Craftsman 917.77341 User Manual

Owner’s Manual

CRRFTSMRN

4.0 HORSEPOWER
20INCH CUT

WHEELED
WEEDTRIMMER

Mode! No.

917.773410

Safety
Assembly
Operation

Maintenance

Español

Repair Parts

^CAUTION:

Read and follow all
Safety Rules and Instructions
before operating this equipment.

Sears, Roebuck and Co., Hoffman Estates, IL60179

Visit our Craftsman website: www.sears.com/craftsman

TABLE OF CONTENTS

Warranty
Safety Rules
Assembly
Operation

Maintenance
Maintenance

Schedule

2 Product Specifications i
2 Service and Adjustments 1:

5 Storage 1

6 Troubleshooting 11

9 Repair Parts 3(

9 Parts Ordering Back Cove

WARRANTY

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).

SAFETY RULES

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.

A

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.

A\

SAFETY RULES (CONT.)

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.

DO NOT:

• 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 for 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.

A

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 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 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.

Atook for this symbol to point out impor

tant safety precautions. It means CAU
TION!!! BECOME AWARE!!! YOUR
SAFETY !S !NVOLVED.

AcaUTION: 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.

AwARNING: The engine exhaust from

this product contains chemicals known to
the State of California to cause cancer,
birth defects, or other reproductive harm.

ASSEMBLY

Read these instructions and this manual in its
entirety before you attempt to assemble or
operate your new trimmer.
IMPORTANT: This trimmer 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.

HOWTO 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

Goggles

20 oz.

Bottle of oil

Trimmer Lines

(2) Sets

(0.130 diameter

X16.75 inches iong)

Upper handle

Lift up

Handle knob

Lower handle

OPERATION

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 adjustments. Save this manual for future reference.

These symbols may appear on your trimmer or in literature supplied with the product Learn and understarKi
their meaning. f A WARNING

Avno KMOUS mUlT OR DEATH

READ AND FOLLOW OWNER'S

manual.

UAYSIGA El MANUAL DEL
PROPIETARIQ.

00 NOTOPfHATi WHEN CHILDRfN
OROTHERSAftEAROUNO. REMOVE
OBJECTS TNAT COULD BF THROWN
BYTHECUrrrNGUHES.
DO NOT SERVICE OR ADJUST CUTTINC
HEAD OR OTHER MOVING PARTS
UNUSS ENCINT IS STOPPED AND
SPARK PLUG WIRE l£ DISCONNEnTD.
WEAR SAFETY APPHOVn) EYE
PROncnOH WHEN OPERATING.

¡SV GO ACROSS SLOPES NOT OP AND

iÇfl MWM

» KEEP SAFETY DEVICES, SUCH AS GUARDS AMO

DEFLECTORS. IN PLACE AND OPOIADNG.

> LOOK DOWN AND BEHIND BEFORE AND WHILE

MOVING BACKWARDS

(i 'Sr

Trimmer head control bar

Throttle control

Starter handle

Handle knob

Engine oil
cap w/
dipstick

Trimmer head control lever

Gasoline cap

Engine
cover

Primer

Chassis
cover

Trimmer 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.

WEAR YOUR

^ SAFETmASSES J

FORESIGHT IS BEHER

THAN NO SIGHT

The operation of any trimmer can result in

oreign objects thrown into the eyes,
/i/hich can result in severe eye damage.
Always wear safety glasses or eye shields
while operating your trimmer or perform
ing any adjustments or repairs. We

recommend a wide vision safety mask
over spectacles or standard safety
giasses. The safety goggles provided with
your trimmer may be worn over spec

tacles.

HOW TO USE YOUR TRIMMER

ENGINE SPEED

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.

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 will stop when

the control bar is released.

Drive
control
lever

control bar

To engage
trimmer head

Trimmer head
disengaged

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 20oz. of oil. For type and
grade of oil to use, see “ENGINE’ in
Maintenance section of this manual.

• Pour oil slowly. Do not over fill.

• 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.

^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.

A 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.

TO START ENGINE

• To start a cold engine, push primer three
(3) times before trying to start. Use a firm

push. This step is not usually necessary
when starting an engine which has
already run for a few minutes.

• Move throttle control lever to fast position.

• Hold upper handle firmly and pull starter
handle quickly. Do not allow starter rope 1

snap back.

TO STOP ENGINE

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

NOTE: In cooler weather it may be

necessary to repeat priming steps. In
warmer weather overpriming may 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.

Throttle
control

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 clear
and clean of grass clippings and chaff.
This will help engine air flow and extent
engine life. See TO REMOVE 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 of trimmer when
trimming along fences, walls, flowerbed
and other such objects.

• If trimmer lines become too short, it will
take longer to complete the job. If
trimmer lines are worn to less than half

their original length, they should be

replaced. See TO REPLACE TRIMMER
LINE in the Maintenance section of this

manual.

• Trimmer head contact with concrete,
asphalt or other hard surfaces may
cause premature wear of the ball on
bottom of trimmer head.

MAINTENANCE

Check for Loose Fasteners
Clean Trimmer - ✓

Clean Under Engine Cover

Check drive belt/pulleys
Check/Replace Trimmer Lines

Check Engine Oil Level
Change Engine Olí

Clean Air Filter

Inspect Muffler

Clean or Replace Spark Plug

Replace Air Filter Paper Cartridge

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 trimmer lines when they have worn to half their original length.

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

✓

✓ 2

✓

✓ a

✓

^1,2

✓ 2

✓

✓

i/i

IMPORTANT: Do not oil or grease plastic
wheel bearings. \^scous 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 dry, powdered
graphite type lubricant sparingly.

manual.
Some adjustments will need to be made
periodically to properly maintain your unit.
All adjustments in the Service and

PRODUCT SPECIFICATIONS

Serial No. _______________________________

Date of Purchase: .

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

Gasoline Type:
Gasoline Capacity:
Oil Type;
(APl-SF/SG/SH)
Oil Capacity:
Spark Plug :

(Gap: .030”)

Valve Clearance:

this manual.

BEFORE EACH USE

• Check engine oil level.

Trimmer Line Dia.: .130 inch
Trimmer Line Length: 16.75 inches

• Check for loose fasteners.

• Clean under engine cover.

LUBRICATION

To prolong the useful life of your trimmer,

change engine oil as recommended in

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.

this section of Owner’s Manual.

✓
✓

✓

Unleaded Regular

1.25 Quarts

SAE 30 (Above 32= F)
SAE 5VJ-30 (Below 32= F)
20 Ozs.
Champion J19LM

or RJ19LM

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

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 16-3/4

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 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
SFI. Select the oil's SAE viscosity grade
according to your expected operating
temperature.

SAE VISCOSITY GRADES

I I

I

C .30°

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OfL CHANGE

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.

•20*

30" 32" 40*

20* 30°

10

TO CHANGE ENGINE OIL
NOTE: Before tipping trimmer to drain
oil, drain fuel lank 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.

Turn

Collar

Slot

Air filter

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.

Container

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.

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
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.

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 of
engine cover are located in the slots in

engine housing.

SERVICE AND ADJUSTMENTS

A 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 of chassis 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.

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

Top belt
keeper

Flat idler

Bottom belt
keeper

Flat idler

Trimmer
head pulley

Bolt

ENGINE SPEED

Your engine speed has been factory set.

Do not attempt to increase engine speed
or it may result in persona! 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

STORAGE

Immediately prepare your trimmer for storage
at the end of the season or if the unit will not
be used for 30 days or more.

TRIMMER

When trimmer is to be stored for a period of

time, clean it thoroughly, remove alt 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

FUELSYSTEM
IMPORTANT: It is important to 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
gasoho! 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 until the 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 stabili2er 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 follow the mix ratio found on stabilizer
container. Run engine at least 10 minutes
after adding stabilizer 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 spar1< 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 it to 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.

^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
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.

5. Sparkplug wire is
disconnected.

6. Bad spark plug.

7. Throttle control lever not
in correct position

(if equipped).

Loss of power

Excessive
Vibration

1. Dirty air filter.

2. Buildup of 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. Clean/replace air filter.

2. Fill fuel tank.

3. Drain tank and refill with
fresh clean fuel.

4. Dram 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 trimmer head.

Starter rope hard
to pull

Loss of head

drive

Poor trimming
performance

Trimmer head

does not
retain line

1. Bent engine crankshaft. 1. Contact a Sears or other
qualified service center.

1. Belt not driving.

1. Trimmer line length is
too short.

2. Throttle control lever not
in correct position

(if equipped).

1. Trimmer line not
properly installed.

2. Broken line retainer clip.

3. Incorrect size of
trimmer line.

1. Put belt on pulleys or
replace belt if broken.

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

2. Move throttle lever to FAST
position.

1. Follow instructions in
Maintenance section.

2. Replace string carrier plate
assembly.

3. Use .130 diameter
trimmer line.

15

REPAIR PARTS

CRAFTSMAN WEED TRIMMER- - MODEL NO. 917.773410

30

CRAFTSMAN WEED TRIMMER- - MODEL NO. 917.773410

KEY

10
11
12
16
17
18

19
20
21
22
23
24
25
26
27
28
29 174034

30
31

- -

- -

PART

NO.

NO.

1

2

150406

3

169791

4

STD502502
5 174317
6 174274
7

174030

8

169821X479

9

150078
169797X479
131959
136376
153638

STD541025
66426

171449
174038
158755

169787
150078
169789
57143
169795
83923
174037

174032
172221
169803
169804

DESCRIPTION

Engine Model No. 143.004008
(See Breakdown)
Engine Bolt 3/8-16
Engine Pulley (Includes setscrew)
Setscrew, Pulley
Engine Cover w/screen

Engine Cover Knob
Engine Cover Stud
LowerHandle
Screw Hx Wshd 5/16-18 x .75
Upper Handle
Handle Bolt
Handle Knob
Rope Guide
Locknut 1/4 X 20

Wire Tire
Control Bar
Throttle Control
Hex Washer Screw
Axle Shaft
Screw hex Wshd 5/16-18 x .75
Axle Spacer
Wave Washer
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 not included with trimmer:

7133623 Gas Can (2.5 gal.)
7133000 SAE 30W Oil (20 oz.)
7179996 Trimmer Line (Pack of 24 strings, .130 dia.)
7185642 Trimmer Line Bulk Pack( 150 Feet, .130 dia.'

'31

CRAFTSMAN WEED TRIMMER- - MODEL NO. 917.773410

32

CRAFTSMAN WEED TRIMMER- - MODEL NO. 917.773410

KEY
NO.

10 160829
11
12 173717
13 142748
14
15
16

17
18 85768 Screw #10-24 X 3/4
19 169800

20 169764
21
22 STD541137
23 STD551137
24
25
26 172551 Spacer - Pulley
27
28 172603
29 169766X459 Cover, Bottom
30 174543
31 174581
34
35 172635 Spacer
36
37
38 172523 Mow Ball
39 172636 Bolt, Mow Ball
40 173619
41
42
43 174036
45 174596

PART

NO. DESCRIPTION

1

174024X459

2

174040 Line .130 Dia x 16.75

3 174591

4

169790 BeltV
5 172145X004
6 166042 Idler Pulley V-Groove
7 173716
8 751592
9 166043

155552 Locknut 5/16-18

145212
173811 Return Spring
170552

57808

149746 Screw #10-24 X 1-3/4

STD551037
169792

174549 Bearing

173531
172516 Cover, Bearing

174580 Retaining Ring 40mm internal

174029 Spacer

751153

Chassis Assembly
Screw 5/16-18 X 1

Idler Bracket
Hex Bolt 3/8-16x1.25

Hex Locknut 3/8-16
Idler Pulley-Flat

Shoulder Bolt
Spacer

Shoulder Bolt
Flange Locknut

Debris Shield
Screw 1/4-20 X 1/2

Skirt
Chassis Cover-Top

Nut3/8-24UNF
Lockwasher 3/8
Flatwasher3/8
Pulley - Driven

Jackshaft
Spindle Hsg, Asm. (* Includes Upper Bearing Key No. 27)

Retaining Ring 17mm External
Carrier Plate Assembly (Fixed)

Head Assembly Complete (Includes Key Nos. 22-39)
Locknut Flanged 5/16-18

Decal - Instruction
Bottom Belt Keeper

33

CRAFTSMAN 4-CYCLE ENGINE

MODEL NO. 143.004008

250

34

CRAFTSMAN 4-CYCLE ENGINE

MODEL NO. 143.004008

KEY PART
NO.

NO. DESCRIPTION

1 .

37266 Cylinder (Incl. 2,20 & 150)

2

26727

Dowel Pin
6 33734 Breather Element
7

36557

2

36775 Breather Tube

12A

36558 Breather Cover & Tube

Breather Assy (Incl. 6 & 12A)

(Incl. 12B)

12B

36694

14

28277 Washer

Breather Tube Elbow

15 30589 Governor Rod (Incl. 14)
16 34839A Governor Lever
17

31335 Governor Lever Clamp

18

651018 Screw, Torx T-15,

8-32 X 19/64"

19

37453 Extension Spring

20

32600 Oil Seal

30

36797

40

40004 Piston, Pin & Ring Set (Std.)

Crankshaft

40005 Piston, Pin & Ring Set

(.010“ OS)

41

36070 Piston & Pin Ass’y. (Std.)

(Incl. 43}

36071

Piston & Pin Ass’y. (.010" OS)

(Incl. 43}

42

40006 Ring Set (Std.)

43
45

40007
20381
36777

Ring Set (.010" OS)

Piston Pin Retaining Ring

Connecting Rod Ass'y.

(Incl. 46)

46 3261OA
48 27241
50

37460

Connecting Rod Bolt

Valve Lifter
Camshaft (Exhaust MCR)

(Inc. ref 104)
52
69
70

29914
37130 *
34311E

Oil Pump Ass’y.

Mounting Flange Gasket
Mounting Flange
(Incl. 72 thru 83,306)

72

36083
75 27897
80

30574A
81 30590A
82

30591
83

30588A

86

650488

89

610961

90

611213

92

650815

93

650816
100

34443B
101

610118
103 651007

Oil Drain Plug
Oil Seal
Governor Shaft
Washer
Governor Gear Ass’y. (Incl. 81)
Governor Spool
Screw, 1/4-20 X 1-1/4"
Flywheel Key
Flywheel
Belleville Washer
Flywheel Nut

Solid State Ignition
Spark Plug Cover
Screw, Torx T-15,

10-24 X 15/16"

104

37480
1 10 36230
119 36787 *
120

36825
125

37288

Cam Bushing
Ground Wire
Cylinder Head Gasket
Cylinder Head
Exhaust Valve (Std.)
(incl. 151) „

126

37289

Intake Valve (Std.) (Incl. 151)

KEY PART
NO.

NO.

130 6021A
135

35395
150 31672
151 31673
151A40017
169 36783 *
172 36784
174

30200
178 29752
179 30593
182 6201
184

26756 *

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

185 36785

Intake Pipe

186 36201 Governor Link

37134

200
206 610973
207

36200B
209 30200
223 650451
224

36786 *
238 650932
239 34338 *
241

36919 Air Cleaner Collar
245 36905
250 37122
260 37213
261 30200
262

650831

367Э0А

275
277 650988

35000A

285
287

650926 Screw, 8-32 X 21/64"
290 34357
292

26460 Fuel Line Clamp
300

35586 Fuel Tank (Incl. 292 & 301)

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 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

Fuel Line

301 36246 Fuel Cap

35577

305

Oil Fill Tube

306 36996 * “О’’-Ring
307

35499 “0’’-Ring
309 650562 Screw, 10-32 X 3/8"
310

35578
313 34080
370C37318
380

640262

Dipstick
Spacer
Primer Decal (3X)

Carburetor (Incl. 184)
390 590739 Rewind Starter
400 36792B

Gasket Set

(Incl. Items Marked *)

416 36085

Spark Arrestor Kit

(Incl. 417)(Optional)
417 650821

—

900

_

___

_

_

________

_

Screw. 10-32 X 1/2" (Optional)
REPLACEMENT SHORT
BLOCK 750812C
RPM High 3450 to 3750
RPM Low 2000 to 2300

NOTE: This engine could have been built with
590702 starter

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

35

CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008

36

CRAFTSMAN 4-CYCLE ENGINE

PART

KEY

NO. NO.

_ _

640262

1 631615
2 631767
4 631184
5 631183
6 640070
7 650506

631807

16
17 651025
18 630766

640018

20
20A 640200

631867

25
27 631024

632019

28

631028

29
30 631021
31 631022

35 640259
36 640080
36A 632766
37 632547
40

640175

44

27110A
47 630748
48 631027
60 632760B

DESCRIPTION

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/ldle Speed Screw
Tension Spring

Idle Restrictor Screw

Idle Restrictor Scrwe Cap (Black)

Float Bowl

-*

Float Shaft

Float

Float Bowl "O” Ring

it

Inlet Needle, Seat, & Clip (Incl. 31)

Spring Clip

Primer Buib/Retainer Ring

Main Nozzle Tube
Carburetor Tube

*

"0” 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 *)

MODEL NO. 143.004008

37

CRAFTSMAN 4-CYCLÈ ENGINE MODEL NO. 143.004008

KEY

PART

NO.

NO.

____

590702 Recoil Starter

1

590599A

2

590600

3

590696 Retainer

4

590601 Washer

5

590697 Brake Spring

6

590698

7

590699 Dog Spring

8

590700

11

590703

12

590535

13

590701

0—2

0

-

DESCRIPTION

Spring Pin (Ind. 4)

Washer

Starter Dog
Pulley & Rewind Spring Ass’y-

Starter Housing Ass’y. {40
degree grommet)
Starter Rope ( 98" X 9/è4"
día.)
Starter Handle

38

CRAFTSMAN 4-CYCLE ENGINE

MODEL NO. 143.004008

-u

KEY

PART

NO.

NO. DESCRIPTION

____

590739 Rewind Starter
3 590740
6 590616 Starter Dog
7

590617
8 590618A

1 1

590638

12 590535
13 590701

14 590760

Retainer
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 it'

1-800-4-MY-HOME Anytime, day or night

(1-800-469-4663)

www.sears.com

To bring in products such as vacuums,

lawn equipment and electronics for repair, call for

the location of your nearest Sears Parts & Repair Center.

1-800-488-1222 Anytime, day or night

www.sears.com

For the replacement parts, accessories and owner’s manuals

that you need to do-it-yourself, call Sears PartsDirect^'^l

1 -800-366-PART 6 a m - 11 p m CST,

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

www.sears.com/partsdirect

To purchase or inquire about a Sears Service Agreement:

1-800-827-6655

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

Рага pedir servicio de reparación a domicilio,

у para ordenar piezas con entrega a domicilio

1-888-SU-HOGAR^"

(1-888-784-6427)

HomeCentral

I Sears, Roebuck and Co

) Registered Trademark / Trademark of Sears, Roebuck and Co
> Marca Registrada / ™ Marca de Fábrica de Sears, Roebuck and Co

Au Canada pour service en français

1-877-LE-FOYER"“

(1-877-533-6937)

169804 Rev.3 04.19.00 VB

Printed in U.S.A.