Craftsman WEEDWACKER 358.797180 User manual

IMPORTANT MANUAL Do Not _hrow Away
operator's
nlanual
MODEL NO.
358.797180-26cc
(17" Cutting Path)
AWARNING:
Read the Operator's Manual
and Follow All Warnings
and Safety Instructions.
Failure To Do So Can Result
inSeriousInjury.
Always WearEye Protection During Operation
_'___RS /CRRFT.3;MflN,_
26cc GAS WEEDWACKER _
2Cycle Engine
• Assembly
•Operation
Fuel Mix 40:1
•Maintenance
• RepairParts
Sold by Sears, Roebuck and Co., Chicago, Ill. 60684 U.S.A.
i i i ,f ill i
530-067910-3-04/26/91 ©Sears, Roebuck and C0.,1990

2
ONE YEARLIMITEDWARRANTYONCRAFISMAN _WACKEI_ .__
ForOneYearfromdateofpurchase,whenthisWeedwacker_ismaintained,lubricated,andtunedupaccordingtotheoperating
and maintenanceinstractionsinthe operator'smanual,Scarswillrepairfreeofchargeanydefectinmateri_ or_r_ship. ....<=3
Thiswarrantyexcludesnylonline, sparkplug, andaircleaner; whichare expendablepareand become _m during norm_l _
use,
Ifthis Weodwacker_ isusedforcomnaercialorrentalpurposes;thiswarrantyappliesforonly30daysfromthedateofpurchas¢.
WAR_RANTYSERVICEISAVAILABLEBYCONTACTINGTHENEARF,.KrSEARSSERVICECENTER/DEPARTMENT _._
INTHE UNITEDSTATES.Thiswarrantyappliesonlywhilethis productis inuseinthe UnitedStates.
Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrightswhichvaryfromstatetostate. _
__y_ ROEBUCK AND CO. DEPT. D/731 SEARS TOWER CHICAGO, IL 60684
SEARS, CR-W,
TABLE OF CONTENTS
WARNINGS AND SAFETY INSTRUCTIONS .......... 3
KNOW YOUR TRIMMER .......................... 6
ASSEMBLY ...................................... 7
ACCESSORIES .................................. 10
ENGINE INFORMATION .......................... 11
A. Fueling Your Engine .......................... 11
B. Pre-Operation Checks ......................... 12
C. Starting Instructions .......................... 12
D. Operating Instructions ...... ................... 13
USING YOUR TRIMMER. ......................... 13
A. Trimmer Safety .............................. 14
B. Trimmer Line Advance ........................ 14
C. Cutting Methods ............................. 15
D. Line Replacement ............................ 16
GENERAL MAINTENANCE ....................... 17
A, Maintenance Safety ........................... 17
B. Air Filter ................................... 17
C. Starter Rope ................................. 18
D. Flexible Drive Shaft Lubrication ................. 19
E. Carburetor Adjustments ....................... 20
E Storage .................................... 22
G. Trouble Shooting Chart ....................... 22
REPAIR PAR'IS LIST ..............................23
INDEX ..........................................26
QUICK REFERENCE PAGE ........................27
SPECIFICATIONS
ENGINE TYPE:
DISPLACEMENT:
ENGINE RPM:
IGNITION:
CARBURE'K)R:
ENGINE "'OFF":
STARTER:
MUFFLER:
CLUTCH:
FUEL TANK:
SPARK PLUG:
SPARK PLUG GAP:
MODULE A!R GAP:
LUBRICATION:
CUq_"NG LINE:
2-Cycle, Air-Cooled
26cc
Operating- 7500
Idle -- 2800 - 3200
Solid State
Diaphragm All Positions with
adjustable fuel mixture jets
Positive Switch
Auto Rewind •
Temperature Limiting
(not spark arresting)
Centrifugal
17 ft. oz.
71-86555 (O-14)
.025"
.010"1.014"
Gasoline/Oil Mixture - 40:1
(S,ee ]Tueling Your Engine")
,080" Diameter Sears Laser
Line ®
SHAFT LENGTH: 48"
_ I_G_STE_D
NOTE: LASER LINE® IS TRADEMARK OF
WHITE CONSOLIDATED INDUSTRIES, INC.
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U,S.
PATENTS: 3,708,967; 3,826,068; 3,859,776; 4,035,912; 4,052,789; 4,054,992;
4.067,108; 4.104,797;4,114,269; 4,124,938;4,156,3_2:4.156,967"4,161,820;
4A67,812; 4,269,372; 4,286,675; DES.249,630; 4,107,901; 4,112.653; 4,136,446;
4,168,572; 4,183,138; 4,189,833; 4,211,004; 4,211,005: 4,236,311; 4.236,312;
4,290,200; 4,362,074: 4,366,622; 4.382,356; 4,45t,983; 4A83,069.
U.S, AND FOREIGN PATENTS FENDING.
IGNITION
STARTERROPEHANDLE
FOAMGRIP
THROTrLE TRIGGER
SERIAL NUMBER AND
)STARRING INSTRUCTIONS /
ASSIST HANDLE
SAFETYLABEL
DRI'VESHAFTHOUSING

j IIII I II I Ill I
WARNINGS AND
II Iltl iiiiiiiiiil[tt[t]ltJiii I tt
INSTRUCTIONS
iiii i
AWARNING -. THISPO_.8 TOOLCANBE@ANGEIIOU$!
This tool can cause serious injury orblindness to the operator and others. The warnings and safety instructions in this manual
must be followed to provide reasonable safety and efficiency in using this tool. The operator is responsible for following the
warnings and instructions inthis manual and on the tool. Read the entire Operator's Manual before assembling and using
this tool! Restrict the useofthis power tool to persons who read, understand, and follow the warnings and instructions
in this manual and on the tool.
ADANGER
NEVER USE BLADES WITH THIS TOOL.
-- THE BLADE CAN COME OFF AND
SERIOUSLY INJURE YOU AND OTHERS,
-- THIS TOOL IS DESIGNED FOR
LINE TRIMMER USE ONLY.
_ARNING
THE TRIMMER LINE CAN THROW OBJECTS
VIOLENTLY.
-- YOU CAN BE BLINDED OR INJURED.
-- WEAR EYE AND LEG PROTECTION.
60 FOOT
ZONE AWARNL_G
HAZARD ZONE FOR THROWN OBJECTS.
-- THE TRIMMER LINE CAN THROW
OBJECTS VIOLENTLY.
-- OTHERS CAN BE BLINDED OR
INJURED.
-- KEEP PEOPLE AND ANIMALS
30 FEET (10 METERS) AWAY.
OPERATOR'S
AWARNING ,
READ OPERATOR SMANUAL.
-- FOLLOW ALL _I_RNINGS AND
INSTRUCTIONS.
-- sFA/IL!_)I_I_;ITONjU_y CAN RESULT IN

4

i i i iiiiii i
A WARNINGS AND SAFETY INSTRUCTIONS co . d)
titt t t i i ttttttt
AOPERATOR SAFETY
1. Always wear a safety face shield or safety goggles. See
'_ccessories?'
2. Keephair, fingers, and aHother parts ofthebody a_. from
openings and movingparts. Alwayswear heavy,long pants,
boots, and gloves. Do not wear loose clothing, jewelry,
short pants, sandals, or go barefoot. Secure hair so it is
above shoulder length. Being fully covered will help pro-
tect you from pieces of toxic plants (such aspoison ivy)
thrown by the Trimmer Head, which could be more of a
hazard than touching the plant itself.
3. Do not operate thistoolwhen youare tired, ill, or under the
influence of alcohol, drugs, or medication.
4. Always use the assist handle. See "Assembly."
5. Wear hearing protection if you use this tool for more than
1V2hours per day.
6. Never startor run the engine inside a closed room orbuild-
ing. Breathing exhaust fumes can kill.
7. Keep handles free ofoil and fuel.
&CUTTING SAFETY
1. Inspect the area to be cut before each use. Remove objects
(rocks, broken glass, nails, wire, string,etc.) which can be
thrownor become entangled in the trimmer head.
2. Keep others including children, animals, bystanders, and
helpers outside the 60 foot (20 meter) Hazard Zone. Stop
the engine immediately if you are approached.
3. Always keep the engine on the right side of your body.
4. Hold the tool firmly with both hands.
5. Do not overreach or use from unstable surfaces such as
ladders, trees, steep slopes, rooftops, etc. Use extra care
when cleaning on stairways. Keep firm footing and balance
at all times.
6. Keep trimmer head below waist level.
7. Do not raisethe engine above yourwaist. The trirranerhead
can come dangerously close to your body.
8. Keep allparts ofyourbody awayfrom the trimmer head and
muffler when the engine is running.
9. Use only forjobs explained in this manual.
,a, TOOLSAFETY
1. Inspectentiretoolbeforeeachuse. P,eptacedamaged pa_s.
Check for fuet leaks andmake sure all fasteners are inplace
and securely fastened.
2. Replace trimmer head parts that are cracked, chippexl,
broken, or damaged inany other waybefore usingthe tool.
3. Use only .080" diameter Sears Laser Line._ Never use
wire, rope, string, etc.
4. Be sure the shield is properly attached.
5. Use only the specified trimmer head. See "Specifications"
Make sure the trimmer head is properly installed and
fastened. Refer to "Assembly."
6. Besure the trimmer head stopsturning when engine idles.
See "Carburetor Adjustments."
7. Make carburetor adjustments with the drive shaft housing
supported to prevent the trimmer linefrom contacting any
object. Hold the tool by hand; do not use the optional
shoulder strap for support.
8. Keep others away when making carburetor adjustments.
9. Use only accessories or attachments asrecommended for
this tool by Sears.
AFUEL SAFETY
1. Move at least 10feet (3 meters) awayfrom fueling site be-
fore starting engine.
2. Use a container approved for fuel.
3. Do not smoke or allow smoking near fuel or the tool or
while using the tool.
4. Wipe up all fuel spills before starting engine.
5. Stop engine before removing fuel cap. Allow the engine
to cool before refueling.
6. Before storing the tool, use up fuel left in the fuel lines
and carburetor by starting the engine and letting it run
until it stops.
7. Storetool and fuelinan area where fuelvapors cannot reach
sparks or open flames from water heaters, electric motors
or switches, furnaces, etc.
&MA/NTENANCE SAFETY
i. Maintain the tool according to recommended procedures.
Keep the trimmer line at the proper length.
2. Never starttheengine with theclutch shroud removed. The
clutch can fly apart and cause serious injury.
3. Disconnect the spark plug before performing maintenance
except for carburetor adjustments.
4. Make carburetor adjustments with the drive shaft housing
supported toprevent thetrimmer line from contacting any
object. Hold the tool by hand; do not use the optional
shoulder strap for support.
5. Keep others away when making carburetor adjustments.
6. Use only genuine replacement parts as recommended
by Sears.
4A TRANSPORTING AND STORAGE
1. Hand carry the toolwith the engine stopped and the muffler
away from your body.
2. Allow the engine to cool, run fuel out of the fue! sys-
tem, and secure the tool before transporting in a vehi-
cle or storing.
3. Before storing the tool, use up fuel left in the fuel lines
and carburetor by starting the engine and letting it van
until it stops.
4. Store tooland fuel inan area where fuelvapors cannot reach
sparks or open flames from water heaters, electric motors
or switches, furnaces, etc.
5. Store the tool so the line limiter cannot accidentally cause
injury. The tool can be hung by the drive shaft housing or
by the bracket below the engine.
6. Store tool out of reach of children.
If situations occur which are not covered inthismanual, use
care and good judgement. Contact your Sears Service
Center/Depa_ment if you need assistance.
SAFETY NOTICE
Exposure tovibrations through prolonged useofgasoline powered handtools could cause bloodvessel or nerve damage inthe fingers,
hands, and wrists of people prone to circulation disorders or abnormal swellings. Prolonged use in cold weather has been linked
toblood vessel damage in otherwise healthy people. Ifsymptoms occur such as numbness, pain, loss of strength, change in skin
color or texture, or loss of feeling in the fingers, hands, or wrists, discontinue the use of this tool and seek medical atteetion. An
anti-vibration system does not guarantee the avoidance ofthese problems. Users who operate power tools onacontinual and regu-
lar basis must monitor closely their physical condition and the condition of this tool.

Ii i, i I Illl I
KNO
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A. INTRODUCTION
Your Trimmer is a versatile product developed for large
lawns and_omake short work ofa waiety of lawncaretasks
trimming, scalping, mowing, and sweeping.
Special Features Include:
• Centrifugal Clutch
• All-Position Carburetor
• Adjustable, Cushioned Assist Handle
• Semi Automatic Line Feed Trimmer Head
• 17" Cutting Path
B. UNPACKING INSTRUCTIONS
1. Remove contents from the carton if you have not
done so.
2. Check parts against the list below.
3. Examine parts for damage. Do not use damaged parts.
4. Noti_'your Sears Store immediately if apart is miss-
ing or damaged.
NOI_: It is normal to hear the fuel f'flter rattle in an empty
fuel tank.
13
|
16
7
IIlllll Illl
€. CARTON CONTENTS
KEY
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
t8
19
Engine
Drive ShafttAssembly w/Safety Label
Shield
Trimmer Head
Assist Handle
2-cycle Engine Oil
Operator's Manual (Not Shown)
Loose Pans Bag (Not Shown)
* LOOSE PARTS BAG CONTENTS:
Flex Shaft Lube
Screw -Shield
Bracket - Shield
Squared Head Screw - Assist Handle
Hex Nut- Assist Handle
T-Handle - Assist Handle
Hex Screw -Clutch Skroud
Hex Nut - Clutch Shroud
Dust Cup -Drive Shaft Housing
Hex Wrench
Screw - Throttle Trigger Housing
Nut- Throttle Trigger Housing
Bracket - Assist Handle
I
QTY,
l
l
l
l
l
l
l
1
I
2
1
1
1
1
2
2
1
I
1
I
1
6
SPECIAL NOTICE
For users on U.S. Forest Land and in some states, including California (Public Resources Codes 4442 and 4443),
Idaho, Maine, Minneso_, New Jersey, Oregon, and Washington: Certain internal combustion engines operated on
forest, brush, and!or grass-covered land in the above areas are required to be equipped with aspark arrestor, maintained
in effective working order, or the engine must be constructed, equipped, and maintained for the prevention of fire. Check
with your state or local authorities for regulations pertaining to these requirements. Failure to follow these requirements
is a violation of the law. This unit is not factory-equipped with a spark arrestor; however, a spark arrestor is avail-
able as an optional part. If a spark arrestor is required in your area, contact your Sears Service Center or Parts Depart-
ment for Spark Arrestor kit #952-701612.

I Hill II I! I I IIIIIIIIIIIIII i I ,i
.Ak___ v(if tool is received assembled, repeat all steps in this section :to be sure assembly is correct
and is adjm"ted for theopemtor.)
I/IIII IIII III III III IIIIIIIIII I IIII III
A. PBJF, PAILATION
This Operator's Manual has been developed to help you
assemble the tool and to provide its safe operation. It is
important that you read the entire manual to become
familiar with the tool before you begin assembly.
2. yma wtnmmd:
a. Flathead Screwdriver.
b. 1-1/4inch wrench or adjustable wrench.
c. Hex Wrench provided with tool.
1. READ YOUR OPERATOR'S MANUAL
i I iiiii
B. ASSEMBLY STEPS
1. DRIVESHAFT HOUSING -. Figure I
a. Place the two Screws (from the loose parts bag) into
the holes on the Clutch Shroud as shown inFigure 1.
b. Position the Lock-Nuts (from the loose parts bag)
in the hex openings in the Clutch Shroud.
c. Tighten theScrewswith the small hexwrench provid-
ed just enough to hold the hardware together while
holding the l_x)ck-Nuts with your other hand.
d. Remove the packing cover from the straight end of
the Drive Shaft Housing.
NOTE: Make sure the Flexible Drive Shaft does
not fall out of the Drive Shaft Housing when the
packing cover is removed. Dirt on the Shaft will
significantly reduce the life ofthe tool. If the Flexi-
ble Drive Shaft falls out of the Housing, clean,
relube, then reinstall. See "Flexible Drive Shaft
Lubrication" in the Maintenance section.
e. Align the bottom groove on the Drive Shaft Hous-
ing with the Ridge on the inner, lower wallof the
Clutch Shroud opening. Turn the Arbor Shaft as
necessary to align the square end of the Flexible
Drive Shaft with the square inside the Clutch
Shroud opening. Firmly push the Drive Shaft
Housing into the Clutch Shroud until it contacts the
Foam Grip or is within 1/8 inch, Figure 1.
f. Tighten the Screws alternately with the small hex
wrench until secure.
t iii, i ,,,,i,,w,,,
DRIVE SHAFT
HOUSING
CLUTCH GROOVE
iyi •
DRIVE SHAFT
HOUSING
ARBOR
Flgln_ 1
7

IgAlrglON:] Do n°tbend the throttle cable.
a. Slide the Throttle Trigger Housing from the Foam
Grip about 1" to 1-1/2".
b. Insert the Throttle Cable through the tunnel in the
Foam Grip until the end of the Cable extends at
least 2 inches beyond the Grip. Figure 3.
c. Hold the Trigger away from the Drive Shaft Hous-
ing and insert the barrel end of the Throttle Cable
into the round opening in the Trigger as shown in
Figure 3.
NOTE: When inserting the barrel end of the
Throttle Cable into the round opening in the
Trigger, make sure that the barrel is completely
inserted and the Throttle Cable is located in the
split in the Arm. Figure 4!(inset).
d. l_ash the Trigger back into the Housing while guid-
ing the Cable through the split in the arm. (Figure
4,) Guide the arm into the Foam Grip t_annel while
replacing the Throttle Trigger Housing flush against
the Grip.
e. Squeeze Trigger against the Foam Grip. Install
Screw and Nut. Figure 5. See Caution below.
FCAUTION:] Do not overtighten the screw. Make
sure the trigger will move freely. There must be at
least 1/8" free play in the trigger. Figure 5. Make
sure the trigger will move freely so the engine €_
fully return toidle when the trigger is released. The
trimmer head must not turn at idle speed to avoid
serious injury to the operator and others.
a. Place the Dust Cup on the Drive Shaft Housing
over the hex nut that is assembled on the Arbor
_Shaft. Figure 6 (inset).
b. Hold the Dust Cup with awrench to keep the Arbor
Shaft from turning. Figure6.
C,
d,
Thread the Trimmer Head onto the Arbor Shaft,
again_stthe Dust Cup, and as tight as possible with
your hand. Figure 6.
NOTE: Unless the Trimmer Head is tightened
adequately, it can unthread the first time the engine
is started. If this occurs, reinstall the Trimmer Head
and tighten more securely.
Press the Tap Button and pull a minimum of 4
inches of Line from the Trimmer Head. Figure
7. Approximately 2 inches of line can be advanc_
each time the Tap Button is pressed.
NOTE: To remove Trimmer Head, hold the Dust
Cup with awrench and unthread the Trimmer Head.
i I
rqu 2
8ARRF_
ENnOF
CABLE
PLIT IN
GER
CABLE SCREW
4rtrare s
1!8" PLAY
lglgu_ 6
TAP BUTTON
Appmzinm_y 2 inches of line
can be advanced each time the
_p Batton t5pmsed.
lqgure 7

Shield -- lqlmmS
_WARNING
Failure to install the shield in the position shown in
Figures 8 and 9 can result in serious injury to the
operator. The length of the shield must be aligned with
the length of the drive shaft housing. Direct the widest
part of the shield toward the engine.
[CAlrriotq: tThe Line Lhniter (on the underside
of the shield) is sharp and cancut you.
a. Match the Key (Raised area) on the Shield with the
Keyway ("V" slot) on the Drive Shaft Housing.
Figure 8 (inset).
b. Rest the bottom of the Shield on topofthe shoulder
of the Drive Shaft Housing above the Dust Cup.
WIDEST PART HARDWARE SHOWN
Ftgm_ 8
C_
NOTE: The bottom of the Shield must rest on top of
the shoulder of the Drive Shaft Housing.
Install the Shield retaining Bracket and Screws as
shown in Figure 8.
NOTE: Itis easier to start the Screws with a screw-
driver and finish tightening with a 3/8" wrench.
d. Tighten the Screws evenly and securely.
NOTE: A small space may be left between the
Bracket and the Shield when hardware is fully
tightened.
&ASSIST HANDLE -- Figures 9 &10
a. Insert the end of the Drive Shaft Housingthrough
the Assist Handle. Figure 9 (inset).
b. Align the Assist Handle between the Safety Label
and the Throttle Trigger Housing. Seat the Drive
Shaft Housing in the groove in the Assist Handle.
Figure 9.
C, Insert the tab on the Assist Handle Bracket into
the slot on the Assist Handle. Figure 9. Then,
lay the Assist Handle Bracket over the Drive
Shaft Housing.
Bracket _,
/Throttle
_'_ Trigger
Housing
Square
Nut
Groove
Label
Drive @
T-Handle
_#/Assist Handle
sjScri
d. Drop the threaded end of the square-head T-
Handle Screw through the opening in the top of
.the T-Handle. Figure 10.
e. Pull on the threaded end of the Screwto bringthe
square head of the Screw past the pin inside the
T-H_dle. Figure t0.
f. Insert the Screw up through the hole in the Assist
Handle and then through the Assist Handle
Bracket. Figure 9.
g. Thread screw into square m,t. Tighten securely.
tCAUTION: IWhen adjusting the Assist Handle
for comfort, be sure that the Assist Handle re-
mains between Engine and Safety Label on
Drive Shaft Housing. Figure 9 •
h. Adjust Assist Handle up or down the Shaft Hous-
ing for comfort.
Before Assembly Top View Assembled
T Handle
Square Head
Screw Seated
Figure 10
9

6. OPERATING POSITION --. Figure lX
a. Before starting the En_ stand as shown in
Figure 11and check forthe following:
i).
2).
3).
4).
5).
Leftarm "fully extended,hand holding Assist
Handle.
Rightarmslightlybent,hand holding theFoam
Grip, fingers on ThrottleTrigger.
Engine below waist level.
Weight of tool evenly distributed between arms.
Without operator bending over, the Trimmer
Head isnear andparallel to theground and easily
contacts the material to be cut.
h. Adjust the Assist Handle up or down the Drive
Shaft Housing (but above the Safety Label) to a
comfortable position.
1). [zx_sen the T-Handle by hand, adjust Assist Han-
dle. Retighten T-Handle by hand only.
,2). Rotatethe Assist Handle from lefttorightif itis
necessary totilt theangle of theTrimmerHead
suchas when cuttingalarge, sloped areasuchas
a ditch bank.
iii Illl
RIGItT ARM
SLIGHTLYBENT,
HANDHOLDING
FOAMGRIE
FINGEIt_SON
THROTTLE
TRIGGER
FACE SHIELD
LEFT ARM EXTENDED
HAND HOLDING
ASSIST HANDLE
ENGINE
IS BELOW
WAIST LEVEL
TRIMM HEADIS
NEAR THE GROUND AND
EASILY CONTACTS
MATERIAL TO BE CUT
Figure 11
fll m, i i
AC gSSOIUE$
lllll1lllllllll1lllllllllllllllllllllllllllllll1lllllllllllllll1lllllllllllllll1ll IlllllllllllllII Illll I
The following accessories are available through Sears Retail Stores, Catalog, Outlets or Service Centers.
ITEM STOCK NO.
Safety Face Shield.. ............................................................... 9-18613
Safety Goggles ............................................ ... .................... 9-1859
2-Cycle Engine Oil .............................................................. 71-30143
Spark Plug .................................................................... 71-86555
Fuel Cap ...................................................................... 71-79705
Replacement Trimmer Head (available only through Sears Service Centers) ............... :71-85805
Replacement Nylon Trimmer Line
-- 400 ft..................................................................... 71-85778
-- 200 fl..................................................................... 71-85608
Replacement Spool with Line ..................................................... 71-85810
Flex Shaft Lube ...... 530-030102
Shoulder Strap Kit ............................................................... 71-85783
Spark Arrestor Kit ............................. m... ........................... 952--701612
Operator's Manual ............................................................ 530-067910
io

I Ill I I Illll Illl Illlll iIlll
ENGINE INMORMATION
II Ill I Ill Ill I Illlllllll II Illlllllllllllllll I k
A. FUELING YOUR ENGINE
1. FUEL SAFETY
a. Use only recommended fuel mixtures.
b. Mix and pour fuel outdoors andwhere there are
no sparks or flames.
c. Use acontainer approved for fuel,
d. Do not smoke or allow smoking near fuel orthe tool
or while using the tool.
e. Wipe up all fuel spills before starting the engine.
f. Move at least 10 feet (3 meters) away from fuel-
ing site before starting engine.
g. Stop engine before removing fuel cap. Allowthe
engine to cool before refueling.
h. Empty fuel tank before storing tool. Use up fuel
left in caJ'buretor by starting engine and letting engine
run until it stops.
i. Store tool and fuel in an area where fuel vapors
cannot reach sparks or open flames from water
heaters, electric motors or switches, furnaces, etc.
_t. FUEL MIX'IIJlt_
• Your tool is powered by a 2-cycle engine which
requires a fuel mixture of regular unleaded gaso-
line and a high quality engine oil specially made
for 2-cycle, air cooled engines. •
The internal design of the 2-cycle engine requires
lubrication of moving parts. Lubrication is provided
when the recommended mixture of gasoline and oil
is used.
•Genuine Sears 40:1,2-cycle engine oil is strongly
recommended for the protection of your unit.
Extensive engineering tests have proven that Sears
2-cycle engine oil resists break-down at operating
temperatures common to 2-cycle engines, resulting
in dependable performance and longer engine life.
• Gasoline must be clean and not over two months
old. After a short period of time, gasoline will chem-
ically break down and form compounds that cause
hard starting and damage in 2-cycle engines.
•The correct measure of gasoline to oil is very
important. Too much oil in the mixture will foul the
spark plug.
I_Lr_tON:I Too little oil or incorrect oil will
cause the engine to overheat and seize.
Always mix the fuel thoroughly in a container
since gasoline and oil do not readily combine. Do not
mix gasoline and oil directly in the fuel tank.
3. USE TIlE FOIJ_WI_G ONLY:
3.2 oz. 2-cycle engine oil to 1 gal. gasoline or 8oz.
2-cycle engine oil to 2.5 gal. gasoline.
(40 parts gasoline to 1 part oil)
SEARS b_-30143
40:1 Ratio
FJ_GINE OIL (3.2 ozJ
ANY GOOD GRADE
16:1 Ratio
AIR=COOLED, 2_CYCLE
ENGINE OIL (8 oz.)
SEARS 2-cycle engine oil mixed at40:1 is strongly
recommended.
If SEARS 2-cycle engine oil is not available, use a
good quality, 2-cycle engine oil mixed at a ratio of
16:1 (8 oz. oil to 1 gallon gasoline).
4. DO NOT USE:
• NMMA Oil-- NationalMarine Manufacturers
Association (formerly BIA)
-- Does not have proper additives for 2-cycle, air-
cooled engines and can cause engine damage.
" AUTOMOTIVE OIL --
-- Does not have proper additives for 2-cycle, air-
cooled engines and can cause engine damage.
CAUTION
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, do not leave fuel in the unit when storing
for 30 days or longer. Start the engine and let it run
until the fuel lines and carburetor are empty. Use fresh
fuel next season. See the "Storage" section for addi-
tional information. Never use engine or carburetor
cleaner products in the fuel tank or permanent damage
can o(_cur.
5. HOW TO MIX FUEL AND FILL TANK
a. Pour 1/2 of the regular unleaded gasoline to be used
into an approved, marked container. Do not mix
gasoline and oil directly in the fuel tank.
b. Add entire measure of engine oil.
c. Cover container tightly and shake for one minute.
d. Slowly remove fuel container cover.
e. Add remainder of gasoline.
f. Cover container tightly and shake again.
g. Slowly remove fuel container cover.
h. Slowly remove fuel cap. See "Specifications" for
location.
i. Fill the tank using a spout or funnel.
j. Reinstall the fuel cap securely. I!

I III
ii ,lul IHI III IIIIIIIIII I II
Ik PIg_PlglKATION
&W G
manual.
Before operating your tool, always:
1. Inspect the entire tool before each use. Replace
damagedparts.Checkforfuel leaksandmakesureall
fastenersare in placeandsecurely fastened.
2. Replace trimmer head parts that are cracked,
chipped, broken, or damaged in any other way
before using this tool.
Use only .080" diameter Sears I.aser Line®.Never
use wire, rope, string,etc.
.
4. Use only with the shield properly attached.
5. oaty e Umnerhe, See"
tions:'Makesurethetrimmerheadis
rmm_d _ _ z_ io'YL_embZ'y"
6. BemretHamm'_mW_ _mOm
See"Cm4,uretorAdjustments:'
7. M_ke carburetor adLjustmemswith the drh_ slmft
bous_gsu_ w_ theuimmerUnefrm
contacting any object. Hold the tool byF_r,d. Do not
use the optional shoulder strap for support.
8. Keep others away when making carburt_r
adjustments.
9. Use only accessories or attachments as recom-
mended by Sears for this tool.
10. Clenntheair_ifdirtybeforeoperatingthetool.
Refer to "Specifications,' for air filter location.
C. STARTING INSTRUCTIONS (For location of controls, refer to "Specifications.")
:1.._ uarm_ the enlpme.
a. Fue! engine. Move atleast 10feet (3 meters) away
from fueling site.
b. Extend 4-6 inches of Line from Trimmer Head.
J &w o
The trimmer head will turn as soon as the e_ine starts.
c. Pest Engine and Shield on ground, supporting Trim-
mer Head offthe ground away from trees, bushes,
onlookers, etc. Figure 12.
d. If using optional Shoulder Strap, place Shoulder
Strap on your shoulder. Start engine before clipping
Shoulder Strap to the tool.
2.For a Cold Engine:
a. Move Ignition Switch to "on:' Figure 13.
b. Move Choke to "full" position. Figure 14.
c. Grasp Foam Grip andsqueeze Throttle Trigger fully.
Keep Throttle Trigger fully squeezed until engine
runs smoothly (through step '$').
d. Pull Starter Rope sharply until engine attempts to
run, but no more than 8 pulls at full choke to avoid
flooding the engine. The engine "'attempts to run"
may be hard to hear. The operator must listen
carefully. After 8 pulls, proceed to step "e" even
if engine has not attempted to run.
e. Move Choke to "half" position. Figure 14.
f. Pull Starter Rope sharply until engine attempts to
run, but no more than 5pulls.
NOTE: lfenginehas not started after 5pulls, repeat
ste_s "a'" through "f"
g. Allow engine to run 5seconds, then move Choke to
"off' position. Figure 9. Keep Throttle Trigger fully
squeezeduntilenginerunssmooth/_
NOTE: If engine dies with Choke at "off" position,
m,ms_ps "'e"throue,h"g:'
STARTING POSITION ]
TCHOKE
Avoid any bodily contact with themuffler when starting
a warm engine. A hot muffler can cause serious burns.
3. Igor a Warm gngln¢:
a. Move Ignition Switch to "on" Figure 13.
b. Move Choke to "half" position. Figure 14.
c. Grasp Foam Grip and squeeze Throttle Trigger
fully. Keep Throttle Trigger fully squeezed until
engine runs smoothly.
d. Pull Starter Rope sharply until engine runs, but
nomore than 5 pulls.
e. Move Choke to "off" position. Figure 14. Keep
.Trigger fully squeezed until engine runs smoothly.
NOTE: Ifengine does not run at_r 5pulls, itispro-
bably flooded. Wait a _v minutes and repeat pro-
cedure with Choke at "off" position. Figure 14.
12

e.
Illll I
4, _r aWsrm_tll!_ (Aner I_Out
a. Refuelengine. Move 10 feet (3 meters) away from
the fueling site.
b. Move ignition Switch to "on" Figure 13.
c. Move Choke to "full" position. Figure 14.
d. Grasp Foam Grip and squeeze Throttle Trigger
fully. Keep Throttle Trigger fully squeezed until
engine runs smoothly.
Pull Starter Pope sharply until engine attempts to
run, but no more than 5 pulls.
IX OPERATING INSTRUCIIONS
g. Move Choke to "off" position. Figure 14.
PullS_m'Ro_ untilenginenms,butnomo_than
5pulls. Keep Tn'ggerfullysqueezeduntilengineruns
smoothly.
NOTE: Ifengine has notstarted, pull Starter Rope
5 more pulls. If enginestiU does not run, it is pro-
bably flooded. Wait a few minutes and repeat pro-
cedure with Choke at "off" position. Figure 14.
1. Bring the engine to cutting speed before entering the
material to be cut.
a,
b.
Do not run the engine at a higher speed than
necessary. The cutting line will cut efficiently when
the engine is run at less than full throttle. At lower
speeds, there is less engine noise and vibration. The
trimmer line will last longer and will be less likely
to "weld" onto the spool.
If the Trimmer Head does not turn when the
engine is accelerated, make sure the Drive Shaft
Housing is properly seated in the Engine Shroud.
Refer to "Assembly-Drive Shaft Housing"
II Illlllllllll I III I
,
.
Always release the Throttle Trigger and allow the
engine to return to idle speed when not cutting.
Make sure the Trimmer Head stops turning when
the Thnmle Trigger is released and the engine runs
at idle speed, For correction, refer to "Carburetor
Adjustments/'
.To stop the engine:
a. Release the Throttle Trigger.
b. Move Ignition Switch tothe ',OFF" position. Figure 13.
USING YOUR TRIMMER
IIIIIIIIII IIIIIIIIIIIII iii iiiiiiii ii iiii i
AWARNING -- T//IIOW$ OBJECTS
The rapidly moving line causes objects tobe thrown violently.
The shield will not provide complete protection to the operator
or others. The operator must wear a safety face shield or
goggles. Always wear heavy; long pants and boots. Keep
others at least 30 feet (10 meters) away.
60 FOOT
AWARNING -- HAZASDZONE
This tool will throw objects and cut. Keep others including
children, animals, bystanders, and helpers at least 30 feet
(I0 meters) away from the operator and tool. Stop the
engine if you are approached.
Trimmer Head
#71-8-5805
Use Only Genuine Replacement Parts
AWARNING -- ntM E0
Trimmer head parts that are chipped, cracked, broken, or
damaged in any other way can fly apart and cause serious
injury. Do not use. Throw damaged parts away. Replace
damaged parts before using the tool. 13

I Illll IllII IIll
I i I/,, ii "
A.__
1. m_laWlm
a. Always wear a safety face shield or goggles. See
"Accessories"
b. Keep hair, fingers, and allother parts of the body away from
openings and moving parts. Alwayswear heavy, long pants,
boots, and gloves. Do not wear loose clothing, jewelry,
short pants, sandals, or go barefoot. Secure hair so it is
above shoulder length. Being fully covered will help pro-
tect you from pieces of toxic plants (such as poison ivy)
thrown by the Trimmer Head, which could be more of a
hazard than touching the plant itself.
c. Do not operate this tool when you are tired,
ill, or under the influence of alcohol, drugs,
or medication.
d. Do not swing the tool with such force that you
are in danger of losing your balance.
e. Never start or run the engine inside a closed
room or building.
f. Keep handles free of oil and fuel.
L]_OL
a. Inspect the entire tool before each use. Replace
damaged parts. Check for fuel leaks and make sure
all fasteners are in place and securely fastened.
b. Use only .080" diameter Sears Laser Line ®.
Never use wire, rope, string, etc.
c. Be sure the shield is properly attached.
d. Make sure tbe trimmer head is properly installed
and securely fastened. Refer to "'Assembly"
e. Be sure the trimmer head stops turning when the
engine idles. See "Carburetor Adjustments."
f.
.
h.
Make carburetor adjustments with the drive
shafthoming supportedtopreventthetrimmer
linefromcontactinganyobject.Holdthetoolwith
your hand. Do rot use the optional shoulder strap for
support.
Keep others away when making carburetor
adjustments.
Use only accessories or attachments recom-
mended for this tool by Sears.
3. CI/Tr/NG
a, Inspect the area to be cut before each use. Remove
objects (rocks, broken glass, nails, wire, string, etc.)
which can be thrown or become entangled in the
trimmer head
b. Always keep the engine on the right side of your
body.
c. Hold the tool firmly with both hands.
d. Keep firm footing and balance. Do not over-reach.
e. Keep the trimmer head below waist level.
f. Do not raise the engine above your waist.
gK_p all parts of your body away from the trim-
mer line and muffler when the engine is running.
h. Use only for jobs explained in this manual.
B, AUTOMATIC LINE ADVANCE
•The trimmer line advances automatically as the line
• wears and reduces the cutting path.
•The line will wear faster and will advance more fre-
quently when cutting against hard surfaces such as
rocks, bricks, concrete, metal fences, etc., than when
cutting against woody objects such as trees or wooden
fences.
If line does not advance properly:
-- Operate the engine at full throttle and allow the line
to strike a hard surface such as concrete or the
ground,
-- If line is 4" or less, stop the engine and check for line
binding or tangling on the spool. See "Trimmer
Head"in the Maintenance Section for rewinding
instructions.
_WARNING
Use only .080" diameter Sears Laser Line®. Other
sizes of line will not advance properly and can cause
serious injury. Do not use other materials such as wire,
string, rope, etc. Wire can break off during cutting and
become a dangerous missile.
_WARNING
Use minimum speed and do not crmvd the line when cut-
ting around hard objects (rocks, gravel, loose objects,
etc), which can damage to the trimmer head, become
entangled in the line, or be thrown causing a serious
hazard.
CUFFING LINE LINE L[M]TF__
ADVANCES CUTS OFF
AUTOMATICALLY LINE TO
PROPER LENGTH
LINELIMITER
•Always keepthe shidd inplace when the toolis being
operated. Figure 22.
14

Illll II IIIIII I Ill
iiii ,,
C. CUTTING MrlTI0116
•The tip ofthe line does the cutting. Allow thelineto
trim at its own pace. You will achieve better results by
not crowding the line into the cutting area. The right and
wrong ways are shown in Figure 16.
• The line will easily remove grass and weeds from
around walls, fences, trees, and flower beds, but it
also can cutthe tender bark oftrees or shrubs and scar
fences. Tohelp avoiddamage to vegetation ortrees with
tender bark, shorten line to4-5 inches anduse less than
full throttle.
• The line will wear faster and will advance more fre-
quently when you are cutting against rocks, bricks,
concrete, metal fences, etc., than when cutting
against trees or wooden fences.
oFor trimming or scalping, use less than full throttle
to increase line life and decrease head wear.
-- during light duty cutting.
-- next to rocks, bricks, concrete, metal fences, etc..
•Formowing orsweeping, use full throttle for agood
clean job.
• Avoid letting the trimmer head continuously contact
the ground during normal cutting. Constant contact
will cause trimmer head damage and premature wear,
lhigm_ 16
AW G
Always v_ar eye protection. Never lean over the trim-
met head. RaZor debriscan ricochet or bethrmminto
eyesandfaceandcauseMMnessorether serious_ury.
L TlUMMmG -Figure X7
Hold the tap button about 3 inches above the ground and
tilt the trimmer head at an angle. Allow the tip ofthe line
to do the cutting. Do not force the trimmer line into the
work area.
2. SCALPING -- Figure 18
The scalping technique removes unwanted vegetation,
Hold the tap button about 3 inches above the ground and
tilt the trimmer head atan angle, Allow the tipofthe line
to strike the ground around trees, posts, monuments,
etc. This technique increases line wear.
3_ MOWING -- Figure 19
Yourtrimmer is ideal for mowing in places conventional
lawn mowers cannot reach. In the mowing position,
keep the line parallel to the ground. Avoid pressing the
head into the ground as this can scalp the ground and
damage the tool.
4. SWEEPING ,- Figure 20
The fanning action of the rotating line can be used for
a quick and easy clean up. Keep the line parallel to and
above the surfaces being swept and move the tool from
side to side.
Figure 17 F_ure 19
Figure 18 Figure 20 ,15

16
• For proper line feed:
-- Use only genuine Sears pre-wound spools and
.080" diameter Sears Laser Line._Use ofother
types of spools or lines can result in excessive
breakage, line welding, and improper line feed.
-- Pre-wound spools offer the most convenient
method for replacing line as well as optimum per-
formance.
• Alwaysclean dirt and debris from the spool and hub
when performing any type maintenance
L/nsCalU_ Spool w/IAne
a. Hold the Trimmer Head as shown in Figure 21.
Press the Lock Tab and turn Cover counter-
clockwise.
b. Remove the Cover and Spool. Figure 22.
c. Clean dirt and debris from all parts.
d. Inspect all Trimmer head parrs for damage.
Replace damaged parts.
AWAmmNO
Trimmer head parts that are chipped, cracked or
damaged in any way can fly apart and cause serious
injury. Do not use. Replace damaged parts before
using the tool.
e. Insert about 6 inches of Line from the inside of
the Hub through the Line Exit Hole to the out-
side to keep the Line from backing into the Head.
Figure 23.
f. ]Route the Line behind the Balancing Pin (Figure
23) while carefully placing the Spool in the Hub.
g. Pull on the Line extending outside the Hub to
make sure the Line will not advance. See Inset,
Eigure 23,
This indicates that the Line is routed properly.
h. Reinstall Cover:
1.) Align the four Catches on the Hub with the
cutouts in the Cover. Figure 24.
2.) Press the Cover onto the Hub.
3.) Turn Cover clockwise. Figt_e 21.
Toremove, turn cover counterclockwise d-,m.
turn cover clockwise qp.A ."
21
IglgUlm 22
LOCK TAB
j.
Check to make sure all four Catches and the .Lock
Tabare properly fastened as shown in Figure 24, then
test the Cover by trying to turn it counter-
clockwise.
Pull on the Line again from outside the Hub. If the
Line can be pulled from the assembled head, it is
not properly muted around the Balancing Pin and
will feed continuously when the Trimmer Head turns.
Remove Cover and re-route Line as shown in
Figure 23. AwAmmm
Allfuuramhmmua hehmmldmdthelodt lablakhld
am theeoMr.Iflmtalkd Im_, tlw€overcan fly
affand_a danl_-uusmlmlle,
t,nwm spwa
a. Follow "'Installing Spool w/Line:' steps "a-d" and
remove any Line remaining on the Spool.
b. Use a40 foot lemr& of .080" Sears Laser Line®.
c. Inse_t 1/16"to 1/8" oftheendofthe Line through one
of the holes inthe rim ofthe Spool. Allow r_ more than
1/8" line extend beyond the rim to avoid interference
with line release action. Figure 25.
d. Wind the Line onto the Spool inthe direction as shown
by the arrow on the Spool and as tightly and evenly as
possible so the line will feed properly. Figure 25.
Iczunm_: I The trimmer head wiUnot functim
properly ifthe spool is filled beyond the notches
around the outside edge ofthe spool.
e. Follow "'Installing Spool w/Line" steps "e-i:'
LINE EXIT
1N LINEONSPOOL
&$SHOWNBYARROW.
lhqgmm 2.$ /

3. _ mmettq the _mm_ t.tm)
•Does notadvance,or bresks while_
-- Improperly muted in head.
-- Improperly wound onto spool.
-- Line size incorrect.
-- Too little line outside head.
0Releases continuously
-- Wound beyond notches on spool.
-- Improperly muted in head.
-- Line size incorrect.
-- Shield installed improperly.
• Welds on spool
-- Line size incorrect.
-- Incorrect spool.
-- Crowding lineagainst material being cut.
-- Cutting at higher sveeds thannecessary.
-- Woundloosely on spool.
OUsage is excessive
-- Improperly muted in head.
-- Line size incorrect.
-- Cutting at high speeds around hard objects.
-- Crowding line against material being cut.
• Pulls back into head
-- Too little line outside of head.
Ill IlllllllllIll III I i llll
GIFJ41EKALMAINTlglqAlqcIg J
II I IlllllI Illllll Illl I
A. MAllqTI_ANCIE SAI3gTY
I. 6. Be sure the trimmer head stops turning when
engine idles. See "Carburetor Adjustments:'
2. 7. Use only .080" diameter Sears Laser Line _.
Never use wire, rope, string, etc.
3. 8. Replace trimmer head parts that are cracked,
Maintain the tool according to recommended pro-
cedures. Keep the trimmer line at the proper length
Never start the engine with the clutch shroud
removed. The clutch can fly apart and cause serious
injury.
Disconnect the spsxk plug before performing
.
maintenance except for carburetor adjustments.
Make carburetor adjustments with the drive shaft.
homing supported to prevent the trimmer line
from contacting any object. Hold the tool with your
hand. Do not use the optional shoulder strap for
,
chipI_, broken, or damaged in any other way
before using the tool.
Use only genuine replacement parts as recom-
mended by Sears.
support.
5. Keep others away when making carburetor
adjustments.
IL I Illl
IgU,llf.tt
Adirty air filter decreases the life and performance of the
engine and increases fuel consumption.
Clean the Air F'dter:
• Always after 5 tanks of fuel or 5 hours of operation,
whichever is less.
t More frequently, in dusty conditions.
1. Loosen the two screws on the Air Filter Cover
enough to remove the cover from the engine. Fig-
ure261.
2. RemovetheAir Filter fromthe Cover. Figure 27.
10. Inspect entire tool. Replace damaged parts. Check for
fuel leaks. Make sure all fasteners are in place and
securely fastened.
III IIIII
3. Wash Filter in soap and water.
4. Squeeze Filter dry and replace in Cover.
[C_J_olq:l Do not clean the air t'dter in
gasoline or other flammable solvent to avoid
creating a fire hazard.
,ReinstalltheAirFilterCover,makingsuretheChoke
exitslot(Figure 27)isplacedovertheChokeLever.
[CAUTION:] Fit air f'dter into the corners of the
housing to keep dust from ent_riug the engine and
causingenginedamage.
lqgure 26
AIR FILTER
EXlTSLor
t7

IllI I I iir IIIIIIIIIIIIIII
i i i ii lli,t
C. STARTER ROPE
&
Newr _rt the engine with the clutch shroud removM. The
cb_tch will fly apart and cause serious injury.
_WA/INING
Do not remove the retaining tab and screw to remove
pulley. The spring beneath the pulley is under tension
and can fly out causing serious injury. If any part of the
imlley t_ming assembly is damaged other than the rope,
do not use the tool. Take it toyour Sears Service Center.
.
2.
Disconnect Spark Plug Wire. Figure 28.
Remove the Screw and Nut in the Throttle Trigger
Housing as shown in Figure 2. Hold the Throttle Trigger
away from Drive Shaft Housing and remove Throttle
Cable from Trigger. Pall Cable out of Foam Grip
tunnel.
3. Remove the four Clutch Shroud Screws as shown in
Figure 28 with the small hex wrench provided.
4. Separate the Clutch Shroud fromthe Engine. Figure 29.
ADANG_JI
Use only a hand tool to remove the clutch. Do not use any
ffpe of mototized tool or strike the clutch in any way. Other-
wise, the clutch will fly apart and cause serious injury.
5. Hold the "Flats" ofthe Clutch with an adjustable wrench
as shown in Figures 29 and 30 and remove the Nut
counterclockwise with a 3/8" socket wrench.
NOTE: Clutch will slide offthe crankshaft intact. Do
not disassemble clutch.
6. Remove the Beveled Washer, Clutch and Large Flat
Washer as shown in Figure30.
7. Remove the Pulley Housing from the Engine. Figure 30.
8. Remove Rope Retention Screw. Remove any remain-
ing rope.
.Hold Pulley Housing as shown inFigure 31. Hand turn
the Pulley clockwise as far as it will go. Then, turnthe
Pulley counterclockwise until the Pulley Notch is
aligned with the Housing Notch next to the Retaining
Tab and Screw. Figure 31. Next, turn the Pulley one
complete turn counterclockwise until the notches are
aligned again.
10. Insert the smallhex wrenchintothehole formed by
the Notches tohotd the Pulley in position. Figure 31,
11.
12,
Use a42" length of replacement Rope.
Move away 10feet (3 meters) from the fuel tank with the
replacement Rope. Use a match and melt both ends ofthe
Rope to prevent fraying.
18
IIIaVlOVESCREa_
Shown without
Drive Shaft Homing
for clarity.
wigure28
ClJYlL_"FLA_"
CLUTCH
Fqure 29
PULLEY HOUSING
CLUTCH
LARGE
FLAT
WASHER
iiiii
BEVELED
WASHER
_CURVES
_AgD
CLUTCH)
NUT

13. Pull the melted end_sthrough a thick, clean rag while
the Pope is still hot to obtain smooth, pointed ends.
14. Insert one endof the R_pe through the Handle and
secure with a knot.
15. Insert the other end of the Rope through the Rope Exit
Hole, into theinside ofthe Housing, intothe Pulley,
and up through the Pulley Hole. See Inset, Figure 31.
16. Wrap Rope counterclockwise around the Pulley
Ratchet and tuck loose end under Rope where it comes
out of the Pulley Hole. Leave a l-inch tail laying flat
on top of the Pulley between the Retainer Rib and the
rope Retention Screw/Post. Figure 31.
1Z Reinstall the Rope Retention Screw into the reten-
tion post, Tighten until snug.
NOTE: Do not overtighten the Screw, Overtighten-
hag the screw can cause the threads in the screw post
to strip out.
18. Hold Rope taut at Rope Exit Hole so it wilt not move
and remove hex wrench.
19 Slowly feed rope into the Pulley Housing.
20. Make sure Spacer is in place as shown in Figure30,
then reverse steps to re-assemble.
I_ON: I When reinstalling theclutch, tighten
the nut just until the beveled washer is flattened
against the clutch. Over or under tightening thenut
can cause engine damage.
F_re 31
HH H I I I II I HH II HIIII
D. FLEXlB_ DRIVE SHAFT LUBRICATION
• Lubricate the Flexible Drive Shaft:
-- After each ten (I0) hours of operation.
-- Before operating if the unit has been stored for
90 days or longer.
•Use Flex Shaft Lube Part No. 530-030102.
NOTE: Atube of"Flex Shaft Lube'" has been supplied
with your unit to be used after the first !0 hours of
operation.
• Use the following procedure for best results:
&w n¢G
If engine has just beenoperated, avoid touching the muf-
tier. A hot muffler can cause serious burns.
[CAITEION:] Lay the Flexible Drive Shaft on a clean
surface. Avoid laying the shaft on the floor, ground, or
on any surface that may have dirt or debris. Even after
wiping the shaft, grease residue can pick up dirt par-
ticles that can cause damage or premature failure.
iHi
/
ICAUTmN,*ITake care to avoid injuring your hands
and fingers with broken wires when checking for
damage or wipingthe flexible drive shaft. A cloth will
not prevent the broken wires from puncturing or tear-
ing your skin.
1. Remove the Screw and Nut in the Throttle Trigger
Housing as shown in Figure 2.
2. Hold the Trigger away from the Drive Shaft Housing and
remove the barrel end of the Cable from the Trigger as
shown in Figure 3.
[CAUTION.., I Do not bend the cable.
3. Pull the Cable from the tunnel in the Foam Grip.
4. Loosen (but do not remove) the Hex Screws and
remove the Drive Shaft Housing from the Clutch
Shroud. Figure 1.
5. Remove the Flexible Drive Shaft from the Drive
Shaft Housing as shown in Figure32,
6. Check the Flexible Drive Shaft for broken wires, twists
or kinks and replace if damage is found.
7. Using a clean cloth, wipe the surface of the Flexible
Drive Shaft thoroughly to remove any old grease.
Figure 34,
8. Apply a uniform coat oflube to the entire surface of the
Flexible Drive Shaft.
9. Inject the remaining €ontents ofthe tube into the topof
the Drive Shaft Housing.
10. Replace Flexible Drive Shaft in the Drive Shaft
Housing.
11. Follow the instructions in '9_sscmbly" to reinstall the
Throttle Cable and the Drive Shaft Housing. 19

IIIll I Illlllll
I Ill Ill
I
• This is a complicated task and it is important to
follow instructions in sequence as indicated.
&Wmmm o
Make carburO_r adjustments with the drive shaft hous-
ing supported to prevent trimmer line from contacting
any object. Hold the tool with your hand. Do not use the
optional shoulder strap for support.
AWARNING
Keep others away when making carburetor adjust-
ments.
_WARNING
Serious injury to the operator and others can occur ifthe
carburetor is notproperly adjusted.
•Poor engine performance can be a result of other
causes such as dirty air filter, carbon build'up
on muffler outlets, etc. See "Trouble Shooting
Chart" before proceeding with carburetor
adjustments.
•The carburetor has been carefully adjusted at the
factory. However, the operator must be sure that
adjustments are made when any of the conditions
occur as mentioned in "Trouble Shooting Sugges-
tions" below.
Very small adjustments can affect engine perfor-
mance. It is important to turn the screw avery small
amount per adjustment and test performance before
making further adjustments. Each adjustment should
be no more than the width of the slot in the adjusting
SCreWS.
1. TROUBI_ SHOOTING SUGGESTIONS
-- Engine will not continue to run at idle position.
See "b" Idle Speed Adjustment" and "e. Low
Speed Mixture Adjustn_nt"
-- ]3"immer Head continues to spin when the engine
idles. See "'b. Idle Speed Adjustment" and "d.
Deceleration Check."
-- Engine diesor hesitates when itshould accelerate.
See "c. Acceleration Check"
-- Loss of cutting power which cannot be corrected
by cleaning the air fdter. See "f. High Speed Mix-
ture Adjustment"
-- Engine does not return to idle from full throttle
within 2 seconds. See "d. Deceleration Check"
--Engine will not run. See "Trouble Shooting
Chart" Then, ifthe carburetor requires adjust-
men*. begin with"2. Basic Carburetor Settings"
AWAmqmG
Thg trimmer line will be spinning during most of this
procedure. Wear your protective equipment and observe
all safety instructions.
20
2.BASIC CARBURETOR SW/'TING$
NOTE: In most cases, your engine can be made to
run properly with minor carburetor adjustments.
Refer to "Trouble Shooting Suggestions" in the left
column for the condition you are experiencing and
follc_, the instructions. Tim basic carburetor settings
are provided in the event they are required.
a. Turn the Low Speed Mixture Screw and the High
Speed Mixture Screw (Figure 34) clockwise just
until they stop. Do not turn the screws until they are
tight as damage to the needle seats can occur:
b. Turn the Low Speed Mixture and High Speed
Mixture Screws one full turn counterclockwise.
c. Follow instructions "'a. Preparation;' through "f.
High Speed Mixture Adjustment?'
3. PROCEDURE
a. PKEPAKATION
l.)Use a fresh fuel mix. See "Fueling Your Engine:'
2. )Make sure the line extends to the length allowed
by the line limiter to provide correct load on
engine.
3.)Start the engine. Cut grass for 3 minutes to warm
engine. The engine must be at operating temper-
ature before carburetor adjustments can be per-
formed correctly.
4.) Stop engine and remove air f'dter by pulling it out
with your fingers. Refer to "Specifications" for
location.
Ix IDLE SPEED ADJUSTMENT
l.)Allow engine to idle.
2.)Adjust Idle Speed Screw (Figure 34) until the
engine continues to run wihtout stalling and
without the trimmer head moving.
-- Turn screw clockwise to increase engine speed
if the engine stalls or dies.
-- Turn screw counterclockwise to slow engine
down and/or to keep trimmer head from
turning.
3.)Follow instructions in "c. Acceleration Check"
and "d. Deceleration Check?'
4.)No further adjustments are necessary if the
trimmer head does not turn at idle speed and
if performance is satisfactory.
_WARNING
Recheck idle Speed after each adjustment. The trimmer
head must not turn at idle speed to avoid serious injury:
to the operator and others.