Craftsman 917.773410 User Manual

Owner's Manual

[CRAFTSMAN°[

4.0 HORSEPOWER
20INCH CUT

WHEELED
WEEDTRIMMER

Model No.

917.773410

• Safety

• Assembly

• Operation

• Maintenance

• Espahol

• Repair Parts

A_,KCAUTION:

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.com/craftsman

Warranty
Safety Rules
Assembly
Operation

Maintenance Schedule
Maintenance

2 Product Specifications
2 Service and Adjustments 1:

5 Storage 1,
6 Troubleshooting 1!
9 Repair Parts 3[

9 Parts Ordering Back Cove

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 instructions in

the owner's manual, Sears will repair free of charge any defect in material or workman-
ship.

If this Craftsman Weedtrimmer 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 during 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 Weedtrimmer to the nearest
Sears Service Center in the United States. This warranty applies only while this produc'
is in use in the United States.

This Warranty gives you specific legal rights, 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 trimmer 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 (Section 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

authorized service center/department (See REPAIR PARTS section of this manual).

9

The operation of any trimmer can result in foreign objects 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. The safety goggles

provided with your trimmer may be worn over spectacles.

I. GENERAL OPERATION

• Read, understand, and follow all

instructions on the machine and in the
manual before starting. Be thoroughly

familiar with the controls and the proper

use of the machine before starting.

• Do not put hands or feet near or under
rotating parts.

• Keep all parts of your body away from

muffler and spinning line. A hot muffler
can cause serious burns.

• 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 trimming, particularly
small children and pets. Stop machine

if anyone enters the area.

• Wear appropriate clothing such as a

long-sleeved shirt or jacket. Also wear
long trousers or slacks. Do not wear

shorts.

• 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
boots work well for most people. These

will protect the operator's ankles and
shins from small sticks, splinters, and

other debris, 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 instructions for

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 risk

of injury.

• Stop the rotating trimmer head when
crossing gravel drives, walks, or roads.

Wait for the cutting lines to stop rotating.

• Stop the engine (motor) whenever you
leave the equipment, before cleaning,
repairing or inspecting the unit. Be sure
the trimmer 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 should start to vibrate
abnormally, stop the engine (motor)

and check immediately for the cause.
Vibration is generally a warning of

trouble.

• Always wear safety goggles or safety
glasses with side shields when operat-
ing machine.

3

II. SLOPE OPERATION

Slopes are a major factor 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 trim it.

DO:

• Trim 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.

DONO_

• Do not trim near drop-offs, ditches or
embankments. The operator could lose

footing or balance.

• Do not trim excessively steep slopes.

• Do not trim on wet grass. Reduced
footing could cause slipping.

III. 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 trimming 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 |or small

children.

• Never allow children to operate the
machine.

• Use extra care when approaching blind
corners, 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 is an
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 plug to
prevent accidental starting.

• Keep nuts and bolts, especially trimme
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 debris buildup. Clean oil or fuel

spillage. Allow machine to cool before
storing.

• Stop and inspect the equipment if you
strike 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.

ta_nL.Ookfor this symbol to point out impor

t safety precautions. It means CAU-

TION!!! BECOME AWAREI!! YOUR

SAFETY IS INVOLVED.

,I(_CAUTION: In order to prevent acci-

dental starting when setting up, transport-

ing, adjusting or making repairs, always
disconnect spark plug wire and place
wire where it cannot contact spark plug.

_WARNING: The engine exhaust from

this product contains chemicals known to
the State of California to cause cancer,

birth defects, or other reproductive harm.

4

Read these instructions and this manual in its
entirety before you attempt to assemble or

operate your new trimmer.
IMPORTANT: This tdmmer is shipped

WITHOUT OIL OR GASOLINE in the engine.

Your new trimmer has been assembled at the

factory with the exception of those parts left

• unassembled for shipping purposes. All parts
such as nuts, washers, bolts, etc., necessary

to complete the assembly have been placed

in the parts bag. To ensure safe and proper
operation of your trimmer, all parts and

hardware you assemble must be tightened
securely. Use the correct tools as necessary

to ensure proper tightness.

Loose Parts Packed Separately

TO REMOVE TRIMMER FROM CARTON

• Remove loose parts included with trimmer.

• Cut down two end comers of carton and
lay end panel down flat.

• Remove all packing materials.

• Roll trimmer out of carton and check carton
thoroughly for additional loose parts.

HOW TO SET UP YOUR TRIMMER

TO UNFOLD HANDLE

IMPORTANT: Unfold handle carefully so as

not to pinch or damage control cables.

• Loosen handle knobs enough to allow
upper handle to be unfolded from the

shipping position.

• Raise upper handle section into place on
lower handle and tighten handle knob.

• Remove handle padding holding trimmer
head control bar to upper handle.

Safety 20 oz. Trimmer Lines

Goggles Bottle of oil (2) Sets

(0.130 diameter

x 16.75 inches long)

Handle knob

Lower handle

5

KNOW YOUR TRIMMER

READ THIS OWNER'S MANUALAND SAFETY RULES BEFORE OPERATING YOUR
TRIMMER. Compare the illustrations with your trimmer to familiarize yourself with the location
of various controls and adiustments. Save this manual for future reference.

These symbols may appear on your trimmer or in literaturesuppliedwith the product.Learn and understand

their meaning. WARNIIIG

A_O _ RARYOROU'IU _ @

CAUTION

FAST SLOW

FUEL OIL

Trimmer head control bar

ENGINE OFF

Throttle control

Starter handle

Handle knob

Engine oil
cap w/

dipstick

Trimmer head control lever

Gasoline cap

Engine

cover

Primer

Chassis

head

IMPORTANT: This trimmer is shipped
WITHOUT OIL OR GASOLINE in the engine.

Trimmer head control bar - must be held
down to the handle to engage trimmer head.

Release to stop the trimmer head.
Primer - pumps additional fuel from the
carburetor to the cylinder for use when
starting a cold engine.

•Trimmer line

Throttle control - used for starting and
stopping the engine and allows you to select

either fast or slow engine speed.
Starter handle - used for starting the engine.

Trimmer head control lever - used to

engage trimmer head.

6

The operation of any trimmer can result in
:oreign objects thrown into the eyes,
,vhich can result in severe eye damage.
&lways wear safety glasses or eye shields
,vhile operating your trimmer or perform-
ing any adjustments or repairs. We

recommend a wide vision safety mask
over spectacles or standard safety

glasses. The safety goggles provided with
your trimmer may be worn over spec-

tacles.

HOW TO USE YOUR TRIMMER

ENGINESPEED

TRIMMER HEAD DRIVE CONTROL

Your trimmer is equipped with a trimmer
head drive control bar and lever which

requires the operator to be positioned
behind the trimmer handle to operate the
trimmer.

• Trimmer head rotation is controlled by

holding the trimmer head control bar
down to the handle and pushing the

drive control lever forward until it clicks;
then release the lever.

• Trimmer head rotation wilt stop when
the control bar is released.

Drive
control

lever

The engine speed is controlled by a
throttle located on the side of the upper

handle. Fast position is for starting and
normal trimming. Slow is for light trimming

and fuel economy. Stop is for stopping the
engine.

To engage
trimmer head

k

Trimmer head

control bar

Trimmer head
disengaged

7

BEFORE STARTING ENGINE
ADD OIL

Your trimmer is shipped without oil in the
engine.

• Be sure trimmer is level and area around oil
fill is clean.

• Remove engine oil cap and fill to the full
line on the dipstick.

NOTE: Allow oil to settle down into engine

for accurate dipstick reading.

• Engine holds 20 oz. of oil. For type and

grade of oil to use, see "ENGINE" in
Maintenance section of this manual.

• Pour oil slowly. Do not over |ill.

• Check oil level before each use. Add oil if

needed. Fill to full line on dipstick.

• To read proper level, tighten engine oil cap

each time.

• Reinstall engine oil cap and tighten.

• Change the oil after every 25 hours of

operation or each season. You may need
to change the oil more often under dusty,

dirty conditions.

ADD GASOLINE

• Fill fuel tank. Use fresh, clean, regular

unleaded gasoline with a minimum of 87

octane. Do not mix oil with gasoline.

Purchase fuel in quantities that can be used

within 30 days to assure fuel freshness.

Ji_WARNING: Experience indicates that

alcohol blended fuels (called gasohol or

using ethanol or methanol) can attract
moisture which leads to separation and

formation of acids 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 Instructions for
additional information. Never use engine
or carburetor cleaner products in the fuel
tank or permanent damage may occur.

_, CAUTION: Fill to bottom of gas tank

filler neck. Do not overfill. Wipe off any
spilled oil or fuel. Do not store, spill or use

gasoline near an open flame.

Gasoline

Engine oil cap

TO START ENGINE

• To start a cold engine, push primer thr_
(3) times before tryingto start. Use a fin
push. This step is not usually necessal

when starting an engine which has
already run for a few minutes.

• Move throttle control lever to fast positic

• Hold upper handle firmly and pull start_
handle quickly. Do not allow starter rol:

snap back.

TO STOP ENGINE

• To stop engine, move throttle control le
to stop position.

NOTE: In cooler weather it may be
necessary to repeat priming steps. In
warmer weather overpriming may cau:

flooding and engine will not start. If yo

do flood engine, wait a few minutes
before attempting to start and do not

repeat priming steps. __7_',_

control
Throttle __,

Starter
handle

TRIMMING TIPS

• Set the throttle control in the fast
position. If the weeds or grass are tall

and thick, operate the trimmer at a

slower walking speed.

• Frequently clean the underside of the
trimmer to remove any grass build up.

Keep top of engine around starter cle_
and clean of grass clippings and chaff

This will help engine air flow and exte

engine life. See TO REMOVE ENGINI
COVER in the Maintenance section o

this manual.

• For best results and longer lasting tin(

use the ends of the line to do the cutti_

This is easily done by moving slowly
through very thick and heavy weeds.

• Use the left side of trimmer when

trimming along fences, walls, flowerb_
and other such objects.

• If trimmer lines become too short, it wi
take longer to complete the job. If

trimmer lines are worn to less than hal

their original length, they should be

replaced. See TO REPLACE TRIMME
LINE in the Maintenance section of thi

manual.

• Trimmer head contact with concrete,

asphalt or other hard surfaces may
cause premature wear of the ball on

bottom of trimmer head.

R

As COMPLETE

Check for Loose Fasteners V' I,/

T

a clean Trimmer I/ I/

I

M Clean Under Engine Cover _2

I_ Check drive belt/pulleys

i/

a Check/Replace Trimmer Lines I/3

Check Engine Oil Level I_

E Change Engine Oil I,/1,2

N

: G Clean Air Filter I_ 2

i

/ Inspect Muffler If

Clean or Replace Spark Plug I/

Replace Air Filter Paper Cartridge I/2

1 - Change more often when operating under a heavy load or in high ambient temperatures
2 - Service more often when operating in dirty or dusty conditions.
3 - Replace tdmmer lines when they have wom to half their original length.

GENERALRECOMMENDATIONS

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
periodically to properly maintain your unit.
All 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
end helps your engine run better and
last longer.

• Follow the maintenance schedule in
this manual.

BEFORE EACH USE

• Check engine oil level.

• Check for loose fasteners.

• Clean under engine cover.

LUBRICATION

To prolong the useful life of your trimmer,
change engine oil as recommended in
this section of Owner's Manual.

IMPORTANT: Do not oil or grease plastic
wheel bearings. Viscous lubricants will attract

dust and dirt that will shorten the life of the
self- lubricating bearings. If you feel they must

be lubricated, use only a dr/, powdered
graphite type lubricant sparingly.

PRODUCT SPECIFICATIONS

Serial No.
Date of Purchase:

Gasoline Type:
Gasoline Capacity:
Oil Type:

(API-SF/SG/SH)

Oil Capacity:
Spark Plug :

(Gap: .030")
Valve Clearance:

Trimmer Line Dia.:
Trimmer Line Length:

The model and serial 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.

Unleaded Regular

1.25 Quarts

SAE 30 (Above 32g F)
SAE 5W-30 (Below 32 _ F)

20 Ozs.
Champion J19LM

or RJ19LM

Intake: .004-.008
Exhaust: .004-.008

.130 inch

16.75 inches

9

TRIMMER
Always observe safety rules when perform-

ing any maintenance.
TIRES

• Keep tires free of gasoline, oil, or insect
control chemicals which can harm rubber.

• Avoid stumps, stones, deep ruts, sharp
objects and other hazards that may cause
tire damage.

TRIMMER LINE

For best results, replace trimmer lines

when they have worn to half their original

length. Use .130 inch diameter trimmer
line. Cut new trimmer line length to 16-314

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 important to make sure the trimmer

head is balanced and will not vibrate
abnormally.

_WARNING: Use only the specified
trimmer line. Do not use other materials

such as wire, string, rope, etc. Wire can
break off during trimming and become a

dangerous missile that can cause serious
injury.

TO REPLACE TRIMMER LINE

• Disconnect spark plug wire from spark
plug and place wire where it cannot

come in contact with spark plug.

• Remove worn trimmer line from line

carrier plate.

• Fold new, cut to length, trimmer line in
half and insert folded end through
carrier plate opening to back side of
retainer clip.

• With folded end of line at back side of
retainer clip, pull line outward until line

is fully seated under the retainer clip.

• Repeat on other side of carrier plate.

• Check all lines to be sure they are the

same length.

• Reconnect spark plug wire to spark
plug.

Trimmer
line

Carrier plate
opening

\

\

Retainer
clip

ENGINE
LUBRICATION

Use only high quality detergent oil rated

with API service classification SF, SG or

SH. Select the oil's SAE viscosity grade

according to your expected operating

temperature.

SAE VISCOSITY GRADES

NOTE: Although multi-viscosity oils
(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 if the
lawn mower 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

TO CHANGE ENGINE OIL

NOTE: Before tipping trimmer to drain
oil, drain fuel tank by running engine
until fuel tank is empty.

• Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.

• Remove engine oil cap; lay aside on a
clean surface.

• 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.

• Wipe off any spilled oil on trimmer and
on side of engine.

• Fill engine with oil. Fill only to the
"FULL" line on the dipstick. DO NOT

overfill.

• Replace engine oil cap.

• Reconnect spark plug wire to spark
plug.

Tu rn

Collar

Air filter
cover

Turn
counterclockwise to
tighten

clockwise
to remove

MUFFLER
Inspect and replace corroded muffler as

it could create a fire hazard and/or

damage.

AIR FILTER

Your engine will not run properly and
may be damaged by using a dirty air

filter.
Replace the air filter every year, more

often if you mow in very dusty, dirty
conditions. Do not wash air filter.

TO CHANGE AIR FILTER

• Remove the air filter by turning
clockwise to the stop and pull away

from collar.

• Remove filter from inside of cover.

• Clean the inside of the cover and the
collar to remove any dirt accumulation.

• Insert new filter into cover.

• Put air filter cover and filter into collar

aligning the tab with the slot.

• Push in on cover and turn counter-
clockwise to tighten.

SPARK PLUG
Change your spark plug each year to

make your engine start easier and run
better. Set spark plug gap at .030 inch.

CLEANING

IMPORTANT: For best performance,
keep trimmer free of built-up grass and
trash. Clean the underside of your

trimmer after each use.

&CAUTION: 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

electrical 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.

Knob Engine

cover

Starter

rope

• Unscrew knob on top of cover.

• Lift cover up and away from engine.

• Clean cover and cover screen thor-
oughly.

• Clean top of engine and air intake
screen.

• Replace engine cover and tighten
knob securely. Be sure the front tabs
engine cover are located in the slots

engine housing.

Threaded

Engine
cover

screen

Air intake screen

_1,CAUTION: Before performing any
service and adjustments:

• Stop engine.

• Make sure the rotating lines and all
moving parts have completely stopped.

• Disconnect spark plug wire from spark
plug and place where it cannot come in
contact with plug.

TRIMMER

TO REMOVE/REPLACE TRIMMER HEAD

DRIVE BELT

• Remove screw at front ofchassis cover.

• Lift cover up and away from trimmer.

• Turn trimmer on its side with carburetor and

fuel cap up.

• Remove belt from engine pulley on
crankshaft.

• Remove belt from trimmer head pulley.

• Remove idler assembly from chassis
and remove belt and idler from trimmer.

Housing
slots

• Remove belt from idler assembly by
removing bottom belt keeper and idler
pulleys.

• Assemble new belt, idler pulleys and
bottom belt keeper to idler bracket.

Tighten pulley bolts securely.

• Be sure belt is inside top belt keeper on
idler assembly.

• Position belt and idler assembly in
trimmer and assemble idler to chassis.

Tighten securely.

• Install belt around trimmer head pulley
and engine pulley.

• Replace chassis cover and tighten screw
securely.

• Always use Craftsman replacement parts
to assure proper fit and long life.

12

Chassis

/Screw

Chassis
cover

Engine Idler
pulley Spacer bracket

Nut

V-idler

Belt

( .

i

Top belt
keeper "--.

Idler

Flatidler

Bottom belt
keeper

Flat idler

Trimmer
head pulley

ENGINE SPEED

Bolt

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. If your engine
does not operate properly due to sus-
pected carburetor problems, take your

unit to a Sears or other qualified service
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. If you think the
engine-governed high speed needs
adjusting, take your unit to a Sears or
other qualified service center, which has
proper equipment and experience to

make any necessary adjustments.

13

Immediately prepare your trimmer for storage
at the end of the season or if the unit will not

be used fer 30 days or more.

TRIMMER

When trimmer is to be stored for a period of
time, clean it thoroughly, remove all dirt,

grease, leaves, etc. Store in a clean, dry area.

• Clean entire trimmer (See "CLEANING" in
the Maintenance section of this manual).

• Lubricate as shown in the Maintenance

section of this manual.

• Be sure that all nuts, bolts, screws, and pins

are securely fastened. Inspect moving
parts for damage, breakage and wear.

Replace if necessary.

• Touch up all rusted or chipped paint
surfaces; sand lightly before painting.

HANDLE
You can fold your trimmer handle for storage.

• Loosen handle knobs enough to allow
upper handle to be folded forward.

IMPORTANT: When folding the handle for

storage or transportation, be sure to fold the

handle as shown or you may damage the
control cables.

Upper
handle

Handle knob

ENGINE

FUEL SYSTEM
IMPORTANT: Itis importantto prevent gum

deposits from forming in essential fuel system
parts such as carburetor, fuel filter, fuel hose

or tank during storage. Also, experience
indicates that alcohol blended fuels ( called
gasohol or using ethanol or methanol) can

attract moisture which leads to separation and
formation of acids during storage. Acidic gas
can damage the fuel system of an engine

while in storage.

• Drain the fuel tank.

• Start the engine and let it run untilthe fuel
lines and carburetor are empty.

• Never use engine or carburetor cleaner
products in the fuel tank or permanent

damage may occur.

• Use fresh fuel next season.

NOTE: Fuel stabilizer is an acceptable

alternative in minimizing the formation of fuel
gum deposits during storage. Add stabilizer
to gasoline in fuel tank or storage container.
Always fellow the mix ratio found on stabilizer
container. Run engine at least 10 minutes
after adding stabilizf_r to allow the stabilizer to

reach the carburetor. Do not drain the gas
tank and carburetor if using fuel stabilizer.

ENGINE OIL

Drain oil (with engine warm) and replace with

clean engine oil. (See "ENGINE" in the

Maintenance section of this manual).
CYLINDER

• Remove spark plug.

• Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.

• Pull starter handle slowly a few times to
distribute oil.

* Replace with new spark plug.
OTHER

• Do not store gasoline from one season to
another.

• Replace your gasoline can if your can
starts to rust. Rust and/or dirt in your
gasoline will cause problems.

• If possible, store your unit indoors and
cover itto give protection from dust and dirt.

• Cover your unit with a suitable protective
cover that does not retain moisture. Do

not use plastic. Plastic cannot breathe

which allows condensation to form and will

cause your unit to rust.

IMPORTANT: Never cover trimmer while
engine and exhaust areas are still warm.

ACAUTION: 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
storing in any enclosure.

14

TROUBLESHOOTING CHART

PROBLEM CAUSE

CORRECTION

Does not start 1. Dirty air filter.

2. Out of fuel.

3. Stale fuel.

4. Water in fuel.

.

Spark .plug wire is
disconnected.

6.

Bad spark plug.

7.

Throttle control lever not

in correct position
(if equipped).

Loss of power 1.

Dirty air filter.

2.

Buildup of grass, leaves,
and trash under trimmer.

3

Too much oil in engine.

4.

Walking speed too fast.

Excessive 1.
Vibration 2.

Lines uneven or broken. 1. Check trimmer lines.
Loose nuts or bolts. 2. Check all hardware,

3.

Damaged tnmmer head. 3. Check/repair trimmer head.

1. Clean/replace air filter.

2. Fill fuel tank.

3. Drain tank and refill with
fresh 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 a_r filter.

2. Clean underside of trimmer

and trimmer head.

3. Check oil level.

4. Trim at slower walking
speed.

including engine bolts.

Starter rope hard 1.
to pull

Loss of head 1.
drive

Poor trimming 1.
performance

2.

Trimmer head 1.
does not

retain line 2.

3.

Bent engine crankshaft. 1. Contact a Sears or other

qualified service center.

Belt not driving. 1. Put belt on pulleys or

replace belt if broken.

Trimmer line length is
too short.

1. If line is worn or broken to
half original length,

replace line.

Throttle control lever not

in correct position

2. Move throttle lever to FAST

position.

(if equipped).
Trimmer line not

properly installed.

Broken line retainer clip.

1. Follow instructions in
Maintenance section.

2. Replace string carrier plate
assembly.

Incorrect size of

trimmer line.

3. Use .130 diameter
trimmer line.

15

CRAFTSMAN WEED TRIMMER-- MODEL NO. 917.773410

6

29

30

19

5

28 18

\

21.

20-

1

12

27

8

\

22

2

30

CRAFTSMAN WEED TR IMM ER- - MODEL NO. 917.773410

KEY PART

NO. NO. DESCRIPTION

Engine Model No. 143.004008

2 150406

3 169791

4 STD502502
5 174317
6 174274

7 174030
8 169821X479
9 150078

10 169797X479
11 131959
12 136376
16 153638

17 STD541025
18 66426
19 171449
20 174038
21 158755
22 169787

23 150078
24 169789
25 87143

26 169795
27 83923
28 174037
29 174034
30 174032

31 172221

-- 169803

-- 169804

(See Breakdown)
Engine Bolt 3/8-16
Engine Pulley (Includes setscrew)

Setscrew, Pulley
Engine Cover w/screen
Engine Cover Knob
Engine Cover Stud

Lower Handle
Screw Hx Wshd 5/16-18 x .75

Upper Handle
HandleBolt

Handle Knob
RopeGuide

Locknut 1/4 x 20
WireTire

Control Bar
Throttle Control

Hex Washer Screw
Axle Shaft
Screw hex Wshd 5/16-18 x .75

Axle Spacer
Wave Was her
Wheel 10 x 1.75

Hex Flange Locknut 3/8-16
Drive Control

Decal- Warning
Decal - Engine Cover

Bracket - Axle Support
Safety Goggles (Not Shown)

Owner's Manual

Available accessories

7"133623
7133000
7"179996
7"185642

not included with trimmer:

Gas Can (2.5 gal.)
SAE 30W Oil (20 oz.)

Trimmer Line (Pack of 24 strings, .130 dia.)
Trimmer Line Bulk Pack( 150 Feet, .130 dia.)

_31

CRAFTSMAN WEED TRIMMER-- MODEL NO. 917.773410

1

\

14

i

43

4 17----4_

18_ _,

I1

23

24

5

-- 26

9

0

--28

m29

o--31

I

19 17

32

CRAFTSMAN WEED TRIMMER- - MODEL NO. 917.773410

KEY PART
NO. NO. DESCRIPTION

1 174024X459 Chassis Assembly

2 174040 Line .130 Dia x 16.75
3 174591 Screw 5/16-18 x 1
4 169790 Belt V

5 172145X004 Idler Bracket
6 166042 Idler Pulley V-Groove

7 173716 Hex Bolt 3/8-16 x 1.25
8 751592 Hex Locknut 3/8-16

9 166043 Idler Pulley-Flat

10 160829 Shoulder Bolt
11 155552 Locknu! 5/16-18

12 173717 Spacer
13 142748 Shoulder Bolt

14 145212 Flange Locknut
15 173811 Return Spring

16 170552 Debris Shield
17 57808 Screw 1/4-20 x 1/2

18 85768 Screw #10-24 x 3/4

19 169800 Skirt

20 169764 Chassis Cover - Top
21 149746 Screw #10-24 x 1-3/4
22 STD541137 Nut 3/8-24UNF

23 STD551137 Lockwasher 3/8
24 STD551037 Flatwasher 3/8

25 169792 Pulley - Driven
26 172551 Spacer- Pulley
27 174549 Beanng

28 172603 Jackshaft
29 169766X459 Cover, Bottom

30 174543 Spindle Hsg. Asm. (* Includes Upper Bearing Key No. 27)

31 174581 Retaining Ring 17mm External
34 173531 Carrier Plate Assembly (Fixed)

35 172635 Spacer
36 172516 Cover, Bearing

37 174580 Retaining Ring 40mm Internal
38 172523 Mow Ball

39 172636 Bolt, Mow Ball
40 173619 Head Assembly Complete (Includes Key Nos. 22-39)

41 174029 Spacer
42 751153 Locknut Flanged 5/16-18

43 174036 Decal - Instruction
45 174596 Bottom Belt Keeper

33

CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008

261 287 /1_ 370 A

90O

I

400

135

130

120

416 119

1_ 182

212

_10 262f_

126

101

125

,285

|'89

34

CRAFTSMAN 4-CYCLE ENGINE

MODEL NO. 143.004008

KEY PART
NO. NO. DESCRIPTION

KEY PART
NO. NO.

1 • 37266 Cylinder (Incl. 2,20 & 150) 130 6021A

2 26727 Dowel Pin 135 35395
6 33734 Breather Element 150 31672
7 36557 BreatherAss'y.(Incl. 6& 12A) 151 31673

2 36775 Breather Tube 151A40017

12A 36558 Breather Cover & Tube 169 36783

(Incl. 12B) 172 36784
12B 36694 Breather Tube Elbow 174 30200
14 28277 Washer 178 29752

15 30589 Governor Rod (Incl. 14) 179 30593
16 34839A Governor Lever 182 6201
17 31335 Governor Lever Clamp 184 26756

18 651018 Screw, Torx T-15,

8-32 x 19/64" 185 36785
19 37453 Extension Spring 186 36201

20 32600 Oil Seal 200 37134
30 36797 Crankshaft 206 610973
40 40004 Piston, Pin & Ring Set (Std.) 207 36200B

40005 Piston, Pin & Ring Set 209 30200

(.010" OS) 223 650451

41 36070 Piston & Pin Ass'y. (Std.) 224 36786

(Incl. 43) 238 650932

36071 Piston & Pin Ass'y. (.010" OS) 239 34338

(Incl. 43) 241 36919

42 40006 Ring Set (Std.) 245 36905

40007 Ring Set (.010" OS) 250 37122

43 20381 Piston Pin Retaining Ring 260 37213
45 36777 Connecting Rod Ass'y. 261 30200

(Incl. 46) 262 650831

46 32610A Connecting Rod Bolt 275 36790A
48 27241 Valve Lifter 277 650988
50 37460 Camshaft (Exhaust MCR) 285 35000A

(Inc. ref 104) 287 650926

52 29914 Oil Pump Ass'y. 290 34357
69 37130 Mounting Flange Gasket 292 26460
70 34311E Mounting Flange 300 35586

(IncL 72 thru 83,306) 301 36246

72 36083 Oil Drain Plug 305 35577
75 27897 Oil Seal 306 36996
80 30574A Governor Shaft 307 35499

81 30590A Washer 309 650562
82 30591 Governor GearAss'y. (Incl. 81) 310 35578
83 30588A Governor Spool 313 34080

86 650488 Screw, 1/4-20 x 1-1/4" 370C37318
89 610961 Flywheel Key 380 640262
90 611213 Flywheel 390 590739
92 650815 Belleville Washer 400 36792B

93 650816 Flywheel Nut

100 34443B Solid State Ignition 416 36085
101 610118 Spark Plug Cover
103 651007 Screw, TorxT-15, 417 650821

10-24 x 15/16" 900

104 37480 Cam Bushing
110 36230 Ground Wire

119 36787 Cylinder Head Gasket
120 36825 Cylinder Head

125 37288 Exhaust Varve (Std.)

(Incl. 151)

126 37289 Intake Valve (Std.) (Incl. 151i

NOTE: This engine could have been built with
590702 starter

NOTE: All component dimensions given in U.S.
inches 1 inch = 25.4 mm

DESCRIPTION

Screw, 5/16-18 x 1-1/2"
Resistor Spark Plug (RJ19LM)

Valve Spring
Valve Spring Cap
Intake Valve Seal
Valve Cover Gasket

Valve Cover
Screw, 10-24 x 9/16"
Nut & Lock Washer, 1/4-28

Retainer Clip
Screw, 1/4-28 x 7/8"

Carburetor To Intake Pipe
Gasket

Intake Pipe
Governor Link

Control Bracket (Incl. 206)

Terminal
Throttle Link

Screw, 10-24 x 9/16"
Screw, 1/4-20 x 1"
Intake Pipe Gasket

Screw, 10-32 x 49/64"
Air Cleaner Gasket
Air Cleaner Collar

Air Cleaner Filter
Air Cleaner Cover

Blower Housing
Screw, 10-24 x 9/16"

Screw, 1/4-20 x 1/2"
Muffler

Screw, 1/4-20 x 2-9/32"
Starter Cup

Screw, 8-32 x 21/64"
Fuel Line

Fuel Line Clamp
Fuel Tank (Incl. 292 & 301)
Fuel Cap

Oil Fill Tube
"O"-Ring

"O"-Ring
Screw, 10-32 x 3/8"

Dipstick
Spacer
Primer Decal (3X)
Carburetor (Incl. 184)

Rewind Starter
Gasket Set

(Incl. Items Marked *)
Spark Arrestor Kit

(Incl. 417)(Optional)
Screw, 10-32 x 1/2" (Optional)

REPLACEMENT SHORT
BLOCK 750812C

RPM High 3450 to 3750
RPM Low 2000 to 2300

35

CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008

_16

36A

J3--37

(_m37

27

36

CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008

KEY PART

NO. NO.

DESCRIPTION

----640262
1 631615

2 631767
4 631184 *

5 631183 *
6 640070
7 650506 *

16 631807
17 651025

18 630766
20 640018
20A 640200
25 631867

27 631024 *
28 632019
29 631028 *
30 631021 *

31 631022

35 640259
36 640080

36A 632766
37 632547 *
40 640175
44 27110A *
47 630748 *

48 631027 *
60 632760B

Carburetor (Incl. 184 of Engine Parts List)

Throttle Shaft & Lever Assembly
Throttle Return Spring

Dust Seal Washer
Dust Seal (Throttle)

Throttle Shutter

Shutter Screw
Fuel Fitting

Throttle Crack Screw/Idle Speed Screw

Tension Spring
Idle Restrictor Screw

Idle Restrictor Scr'we Cap (Black)
Float Bowl
Float Shaft

Float
Float Bowl "O" Ring

Inlet Needle, Seat, & Clip (Incl. 31)
Spring Clip
Primer Bulb/Retainer Ring

Main Nozzle Tube
Carburetor Tube

"O" Ring, Main Nozzle Tube
High Speed Bowl Nut

Bowl Nut Washer
Welch Plug, Idle Mixture Well

Welch Plug, Atmospheric Vent
Repair kit (Incl. Items Marked *)

37

CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008

12

13

O'--'_4

KEY PART
NO. NO.

----590702
1 590599A

2 590600
3 590696
4 590601
5 590697
6 590698

7 590699
8 590700

11 590703
12 590535
13 590701

Ore2

DESCRIPTION

Recoil Starter
Spring Pin (Incl. 4)

Washer

Retainer

Washer

Brake Spring
Starter Dog

Dog Spring
Pulley & Rewind Spring Ass'y.

Starter Housing Ass'y. (40
degree grommet)

Starter Rope ( 98" X 9/54"
dia.)

Starter Handle

38

CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008

--14

KEY

PART

NO.

NO.

----590739
3

590740

6

590616

7

590617

8

590618A

11

590638

12

590535

13

590701

14

590760

DESCRIPTION

Rewind Starter
Retainer

Starter Dog
Dog Spring
Pulley & Rewind Spring Ass'y

Starter Housing Ass'y (40
degree grommet)

Starter Rope (Length 98" x 9/
64" dia.)

Starter Handle
Spring Clip

39

Get it fixed, at your home or ours!

For repair of major brand appliances in your own home...

no matter who made it, no matter who sold it1

1-800-4-MY-HOME sM Anytime, day or n,ght

(1-800-469-4663)

www.sears.com

To brmg in products such as vacuums,

lawn equipment and electronics for repair, call for

the Iocahon of your nearest Sears Parts & Repair Center.

1-800-488-1222 Anyttme, day or n,ght

www.sears.com

For the replacement parts, accessories and owner's manuals

that you need to do-it-yourself, call Sears PartsDirectSM!

1-800-366-PART 6am- 11pm CST,

(1-800-366-7278) 7 days a week

www.sears.com/partsdirect

To purchase or inqutre about a Sears Service Agreement:

1-800-827-6655

7 a.m. - 5 p.m. CST, Mon - Sat

Para ped_rservtclo de reparac_6n a domJclho,

y para ordenar plezas con entrega a domlclho

1-888-SU-HOGAR s_

(1-888-784-6427)

© Sears, Roebuck and Co

® Registered Trademark / T,_Trademark of Sears, Roebuck and Co
® Marca Reglstrada / rM Marca de F_bnca de Sears, Roebuck and Co

Au Canada pour service en fran£_a_s

1"877-LE-FOYE Rs,

(1-877-533-6937)

169804 Rev.3 04.19.00 VB Printed in U.S.A.