Craftsman 316791860 (2009) Owner’s Manual
Operator's Manual
2-Cycle
WEEDWACKER® GAS TRIMMER
Model No. 316.791860
U_U_VASLE STA#T/N0 EA SE _
* SAFETY
* ASSEMBLY
* OPERATION
* MAINTENANCE
* PARTS LIST
* ESPANOL, R 11
CAUTION: Before using this
product, read this manual and
follow all safety rules and
operating instructions.
Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.sears.corn/craftsrnan
769-04884 P01 5/09
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.
The purpose of safety symbols is to attract your attention to possible I
dangers. The safety symbols, and their explanations, deserve your I
careful attention and understanding. The safety warnings do not by I
themselves eliminate any danger. The instructions or warnings they I
give are not substitutes for proper accident prevention measures.
SYMBOL MEANING
TABLE OF CONTENTS
Safety Rules .......................................... 2
Warranty ............................................. 4
Know Your Unit ........................................ 4
Assembly instructions ................................... 4
Oil and Fuel information ................................. 5
Starting/Stopping instructions ............................ 5
Operating instructions ................................... 6
Maintenance and Repair instructions ....................... 6
Cleaning and Storage ................................... 8
Troubleshooting Chart ................................... 9
Specifications ........................................ 10
Parts List ............................................ 22
Service Numbers .............................. Back Cover
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 Muffler Assembly
All information, illustrations, and specifications inthis 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.
= IMPORTANT SAFETY INSTRUCTIONS =
READ ALL INSTRUCTIONS BEFORE OPERATING
SAFETY ALERT: indicates danger, warning or caution.
Attention is required in order to avoid serious personal
injury. May be used in conjunction with other symbols or
pictographs.
NOTE: Advises you of information or instructions vital to the
_ ANGER: Failure to obey a safety warning will result in
Read the Operator's Manual and follow all warnings and safety
instructions. Failure to do so can result in serious injuryto the operator
and/or bystanders.
FOR QUESTIONS, CALL 1-800-659-5917
FUEL SAFETY WARNINGS
operation or maintenance of the equipment.
serious injury to yourself or to others. Always follow the
safety precautions to reduce the risk of fire, electric shock
and personal injury.
WARNING: Failureto obey a safety warning can result ininjury to yourself and others. Always follow the safety precautions
to reduce the riskof fire,electric shock and personal injury.
CAUTION: Failure to obey a safety warning may result in
property damage or personal injury to yourself or to others.
Always follow the safety precautions to reduce the risk of fire
electric shock and personal injury.
rules. Please read these instructions before operating the unit in
_ ARNING: When using the unit, you must follow the safety
• Read the instructions carefully. Be familiar with the controls and
order to ensure the safety of the operator and any bystanders.
Please keep these instructions for lateruse.
proper use of the unit.
Do not operate this unit when tired, ill or under the influence of
alcohol, drugs or medication.
Children must not operate the unit. Teens must be accompanied
and guided by an adult.
inspect the unit before use. Replace damaged parts. Check for
fuel leaks. Make sure all fasteners are in place and secure.
Replace trimmer attachment parts that are cracked, chipped or
damaged in any way.
Use only Hassle FreeTM XTRA QUIET Spiral Line. Never use
metal-reinforced line, wire, chain or rope. These can break off
and become dangerous projectiles.
Be aware of risk of injury to the head, hands and feet.
Clear the area to be cut before each use. Remove rocks, broken
glass, nails, wire, string and other objects which may be thrown
or become entangled in the trimmer attachment. Clear the area of
children, bystanders and pets; keep them outside a 50-foot
(15 m) radius, at a minimum. Even then, they are still at risk from
thrown objects. Encourage bystanders to wear eye protection, if
you are approached, stop the unit immediately.
Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments or repairs
before using the unit.
[_ ARNING: Gasoline is highly flammable and its vaporscan explode if ignited. Take the following precautions:
Store fuel only in containers specifically designed and approved
for the storage of such materials.
Always stop the engine and allow it to cool before filling the fuel
tank. Never remove the fuel tank cap 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. Remove the fuel cap slowly, and
only after the engine stops. Do not smoke while fueling or mixing
fuel. Wipe up any spilled fuel from the unit immediately.
Avoid creating asource of ignition for spilled fuel. Do not start the
engine until fuel vapors dissipate.
Move the unit at least 30 feet (9.1 m)from the fueling source and site
before starting the engine. Do not smoke. Keep sparks and open
flames away from the area while adding fuel or operating the unit.
WHILE OPERATING
= Never start or run the unit inside a closed room or building.
Breathing exhaust fumes can 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 operating
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.
• Thetrimmerattachmentshieldmustalwaysbeinplacewhile • Turntheenginetooffanddisconnectthesparkplugfor
operatingtheunit.Donotoperateunitwithoutbothtrimminglines
extended,andtheproperlineinstalled.Donotextendthe
trimminglinebeyondthelengthoftheshield.
Thisunithasaclutch.Thetrimmerattachmentremainsstationary
whentheengineisidling.Ifitdoesnot,taketheunittoaSearsor
otherqualifiedservicedealerforanadjustment.
AdjusttheD-handletoyoursizeinordertoprovidethebestgrip.
Besurethetrimmerattachmentisnotincontactwithanything
beforestartingtheunit.
Usetheunitonlyindaylightorgoodartificiallight.
Avoidaccidentalstarting.Beinthestartingpositionwhenever
pullingthestarterrope.Theoperatorandunitmustbeinastable
positionwhilestarting.RefertoStarting/StoppingInstructions.
Usetherighttool.Onlyusethistoolforitsintendedpurpose.
Alwaysholdtheunitwithbothhandswhenoperating.Keepafirm
griponbothhandlesorgrips.
Keephands,face,andfeetawayfromallmovingparts.Donot
touchortrytostopthetrimmerattachmentwhenitrotates.
Donottouchtheengine,gearhousingormuffler.Thesepartsget
extremelyhotfromoperation,evenaftertheunitisturnedoff.
Donotoperatetheenginefasterthanthespeedneededtocut,trim
oredge.Donotruntheengineathighspeedwhennotcutting.
Alwaysstoptheenginewhencuttingisdelayedorwhenwalking
fromonecuttinglocationtoanother.
Ifyoustrikeorbecomeentangledwithaforeignobject,stoptheengine
maintenanceorrepair.
Useonlyreplacementpartsoraccessoriesrecommendedforthis
toolthataredistributedbySearsoraCraftsmanoutlet.Useof
anyreplacementpartsoraccessoriespurchasedelsewheremay
behazardous,andwillalsovoidyourwarranty.
Keepunitcleanofvegetationandothermaterials.Theymay
becomelodgedbetweenthetrimmerattachmentandshield.
Toreducefirehazard,replaceafaultymufflerandsparkarrestor.
Keeptheengineandmufflerfreefromgrass,leaves,excessive
greaseorcarbonbuildup.
OTHERSAFETYWARNINGS
Neverstoretheunitwithfuelinthetank,insideabuildingwhere
fumesmayreachanopenflame(pilotlights,etc.)orsparks
(switches,electricalmotors,etc.).
Allowtheenginetocoolbeforestoringortransporting.Besureto
securetheunitwhiletransporting.
Storetheunitinadryplace,securedorataheighttoprevent
unauthorizeduseordamage.Keepoutofthereachofchildren.
Neverdouseorsquirttheunitwithwateroranyotherliquid.Keep
handlesdry,cleanandfreefromdebris.Cleanaftereachuse,see
CleaningandStorageinstructions.
Keeptheseinstructions.Refertothemoftenandusethemto
instructotherusers.Ifyouloanthisunittoothers,alsoloanthem
theseinstructions.
SAVETHESE INSTRUCTIONS
immediatelyandcheckfordamage.Donotoperatebeforerepairing
damage.Donotoperatetheunitwithlooseordamagedparts.
• SAFETY & 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
• THROWN OBJECTS AND ROTATING CUTTER CAN
_b ' SAFETY ALERT SYMBOL
_I ' WEAR EYE AND HEAR'NG PROTECT'ON
Indicates danger, warning or cautionl May be used in
conjunction with other symbols or pictographs:
Read the operator,s manual(s) and follow ail warnings
,WARNING : READOPERATOR'S MANUAL
and safety instructions, Failure to do SOcan result in
serious injury to the operator and/or bystandersl
WARNING: _rown Objectsand 10udnoiseCancause
severe eyeinjuryand hearingloss:Wear eye protection
m_ting ANSI Z87:! ,! 989 standards and earprotection when
operating this unit. Use a fullface shieldwhen needed.
,UNLADEDFUEL
_| Always use clean, fresh unleaded fuel
A
CAUSE SEVERE INJURY
WARNING: Small objects can be propelled at high
speed, causing injury.Keep away from the rotating rotor.
• KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders, especially children
and pets, at least 50 feet (15 m.)from the operating area.
Do not touch a hot muffler or cylinder. You may get
burned. These parts get extremely hot from operation.
, WARNING- HOTSURFACE
When turned off they remain hot for a short time.
• OIL
Refer to operator's manual for the proper type of oil.
U
Push primer bulb, fully and slowly, 10 times.
• SHARP BLADE
|, ON/OFFSTOPCONTROL
ONSTART RUN
[_ _ PRIMER BULB
.._ WARNING: Sharp blade on trimmer attachment shield.
-_ . To prevent serious injury, do nottouch the linecutting blade.
3
CRAFTSMAN FU LL WAR RANTY
If this Craftsman product fails due to a defect in material or workmanship within two years from the date of purchase, return it to any Sears
store, Parts & Repair Service Center, or other Craftsman outlet in the United States for free repair (or replacement if repair proves impossible).
This warranty applies for only 90 days from the purchase date if this product is ever used for commercial or rental purposes.
This warranty covers ONLY defects in material and workmanship. Sears will NOT pay for:
• Expendable items that can wear out from normal use within the warranty period, such as cutting line, filters or spark plugs.
• Repairs necessary because of accident or failure to operate or maintain the product according to all supplied instructions.
• Preventive maintenance, or repairs necessary due to improper fuel mixture, contaminated or stale fuel.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Spark Plug
On/Off Stop Control
Fuel Cap Starter
Rope Grip
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds.
Other optional accessories may be used with this unit.
Shaft Grip
Throttle Control
D-Handle
Air Filter/ Shaft Housing
Muffler Cover
Convertible TM
Primer Bulb Coupler
Muffler Attachment
Edging
Decorative trimming around trees, fences, etc.
Line g
Blade
Trimmer
INSTALL AND ADJUST THE D-HANDLE
1. Push the D-handle down Shaft Grip
D=Handle
onto the shaft housing so
that the handle slants
towards the shaft grip Tighten
(Fig. 1). The squared bolt
hole in the handle is to Minimum 6 in.
the right. (15.24 cm) Wing
2. Insert the shoulder bolt Nut
into the squared hole in
the handle and push Bolt Washer
through. On the left side Fig. 1
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.
Trimmer Shield
Hassle Free ® Cutting d
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. 8), position the D-handle to the location that provides you
the best grip.
5. Tighten the wing nut until the D-handle is secure.
INSTALLING THE TRIMMER ATTACHMENT
Prior to use, make sure trimmer attachment is installed correctly.
Please refer to Operating the Convertible TM Coupler System for
proper installation.
NOTE: Remove red cap or hanger from lower shaft housing prior to
assembling to Convertible TM coupler
OILANDFUELMIXINGINSTRUCTIONS
Oldand/orimproperlymixedfuelarethemainreasonsfortheunitnot
runningproperly.Besuretousefresh,cleanunleadedfuel.Followthe
instructionscarefullyfortheproperfuel/oilmixture.
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 usethe 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 afuel 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.
reliability, pay strict attention to the oil and fuel mixing
_ AUTION: For proper engine operation and maximum
Thoroughly mix the proper ratio of 2-cycle engine oil with 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
NOTE: Dispose of the old
_lb ARNING: Remove fuel cap slowly to avoid injury from
instructions on the 2-cycle oil container. Using improperly
mixed fuel can severely damage the engine.
A
unleaded gasoline
mixed with one 3.2 oz.
(95 ml) bottle of 2-cycle
oil makes a 40:1 fuel/oil
ratio.
fuel/oil mix in
accordance to
Federal, State and
Local regulations.
vapors may explode. Always stop the engine and allow it
to cool before filling the fuel tank. Do not smoke while
filling the tank. Keep sparks and open flames at a distance
WARNING: Gasoline is extremely flammable, ignited
from the area.
fuel spray. Never operate the unit without the fuel cap
securely in place.
UNLEADED GAS
1GALLON US
(3.8LITERS}
1LITER
MIXING RATIO - 40:1
2 CYCLE OIL
3.2 FL.OZ.
(95 ml}
25 ml
,_ WARNING: Operate this unit only in a well-ventilatedoutdoor 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 starter rope (Fig. 4).
To avoid serious injury, the operator and unit must be
in a stable position while starting.
STARTING INSTRUCTIONS
1. Mix gas with oil. See Oil Stop/Off (O}---_._/z_
and Fuel Mixing /_-Y/OL_ /
2. Fill the fuel tank with the
fuel/oil mixture.
NOTE: There is no need to
Instructions.
turn the unit on. The
On/Off Control is in
the ON (I) position at _ ////[i'_-Throttle Control
all times (Fig. 2). _J
3. Fullypress and release the
primer bulb 10 times, slowly.
Some amount of fuel should
be visible in the primer bulb
and fuel lines(Fig.3). Ifyou
can't see fuel inthe bulb,
pressand release the bulb
as many times as it takes
untilyou can see fuel init.
4. Crouch in the starting
position (Fig. 4). Do not
squeeze thethrottle, pull the
starter rope with a controlled
motion untilthe unit starts.
Wait and allow the unit to idle
for 60 seconds.
8,
Squeeze and hold the
throttle contol for an
additional 30 to 60 seconds
to allow the unit to warm up.
NOTE:
IF... The engine does not start, go back to step 3.
NOTE: If the unit is hot and fails to start within 3 pulls of the starter
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control. Allow the engine to
2. Press and hold On/Off Stop Control in the OFF (O) position until
The unit usesthe
INCREDI=PULLTM
starting system, which
significantly reduces the
effort requiredto start
the engine.You must pull the starter rope out far enough to hear
the engine attempt to start. There is no need to pullthe rope
briskly-- there is no harsh resistance when pulling. Be awarethat
this starting method is vastly different from (and much easierthan)
what you may be used to.
rope, squeeze the throttle control and pull the starter rope
until the unit starts.
cool down by idling.
engine comes to a complete stop (Fig. 2).
Fig. 2
Primer Bulb
/
Fig. 3
Starting
Position
Fig. 4
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.
5
OPERATING THE CONVERTIBLE TM COUPLER SYSTEM
WARNING: Before you begin using any attachment, read I
and understand the manual that came with the attachment.
CAUTION: These attachments are to be snapped into I
the primary hole only. Using the wrong hole could lead to
personal injury or damage to the unit.
The Convertible TM coupler system enables the use of these optional
attachments.
• Edger
Cultivator
Turbo Blower
Brushcutter
Pole Saw
Blade Pruner
Hedge Trimmer
REMOVING THE TRIMMER ATTACHMENT OROTHER ATTACHMENT
_ WARNING: To avoid serious personal injury and 1
1. Turn the knob
2. Press and hold the
3. While firmly holding the
iNSTALLiNG THE TRIMMER ATTACHMENT OR OTHER ATTACHMENT
damage to the unit, shut the unit off before removing or
installing attachment.
Convertible TM Release Button
counterclockwise to
loosen (Fig. 7).
release button (Fig. 5).
upper shaft housing, pull
the trimmer attachment or
other attachment straight
out of the Convertible TM
coupler (Fig. 6).
Fig. 5
Guide Recess
HOLDING THE TRIMMER
_L_ WARNING: Always wear eye, hearing, foot and body
IFollow allsafety information contained within.
Before operating the unit, stand in the operating position (Fig. 8).
Check for the following:
1
TiPS FOR BEST TRIMMING RESULTS
• Keep the trimmer attachment parallel '_
DECORATIVE TRIMMING
Decorative trimming is accomplished by
removing all vegetation around trees,
posts, fences and more. Rotate the
whole unit so that the trimmer
attachment is at a 30° angle to the ground (Fig. 9).
protection to reduce the risk of injury when operating this unit.
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 slightly bent,
the left hand holding the D-handle
The unit is at waist level
The trimmer attachment is parallel to
the ground and easily contacts the
grass without the need to bend over
to the ground.
Cut from left to right whenever possible. Fig. 8
Trimmer to the right improves the unit's
trimmer efficiency. Clippings are thrown away from the operator.
Trim only when grass and weeds are dry.
The life of your trimmer line is dependent upon:
Following the trimming tips
What vegetation is being cut
Where vegetation is being cut
_ CAUTION: Before operating this unit, be sure that the
NOTE: To make installing or removing the attachment easier, place
1. Turn knob
2. While firmly holding the
NOTE: Aligning the release
3. Turn the knob clockwise
For decorative edging with the
line head trimmer attachment
or other attachment, lock the
release button of the attachment into the 90° hole (Fig. 7).
release button is fully snapped into the primary hole (Fig. 6),
and that the knob (Fig. 7) is securely tightened.
the unit on the ground
or on a work bench. Primary Hole
counterclockwise to
loosen (Fig. 7).
trimmer attachment or
other attachment, push it
straight into the
Convertible TM coupler
until the release button
snaps firmly into the
primary hole (Fig. 6).
button with the guide
recess will help
installation (Fig. 5).
to tighten (Fig. 7).
Housing Housing
Fig. 6
90° EdgingHole
{Trimm_ ..... Knob
Fig. 7
MAINTENANCE SCHEDULE
1
maintenance or repairs with unit running. Always service
and repair a cool unit. Disconnect the spark plug wire to
WARNING: To prevent serious injury, never perform
ensure that the unit cannot start.
Perform these required maintenance procedures at the frequency
stated in the table. These procedures should also be a part of any
seasonal tune-up.
NOTE: Some maintenance procedures may requirespecial tools or
NOTE: Maintenance, replacement, or repair of the emission
In order to assure peak performance of your 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 is in need of this
inspection, refer service to a Sears or other qualified service dealer.
Call 1=800=4-MY=HOME ®for more information. DO NOT attempt to
perform this process yourself as engine damage may result from
contaminants involved in the cleaning process for the port.
skills. If you areunsure about these procedures take your unit to
Sears or other qualified service dealer. Call 1=800=4=MY=HOME®
for more information.
control devices and system may be performed by a Sears
or other qualified service dealer. Call 1=800=4=MY=HOME ®
for more information.
FREQUENCY MAINTENANCEREQUIRED SEE
Before starting Fill fuel tank with fresh fuel p. 5
engine
Every 10 hours Clean and re-oil air filter p. 7
Every 25 hours Check and clean spark arrestor p. 8
Check spark plug condition and gap p. 8
Every 50 hours Inspect exhaust port and spark p. 8
arrestor screen for clogging or
obstruction
LINE REPLACEMENT
Always use Craftsman Hassle-
FreeTM XTRA QUIET Spiral
Line. Choose the line size
best suited for the job at
hand. Red colored line is
designed for cutting grass and
small weeds. Black colored
line is designed for cutting
larger weeds and light brush.
NOTE: Before inserting new
Cuttinc Head
Fig. 10
line into the holes in
the cutting head,
identify the proper
holes. Follow
_ P°siTtin°nenlng
directions as shown
on the line glide plate.
Do Not attempt to
remove the cutting
head from the unit
when replacing line.
Fig. 11
1. Remove the old line and
line glide plate from the
cutting head.
2. Clean entire surface of
cutting head. Note
positions "A" and "B" on
the cutting head.
3. Reinstall line glide plate
(Fig. 10). Align arrow with:
Fig. 12
"A" when using medium (red) or large (black) line, or
"B" when using lines with diameters smaller than medium (red) line
NOTE: Line glide plate must be reinstalled in cutting head before
inserting new line.
4. insert both ends of your line through the proper holes in the
side of the cutting head (Fig. 11).
5. Pull the line and make sure the line is against the hub and is
fully extended through the positioning tunnels (Fig. 12).
6. Correctly installed line will be the same length on both sides.
NOTE: Make sure that when installing new line, that the line is as
close to even as possible. Any variation in lengths may
cause the unit to vibrate excessively. If this happens, stop
the unit and make sure the line is even.
NOTE: Do not rest the Hassle-Free TM Cutting Head on the ground
while the unit is running.
Some line breakage will occur from:
• Entanglement with foreign matter
Normal line fatigue
Attempting to cut thick, stalky weeds
Forcing the line into objects such as walls or fence posts
NOTE: During normal use the trimming line may become worn
unevenly which may cause excessive vibrations in the unit.
If this becomes uncomfortable or uncontrollable, stop the
unit and replace the line. Referto the Line Replacement
instructions above.
Arrow
Glide Plate
AIR FILTER MAINTENANCE
_L_ WARNING: Toavoid serious personal injury, always turn
your unit off and allow it to cool before you clean or service it.
The condition of the airfilteris important to theoperation of theunit. A dirty air
filter will restrictair 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 Screws ,Screws
adjusting the idlespeed screw.
Referto Air FilterMaintenance.
Removing the Air
Filter/Muffler Cover
1.
Remove the four (4)screws
securing the air filter/
Fig. 13
muffler cover (Fig. 13). Use
a flat blade or T20 Torx bit
screwdriver.
2. Pull the cover from the
engine. Do not force.
Cleaning the Air Filter
Failure to maintain your air
filter properly can result in
poor performance or can
cause permanent damage to
inside Muffler Cover
Fig. 14
your engine.
1. Remove air filter/muffler
cover. Refer to Removing
the Air Filter/Muffler
Cover above.
2. Turn cover over and look
inside to locate the air filter.
Remove the air filter from
inside the air filter/muffler
cover (Fig. 14).
Fig. 15
3. Wash the filter in detergent
and water (Fig. 15). Rinse
the filter thoroughly.
Squeeze out excess water.
Allow itto dry completely.
4. Apply enough clean SAE
30 oil to lightly coat the
filter (Fig. 16).
5. Squeeze the filter to
Fig. 16
spread and remove
excess oil (Fig. 17).
6. Replace the air filter
inside the air filter/muffler
cover (Fig. 14).
NOTE: Operating the unit
without the air filter
and air filter/muffler
cover assembly will
VOID the warranty.
Fig. 17
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. 13) and tighten. Do not over tighten.
7
SPARKARRESTOR MAINTENANCE
NOTE: Pay close attention when disassembling the muffler so you
1. Remove air filter/muffler cover. Refer to Removing the Air
2.
3.
4.
5.
6. Place the spark arrestor hood on top of the spark arrestor plate
7. Replace the screw you removed in Step 2 and tighten securely.
8. Reinstall the air filter/muffler cover (Fig. 13).
L_J WARNING: If the spark arrestor hood and spark arrestor
CARBURETOR ADJUSTMENT
NOTE: Careless adjustments can seriously damage your unit. Contact
REPLACING THE SPARK PLUG
Use a Champion RDJ7Y spark plug or equivalent. 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 boot firmly
2. Clean around the spark plug. Remove the spark plug from the
can put it back together correctly. Failure to do so will
damage the unit and may cause serious personal injury.
Filter/Muffler Cover.
Locate the muffler, but do not remove it. Find the screw on the
bottom of the muffler (Fig. 18). This screw holds the Spark
Arrestor Hood Assembly and the spark arrestor screen to the
bottom of the muffler.
Remove this screw using
either a Torx T20 or flat
blade screwdriver.
Using a small flat blade
screwdriver, carefully pry
up the spark arrestor
screen from the recessed
hole, taking care to notice
that the "raised" part of
the spark arrestor screen
is inside the recessed hole. Remove the spark arrestor screen
from the muffler.
Clean the spark arrestor screen with a wire brush. Replace it if it
is damaged, or if you are unable to clean it thoroughly.
Reinstall the spark arrestor screen by putting the "raised"
portion of the screen inside the recessed hole of the muffler.
Make sure that the spark arrestor screen fits flat against the
muffler.
with the "raised" side up and the opening facing AWAY from the
engine (Fig. 18). Verify that the exhaust will be directed AWAY
from the engine.
screen are not tightened securely, they could fall off causing
damage to the unit and possible serious personal injury.
a Sears or other qualified service dealer to make carburetor
adjustments. Call 1-800-4-MY-HOME">for more information.
and pull it from the spark plug.
cylinder head by turning a 5/8-inch socket counterclockwise.
Spark ArrestorHood Engine
is,o
Tabs Screen Muffler
Fig. 18
TRANSPORTING
Allow the engine to cool before transporting.
Drain fuel from unit.
Tighten fuel cap before transporting.
Secure the unit while transporting.
CLEANING
WARNING: Toavoid serious personal injury,always turn your I
tr miner off and a ow t to coo beforeyou c ean or manta n t.
Use asmall 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.
STO RAG E
Neverstore afueled 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
Ifyou plan on storing the unit for an extended time, use the
following storage procedure:
1. Carefully drain the fuel tank by running the unit dry or remove
fuel cap and tip the motor housing over and drain oil/gas fuel
into a container with the same 2-cycle fuel mixture. Do not use
fuel that has been stored for more than 60 days.
2. Start the engine and allow it to run until it stalls. This ensures
that all fuel has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 1 oz.
(30 ml) of any high quality motor oil or 2-cycle oil into the
cylinder. Pull the starter rope slowly to distribute the oil.
Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil from the
cylinder before attempting to start the trimmer after storage.
4. Thoroughly clean the unit and inspect it for any loose or
J
damaged parts. Repair or replace damaged parts and tighten
loose screws, nuts or bolts. The unit is ready for storage.
_ WARN,NG: Do not sand blast, scrape or clean spark plug ]
3. Replace a cracked, fouled
4. Install a correctly-gapped
5. Reattach the plug boot.
electrodes. Grit in the engine could damage the cylinder.
or dirty spark plug. Set
the air gap at 0.025 in.
(0.635 ram} using a feeler
gauge (Fig. 20).
spark plug in the cylinder 0.025 in.
head. Tighten by turning the (0.635ram)
5/8-inch socket clockwise |
until snug. If using a torque
wrench, torque to: Fig.20
110-120 in.olb. (12.3-13.5 Nora). Do not over-tighten.
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