Sears 143.998003 Operator's Manual

S£/ J:kS

operator's

manual

MODEL NO. 143.998003

SOLID STATE IGNITION

CAUTION:

Read RULES for

Safe OPERATION

and INSTRUCTIONS

Carefully

NGIN

• Operating

• Maintenance

• Repair Parts

d_lb California Proposition 65 WARNING: the engine exhaust from this product contains chemicals

known to the State of Caliibrnia to cause cancer, birth defects or other reproductive harm.

Sold by SEARS, ROEBUCK AND CO., CHICAGO, IT, 60684 U.S.A.

and SEARS CANADA, INC., TORONTO, ONTARIO, CANADA

Printedin U.S.A. 5/1199 181-1202-11

OIL FILL PLUG
AND DIPSTICK

SPARK PLUG

SPARK PLUG WIRE

MODELAND

D.O.M. DECAL

COOLING FINS

LINKAGE

OIL DRAIN

PLUG

'Figure t

THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH IF NOT FOLLOWED COULD
ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY OF YOURSELF AND OTHERS, READ AND
FOLLOW ALL INSTRUCTIONS IN THIS MANUAL AND ANY PROVIDED WITH THE EQUIPMENT ON WHICH
THIS ENGINE IS USED BEFORE ATTEMPTING TO OPERATING.

I THESE SYM4 BOLS MAY APPEAR ON THE ENGINE:

FAST SLOW

liBEl

OFF FULL

STOP CHOKE

AIR INTAKE SCREEN

ENGINES WHICH ARE CERTIFIEDTO COMPLYWITH CAUFORNIA
AND US EPA EMISSIONREGULATIONS FOR ULGE ENGINES: Are

certified to operate on regularunleadedgasoline. Includethe fo{Iow-

ing emission controlsystem(s): EM TWC {if so equipped); De not
{ncludeany user adjustablefeatures - thereforeno0theradjustments

are needed.

OIL & FUEL RECOMMENDATIONS

TO OPERATEENGINE.YOUWILL NEEDTHEFOLLOWING:

(_) A CLEAN, HIGH QUALITY, DETERGENT OIL.

Be sure original container is marked:
A.P.I. service "SJ"or "SF",
FOR SUMMER (ABOVE 32°F; 0°C) USE SAE 30 OIL.

Using multigrade oil wiUincrease oilconsumption.
FOR WINTER (BELOW 32°F; 0°C) USE SAE 5W30 OIL.
(SAE 10W is an acceptable substitute.)

DO NOT USE SAE 10W40 OIL.
OIL SUMP CAPACITY: 26 ounces (1-5/8 U.S. pints).

.77 liter

(_ A FRESH, CLEAN, UNLEADED REGULAR,

UNLEADED PREMIUM, OR REFORMULATED
AUTOMOTIVE GASOLINE ONLY. DO NOT USE

LEADED GASOLINE.
NOTE: DO NOT USE GASOLINE CONTAINING METHANOL

(WOOD ALCOHOL). Gasoline containing upto 10% ethanolor
grain alcohol ('Gasohol"), or up to 15% MTBE (Methyl Tertairy
ButylEther), may beused but requiresspecialcare when engine
is unused for extended periods.

Page 1

See "STORAGE" instructions on page 5.

NOTE: Use (::leanoil and fuel and store in approved, clean
coverer containers. Use clean fill funnels

Never use "stale" gasoline leftover from last season or stored for
long periods.

IMPORTANT

KEEPTHIS MANUAL HANDY AT ALL TIMES FOR FUTURE REF-
ERENCE. READ IT CAREFULLY AND FAMILIARIZE YOURSELF
WITH THE OPERATING, MAINTENANCE AND SAFETY INSTRUC-
TIONS. THIS MANUAL ALSO CONTAINS A COMPLETE PARTS
LISTING.

BEFORE STARTING

READ ALL INSTRUCTIONS PROVIDED WITH THE EQUIP-

MENT ON WHICH THIS ENGINE IS USED.

(_ CHECK OIL LEVEL:

IMPORTANT: NEVER RUN ENGINE UNLESS OIL LEVEL

IS BIETWEEN"FULL" AN D"ADD" MARKS

ON DIPSTICK.
CHECK OIL LEVEL OFTEN DURING ENGINE BREAK-IN.
NEVER RUN ENGINE UNLESS OIL FILL PLUG ISTIGHTENED

SECURELY INTO OIL FILL HOLE.

A, POSITON EQUIPMENT SO ENGINE IS LEVEL,

B. Clean area around oil fill plug (see Figure 1).
C. Remove oil fill plug and dipstick,

181-1202-11

BEFORE STARTING (Continued)

D. Wipe dipstickclean, insert it into oil rill hole and tighten

securely.

E. Remove oil fill plug and check oil level. If level is notup to

"FULL" mark on dipstick,add recommended oil, until it is.

POUR SLOWLY.

Wipe dipstickclean each time oil level is checked.

DO NOT FILL ABOVE "FULL"MARK ON DIPSTICK.

F. Replace oil fill plugand tighten_je_urely.

See "MAINTENANCE" section for any future oil level and oil

change instructions(see Page 2).

(_ FILL FUEL TANK

with gasoline as specified in the preceding"OIL & FUEL

RECOMMENDATIONS" item 2.

NEVER MIX OIL WITH GASOLINE

Never use"stale" gasolineleftoverfrom last seasonorstoredfor
longperiods.

_IL EVER FILL FUEL TANK INDOORS. NEVER FILL FUELTAN K ]

WHEN ENGINE IS RUNNING OR HOT. DO NOT SMOKE
WHEN FILLILNG FUEL TANK.

_1 EVER FILL FUEL TANK COMPLETELY. FILL TANK TO 1/2" ]

BELOW BOTTOM OF FILLER NECK TO PROVIDE SPACE
FOR FUEL EXPANSION. WIPE ANY FUEL SPILLAGE FROM
ENGINE AND EQUIPMENT BEFORE STARTING ENGINE, /

ANY LIQUIFIED PETROLEUM (LPG)OR NATURAL GAS FUEL I
SYSTEM MUST BE LEAKPROOF AND MEET ALL APPLICA-

BLE CODES AND REGULATIONS.

(_ CHECK THE FOLLOWING:

STARTING (Continued)

_11=KEEP HANDS, FEET, HAIR AND LOOSE CLOTHING AWAY I

FROM ANY MOVING PARTS ON ENGINE AND EQUIPMENT.]

_1 WARNING: TEMPERATURE OF MUFFLER AND NEARBY

AREAS MAY EXCEED 150°F (65°C). AVO D THESE AREAS.

REWIND STARTER:

A.

Movechoke leverto FULL CHOKE POSITION.
NOTE: IF RESTARTING A WARM ENGINE AFTER A

SHORT SHUTDOWN, MOVE CHOKE LEVER TO "NO
CHOKE POSITION."

B. Moveequipmentcontrelto START (seaequipmentmanufac-

turer'sinstructions).

C. Gresp starter handle(see Figure2) and pullrepe out,slowly,

untilitpullsslightlyharder. Letrope rewindslowly.Then pull
ropewith a rapidfull arm stroke. Let rope rewindSLOWLY.

Do not let starterhandle snap back againststarter.

D. Repeat instructionC until enginefires. When enginestarts,

move choke lever to 1/2 CHOKE until engine runs smoothly

and then to NO CHOKE POSITION.
NOTE: If engine fires, but does not continueto run, move

choke leverto NO CHOKE POSITION and repeatinstruction
C untileng!nestarts.

Ifangine again fires, butdoes notcontinuetorun,movechoke
lever to FULL CHOKE POSITION and repeat instructionsC

and D untilengine starts.

(_ ELECTRIC STARTER (see Figures 2 and 3):

,_ A. BE SURE EQUIPMENT IS IN NEUTRAL GEAR WITH]

CLUTCHES, BELTS, CHAINS AND SAFETY SWITCHES
DISENGAGED. (FOLLOW EQUIPMENT MANUFACT- I

URER'S INSTRUCTIONS.) THIS SHOULD PLACE ANY
SAFETY SWITCHES IN SAFE STARTING POS TION.

B. Be surespark plugwire isattachedto sparkplug (see Figure

1).

C. Be sure anyignitionswitchon engine orequipment isin ON,

RUN or START position.

1- RECOIL 2 -ELECTRIC _

START IGNITIONSWITCHKEY

Figure2

CHOKE LEVER
NO CHOKE POSITION

_ITION

Figure 3

STARTING

A

NEVER RUN ENGINE INDOORS OR IN ENCLOSED, POORLY J

VENTILATED AREAS. ENGINE EXHAUST CONTAINS CAR- J
BON MONOXIDE, AN ODORLESS AND DEADLY GAS (CAR- I
BON MONOXIDE IS ALSO PRESENT IN ENGINE EXHAUST I

FROM LIQUID PETROLEUM (LPG) AND NATURAL GAS FUEL
SYSTEMS).

Page 2

A, Move choke lever to FULL CHOKE POSITION.

a.

C.

D,

NOTE: IF RESTARTING A WARM ENGINE AFTER A

SHORT SHUTDOWN, MOVE CHOKE LEVER TO
"NO CHOKE POSITION,"

MoveequipmentcontroltoSTART (see equipmentmanufac-
turer'sinstructions).

Pushstarterbuttonofturn ignitionswitchkey(see equipment
manufacturer'sinstructions)tocrank engine.

Crank engine until it fires. When it starts, release starter
button or ignitionswitch key and move choke lever to 1/2

CHOKE until engine runssmoothlyand thento NO CHOKE
POSITION.

Ifengine falters, move chokelever to1/2 CHOKE untilengine
runs smoothlyhand then to NO CHOKE POSITION.

NOTE: If engine fires, but does not continueto run, move
chokeleverto NO CHOKE POSITION and repeat instruction

C and D untilengine starts.

STOPPING

I_ Move equipmentcontrolor any ignitionstopswitchonengine

STOP or OFF (see equipment manufacturer's instructions).

(_ AFTER ENGINE IS STOPPED:

_,IA. DISCONNECT SPARK PLUG WIRE FROM SPARK PLUG I

AND KEEP IT AWAY FROM SPARK PLUG. I

_klB. TURN IGNmON SWITCH KEY (IF SO EQUIPPED) TO I

"OFF" POSITION AND REMOVE KEY FROM SWITCH. I

THIS WILL REDUCE THE POSSIBILITY OF UNAUTHO- I
RIZED STARTING OF ENGINE WHILE EQUIPMENT ISNOT

N USE. J

_IL NEVER STORE ENGINE WITH FUEL IN TANK INDOORS I

OR INENCLOSED, POORLY VENTILATED AREAS, WHERE I
FUEL FUMES MAY REACH AN OPEN FLAME, SPARK OR J
PILOT LIGHT AS ON A FURNACE, WATER HEATER,

CLOTHES DRYER OR OTHER GAS APPLIANCE.

181-1202-11

MAINTENANCE

_ ARNING: TEMPERATUREOF MUFFLER AND NEARBYI

AREASMAY EXCEED150OF(65°C).AVOIDTHESEAREAS.
CHECK OIL LEVEL:

Check oillevel every five (5) operating hours or each time engine

is used. See "2CHECK OIL LEVEL" in "BEFORE STARTING" on
Page 1.

@ CHANGE OIL:

Change oil after first two (2) operating hours and every 25

operatinghours thereafter, more often if operated in extremely

dusty or dirty conditions.

Change oil while engine isstill warm from recentrunning.

_IA. DISCONNECT SPARK PLUG WIRE FROM SPARK PLUG 1

AND KEEP IT AWAY FROM SPARK PLUG, |

B. Clean area around drain plug (see Figure1).
C. Positionequipmentso engineoildrain plugislowestpointon

engine,

D. Remove oil drain plug and oil fill plug to drain oil

E. Replace oil drain plugand tighten securely,

F. Fill oil sump with recommended oil. See "OIL & FUEL REC-

OMMENDATIONS" and =CHECK OIL LEVEL" on Page 1.

G. Replace oil fill plug and tighten securely.

H. Wipe up any spilled oil.

(_AIR CLEANER

IMPORTANT: NEVER RUN ENGINE WITHOUT COMPLETE

AiR CLEANER INSTALLED ON ENGINE.

A. TO SERVICE FILTER(S) (see Figure 4):

1. FOAM FILTER:

Clean and re-oil every 3 months or every 25 operating

hours. Clean andre-oil daily if used in extremely dusty or
dirty conditions.

a, Wash in water and detergent solution and squeeze

(don't twist) until all dirt is removed.

b. Rinsethoroughly in clear water.
c. Wrap in a clean cloth and squeeze (don't twist) until

completely dry.

d. Saturate with engine oil and squeeze (don't twist) to

distributeoil and removeexcess oil.

2. PAPER FILTER:

DO NOT ATTEMPT TO CLEAN OR OIL FILTER.

Replace once a year or every t00 operatinghours,more
oftenif usedin extremely dusty conditions.

Replacement filters are available at any Sears Roebuch
and Co. (or Sears Canada, Inc.) Service Center.

B. TO REMOVE AND INSTALL RLTER:

1. Remove wing nut and cover.

2. Slidefoam filteroffpaper filter..

3. Inspectfilters for discolorationor dirtaccumulation. If
eitherispresent,serviceperpreceding"TO SERVICE
FILTER(S)" instructions.

4. Remove nut and paperfilter (if service is necessary).

5. Clean topside of base and inside ofcover thoroughly.

6. Installpaper filter and nut. Tightennut fingertightand

then turn it one (1) more completeturn.

7. Slidefoam filter over paper filter,

8. Installcover and wing nut. Tighten wing nut.

Page 3

MAINTENANCE (Continued)

_WING NUT

NUT

BASE--

Figure4

(_ SPARK PLUG (seeFigure5)=

This spark ignitionsystem meets al[ requirementsofthe Cana-
dianInterference-CausingEquipment Regulations. This engine

complieswithall currentAustralianand New Zealand limitatiOns
regardingelectromagneticinterference. Check spark plugyeady
or every 100 operatinghours.

A. Clean area around spark plug.

B. Remove and inspect spark plug.

C. Replace spark plugif electrodes are pitted,burnedor por-

celain is cracked. For replacementuse ChampionRJ17LM
or equivalent.

NOTE: A resistorspark plug mustbe usedfor replacement.

D. Check electrode gap with wire feeler gauge and setgap at

.030 if necessary.

E. Install spark plug,tightensecurely.

ELECTRODES

.030 GAP

Figure5

(_ COOLING SYSTEM (seeFigure1):

IMPORTANT: Frequentlyremovegrassclippings,dirtand debris
fromcooling fins, air intake screen and levers and linkage. This
willhelp ensure adequate cooling and correctenginespeed.

(_)'CHECK ENGINE AND EQUIPMENT OFTEN FOR LOOSE]

_1= NUTS, BOLTS AND AI"FACHMENTS, AND KEEP THESE_

I ITEMS TIGHTENED.

ADJUSTMENTS

DO NOT MAKE UNNECESSARY ADJUSTMENTS. FACTORY SET
TINGS ARE SATISFACTORY FOR MOST APPLICATIONS AND
CONDITIONS. IF ADJUSTMENTS ARE NEEDED, PROCEED AS
FOLLOWS:

(_ CARBURETOR (see Figure6):

If you think your carburetor needs adjusting, see your nearest
SEARS, ROEBUCK AND CO. (OR SEARS CANADA, INC.)
SERVICE CENTER. Engine performanceshouldnotbe affected
at altitudesup to7,000 feet. For operation at higher elevation,
contactyour nearest SEARS, ROEBUCK AND CO. (OR SEARS

CANADA, INC.) SERVICE CENTER.

18t-1202-11