in this manual and on the string trimmer.
SAVE THESE INSTRUCTIONS!
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ASSEMBLY
IMPORTANT: This unit is shipped without gasoline or oil in
the engine. Be certain to ll engine with gasoline and oil
as instructed in the Operation section of the Engine Manual
before starting or running your string trimmer.
List of tools needed for assembly:
• 13mm wrench
• (2) 10mm wrenches
OPENING CARTON
1. Cut each corner of the carton vertically from top to
bottom.
2. Remove all loose parts.
3. Remove loose packing material.
REMOVING UNIT FROM CARTON
1. Remove wheels, manuals and extra trimming line from
box (see Figure 1). With assistance, lift the trimmer
out of box and set on a level surface.
2. Attach wheels to the trimmer axle using nuts and
washers (see gure 2).
Figure 1
1
2
3
Figure 2
Item # Part # Description Qty.
1 101094 Trimmer Wheel Assembly 2
2 100130 Flat Washer, M8 2
3 100128 Hex Nut, Nylock, M8 x 1.25mm, G8.8 2
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4. Flip upper handlebar up to the operating position.
Loosen both adjustment knobs (see Figure 3) and
align the upper handlebar both sides to a comfortable
operating position. Tighten the adjustment knobs
securely. It is important to nd a handlebar height
that allows the cutting head to hover just above the
ground and remain balanced so you do not have to
push down or pull up on the handlebar.
ASSEMBLY
UPPER
HANDLEBAR
ADJUSTMENT
LOWER
HANDLEBAR
KNOB
NOTCHES IN
ALIGNMENT
SAFETY
CONTROL
BAR
RECOIL
STARTER
HANDLEBAR
ADJUSTMENT
THROTTLE
Figure 3
GASOLINE FUEL
FILL
OIL FILL
CUTTING HEAD
GUARD
CUTTING CORD
CUTTING
HEAD
String trimmer Components
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ASSEMBLY
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INSTALLING THE CUTTING LINE
There are two installation points on the line plate. Each
point is 180 degrees apart. Always install two lines,
one opposite the other of the same length and weight
(diameter).
1. Insert the end of the cord into the side openings in the
line plate (see Figure 4).
2. Push the cord through until the end comes out the
center hole in the line plate. Adjust the cord ends so
the tips are of equal length.
3. Pull the cord under the loop and push the loop up into
the line plate groove above them (see Figure 5) and
then pull the cord ends tight.
CAUTION
If the tips of the cutting cords are not of equal length,
it can cause unbalance of the cutting head and will
result in increased vibration and potential damage
to the cutting head.
Figure 6 illustrates the proper cord installation on the
line plate. It shows the line plate from a top view. The
cord ends should be of equal length and the same length
on each side. There are two installation points on the line
plate. Each point is 180 degrees apart. Always install
two cords, one opposite the other of the same length and
weight (diameter).
Figure 4
Figure 6
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Figure 5
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FILLING WITH OIL AND GASOLINE
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OPERATION
WARNING
ADD OIL BEFORE STARTING THE ENGINE
The string trimmer is shipped without uids installed.
Keep the caps on the fuel and oil lls until you are ready
to pour either gasoline or oil into the correct ll. Requires
approximately 15 - 22 ounces of SAE 30 engine oil.
Please refer to your Engine Owner’s Manual for detailed
information on oil quantity and cold temperature oil
specications.
1. Place the string trimmer on a level surface and initially
add 1/2 of the SAE 30 high detergent oil into the oil ll
(see Figure 7) and wait one (1) minute for the oil to
settle.
2. Check the dipstick and continue adding a few ounces
of oil at a time, rechecking the dipstick until the oil
reaches the ll mark. Be careful not to overll.
3. Fill the fuel tank with fresh, unleaded gas (min. 85
Octane), to 1/4” from the top of the ll neck to allow
for expansion. Be careful not to overll and reinstall
the cap before starting the engine.
OIL FILL
FUEL FILL
Figure 7
WARNING
ALWAYS FILL THE TANK WITH ENGINE OFF AND COOL.
ALWAYS CHECK THE OIL LEVEL BEFORE OPERATING.
Allow the engine to cool for at least two minutes before
removing the fuel cap.
Before performing any adjustments to the cutting head,
cutting cords or any other procedure or inspection, stop
the engine, wait ve minutes to allow parts to cool.
Disconnect the spark plug wire, keeping it away from the
spark plug. Contact with internal rotating parts will cause
serious personal injury. Never put hands, face, feet,
or clothing under the string trimmer deck or discharge
opening at any time.
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OPERATION
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CAUTION
CHECK THE ENGINE OIL LEVEL Check fuel level.
Remove any debris from around the underside of the string
trimmer.
Manual Starting
1. Push the throttle control lever on the right side of the
handlebar (see Figure 8) all the way forward (choke
position).
2. Grasp the recoil starter and slowly pull until you feel
resistance. Let the cord retract a little bit and then
pull the cord rapidly to start the engine. One or two
pulls usually starts the string trimmer. Do not engage the
safety bar until after the engine has started.
3. Once the engine is started, move the throttle lever to
the RUN or IDLE position.
If the engine fails to start after several pulls of the recoil
starter, allow the motor to cool down. Check the cause of
hard starting; see the Troubleshooting Guide (page 22).
THROTTLE
CONTROL
RECOIL
STARTER
Stopping the Engine
1. Move the throttle control lever (see Figure 8) all
the way back past the SLOW position to the STOP
position.
Engaging the Cutting Head
1. Bring the safety bar toward you and grip it together
with the handlebar. Cutting cords rotate until you
release the safety bar.
Note: Before using your cutting head for the rst time or
after you have installed a new belt, engage the safety bar
10 times and hold it for 3 seconds each time.
Stopping the Lines from Spinning
1. Release the safety bar from the handlebar. The cutting
head will stop spinning while the engine continues to
run.
Figure 8
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OPERATION
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SETTING THE CUTTING HEIGHT
CAUTION
BEFORE PERFORMING ANY ADJUSTMENT, MAINTENANCE
PROCEDURE OR INSPECTION, STOP THE ENGINE, WAIT FIVE
(5) MINUTES TO ALLOW PARTS TO COOL AND DISCONNECT
THE SPARK PLUG WIRE, KEEPING IT AWAY FROM THE
SPARK PLUG.
Setting the cutting height is easy. Cutting heights range in
10mm (0.4 in).
WARNING
RUNNING THE CUTTING HEAD WITH CORDS OF UNEQUAL
LENGTH OR A CORD INSTALLED AT OTHER THAN 180
DEGREES APART CAN CAUSE EXCESSIVE VIBRATION AND
MAY DAMAGE THE STRING TRIMMER.
Installing the trimming line
After you install cutting cord, and before trimming, engage
the cutting head with the engine running to spin the new
cord for a few seconds so they pull tight and are set.
1. Insert the ends of the cord into the side opening in the
line plate (see Figure 10).
2. Push the cord through until the ends come out the
center opening in the line plate. Adjust the cord ends so
they are even.
3. Pull the ends of the cord under the loop and push the
loop up into the line cord ends plate groove above them
(see Figure 11) and then pull the ends tight.
3.5”
3.1”
2.7”
2.3”
1.9”
Figure 9
Figure 10
Figure 11
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OPERATION
CUTTING CORD RECOMMENDATIONS
Cutting cord is available in Blue (175 mil) and Green
(155 mil). Because conditions and vegetation vary
so much, you should experiment with cord weights
(diameters) to discover what works best for your
particular mowing and trimming situations.
Here are a few things to keep in mind:
• If the cutting cord is purchased in rolls, cut to 25”
lengths.
• Cord life depends on trimming conditions. Replace
cords when they become broken or frayed.
• The smallest diameter cord combined with the
fastest engine speed provides the best grass trimming
performance. The 175 mil cord is recommended for
thicker growth such as bramble, thistle, and ragweed.
• Ease the ends of the cord into heavy growth and move
slowly through thick growth. If there are woody weeds
in the material you are cutting, the cutting cords may
wrap around the stalks they cannot cut, and pull away
from the cutting head.
• Installing two (2) cords, 180 degrees apart, of equal
length and weight on the line plate, is the best method
for optimal trimming performance.
• When replacing cords, do it one at a time and use the
old cord to mark the position for the new cord that you
are replacing.
• If the cord breaks off ush at the line plate, use needle
nose pliers to pull out the old cord.
• Storing the cord in a plastic bag with a damp sponge
or cloth will help keep it pliable. You can also soak
your cutting cord in a bucket of room temperature
water for a few days before use to make it more
pliable.
• UV light can degrade cord, store out of direct sunlight.
DO NOT USE DIFFERENT WEIGHT CORDS ON THE CUTTING
HEAD AT THE SAME TIME. THIS CAN CAUSE EXCESSIVE
VIBRATION AND MAY DAMAGE THE STRING TRIMMER.
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OPERATION
CUTTING HEAD
Allow the front end of the string trimmer to rest lightly on
the cutting head as you are trimming. The cutting head
should glide on the ground as you maneuver the string
trimmer. To achieve the best and smoothest cut, do not lift
up on the handlebar while operating your string trimmer.
Lifting the handlebar will force weight down on the cutting
head. This uses more energy, slows the cutting, and
produces an unsatisfactory cut. Ideally, the cutting head
should lightly rest on the ground while the wheels balance
most of the weight of the string trimmer.
Replacing the Cutting Head or Line Plate
Tools and Supplies Needed:
• Phillips head screwdriver with at least a 6” shank
• Gloves
Cutting Head Disassembly
1. Align the hole in the anti-wrap canister with the hole
in the internal housing at the location shown (see
Figure 12).
2. Insert a Phillips head screwdriver into the hole in the
anti-wrap canister and the hole in the internal housing.
3. Rotate the cutting head assembly until the screw driver
slides into a hole in the shaft, locking it into place.
4. Looking down at the top of the frame, turn the cutting
head clockwise until it unscrews completely from the
bearing housing.
ROTATE
CLOCKWISE
Figure 12
SCREWDRIVER
CUTTING
HEAD
NOTE: If the cutting head continues to turn, but does
not come off, check to be sure that you locked the
screwdriver into the shaft. If the cutting head will not
turn by hand a 9/16” socket wrench can be used on the
bolt (inside the bottom of the cutting head) to loosen it.
You may need to clean grass or debris out of the recess
rst.
5. Slide the line plate and spacers off the shaft.
14
Page 15
CUTTING HEAD COMPONENTS
!
!
OPERATION
CAUTION
Improper installation can cause damage to the cutting
head bearings. Follow directions carefully to protect the
string trimmer from damage.
Assemble components in the order shown (see gure 13.)
1. Place the spacer and bearing cover (with the lip facing up)
onto the shaft (Figure 13).
2. Align the ats at the center of the plates with the at on the
shaft and slide the line plate onto the shaft. Ensure they
are facing top side up as shown.
3. Place the cutting head bolt so it is sitting in the hex cavity
at the bottom of the cutting head.
4. Looking down at the top of the frame, hold the bolt
head in place with your nger and turn the cutting head
counterclockwise to start the bolt into the shaft.
5. Insert the screwdriver as shown in Figure 12 and tighten
the assembly securely by turning the cutting head
counterclockwise when looking down on the top of the
frame.
NOTE: When nished there should be no gaps between
any of the components.
BEARING
COVER
SPACER
LINE
PLATE
WARNING
Always make sure you remove the screwdriver from the
head assembly when nished. Failure to remove the
screwdriver could cause injury when the head assembly is
engaged.
CUTTING
HEAD
BOLT
Figure 13
15
Page 16
OPERATION
!
OPERATING ENVIRONMENT
WARNING
The cutting head can easily throw debris at great velocity,
which could cause personal injury or property damage. Do
not run the string trimmer over loose gravel or mulch
with the cutting head spinning.
• The string trimmer discharges cut material to the right.
• Always try to cut and trim with the uncut tall grass or
weeds on the left.
• Always check your work area before trimming and
remove any debris that might tangle or damage the string
trimmer.
• If you do run into debris and the cutting head becomes
tangled, turn off the engine and disconnect the spark
plug wire before attempting to untangle the string
trimmer.
• For the neatest appearance, do your trimming rst,
discharging clippings away from borders and shrubs,
then do your mowing.
• Many owners like to mow easy, open areas with their
regular riding or walk behind string trimmer and nish
trimming all the odd and hard-to-reach spots with the
string trimmer.
Heavy Growth Trimming Recommendations
• Take your time in heavy growth.
• Be sure to keep uncut material to your left, maintaining
a clear discharge area to your right.
• If the string trimmer cannot do it all in one pass, overlap
half of the cutting swath.
• If the grass is very thick and heavy, try raising the cutting
head off the ground a few inches by pushing down on
the handlebar. Cut the material at this height, and then
make a second pass with the cutting head close to the
ground.
• Ease the string trimmer into denser growth. If the
material is too tough or woody to cut, the cutting cords
will wrap around it, wear down, or even break off.
• Sometimes the growth is so heavy, you cannot mow it in
rows. Use a forward and back “vacuum cleaner” motion
in these cases.
16
Page 17
OPERATION
!
OPERATING ENVIRONMENT
Wet Environments
You can use the string trimmer in damp and wet conditions,
after a rain, or in the early morning dew without clogging
or stalling. You can mow wet areas such as ditches and
around ponds.
Note: NEVER mow in the rain. Water on the spark plug may
cause the engine to stall.
Dry Environments
When trimming and mowing in very dry conditions, be
extra cautious of cut grass, chaff, weeds, seeds, etc.,
accumulating on the
engine, especially around the recoil-starter housing and
engine cooling ns. Please see the Engine Owner’s Manual
for more
detailed information on cleaning the air intake, air lter,
and cooling system on the engine.
WARNING
Frequently remove debris from the recoil guard on top of
the engine and the cooling ns on the front of the engine to
prevent overheating and engine damage.
Slopes
You can trim and mow on slopes up to 20 degrees.
Continuous use on slopes steeper than 20 degrees may
deprive the engine of adequate lubrication, and damage
components.
Windrows
The string trimmer cutting cords cut tall grass in one pass,
so you can collect clippings and leaves for mulch without
raking. The string trimmer ejects cut material to its right
side, so you can use it like a lawn broom to make cleanup
easy and to create windrows.
Firebreaks
Use your cutting head as a labor saving tool to cut material
when creating rebreaks.
Garden Clean-Up
The string trimmer is perfect for cutting down dead
perennials, annuals, and wildowers, saving you hours
of hand pruning and deadheading. You can also re-cut
downed material a second time to create mulch for garden
beds.
17
Page 18
MAINTENANCE
!
WARNING
BEFORE PERFORMING ANY MAINTENANCE PROCEDURE
STOP THE ENGINE, WAIT FIVE (5) MINUTES TO ALLOW ALL
PARTS TO COOL. Disconnect the spark plug wire, keeping it
away from the spark plug.
Regular maintenance is the way to ensure the best
performance and long life of your string trimmer. Please
refer to this manual and the engine manufacturer’s owner’s
manual for maintenance procedures.
Maintenance Checklist
Maintenance Before Every Every
Procedure Each Use 25 Hours of Use 100 Hours of Use
Check engine oil level X
Clean engine exterior, cooling ns and X
remove debris. Cleaning the engine top
during use is critical for proper air ow.
Check general equipment condition X
including nuts, bolts, welds, etc.
Replace broken or frayed cutting cords X
Check cutting head and line plate X
for excessive wear
Check the belt for stretching The rst time X
Adjust the drive cable if necessary after 2 hours of use
Lubricate throttle cable and X
cutting head control cable with SAE 30 oil
Change the engine oil The rst time X
after 5 hours of use
Replace the engine air lter cartridge X
and foam pre-lter if equipped.
Replace spark plug X
18
Page 19
MAINTENANCE
CHANGING THE ENGINE OIL
Tools and Supplies needed:
• SAE 30 HD Oil (refer to your Engine Owner’s Manual
for quantity required)
• Suitable container for used oil
• Cleaning Rags
• Wooden pallet or workbench
NOTE: Drain the oil when the engine is warm. Warm oil
drains quickly and completely.
1. For convenience, place the string trimmer up on a
wooden pallet or workbench.
2. Remove the oil cap/dipstick and position a suitable oil
receptacle beside the oil ll tube.
3. Make sure to securely tighten the gas ll cap.
4. Using the handle of the string trimmer, tip the string
trimmer to drain the oil out through the oil ller tube into
a suitable receptacle. (see Figure 14).
NOTE: Be sure to use environmentally safe disposal
procedures in the disposing of the used oil.
5. Rell the engine using SAE 30 HD oil to the level
indicated on the dipstick.
ADJUSTING THE BELT TENSION THROUGH THE CUTTING
HEAD CONTROL CABLE
Before adjusting the cutting head belt tension cable, check
that the belt is properly installed. Also make sure the cable
is attached to the bail bar. The belt will stretch a little when
new, then more over time. If the cutting head does not
spin with the safety bar engaged, adjust the cutting head
control cable to put more tension on it. The adjuster is
located on the control cable itself.
1. Locate the cutting head cable along the left handlebar.
There is an in-line adjuster to change the tension on the
cable (see Figure 15).
2. You can take the slack out of the cable by holding the
hex at sections of the in-line adjuster and rotating the
body of the in-line adjuster in the counterclockwise
direction as you look down on the cable. If the cable
is too tight, you can loosen the cable by twisting the
adjuster in the clockwise direction.
3. If the in-line adjuster is adjusted all the way out and
more adjustment is needed then the belt needs to be
replaced.
OIL CAP
DIPSTICK
Figure 14
CUTTING
HEAD
CONTROL
CABLE
Figure 15
19
Page 20
MAINTENANCE
REPLACING THE BELT
Tools needed:
• 10mm Wrench
• 13mm Wrench
1. Tip the string trimmer back just far enough to access
the underside and support the handlebars.
2. Unscrew cutting head cap and remove cutting head
plates from spindle.
3. Remove the four debris guard bolts and at washers
with a 10mm wrench. Remove the cutting head guard
(see Figure 16).
4. Loosen the belt guide locknut using a 10mm wrench
(see Figure 17) and rotate the guide out of the way.
5. Remove the two locknuts from the idler link using
a 13mm wrench so the idler link, idler pulleys and
spacers can be removed from the string trimmer.
6. Remove the belt from around the engine and head
assembly pulleys.
7. Install a new drive belt around the engine and head
assembly pulleys.
8. Install the small spacer and at idler pulley (see
Figure 18). Make sure you place the belt correctly
between the idler pulley, bracket tab, and guide pin.
9. Install the small spacer and v-groove idler pulley.
Position the idler link over the idlers and secure with
the two locknuts using a 13mm wrench (Figure 17).
10. Rotate the belt guide into position and tighten the
locknut with a 10mm wrench.
11. Position the cutting head guard and secure with the
four bolts and at washers using the 10mm wrench.
12. Install the cutting head and tip the cutting head
down on the head assembly.
13. After installing the new belt, be sure to adjust the
tension properly by adjusting the in-line adjuster
all the way in (refer to page 19). Proper tension will
extend the life of the belt.
CUTTING
HEAD
GUARD
BELT
Figure 16
IDLER
LINK
ENGINE
PULLEY
Figure 17
BOLTS AND
WASHERS
CUTTING
CORD
LOCK NUTS
BELT
GUIDE
Note: Before using your string trimmer for the rst
time or after you have installed a new belt, engage the
safety bar 10 times and hold it for 3 seconds each
time. This is required to wear in the belt to ensure the
best grip for trimming.
20
BRACKET
TAB
BELT
GUIDE
PIN
IDLER
PULLEY
Figure 18
Page 21
MAINTENANCE
!
Replacing the Wheels
Tool needed:
• 13mm Wrench
1. Block and stabilize the string trimmer so that the
wheels are off the ground.
2. Loosen and remove the locknut (see Figure 19).
3. Slide the wheel off the axle.
4. Reverse the steps to install the new wheel.
LOCKNUT
Figure 19
OFF SEASON STORAGE
WARNING
Never store lawn string trimmer with fuel in tank indoors
or in poorly ventilated areas where fuel fumes may reach
an open ame, spark, or pilot light as on a furnace, water
heater, clothes dryer, or gas appliance.
Preparing The Engine
For engines stored over 30 days:
• To prevent gum from forming in fuel system or on carburetor
parts, run engine until it stops from lack of fuel or add a
gasoline additive to the gas in the tank. If you use a gas
additive, run the engine for several minutes to circulate the
additive through the carburetor.
• An oil change is not required but if you desire to change the
oil then change while the engine is warm.
• Clean engine of surface debris.
Preparing The Lawn String trimmer
• Clean and lubricate string trimmer thoroughly as described
in the lubrication instructions.
• Do not use a pressure washer or garden hose to clean your
unit.
• Coat string trimmer’s cutting blade with chassis grease to
prevent rusting.
• Refer to Preparing the Engine for correct engine storage
instructions.
• Store string trimmer in a dry, clean area. Do not store next to
corrosive materials, such as fertilizer.
When storing any type of power equipment in a poorly
ventilated or metal storage shed, care should be taken to
rust-proof the equipment. Using a light oil or silicone, coat
the equipment, especially cables and all moving parts of your
lawn string trimmer before storage.
21
Page 22
TROUBLESHOOTING
!
WARNING
BEFORE PERFORMING ANY MAINTENANCE PROCEDURE
STOP THE ENGINE, WAIT FIVE (5) MINUTES TO ALLOW ALL
PARTS TO COOL. Disconnect the spark plug wire, keeping it
away from the spark plug.
PROBLEM SOLUTION
Recoil will not pull out or is difcult to pull. • Check the engine oil level, the engine may be seized.
(Refer to the engine Owner’s Manual) • There may be an oil compression lock in the cylinder. Take
out the spark plug; hold a rag over the spark plug hole and
pull the recoil cord several times to blow out any oil in the
cylinder. Wipe off the spark plug and reinstall it.
• The recoil may be broken or jammed. Try to turn the engine
pulley by hand, with the spark plug wire off. If it turns,
the recoil is broken or jammed. Visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
The engine will not start manually. • Check that the throttle is in the most forward position (or
RUN position when the engine is warm). Check the throttle
cable and make sure that it is attached to the engine and is
moving freely.
• Check for proper attachment of the spark plug wire.
• Check that the engine has the right amount of clean oil. If
the oil is dirty, change it following the procedure on page
17.
• Use only fresh, clean, unleaded gas. If the gas is old,
change it. Use a fuel stabilizer if you keep gas longer than
one month.
• Check the fuel lter (if equipped) to see if it is clear. Place
a can under the fuel lter and remove the fuel line from the
engine side of the lter. If gas ows freely, it is OK.
• Check that the air lter is clean. If it is dirty, change it
following the procedure in the engine Owner’s Manual.
• Make sure that the spark plug is clean. If the spark plug is
dirty or cracked, change it. If it is oily, leave it out, hold a
rag over the spark plug hole and pull the recoil cord several
times to blow out any oil in the cylinder, then wipe off the
spark plug and reinsert it.
• If the engine still will not start, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
22
Page 23
TROUBLESHOOTING
PROBLEM SOLUTION
Engine smokes. • Check the oil level and adjust as needed.
• You may be operating the trimmer on too great an incline.
• Check the air lter and clean or replace if needed.
• You may be using the wrong oil - too light for the
temperature. Refer to your engine Owner’s Manual for
detailed information.
• Clean the engine cooling ns and the carburetor housing if
they are dirty.
• If the engine still smokes, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
Engine lacks power or isn’t running smooth. • Check the throttle travel. The throttle lever should be in the
most forward position (or RUN position when the engine is
warm).
• Check for debris (hay seed, etc.) clogging the air lter intake
and clean out as required.
• The engine’s blower housing, throttle linkage, and cooling
ns should be free of debris. Clean them following the
instructions in the engine Owner’s Manual.
• Check that the air lter is clean. If it is dirty, change it
following the procedure in the engine Owner’s Manual.
• Remove the spark plug wire and dry the connection with a
clean rag.
• The spark plug may be dirty or cracked, change it. If it’s oily,
leave it out, hold a rag over the spark plug hole and pull the
recoil cord several times to blow out any oil in the cylinder,
then wipe off the spark plug and reinsert it.
• You should be using fresh, clean, unleaded gas. If it is old,
change it. Use a fuel stabilizer if you keep gas longer than
one month.
• Check that the engine has the right amount of clean oil. If it
is dirty, change it following the procedure on page 19.
• If your engine still lacks power, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
Cutting head won’t spin or lacks power. • Check for proper alignment of the v-belt. Check it against
Figure 18 in the “Replacing the Belt” section on page 20.
• The belt may be worn or frayed; if so, replace it.
• If the cutting head still will not spin, follow the procedure
for “Adjusting the Belt Tension through the Cutting head
Control Cable” on page 19.
• If none of the above helps, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
23
Page 24
TROUBLESHOOTING
PROBLEM SOLUTION
Cutting head keeps spinning or spins • Check for proper alignment of the v-belt. Check it against
when you release the safety bar. Figure 18 in the “Replacing the Belt” section on page 20.
• If the cutting head keeps spinning when you release the
safety bar, see “Adjusting the Belt Tension through the
Cutting Head Control Cable” on page 19.
• If none of the above helps, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
Cutting cords are breaking. • The cords may be too dry. Store cords in a plastic bag with a
damp sponge or cloth to make them less prone to breaking
or soak them in a bucket of water for a few days.
• You may be trying to do too much too fast. Ease into the
material you are cutting; let the cord tips do the work. Take
small bites of tall or tough vegetation. Cut half a swath at a
time, keeping the cut area to the discharge or right side of
the cutting head. Go over tall material twice, the rst time
with the cutting head tilted up and back; the second time
with the cutting head on the ground.
• Make sure that you are not hitting the cords against a stone
or a chain-link fence. The cords won’t last as long against
obstacles as in the open. Work on controlling the cutting
pattern. With practice, you’ll learn to cut closer to obstacles
without hitting them.
`
Cutting cords are pulling out. • You may be moving too fast into tough, woody growth. In
doing so, the cords may wrap on stalks and pull out. Check
the operating tips in the section above on breaking cords.
• Make sure that you are not trying to cut material too heavy
for the cord. The design of your cutting head is to cut green
material up to about the thickness of a pencil.
• If none of the above helps, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
The cutting head is wearing too quickly. • You may be pushing the cutting head down into the ground.
The string trimmer works best with a light touch, with the
cutting head resting easily on the ground.
• You may be hitting the cutting head against rocks, concrete
driveways or other hard obstacles. Try approaching them
slowly, and from different directions, to avoid unnecessary
wear.
• If none of the above helps, visit our web site at www.
dirtyhandtools.com or call 1-877-487-8275 for assistance.
24
Page 25
3
14
2
15
1
13
HANDLEBAR ASSEMBLY
11
Item # Part # Description Qty.
1 100128 Hex Nut, Nylock, M8 x 1.25, G8.8 1
2 100130 Flat Washer, M8 1
3 100837 Hex Bolt, M8 x 1.25 x 60mm, G8.8 1
4 101156 Lower Handlebar 1
5 101157 Upper Handlebar 1
6 102902 Handlebar Jaw Adjuster, Left 2
7 102903 Handlebar Jaw Adjuster, Right 2
8 101160 Spring .720 OD x .063 2
9 101161 Handlebar Adjuster Handle 2
10 101162 Carriage Bolt, M8 x 1.25 x 80mm 2
11 101165 Bail Bar 1
12 101166 Belt Engagement Cable Assembly 1
13 101164 Throttle Cable Assembly 1
14 101752 Pull Cord Guide 1
15 101494 Hex Nut, Nylock M6 x 1.0, G8.8 1
12
5
4
8
6
9
7
10
25
Page 26
ENGINE ASSEMBLY
9
6 3
30 13
23
1
24
22
21
37
19
18
32
10 8
28
4
11
17
25
26
36
31
14
29 15
2
34
7
33
5
27
12
35
16 20
SEE CUTTING HEAD
ASSEMBLY
PAGE 28
26
Page 27
ENGINE ASSEMBLY
Item # Part # Description Qty.
1 101138 Frame Plate 1
2 101151 Debris Guard 1
3 101148 Belt Guide 1
4 100125 Hex Bolt, M8 x 1.25 x 20mm, G8.8 4
5 101300 Hex Bolt, 5/16-18 x 3”, G5 1
6 100126 Hex Bolt, M8 x 1.25 x 30mm, G8.8 1
7 101140 Engine Belt Pulley 1
8 101146 Idler Stand Off 1
9 101136 Engine, Kohler XT6.5, 49ST 1
10 101145 Spring 1
11 101150 Safety Guard 1
12 101050 Cutting Head Assembly 1
13 101049 Nose Cover 1
14 100128 Hex Nut, Nylock, M8 x 1.25, G8.8 1
15 101494 Hex Nut, Nylock, M6 x 1.0, G8.8 3
16 101491 Hex Bolt, 3/8-16 x 1.5, G5 3
17 101492 Hex Bolt, M6 x 1.0 x 14, G8.8 1 4
18 101493 Hex Bolt, M8 x 1.25 x 20, G8.8 4
19 101536 Hex Bolt, M6 x 1.0 x 20, G8.8 1
20 100611 Lock Washer, 3/8 4
21 100127 Lock Washer, M8 9
22 100202 Lock Washer, M6 4
23 100579 Hex Nut, M8 x 1.25 9
24 100198 Hex Nut, M6 x 1.0, G8.8 4
25 100077 Flat Washer, 1/2” 2
26 100130 Flat Washer, M8 2
27 107456 V-Belt, 3L X 44” 1
28 101137 Tension Pulley Bracket 1
29 101227 Engine Belt Guide 1
30 101225 DHT Decal 1
31 101052 Danger Decal 1
32 101054 Safety Decal 1
33 101144 Idler Pulley Flat 1
34 101143 Idler Pulley V 1
35 101810 Pulley Bottom Bracket 1
36 101147 Spacer, Idler Pulley 2
37 108747 Debris Guard Bar 1
27
Page 28
AXLE/WHEEL ASSEMBLY
Item # Part # Description Qty.
1 101152 Axle 1
2 101094 Wheel Assembly 2
3 100128 Hex Nut, Nylock, M8 x 1.25, G8.8 2
CUTTING HEAD ASSEMBLY
1
2
3
12
14
10
15
16
2
11
1
17
9
3
7
8
5
6
Item # Part # Description Qty.
1 101149 Hexagon Spindle 1
2 101041 Spindle Rod 1
3 101043 Bearing Cover 1
4 101042 End Cap 1
5 101037 Blade Slot 1
6 101038 Spacer 4
7 101036 Blade 2
8 101044 String 2
9 101039 Blade Pin 2
10 101045 Bearing 2
11 101040 Spindle Spacer 1
12 100085 Hex Bolt, M6 x 1.0 x 20mm, G8.8 1
13 100126 Hex Bolt, M8 x 1.25 x 30mm, G8.8 1
14 100202 Lock Washer, M6 1
15 100445 Fender Washer, M6 1
16 101141 Belt Pulley 1
17 101827 Retaining Ring, Internal, 40mm 1
13
4
28
Page 29
NOTES
29
Page 30
NOTES
30
Page 31
NOTES
31
Page 32
CRAFTSMAN®
is a registered trademark of Stanley Black & Decker, Inc., used under license.
© 2018 CRAFTSMAN
All rights reserved.
Product Manufactured by:
Frictionless World
1100 W 120th Ave. Suite 600
Westminster, Colorado 80234
U.S. & Canada Only
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