Owner's Manual
5.5 HORSEPOWER
22 INCH CUT
WHEELED
WEEDTRIMMER
Model No.
917.773423
• Safety
• Assembly
• Operation
• Maintenance
• Espa_ol
• Repair Parts
_CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Visit our Craftsman website: www.sears.condcraftsman
Warranty ................................................. 2
Safety Rules ........................................ 2-4
Assembly ................................................ 5
Operation ............................................. 6-8
Maintenance Schedule .......................... 9
Maintenance ...................................... 9-12
Product Specifications............................ 9
Service and Adjustments................. 13-14
Storage ................................................. 15
Troubleshooting ................................... 16
Repair Parts ..................................... 34-41
Parts Ordedng ........................ Back Cover
LIMITED TWO YEAR WARRANTY ON CRAFTSMAN WEEDTRIMMER
For two years from date of purchase, when this Craftsman Weedtrimmer is maintained,
lubricated, and tuned up according to the operating and maintenance instructionsin
the owner's manual, Sears will repair free of charge any defect in matedal or workman-
ship.
If this Craftsman Weedtdmmer is used for commercial or rental purposes, this warranty
applies for only 90 days from the date of purchase.
This Warranty does not cover:
• Expendable items which become worn dudng normal use, such as rotating lines,
belts, air cleaners and spark plug.
• Repairs necessary because of operator abuse or negligence, including bent
crankshafts and the failure to maintain the equipment according to the instructions
contained in the owner's manual.
Warranty service is available by returning the Craftsman Weedtdmmer to the nearest
Sears Service Center in the United States. This warranty applies only while this product
is in use in the United States.
This Warranty gives you specific legal dghts, and you may also have other rights which
vary from state to state.
Sears, Roebuck and Co., Dept. 817 WA, Hoffman Estates, IL 60179
WARNING: This tdmmer 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 arrester
meeting applicable local or state laws (if any). If a spark arrester is used, it should be
maintained in effective working order by the operator.
In the state of California the above is required by law (SecHon 4442 of the California
Public Resources Code). Other states may have similar laws. Federal laws apply on
federal lands. A spark arrester for the muffler is available through your nearest Sears
service center (See REPAIR PARTS section of this manual).
Theoperationofanytrimmercanresultinforeignobjectsthrowninto
theeyes,whichcan result in severe eye damage. Always wear safety
glasses or eye shields while operating your tdmmer or performingany
adjustments or repairs. We recommend a wide vision safety mask
over spectacles or standard safety glasses.
I. GENERAL OPERATION
• Read, understand, and follow all
instructionson the machine and in the
manual before starting. Be thoroughly
familiar with the controls and the proper
use of the machine before starling.
• Do not put hands or feet near or under
rotatingparts.
• Keep all parts of your body away from
muffler and spinning line. A hot muffler
can cause sedous bums.
• Only allow responsible individuals, who
are familiar with the instructions,to
operate the machine.
• Stay away from breakable objects, such
as house windows, auto glass, green-
houses, etc.
• Clear the area of objects such as rocks,
toys, wire, bones, sticks,etc., which
could be picked up and thrown by the
spinning lines.
• Be sure the area is clear of other
people before tdmming, particulady
small children and pets. Stop machine
if anyone enters the area.
• Wear appropriate clothingsuch as a
long-sleeved shirt or jacket. Also wear
long trousers or slacks. Do not wear
sheds.
• Do not wear loose clothing which could
get caught in this equipment.
• Do not operate the machine when
barefoot or wearing open sandals.
Always wear work gloves and sturdy
footwear. Leather work shoes or short
bootswork well for most people. These
will protect the operator's ankles and
shinsfrom small sticks, splinters, and
other debds, and improve traction.
• Do not pull machine backwards unless
absolutely necessary. Always look
down and behind before and while
moving backwards.
• Do not operate the machine without
proper guards, plates or other safety
protective devices in place.
• See manufacturer's instructionsfor
proper operation and installation of
accessories. Only use accessories
approved by the manufacturer.
• Never use blades, wire, or flailing
devices. This unit is designed for line
trimmer use only. Use of other accesso-
ries or attachments will increase the dsk
of injury.
• Stop the rotating trimmer head when
crossing gravel ddves, walks, or roads.
Wait for the cuttinglines to stop rotating.
• Stop the engine (motor) whenever you
leave the equipment and allow it to
cool, before cleaning, repaidng or
inspecting the unit. Be sure the tdmmer
head and all moving parts have
stopped.
• Operate only in daylight or good
artificial light.
• Do not operate the machine while
under the influence of alcohol or drugs.
• Never operate machine in wet grass.
Always be sure of your footing: keep a
firm hold on the handle and walk; never
run.
• If the equipment shouldstart to vibrate
abnormally, stop the engine (motor)
and check immediately for the cause.
Vibration is generally a waming of
trouble.
• Always wear safety goggles or safety
glasses with side shields when operat-
ing machine.
3
II. SLOPEOPERATION
Slopesareamajorfactor related to slip
and fall accidents which can result in
severe injury, All slopes require extra
caution. If you feel uneasy on a slope, do
not tdm it.
DO:
• Tdm across the face of slopes: never up
and down. Exercise extreme caution
when changing direction on slopes.
• Remove obstacles such as rocks, tree
limbs,etc.
• Watch for holes, ruts, or bumps. Tall
grass can hide obstacles.
DO NOT:
• Do not tdm near drep-offs, ditches or
embankments. The operator could lose
footing or balance.
• Do not tdm excessively steep slopes.
• Do not trim on wet grass. Reduced
footing could cause slipping.
II1. CHILDREN
Tragic accidents can occur if the operator
is not alert to the presence of children.
Children are often attracted to the machine
and the tdmming activity. Never assume
that children will remain where you last
saw them.
• Keep children out of the trimming area
and under the watchful care of another
responsible adult.
• Be alert and turn machine off if children
enter the area.
• Before and while moving backwards,
look behind and down for small
children.
• Never allow children to operate the
machine.
• Use extra care when approaching blind
comers, shrubs,trees, or other objects
that may obscure vision.
IV. SERVICE
• Use extra care in handling gasoline
and other fuels. They are flammable
and vapors are explosive.
- Use only an approved container.
- Never remove gas cap or add fuel
with the engine running. Allow
engine to cool before refueling. Do
not smoke,
- Never refuel the machine indoors.
- Never store the machine or fuel
container inside where there isan
open flame, such as a water heater.
- Move away from fueling site before
starting engine.
• Never run a machine inside a closed
area.
• Never make adjustments or repairs
with the engine (motor) running.
Disconnect the spark plug wire, and
keep the wire away from the plugto
prevent accidental starting.
• Keep nuts and bolts, especially trimmer
head and engine bolts, tight and keep
equipment in good condition.
• Never tamper with safety devices.
Check their proper operation regularly.
• Keep machine free of grass, leaves, or
other debds buildup. Clean oil or fuel
spillage. Allow machine to cool before
cleaning or storing.
• Stop and inspect the equipment if you
stdke an object. Repair, if necessary,
before restarting.
• Do not change the engine governor
setting or overspeed the engine.
• Clean and replace safety and instruc-
tion decals as necessary.
•,Look for this symbol to point out
important safety precautions. It means
CAUTION!!! BECOME ALERT!!! YOUR
SAFETY IS INVOLVED.
A WARNING: In order to prevent
accidental starting when setting up,
transporting, adjusting or making repairs,
always disconnect spark plugwire and
place wire where it cannot contact spark
plug.
A CAUTION: Muffierand other engine
parts become extremely hot dudng
operation and remain hot after engine
has stopped. To avoidsevere burns on
contact, stay away from these areas.
ReadIhaseles_a_-tJonsand_ manualin its
entiretybeforeyou attemptto assernbleor
operateyournew lrimmer.
IMPORTANT: Thistrimmerisshipped
WITHOUT OILOR GASOLINE intheengine.
yournew ldmmerhas been assombledat tha
facto_ withthe exceptionofthasepartsleft
unassembledfor shippingpurposes. Allparts
suchas nuts,washers,belts,etc.,necessary
to completethe assemblyhavebeen placed
Inthe partshag. To ensuresafeand proper
obera_on nf yourtrimmer,allpartsand
hardwareyou assemblemust be tightened
securely.Uso_e oonect toolsas necass_y
to ens,xe properUghfz_as.
Loose parts Packed Separately
20 OZ.
Bottle of oU
Tdmmer tJnes
(2)sets
(0.155 dlarnetsr
x 18,75 Inches long)
TO REMOVETRIMMER FROM CARTON
1. Remove loose parts included with
tdmmer.
2. Cut down two end comers of carton
and lay end panel down flat.
3. Remove all packing materials.
4. Roll trimmerout of carton and check
carton thoroughly for additional loose
parts.
HOWTO SET UPYOURTRIMMER
TO UNFOLD HANDLE
IMPORTANT: Unfoldhandlecarefulysoas
not to ptechor damagecoo'_olcables.
1. Loosen handle knob enough to allow
upper handle to be unfolded from the
shipping position.
2. Raise upper handle section into place
on lower handle and tighten handle
knob.
3. Remove handle padding holding
trimmer head control bar to upper
handle.
Your trimmer handle can be adjusted for
your trimmingcomfort. Refer to "ADJUST
HANDLE" in the Service and Adjustments
section of this manual.
Upper handle
Liftup
knob
handle
KNOW YOUR TRIMMER
READTHIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATINGYOUR
TRIMMER, Compare theilusb'ations withyourfdmmer tofamiliarizeyourselfwiththe location
of Veriouscontrolsand a_ustments. Save thismaneaJforfuturereference,
"l_ese iymbo_ may appear on your trimmer or In IRma_m supplied with the product Learn and _
Omirmea_klg. WARNING
Am nwn= m & 0
CAUTION ENGINE OFF
FAST SLOW
FUrcL OIL
Trimmer head control bar
Sta_erhendle
Gasoline cap
Engine cover
Primer
Chassis cover
IMPORTANT: Thistrimmeris shipped
WITHOUT OIL OR GASOUNE intheengine.
- Trimmer line
Tdrnmer head control bar - must be held
down to _e ha_le to engnge bimmerhead.
Release to stopthe trimmerhead.
Pdmer- pumps additionalfuel fi'om
carburetorto thecylinderfor usewhen
startinga coldengine.
Throttleconb'ol- usedforstaringand
stoppingthe engine and allowsyouto select
eitherfast orslowen_ne speed.
Starter handle - usedforstartingtheengine.
Theoperationofanytdmmercanresultin
foreign objects being thrown into the
eyes, which can result in severe eye
damage. Always wear safety glasses or
eye shields while operating your trimmer
or performing any adjustments or repairs.
We recommend a wide vision safety mask
over spectacles or standard safety
glasses.
HOWTO USEYOURTRIMMER
ENGINE SPEED
The engine speed is controlled by a
throttie located on the side of the upper
handle. Fast positionis for starting and
normal tdmming. Slow is for lighttrimming
and fuel economy. Stop is for stopping the
engine.
,,. @
l Ij
I I
TRIMMER HEAD DRIVE CONTROL
Yourtrimmer is equipped with a trimmer
head ddve control bar which will require
the operator to be positioned behind the
trimmer handle to operate the trimmer.
• Tdmmer head rotationis controlled by
holding the tdmmer head control bar
down to the handle.
• Trimmer head rotation will stop when
the control bar is released.
TO ADJUSTTRIMMING HEIGHT
ACAUTION: Stop the engine and wati
for all moving parts to stop. Disconnect
spark plugwire from spark plug and
place wire where it cannot seine in
contact with plug.
The height of cut can be set to six (6)
different positionsranging from 1-1/2
inches to 3 inches. Recommended cutting
height for the average yard is 2 inches.
1. To adjust tdmming height, push in the
locking plate tab and move tdmmer
head up or down to desired position.
2. Release tab and be sure head is
locked into one of the six (6) height
positions.
Adjustable
Trimme
Head
Locking
Plate Tab
BEFORE STARTINGENGINE
ADD OIL
Yourb'imrneris shippedwithout oil in the
engine. For tyPeand grade of oilto use,
see "ENGINE" in the Maintenance section
of this manual.
A CAUTION: DO NOT overfillengine with
oil, or it will smoke on startup.
1. Be sure tdmmer is level and area
around oil fill is clean.
2. Remove oil dipstick from oil fill spout.
Make sure that rim of spout is clean.
3. Youreceivea20oz.containerofoil
withtheunit.Slowlypour3/4(15oz,)
oftheoilfromthecontainerdownthe
oilfill spout into the engine.
4. Wait one minute to allow oil to settle.
Insert and tighten dipstick, then
remove it to check oil level.
5. Continue adding small amounts of oil
and rechecking the dipstick until it
reads full, DO NOT overfill, or engine
will smoke on startup.
6. Always be sure to retighten oil dipstick
before starting engine.
• Checkoillevelbeforeeachuse.Add oilif
needed. Fil to UI lineondipsf_ck.
• Change the oilafterevery 25 hoursof
opere'&_noreach season. You may need
to changeIhe oil moreoften underdusty,
dirtyconditions.
ADD GASOUNE
• Fillfueltank.Use fresh,dean,regular
unleadedgasoine with a minimumof 87
octane. Do not mix oilwithgasoline.
Purchasefuel inquantitiesthat can be
usedwithin30 daysto assurefual
freshness.
_;iLWARNING: Expedence indicates that
alcohol blended fuels (called gasohol or
using ethanol or methanol) can attract
moisture which leads to separation and
formation ofacids during storage. Acidic
gas can damage the fuel system of an
engine while in storage. To avoid engine
problems, the fuel system should be
emptied before storage of 30 days or
longer. Drain the gas tank, start the
engine and let it run until the fuel lines
and carburetor are empty. Use fresh fuel
next season, See Storage Instructionsfor
additional information. Never use engine
or carburetor cleaner products in the fuel
tank or permanent damage may occur.
A CAUTION: Fill to bottomof gas tank
fillerneck. Do not overfill. Wipe offany
spilled oil or fuel. Do not store, spillor
use gasoline near an open flame.
Gasolinefillercap
Eng
TO START ENGINE
1. To starta coldongiea, push_mer three
(3)flmes hefore lf_ing tostart. Usea fin_
push. Thisstepis notusually necessary
when staring an enginewhichhas
alreadyrunfor a few minutes.
2. Move throttle con_oflevertotast position.
3. Hold upperhandlefirmlyand pul starter
handlequickly. Do notallowstarterrope
to scap bask.
TO STOP ENGINE
• To stopengine,movethrottlecontrollever
to step position.
NOTE: In eaoler weather itmay be
necessary to repeat pdmingsteps. In
warmer weather overpdmingmay cause
flooding and engine will not start. If you
do flood engine, wait a few minutes
before attempting to start and do not
repeat priming steps, __1_/_
Throttle \\ _"
Starter
handle_
TRIMMING TIPS
• Set the throttle controlinthe fast
position, If the weeds or grass are tall
and thick, operate the trimmerat a
slower walking speed.
• Frequentlyclean the undersideof the
tdmmer to remove any grass buildup.
Keep top of engine around starterdear
and dean of grass clippingsand chaff,
This will help engine air flow and extend
engine lIfe.See =TOREMOVE ENGINE
COVER" in the Maintenance section of
this manual.
• For best results and longer lasting line,
use the ends of the line to do the cutting.
This is easily done by moving slowly
through very thick and heavy weeds.
• Use the left side oftdmmer whan
tdmmingalong fences, walls, flowerbeds
and other such objects.
• Iftrimmerlioes heeame tea short,it will
take longerto completethe job. If
tdmmer linesare wornto less than half
their originallength,they should be
replaced. See "TO REPLACE TRIMMER
LINE" in the Maintenance sectionof this
manual,
• Trimmer head contact withconcrete,
asphalt or otherhard surfacesmay
cause premature wear of the ballon .
bottomof trimmerhead.
aESOP,,SEnV,CE ;.' 'ISERVIOE
DATES
IT Check for Loo_e Fasteners _ (I/
=R iClean Tdmmer I¢# lb#
I
M clean Under Engine Cover I_z Ik/
E_ Check drive belt/pulleys
R Check/Replace Tdmmer Lines I1_:_
Check Engine Oil Level I_
Change Engine Oil _1_/t,2
Clean Air Filter I_ 2
| Inspect Muffler V S
N! cl..no_nepl*o_SparkPlug V'
Replace Air Filter Paper Cartridge le/=
1 - Change n,_ e of_m when opetatlngundm a heew k:_d o=-inhigh acnblefltte_.
2 - Servic6 m_e ol_n v_ op_ in dirtyor dusty ¢_lilions,
3 - I_epla_ _ lineswhen they have_ _ot_lf their originallength,
GENERAL RECOMMENDATIONS
The warranty on this trimmer does not
cover items that have been subjected to
operator abuse or negligence. To receive
full value from the warranty, operator must
maintain trimmer as instructed in this
manual.
Some adjustments will need to be made
periodicallyto propedy maintain your unit.
AU adjustments in the Service and
Adjustments section of this manual should
be checked at least once each season.
• Once a year, replace the spark plug
and replace air filter element. A new
spark plug and clean/new air filter
element assures proper air-fuel mixture
and helps your engine run better and
last longer.
• Follow the maintenance schedule in
this manual,
BEFORE EACH USE
1. Check engine oil level,
2. Check for loose fasteners.
3. Clean under engine cover.
LUBRICATION
To prolongthe useful life of your trimmer,
change engine oil as recommended in
this section of Owner's Manual.
IMPORTANT: Do notolorgreaseplas_c
wheel beanngs.Vkcous lubricantsw=]la_act
dustand dirtthatwil sbertenthe lifeof the
self-lubricating bearings.If _u _ theymust
be It_0dcated,use onlya dry,pewdered
graphite type lubricantsparingly.
PRODUCT SPECIFICATIONS
Serial No.
Date of Purchase:
Gasoline "l_pe: Unleaded Regular
Gasoline Capacity: 1.25 Quarts
OII lype: SAE 30 (Above 32° F)
(API-SF-SJ) SAE 5W-30 (Below 32_F)
Oil Capacity: 20 Ozs.
Spad_ Plug : Champion RJ19LM4
(Gap: .045")
l_mmer Une Diameter: .155 inch
Trimmer Une Length: 18.75 inches
The model and sedal numbers will be found on
a decal attached to the rear of the trimmer.
Record both serial number and date of
purchase in space provided above,
TRIMMER
Alwaysobserve safetyruleswhen perform-
ingany maintenano_.
TIRES
• Keep tiresfleeof gasolne, oil,or insect
cunlmlchemicalswhichcan harm rubber.
• Avoidstumps,stcues,dcep ruts,sharp
objectsand o_er hazardsthat may cause
tiredamege.
TRIMMERUNE
For best results, replace trimmer lines
when they have worn to half their odginal
length. Use .155 inch diameter tdmmer
line. Cut new tdmmer line length to 18-3/4
inches. After new line is installed on
trimmer head, check all lines so they do
not vary more then one (1) inch in length.
This is importantto make sure the trimmer
head is balanced and will not vibrate
abnormally.
AWARNING: Use only the specified
trimmer line. Do not use other matedals
suchas wire, string, rope, etc. Wire can
break off during tdmming and become a
dangerous missile that can cause serious
injury.
TO REPLACE TRIMMER LINE
1. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Remove worn trimmer line from line
carrier plate.
3. Fold new, cut to length, trimmer line in
half and insert folded end through
carder plate opening to back side of
retainer clip.
4. With folded end of line at back side of
retainer clip, pull line outward until
line is fully seated under the retainer
clip.
5. Repeat on other side of carder plate.
6. Check all lines to be sure they are the
same length.
7. Reconnect spark plug wire to spark
plug.
Trimmer
line
Carrier plate
opening
clip
ENGINE
LUBRICATION
Use only high quality detergent oil rated
with API sen/ice classificationSF-SJ.
Select the oirs SAE viscosity grade
according to your expected operating
temperature.
SAE VISCOSITY GRADES
NOTE: Although multi-viscesityoils
(5W30, 10W30 etc.) improve starting in
cold weather, these multi-viscosity oils
will result in increased oil consumption
when used above 32°F. Check your
engine oil level more frequently to avoid
possible engine damage from running
low on oil.
Change the oil after every 25 hours of
operation or at least once a year ifthe
unit is not used for 25 hours in one year.
Check the crankcase oil level before
starting the engine and after each five (5)
hours of continuous use. Tighten oil plug
securely each time you check the oil
level.
10
TOCHANGEENGINEOIL
NOTE:Beforetippingtrimmertodrain
oil,drainfueltankbyrunningengine
untilfueltankisempty.
1. Disconnectsparkplugwirefromspark
plugandplacewirewhereit cannot
comeincontact with spark plug.
2. Remove engine oil cap; lay aside on a
clean surface.
3, Tip trimmer on its side as shown and
drain oil into a suitable container,
Rock trimmer back and forth to
remove any oil trapped inside of
engine.
4, Wipe off any spilled oil from tdmmer
and side of engine.
5, Fill engine with oil (See "ADD OIL" in
the Operation section of this manual),
6. Replace engine oil cap,
7. Reconnect spark plug wire to spark
p(ug.
AIR FILTER
Your engine wiU not run properly and may
be damaged by using a dirty air tilter.
Replace the air filter every 100 hours of
operation or every season, whichever
occurs first. Service air cleaner more
often under dusty conditions. Do not
wash air filter,
TO CHANGE AIR FILTER
1. Remove the air filter by tuming
clockwiseto the stop and pull away
from collar.
2. Remove filter from inside of cover.
3. Clean the inside of the cover and the
collar to remove any dirt accumula-
tion.
4, Insert new filter into cover,
5, Put air filter cover and filter into collar
aligningthe tab with the slot.
6, Push in on cover and turn counter-
clockwise to tighten.
Collar
i _ Clip
Slot
Air filter
Air filter cover
Turn
clockwise
to
Turn
counter-
clockwise to tighten
MUFFLER
Inspect and replace corroded muffler as
it could create a fire hazard and/or
damage.
SPARK PLUG
Replace spark plugs at the beginning of
each mowing season or after every 1013
hours of operation, whichever occurs first.
Spark plug type and gap setting are
shown in =PRODUCT SPECIFICATIONS"
in Maintenance section of this manual.
CLEANING
IMPORTANT: For best performance,
keep tdmmer free of built-upgrass and
trash. Clean the underside of your
tdmmer after each use.
ACAUTION: Disconnect spark plug wire
from spark plug and place wire where it
cannot come in contact with the spark
plug.
• Turn trimmer on its side. Make sure air
filter and carburetor are up. Clean the
underside of your trimmer by scraping
to remove build-up of grass and trash.
• Clean engine often to keep trash from
accumulating. A clogged engine runs
hotter and shortens engine life.
• Keep finished surfaces and wheels
free of all gasoline, oil, etc.
• We do not recommend using a garden
hose to clean trimmer unless the
electdcal system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in
shortened engine life.
11
CLEAN UNDER ENGINE COVER
Clean under engine cover before each
use, or more frequently in heavy cutting
or dirty conditions. Engine cover screen
and engine air intake screen must be
kept free of dirt and chaff to prevent
engine damage from overheating.
Be sure engine is cool before cleaning.
1, Unscrew knob on top of cover.
2. Lift cover up and away from engine.
Knob
Starter
rope
3. Clean cover and cover screen
thoroughly.
4. Clean top of engine and air intake
screen.
5. Replace engine cover and tighten
knob securely. Be sure the front tabs
of engine cover are located in the
slots in engine housing.
Threaded
Engine_
cover -- _
screen
Air intakescreen
Housing slots
12
CAUTION: Before performing any
service and adjustments:
1. Stop engine.
2. Make sure the rotating lines and all
moving parts have completely
stopped.
3. Disconnect spark plug wire from spark
plug and place where it cannot come
in contact with plug.
TRIMMER
TO ADJUSTTRIMMING HEIGHT
See "TO ADJUSTTRIMMING HEIGHT"inthe
OperalJonsectionotW_ manual.
TO ADJUST HANDLE
The upper handle may be adjusted to
different height positions.
• Loosen handle knob only enough to
allow the upper handle to pivot to the
desired position.
• Tighten handle knob securely.
NOTE: The handle knob and bolt may be
reversed for left handed operation.
Upper han_e
TO REMOVE/REPLACE TRIMMER HEAD
DRIVE BELT
1, Remove screw at front of chassis
cover.
2. Lift cover upand away from tdmmer.
Chassis
3. Remove the two (2) screws on sides
of trimmer secudng the debris shield.
4. Turn trimmer on its side with carbure-
tor and fuel cap up.
5. Remove the two (2) screws on
underside of trimmer secudng the
debds shield.
6. Slide the debris shield rearward and
remove.
7. Remove belt from engine pulley on
crankshaft.
pulley
Han_e knob
Debris shield screws
13
8. Remove belt from trimmer head pulley.
9. Note the position of the control cable
and idler retum spdng, then remove
idler assembly from chassis and
remove belt and idler from trimmer.
10.Remove belt from idler assembly by
removing bottom belt keeper and idler
pulleys.
11.Assemble new belt, idler pulleysand
bottom belt keeper to idler bracket.
Tighten pulley bolts securely.
NOTE: Be sure belt is inside top belt
keeper on idler assembly.
12.Position belt and idler assembly in
trimmer, reconnect idler spring and
assemble idler to chassis.
13.Install belt around trimmer head pulley
and engine pulley.
14.Replace debds shield and tighten the
four (4) screws securely.
15. Replace chassis cover and tighten
screw securely.
Always use Craftsman replacement parts
to assure proper fit and long llfe.
idler bracket Flat idler
BoSom
'_ _ belt
keeper
Ldlerassembly .._ '_-.Top belt keeper _ t
Bolt Trimmer head pulley
ENGINE SPEED
Your engine speed has been factory set.
Do not attempt to increase engine speed
or it may result in personal injury. If you
believe that the engine is running too fast
or too slow,take your unit to a Sears or
other qualified service center for repair
and/or adjustment.
CARBURETOR
Your carburetor has a nonadjustable fixed
main jet for mixture control. Ifyour engine
does not operate propedy due to sus-
pectad carburetor problems, take your
unit to a Sears of other qualifiedservice
center for repair and/or adjustment.
IMPORTANT: Never tamper with the
engine governor,which is factory set for
proper engine speed. Overspeeding the
engine above the factory high speed
setting can be dangerous. Ifyou thinkthe
engine-governed high speed needs
adjusting, take your unitto a Sears or
other qualified service center, which has
proper equipment and experience to
make any necessary adjustments.
14
Immediatelyprepareyear bimmerfor storage
atthe endof theseaeaner ifthe unitwtllnot
be usedfor 30 daysor more.
TRIMMER
When5_mmeristo be storedfora periodof
time,dean itthoroughly,removeall dirt,
grease,leaves,etc. Storeina dean, dryarea.
1. Cleanentre ldmrnar(See "CLEANING" in
the Maintenancesectionof thismanual).
2. Lutxicateas shownin _ Maintenance
secifon of _s rnanuai.
3. Be surethatallnots, bolts,serews,and
p_nsare securelyfastened. Inspect
movingpartsfor damage, breakageand
wear. Replaceifnecessary.
4. Teach up all rustedor chippedpaint
surfaces;sand lightlybeforepaining.
HANDLE
Youcanfold yourb'immerhandlefor storage.
• L_:<_senhandleknobenoughto alow
upperhandleto be folded forward.
IMPORTANT: V_nenfolding the handlefor
stcmgeor b'easpertatJon,hesureto foldthe
handleas shown eryoun_y damage the
controlcables.
handle
Handle knob
ENGINE
FUELSYSTEM
IMPORTANT: It isimp<xtantte preventgum
depositsfromforminginessentialfuel system
tank dudngstorage.Also, experience
indicatesthat alcoholblendedfuels (called
gasuhelor usingethanolor methanol)can
attractmoisturewhichleads to separalton
and formation of adds duringstorage.Acidic
gas _ damagethefuel systemof an
engine while in storage.
1. Drain the fuel tank.
2. Start the engine and let it run until the
fuel lines and carburetor are empty.
• Never use engine or carburetor cleaner
productsin the fuel tank or permanent
damage may occur.
• Use fresh fuel next season.
NOTE: Fuel stabilizerisan accaptaUe
aitemativein minin_ng the formationof fuel
gumdepositsduringstorage. Add stabiizer
to gasolineinfueltankor storagecontainer.
Alwaysfollowthemix ra{_ofoundon stabgizer
ceatainer. Run engine at least10 minutes
after addi'K3 stabilizerto allowthe stabilizerto
reachthe carburetor. Do not drainthe gas
tank and carburetor if usingfuel stabilizer.
ENGINEOL
Drab oil (withenginewarm) and replacewith
cleanengineoil. (See"ENGINE" le the
Maintenancesectionof thismanual).
CYUNDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.
3. Pullstarter handle slowly a few times
to distribute oil.
4. Replace with new spark plug.
OTHER
• Do notsteregasolinefromone seasonto
another.
• Replaceyear gasoline can if year can
startsto rusL Rust and/or didinyour
gasolinewillcause problems.
• Ifpossble, storeyourunitindoorsand
covoritto givepretecltonfrom dustand did.
• Cover year unitwitha suitableprotective
coverthatdoesnot retainmoisture.Do
notuseplaslJc.Plasticcannotbreathe,
whichalows condensationto form andwill
causeyourunitto mst.
IMPORTANT: Nevercovertrimmerwhile
engineand exhaustareas are stillwarm.
• I=CAUTION: Never store the trimmer
with gasoline in the tank inside a building
where fumes may reach an open flame or
spark. Allow the engine to cool before
parts suchascarburetor, fuel filter,fuel hoseor15 storing in any enclosure.
TROUBLESHOOTING
PROBLEM CAUSE
Doesnotstart 1, Dirtyairfilter.
Loss of power
Excessive
Vibration
Starter rope hare
topull
Loss of head
drive
Hard to push
Poor trimming
j performance
Trimmer head
does not
retain line
2. Out of fuel.
3. Stale fuel.
4. Water in fuel.
5. Spark plug wire is
disconnected.
6. Bad spark plug.
7. Throttle control lever not
in correct position
(if equipped).
1. Dirty airfilter.
2. Buildupof grass, leaves,
and trash under trimmer.
3. Too much oil in engine,
4. Walking speed too fast.
1. Lines uneven or broken.
2. Loose nuts or bolts.
3. Damaged trimmer head.
1. Bent engine crankshaft.
1. Belt not driving.
1. Handle height position not
rightfor you.
1. Trimmer line length is
too short.
2. Throttle control lever not
in correct position
(if equipped).
1. Trimmer line not
propedy installed.
2. Broken line retainer clip.
3. Incorrect size of
trimmer line.
CORRECTION
1. Clean/replace air filter.
2. Fill fuel tank.
3. Drain tank and refillwith
_esh clean fuel.
4. Drain fuel tank and
carburetor and refill tank
with fresh gasoline.
5. Connect wire to plug.
6. Replace spark plug.
7, Move throttle lever to FAST
position.
1. Clean/replace air filter.
2. Clean underside of trimmer
and trimmer head.
3. Check oil level.
4. Trim at slower walking
speed.
1. Check trimmer lines.
2, Check all hardware,
including engine bolts.
3. Check/repair tdmmer head.
1. Contact a Sears or other
qualified service center.
1. Put belt on pulleysor
replace belt if broken,
1. Adjust handle height
to suit.
1. If line is worn or broken to
half original length,
replace line.
2. Move throttle lever to FAST
position.
1. Follow instructionsin
Maintenance section.
2. Replace string carder plate
assembly.
3. Use ,155 diameter
trimmer line.
16
CRAFTSMAN WEED TRIMMER-- MODEL NUMBER 917.773423
18
1
11
26
27
14
27
25
34
CRAFTSMAN WEED TRIMMER- - MODEL NUMBER 917.773423
KEY PART
NO. NO. DESCRIP11ON
1
2
3
4
5
6
7
8
9
f(}
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
34
35
- - - Engine, Craft=man,
Modol Number 143.015502
(See BreakdOWn)
150406 Bolt, Engine Mounting 3/8-16
169791 Pulley, Engine (Lndudes Setscrew, Key #4)
STD502582 Setscrew, Pulley
177622. Cover, EngJr-,e,with Screen
174274 Kr!ob, Engine Cover
174030 StUd, Engine Cover
169821)(479 Handle, Lower
150076 Screw, Hex Washer Head 5/16-18 x ,75
t69797X479 Handle, Upper
170980 Bolt, Handle
136376 Kr_ob,Handle
170681 Acljuster, Handle, Inside
170682 Adjuster, Handle, Outolde
170554 Spdng, Handle Adjust
15363_ Guide, Rope
132004 Locknut 1/4 x 20
66426 WIreTire
176983 ControlBar
174934 Throttle Control
158755 Screw, Hex Washer Head
178700X004 Axle Shaft Assembly
150078 Screw, Hex Washer Head 5/16-18 X .75
52160 Washer, Axle
57143 Washer, Wave
752063 Wheel, 14 x 2
83923 Hex Flange Locknut 3/8-16
176999 DrtveCable
174034 Decal,Warning
174038 Decal, Engine Cover
86899X004 Bracket, Upstop
750634 Screw, Thd. Roll. #10-24 x 5/8
178779 Owner's Manuol, EngJLsh/SpanLsh
AvollabLeaccessories not included with trimmer:
"/t33623 Gas Can (2.5 gal.)
7133600 SAE 30W OII (20 oz.)
7t 7_gt TSmmer Ltne (Pack of 24 s_ngs, .155 dia._
NOTE: All component dimensions given inU.S. inches
1 Inch = 25.4 rnrn
35
CRAFTSMAN WEED TRIMMER-- MODEL NUMBER917.773423
20 44 47 21
14
43
4
17
23
24
13
r
27
32
0_31
5O
36
CRAFTSMAN WEED TRIMMER-- MODEL NUMBER 917.773423
KEY PART
NO. NO. DESCRIP'nON
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2O
21
22
23
24
25
26
27
28
29
3O
31
32
33
34
36
37
38
39
4O
41
43
44
45
46
47
48
49
50
61
52
174031X558 Chassis Assernbly
169802 Line,Trimmer. 155 diameter x 18.75 Io_g
173715 Screw, Self-Tapping 5/16-18 x 1
169790 V-Bert
172145X004 Bracket, Idler
166042 Pulley, idler, V-Groove
173716 Bolt, Hex Head 318-16 x 1.25
751592 Lock,nut, Hex 3/8-16
166043 Pulley, Idler, Rat
160829 Bolt,Shctllder
155552 Locknut 5/16-18
173717 Spacer
174719 Boit,Shoulder
145212 Locknut, Flange
173811 Spring, Return
177811 Shield, Debds
57808 Screw 114-20 x 112
85768 Screw #10-24 x 3/4
175301 Skirt
170553 Cover, Chassis, Top
149746 Screw #10-24 x 1-314
STD541137 Nut 3/8-24 UNF
STD561137 Washer, Lock 3/8
$10551037 Washer, Flat 318
169792 Pulley, Driven
172551 Spacer, Pulley
174549 Be_deg
172520 Jackshafl
169766X479 Cover, Chassis, Bottom
174543 Splndle Housing Assembly
(* Includes Upper Bearing, Key #27)
174581 Ring, RatainLng, External, 17ram
176973 Spring, Locldng Plate
172519 Locking Plate
174544 Carrier Plate Assembly
172516 Cover, Bearing
174580 Ring, Retaining, Internal,40ram
172523 MowBall
172636 Bolt, MOWBall
172342 Head Assembiy, CompLete
(InCkldeS Key Numbers 22-28, 30-39)
174029 Spacer
174042 Decal, Instruction
174035 Decal, Chassis Cover
174596X479 BertKeeper, Bottom
17060408 Screw, Sed-Tapping
174036 Decal, Instruction
52784 Washer
76399 Screw
59931 Lock,nut
177972 Skid
178848 Screw #10-16 x 5/8
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
37
CRAFTSMAN 4-CYCLE ENGINE MODELNUMBER143.015502
40O
135
130
416
185
120
119
125
46 309A
311A ,
38
CRAFTSMAN 4-CYCLE ENGINE MODELNUMBER143.015502
KEY PART
NO. 140. DESCRIPI_N
1 37266
2 26727
6 33734
7 36557
12 36775
12A 36558
12B 36694
14 25277
15 30589
16 34839A
17 31335
18 651018
19 37329
_0 32_0
30 37459
40 40027
40_8
41 4(X_5
480_6
42 48006
4O807
43 2O381
45 36777
46 32610A
48 27241
50 37460
52 29914
69 37609
76 37808
72 37614
75 27897
80 30574A
81 305_0A
82 30591
83 30588A
86 650486
89 610961
80 611213
650815
93 650816
100 34443C
101 610118
103 651807
104 37480
110 37574
119 36787
120 36_5
126 37286
126 37289
130 80_1A
135 37596
160 31672
151 31673
151A 48017
_'Y PART
NO. NO. DESCRIPTION
Cylinder (Incl. 2120 _ 150) 169 36783 * Gasket, Valve Cover
DowelPin 172 36784 Valve Cover
Breather Element 174 30200 Screw, 16-24 x 9/16"
Breather Ass'y, (Ir_, 6 & 12A) 178 29752 Nut & Lock Washer, 114-26
BreatherTube 179 30593 Retolner Clip
Breether Cover&Tube (IncL 12B) 182 6201 Screw, 1/4-28 x 718"
Breather Tuha Elpew 184 26756 * Gasket, Carburetor-Intake Pipa
Washer 185 36785 Intake Pipe
Govemor Rod (taol. 14) 186 36255 Govemor Link
Governor Lever 200 37134 Control Bracket (Incl. 206)
Governor Lever Clamp 206 610973 Terrnina_
Screw, T-16, 8-32 x 19/64" 207 36280S Throftle Link
Governor Spdng 209 80200 Screw, 10-24 x 9/16"
Oil Seal 223 650451 Screw, 1/4-20 x 1"
Crankshaft 224 36786 * Intake Pipe Gasket
Piston, Pin & Ring Set (Std.) 238 650932 Screw, 10-32 x 49/64"
Piston, Pltl & Ring Set(.010"OS) 239 34338 * Air Cleaner Gasket
Piston & PipAssy.(Std.)(Ir, cl.43) 241 36919 AirCleanerCollar
Piston & Pin Ass'y. (.010" OS) 245 36805 Air Cleaner Filter
(Includes Key Number 43) 250 37122 AirCleaner Cover
Ring Set (Std.) 260 36980 BLowerHousing
Ring Set (.010" OS) 261 30280 Screw, 10-24 x 9/16"
PLntonPIr_Retaining Ring 262 650831 Screw, 1/4-20 x 112"
Connecting Rod Assy. (Incl. 46) 275 36790A Muffler
Cormentiilg Rod Bolt 277 650988 Screw, 1/4-26 x 2-9132"
Valve Lifter 285 35287A Starter Cup
Camshaft (Exhaust MCR) 287 650926 Screw, 8-32 x 21164"
(Includes Key Number 104) 296 34357 FuelLIne
Oil Pump Ass'y. 292 26466 Fuel LineClamp
• MounSng Flange Gasket 298 28763 Screw, 10-32 x 35/64"
Mounltng Flange 300 35686 Fuel Tank (Incl. 292 & 301)
(Includes Key #72-83,306) 301 36246 Fuel Cap
Ql_Drain Plug 306 35577 Oil FilITube
Oil Seat 306 37616 * "O'-RJng
Governor Shaft 307 35499 "O'-PJng
Washer 309 650562 Screw, 10-32 x 3/8"
Governor Gear Ass'y. (Incl, 61) 309A 650783 Screw, 10-24 x 314"
Governor Speol 310 35576 Dipstick
Screw, 114-20 x 1-114" 311A 37611 Holdt3own Bracket
Flywheel Key 313 34080 Spacer
Rywheel 370A 36261 LubdCaltonDecol
SellevilLeWasher 370C 37316 Primer Oecol (3X)
Flywhael Nut 380 640262 Carburetor (Incl. 184
Solid State Ignition 390 580763 Rewind Starter
Spark Ping Cover 406 37613 Gasket Set
Screw, T-15, 16-24 x 16116* (Includes oil Items M_rked *)
Cam Bushing 416 36086 Spark Arrestor Kit
Ground Wire (includes Key # 417) (Opltonal)
• Cylinder Head Gasket 417 650821 Screw, 10-32 x 1/2" (Op_onal)
Cy6nder Head 900 780837B Replacement Short BLock
Exhaust Valve (Std,) (Incl. 151) 750837B, order ftom71-999
Intake Valve (9td.) (Incl, 151
Screw, 5/16-18 X1-1/2" -- -- RPM High 3450 to 3750
Resietor Spark Plug (RJ 19LM4) ---- RPM Low 2000 to 2300
Valve Spring
Valve Spring Cap NOTE: All component dimensions given LnU.S. inches
Ir_ake Valve Seal 1 inch = 26,4 mm
39
CRAFTSMAN 4-CYCLE ENGINE MODELNUMBER143,015502
PART
NO, NO.
-- 640262
1 631615
2 631767
4 631184
5 631183
6 640070
7 656506
16 631807
17 651025
18 630766
20 640018
20A 640200
25 631867
27 631024
28 632019
29 631028
30 631021
31 631022
35 64(_59
36 640080
36A 632766
37 632547
40 640175
44 27110A
47 630748
48 631027
60 632760B
DESCIRIP'i_ON
Carburetor (Incl. 184 ot Engine Parts List)
Throt0e Shaft & Lever Assembly
Throttle Return Spring
• Duat Seal Washer
• Duat Seal (Throttle)
• Throttle Shutter
• Shutter Screw
Fuel Fitting
Throttle Crack Screw/Idle Speed Screw
TensionSpdng
Idle Restrictor Screw
Idle Restdctor Scrwe Cap (Black)
Float Bowl
• Float Shaft
Float
• Float Bowl"O" Ring
* Inlet Needle, Seat, & Clip (IncL.31)
SpdngCllp
Pdmer Bulb/Ratainer Ring
Main Nozzle Tube
Ca_urator Tube
• "0" Ring, Main Nozzle Tube
High Speed Bowl Nut
• BowlNut Washer
• Welch Plug, IdleMiature Well
• Welch Plug, Atmospheric Veat
Repair kit (Incl, Items Marked *)
4O
CRAFTSMAN 4-CYCLE ENGINE MODELNUMBER143.015502
I
12
/
13
\
KEY PART
NO, NO, DESCRIPllON
---- 590763 Rewind Starter
1 590599A Spdng Pin (Incl. 4)
2 590600 Washer
3 590696 Retainer
4 590601 Washer
5 590697 Brake Spring
6 590698 Starter Dog
7 590699 Dog Spring
8 590700 Pulley & Rewind Spring Ass'y.
11 590764 Starter Housing Ass'y.
12 590535 Starter Rope (Length 98" x 9164" dla.)
13 590701 Starter Handle
41
For repairofmajorbrandappliancesinyour own home...
nomatter whomade it, no matter whosold
1-8OO-4-MY-HOMEe A_n_ dayorr_t
(1_) (u.s._and_)
For repairof carry-inproducts likevacuums, lawn equipment, and
electronics,caUforthe nearestSearsParts and RepairCenter.
1-800-488-1222 ,,_tane,dayornig_(U.S.A.rely)
W1NwJJear_coltl
Forthe replacementparts, accessoriesand owner'smanuals
that you needtodo-it-yourself,callSears PartsDIrect_]
1-800-366-PART 6 a.m.- 11p_n., 7days aweek
(1-800-366-7278) (U.S.A._Ny)
_ww_ears.com_artsdrect
To purchaseor inquireabout a Sears ServiceAgreement
or Sears MaintenanceAgreement:
1-800-827-6655 (u.s.A) 1-800-361-6665 (Canada)
7 a.m.- 5 p.m.,CST, Mort.- Sat 9 a.m.-8 p.m.EST, M - F,4 p.m. Sat.
® Registered Trademark I TM Trademark I s_ Service Mark of Seam, Roebuck and Co.
® Marca Registrada / TMMarca de Fabrica / s_ Marca de Servicio de Sears, Roebuck and Co.
MCMarque de commerce / _o Marque d_posde de Sears, Roebuck and Co.
178779 02.22.01 BY Printed in U.S.A.
