Sears Craftsman 143.726182 User manual

Sears
owner's
manual
MODEL NO. 143.726182
Se .- ~/D4D
CAUTION:
Read RULES for
Safe OPERATION
and INSTRUCTIONS
Carefully
CRAFTSMAN ~
ENGINE
• Operating
• Maintenance
• Repair Parts
Sold by SEARS, ROEBUCK AND CO., Chicago, IL. 60684 U.S.A.
and SIMPSONS - SEARS LIMITED, Toronto, Ontario, Canada .
Printed in U.S . A.
2-1-82
181 -383- 11
another free manual from www.searstractormanuals.com

SPARK PLUG
AIR CLEA N ER
OIL FILL PLUG AND DIPST I CK--
MODEL AND SERIAL NUMBERS HERE
CO OLING FIN S
\\- -)
STARTER HANDLE
LEVERS AND LINKAGE
MUFFLER
Figure 1
A
THIS
SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH IF NOT FOLLOWED COULDA
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 OPERATE YOUR CRAFTSMAN ENGINE.
THE FOLLOWING SYMBOLS MAY APPEAR ON YOUR ENGINE: 1
...
1
FULL m OFF
~ FAST
..... SLOW
@STOP
CHOKE
OIL & FUEL RECOMMENDATIONS
To start and operate your Craftsman engine, you will need the
following:
®
A CLEAN, HIGH QUALITY, DETERGENT OIL.
Be sure original container is marked with engine service
classification
"SC," "SO," "SE" OR "SF."
DO NOT USE SAE10W40 OIL.
FOR SUMMER (ABOVE J20F) USE SAE 30 OIL.
ISAE 10W30
is an acceptable substitute.)
FOR WINTER (BELOW J20Fl USE SAE 5W20 or 5W30 OIL.
(SAE 10W is
an acceptable substitute.)
Oil Sump capacity is approximately 19 ounces (1-1/8 pints).
A
FRESH, CLEAN, UNLEADED AUTOMOTIVE
GASOLINE. (Leaded "Regular" grade gasoline is an accept-
able substitute).
DO NOT USE GASOHOL.
NOTE:
Use clean oil and fuel and store in approved, clean, covered
containers.
Use clean fill funnels.
IMPORTANT
KEEP THIS MANUAL HANDY AT ALL TIMES FOR FUTURE
REFERENCE. READ
IT CAREFULLY AND FAMILIARIZE
YOURSELF WITH THE OPERATING AND MAINTENANCE AND
SAFETY INSTRUCTIONS. THIS MANUAL ALSO CONTAINS A
COMPLETE PARTS LISTING.
PRE-START INSTRUCTIONS
G) Read all instructions provided with the equipment on which this
engine is used.
® FILL OIL
SUMP WITH OIL. See preceding "OIL & FUEL
RECOMMENDATIONS," Item CD for correct oil and Figure 1for
oil fill locations.
POSITION EQUIPMENT SO ENGINE IS LEVEL.
Remove OIL FILL PLUG and DIPSTICK and place it on a clean
surface.
Fill oil sump, slowly, to "full" mark on DIPSTICK. DO NOT
OVERFILL. OIL FILL
PLUG must be seated fully and tightened
and locked securely into oil fill hole when checking oil level.
Oil level should be checked frequently during initial engine
break-in period. OIL
FILL PLUG must be seated fully and
tightened and locked securely into oil fill hole when engine is
running.
FILL FUEL TANK with gasoline as specified in the preceding
"OIL & FUEL RECOMMENDATIONS," Item(!).
NEVER MIX OIL WITH GASOLINE
Never use "stale" gasoline left over from last season or stored
for long periods.
~ NEVER FlU. FUEL TANK fNDOORS. NEVER FILL FUEL
.. TANK WHEN ENGINE ISRUNNING OR WHILE ENGINE JS
HOT.
~ NEVER FILL FUEl TANK COMPL£T£LY. FILL TANK
.. WITHJN 1/4 TO 1/2 INCH OF TOP OF TANK TO PROVIOE
SPACE FOR FUEL EXPANSION. WIPE ANY FUEL
SPILLAGE FROM ENGINE AND EQUIPMENT BEFORE
STARTING ENGINE.
Page 1
181 - 383-11
another free manual from www.searstractormanuals.com

PRE-START INSTRUCTIONS tcontinuedl
®
"
CHECK THE FOLLOWING before attempting to start your
engine:
A. BE ; WRE EOUIPMENT ~ : iS. . iN : : Ne · urt~AL i G~AR WITH
. ¢(QTCHIS .s, BELtS } CHAINS, ·· ere :, blS!NGAGEO ,
{fOLLOW EOUif:iM£Nt · MANUFACTURER'S IN ·
STRUCTIONS.} THIS
SHOULD PLACE. ANV SAFETY
SWITCHES
IN SAfE STARTING POSITION.
B. Be sure SPARK PLUG WIRE is attached to SPARK PLUG.
(see Figure 1)
C. Be sure any ignition switch on engine or equipment is in ON,
RUN or START position.
D.
Be sure FUEL FILL CAP air vent is open.
STARTING INSTRUCTIONS
h NEVER. RUN ENGlNE lNDOORS OR IN ENCLOSED,
.. POOf\tYVEN'f'ILATED AREAS. ENGINE EXHAUST CON-
TAINS CARBON MONOXIDE, AN ODORl.ESS AND
DEADLY GAS. . ..
h KEEP HANDS, FEET, HAIR AND LOOSE CLOTHING
.. AWAY FROM ANY MOV!NG PARTS ON .ENGINE AND
EQUIPMENT.
h WARNING -TEMPERATURE OF MUFFlER AND NEAR-
.. BY AREAS MAY EXCEED 1SOOF (OO'Cl. AVOID THESE
AREAs. .. .
G) COLD ENGINE START (Engine has not been run recently).
A. Move remote control on equipment to
CHOKE (see equip-
ment manufacturers instructions).
B. START ENGINE
1. Grasp STARTER HANDLE (see Figure 2) and pull rope
out, slowly, until
it pulls harder dueto engine compres-
sion. Let rope rewind slowly.
2. Pull rope with arapid continuous full arm stroke. Let rope
rewind SLOWLY. Don't let
STARTER HANDLE snap
back against starter.
3. Repeat preceding Instructions 1 and 2 until engine fires
and when engine starts, move equipment control to
FAST position.
Ifenginefalters, move equipment control to CHOKE untill
engine runs smoothly and then to FAST.
NOTE: If engine fires, but fails to start, move equipment
control to FAST and repeat preceding Instructions 1 and
2 until engine starts.
If engine fires, butfails to start again, repeat preceding In -
structions 1, 2 and 3 until engine starts.
®
WARM ENGINE START (Engine still warm from recent
running).
NOTE -Warm engine may start without choking.
A. Move remote control on equipment to FAST.
B. START ENGINE
1. Grasp STARTER HANDLE (see Figure 2) and pull rope
out, slowly, until it pulls harder due to engine compres-
sion. Let rope rewind slowly.
2. Pull rope with arapid continuous full arm stroke. Let rope
rewind SLOWLY. Don't let
STARTER HANDLE snap
back against starter.
3. Repeat preceding Instructions 1 and 2 until engine starts.
Ifenginefalters, move equipment control to CHOKE untill
engine runs smoothly and then to FAST.
NOTE: If engine fails to start after a reasonable number
of starting attempts, follow preceding " CD COLD
ENGINE START" instructions.
TO STOP ENGINE
G)
®
Move remote control on equipment or any ignition stop switch
on engine to
STOP or OFF position (see equipment manu-
facturer's instructions).
AFTER ENGINE IS STOPPED:
h A. DISCONNECT SPARK PLUG WIRE FROM SPARK
.. PLUG AND PLACE IT WHERE IT CAN NOT CONTACT
SPARK PLUG. . ·
h B. TURN IGNITION SWITCH KEY If SO EQUIPPED. TO
.. '' OFF" POSITION AND REMOVE KEY FROM SWITCH.
THIS WILL REDUCE THE POSSIBILITY OF
UNAUTHORIZED STARTING OF ENGINE WHILE
EQUIPMENTfS NOT IN USE.
h C. NEVER STORE ENGINE WJTH FUEL IN TANK IN~
.. DOORS OR IN ENClOSED, POORLY VENTILATED
ENCLOSURES,WHERE
~UEL fUMES MAY REACH AN
OPEN FLAME, SPARK OR PILOT LIGHT AS ONA
FURNACE, WATER HEATER. CLOTHES DRYeR, ETC.
Figure 2
Page2
181-383-11
another free manual from www.searstractormanuals.com

MAINTENANCE
G) CHECK OIL LEVEL REGULARLY.
®
POSITION EQUIPMENT SO ENGINE IS LEVEL.
Check level every five
(5) operating hours or each time equip-
ment is used. Always clean area around OIL FILL PLUG (see
Figure 1) before removing plug, to avoid contaminating oil with
dirt, grass clippings, etc. Add oil as necessary. DO NOT RUN
ENGINE UNLESS PROPER OIL LEVEL IS MAINTAINED.
LEVEL MUST BE BETWEEN "FULL" AND "ADD" MARK ON
DIPSTICK. See Instructions ® and ® in preceding "PRE-
START INSTRUCTIONS"
(P age 1).
CHANGE OIL -after first two (2) hours of operation and
every twenty-five
(25) hours thereafter, or more often if
operated in extremely dusty or dirty areas.
DRAIN OIL -Position equipment so that engine OIL DRAIN
PLUG (see Figure 1l is lowest point on engine. Remove OIL
DRAIN
PLUG and OIL FILL PLUG (while engine is still warm)
and allow oil
to drain completely.
Replace OIL DRAIN PLUG and tighten securely. Refill oil sump
with new oil
of proper viscosity and service classification per
preceding
"OIL & FUEL RECOMMENDATIONS" (Page 1).
Replace OIL FILL PLUG and tighten securely. See Instructions
®and@ in preceding "PRE-START INSTRUCTIONS" (Page
1).
® SERVICE AIR CLEANER (see Figure 3)
PRE-FILTER (Cloth):
A. Remove and wash in water and detergent solution every ten
(
10) operating hours or moreoften if used in extremely dusty
or dirty conditions.
B.
Rinse thoroughly in clear water.
C. Dry thoroughly.
FILTER (Paper):
Replace
FILTER once a year or more often if used in extremely
dusty or dirty conditions.
DO NOT ATTEMPT TO CLEAN OR OIL FILTER.
Replacement FILTERS are available at any Sears Roebuck and
Co. (or Simpsons-Sears Limited) Service Center.
To install new FILTER, proceed
as follows:
A. Loosen two COVER SCREWS (These need not be removed
completely).
B. Turn
COVER counterclockwise and remove it and FILTER
from BASE. Discard FILTER .
C. Clean inside of BASE and COVER thoroughly.
D.
In sert new FILTER into COVER and reassemble COVER to
BASE as it was before removal. Tighten COVER SCREWS
securely.
Replace PRE -FI LTER . Be sure it is completely dry before replac-
ing.
Pull PRE-FILTER elastic band over one ear of BASE and
COVER.
NEVER RUN ENGINE WITHOUT COMPLETE AIR
CLEANER INSTALLED ON ENGINE.
®
®
CLEAN COOLING SYSTEM frequently, by removing any
build-up
of grass, dirt or other debr is from the cylinder and
cylinder head
COOLING FINS, AIR INTAKE SCREEN and car-
buretor governor LEVERS AND LINKAGE. This will help insure
adequate cooling and correct engine speed and will reduce the
possibility of overheating and mechanical damage.
INTAKE AIR FILTER (see Figure 1)
Clean every 4 to 8 hours. Proceed as follows:
1. Remove and tap lightly.
2. Knead with hands to remove any remaining dirt. Air pressure
may also be used,
if available.
3. Replace on engine.
SPARK PLUG (see Figure 1)
Clean and reset gap periodically. Clean area around SPARK
PLUG base, prior to removal, to pre vent dirt from entering
engine. Replace SPARK
PL UG ifelectrodes are pitted or burned
or if porcelain is cracked. Clean SPARK PLUG by carefully
scraping electrodes (do not wire brush or sand blast). Be sure
entire SPARK PLUG
is clean and free of foreign material. Check
electrodes gap with wire feeler gauge and reset gap
to .030 if
necessary. If replacing SPARK PLUG, use Champion J-8 or
J-17LM or equivalent (see note below) and tighten to 15 foot
pounds
or if lacking torque wrench tighten firmly.
NOTE: If your engine is equipped with a Champion RJ-17LM
resistor spark plug, it
is in compliance with the Radio Noise
Limitations Order (Radio Frequency Interference) issued
by the
Ministry
of Communications of the Canadian Telecommunica-
tions Regulations Branch.
COMPLIANCE WITH RADIO INTERFERENCE REGULATIONS
CERTIFIED.
CERTIFIE CONFORME AU REGLEMENT SUR LE
BROUILLAGE RADIO ELECTRIQUE.
To remain in compliance, a Champion RJ -17LM resistor spar~
plug must be used for any replacement. .
(j) oo~c;t< ENQit!l~ A.NP. EO.Ol~MEN1: ' ~eo~~Nn.v FOA
J.:Oc:)~e NU.T~ t BQLTSiATfAP.ftMEf!T~~ ~'fC.~• AND t(E~f
A THESE lTgM~ "f*QHT:E~HUik ., ). . ·· ·····.··············<• · ······················. . •. · . ' ...•..
PRE-FILTER
(CLOTH)
(PAPER)------- - CO VER
FILTER ~
.i i I JJ .· /SCREWS I~
~ BASE
~
Figure 3
Page 3
181 - 383-11
another free manual from www.searstractormanuals.com

ADJUSTMENTS
DO NOT MAKE UNNECESSARY ADJUSTMENTS. FACTORY SET-
TINGS ARE SATISFACTORY FOR MOST APPLICATIONS AND
CONDITIONS. IF ADJUSTMENTS ARE NEEDED, PROCEED AS
FOLLOWS:
_J) CA RBURETOR ADJUSTMENTS (see Figure 4)
®
A. HIGH SPEED ADJUST NEEDLE is pre-set at the factory.
(1-1/2 turns open) Re-adjustment should not be necessary.
B. Close IDLE ADJUST NEEDLE by turning clockwise. Close
finger tight only. Forcing may cause damage.
C. Open IDLE ADJUST NEEDLE by turning 1-1/4 turns
counterclockwise.
D. Start engine. Follow preceding STARTING INSTRUC-
TIONS.
Run engine a few minutes to warm it up.
E. With engine running at IDLE speed, adjust IDLE ADJUST
NEEDLE 1 /8 turn at atime, clockwise and counterclockwise,
until engine runs smoothly.
Allow several seconds between each adjustment for engine
to adapt to new setting.
NEVER
TAMPER WfTH £NGJNE GOVERNOR WHICH lS
FACTORY SET FOR PROPER ENGINE SPEED. OVER-
SPEEDING ENGINE ABOVE FACTORY HIGH SPEED
SETTING
CAN BE DANGEROUS.
FOR ANY MAJOR ADJUSTMENTS OR REPAIRS, CONTACT
YOUR NEAREST SEARS ROEBUCK AND
CO. (OR
SIMPSONS-SEARS LIMITED) SERVICE CENTER.
CARBURETOR
HIGH SPEEO ADJUST NEEDLE
Figure 4
STORAGE
NEVER STORE ENGINE WITH FUEL ~N TANK INDOORS
OR IN ENCL.OS£0, POORLY VENTilATED ENCLOSURES.
WHERE FUEL FUMES MAY REACH AN OPEN FlAM£ ,
·. ~~~~~?a$i~i$~&:~~~~~~~ :: i~ ; flJA.NA.CE ~··~i~~
If engine is to be un-used for 30 days or more, prepare as follows:
G) Remove all gasoline from CARBURETOR and FUEL TANK to
prevent gum deposits from forming on these parts and causing
possible malfunction
of engine.
A
®
®
A. Run engine until FUEL TANK is emptyand engine stopsdue
to lack of fuel.
B. Disconnect
FUEL LINE at CARBURETOR or FUEL TANK.
Be very careful not
to damage FUEL LINE , Fittings or FUEL
TANK.
Drain any remaining fuel from System
If oil has not been changed recently, this may be a good time to
do it. See "CHANGE OIL" instructions in "MAINTENANCE"
section.
Remove SPARK PLUG and pour one
(1) ounce (0,029 Liter) of
engine oil into spark plug hole. Crank engine over, slowly,
several times.
h AVOID SPRAY . FROM $PARK PlUG HOLE WHEN
.. CRANKING ENGINE OVER' SLOWtY;
Replace SPARK PLUG.
Clean engine by removing any clippings, dirt, or chaff from ex-
terior of engine.
GENERAL
Just as your automobile needs professional mechanical maintenance
from time
to time, so does your Craftsman engine. Replacement of
thespark plug and ignition pointsis made necessaryby NORMALuse.
Professional Air-Cooled Engine Service is
as close as your nearest
Sears Roebuck and Co. (or Simpsons-Sears Limited) Service Center.
A yearly check-up or tune-up by Sears is a good idea to avoid
breakdowns or delay
... do it at the end of the season, then you're
ready for the next.
We even prepare it for storage for you.
Page 4
181-383-11
another free manual from www.searstractormanuals.com

""''
\
Page 5
181-383-11
another free manual from www.searstractormanuals.com

\
l
l
TROUBLESHOOTING
THE FOLLOWING MAY HELP AVOID A DELAY IN YOUR WORK OR SAVE THE
EXPENSE OF A SERVICE CALL.
ENGINE FAILS TO S TA RT OR STARTS WITH DIFFICULTY
CAUSE REMEDY
Controls not in start position. Move
ENGINE CONTROL or equipment control to "HI" or START position.
See "STARTING INSTRUCTIONS" in this manual.
Sparkplug wiredisconnected from spark plug. Connect spark plug wire
to spark plug.
Spark plug fouled. Remove spark plug and clean.
See "SPARK
"MAINTENANCE" section in this manual. PLUG" instructions in
Spark plug porcelain cracked.
Replace spark plug.
Insufficient fuel.
Fill fuel tank per "PRE-START INSTRUCTIONS".
Water or dirt in fuel.
Drain fuel tank and re-fill with clean, fresh gasoline. See "PRE-START
INSTRUCTIONS" in this manual.
Improper carburetor adjustment. Adjust carburetor (if applicable).
See "ADJUSTMENTS" section in this
manual.
Fuel fill cap air vent hole obstructed.
Open air vent hole in top of fuel fill cap.
ENGINE LACKS POWER
CAUSE REMEDY
Dirty air cleaner.
Replace or clean air cleaner per "SERVICE AIR CLEANER" in
"MAINTENANCE" section in this manual.
Improper carburetor adjustment. Adjust carburetor (if applicable). See "ADJUSTMENTS" section in this
manual.
Lack of lubrication.
Fill oil sump to proper level. See "PRE-START INSTRUCTIONS" section in
this manual.
ENGINE MISSES UNDER LOAD
CAUSE REMEDY
Spark plug fouled. Remove spark plug and clean.
See "SPARK PLUG" instructions in
"MAINTENANCE" section in this manual.
Spark plug porcelain cracked.
Replace spark plug.
Improper spark plug gap.
Regap spark plug electrodes. See "MA INTENANCE" section in this manual.
Improper carburetor adjustment. Adjust carburetor (if applicable).
See "ADJUSTMENTS" section in this
manual.
Page 6
181-383-11
another free manual from www.searstractormanuals.com

CRAFTSMAN 4-CYCLE ENGINE
158
Page 7
MODEL NUMBER: 143.726182
3
,J
BASIC ENGINE
Refer to Parts List for product
on which engine is used for
an y Unlisted Eng i ne Parts.
~~18
78 - -~
...._ I
'' I
18 1 -383-11
another free manual from www.searstractormanuals.com

\
'-)
~ .•
I
~
CRAFTSMAN 4-CYCLE ENGINE
Ref.
No.
1
2
3
4
5
5
6
6
7
8
9
11
12
13
14
14
14
14A
14A
14A
15
15
15
16
17
18
19
21
22
23
24
25
26
27
28
30
31
32
33
34
35
37
37
38
39
40
41
42
43
44
45
46
48
Part
No.
32586B
27652
27642
32630
32783
32784
27878A
27880A
27882
27881
32581
34889
29783
27884
34517
34518
34519
32592B
32593B
32594B
32595
32596
32597
27888
32591C
660662B
34242
32115
34034
31303B
28427
34011A
*30684
31546
650488
33876
650489
*32631
30938A
30939A
650697A
33636
34251
Canada
*27896
28423
28424
28425
27793
650128
27627
*27915
30195A
30196
Part Name
Cylinder Assy. (Incl. Nos. 2, 3 & 4)
Pin, Dowel
Plug, Sq. hd. pipe (oil drain)
Seal, Oil
Valve,
Intake (Std.) (Incl. No. 9)
Valve, Intake (1/32" oversize) (Incl.
No.9)
Valve, Exhaust (Std .) (Incl. No. 9)
Valve, Exhaust (1/32" oversize)
(Incl. No.9)
Cap, Upper valve spring
Spring, Val ve
Cap, Lower valve spri ng
Crankshaft Assy. (Inc l. Nos. 12 &
13)
Pin, Groove
Gear, Crankshaft
Piston, Pin & Ring Assy. (Incl. Nos.
14A, 15 &
16) (Std.)
Piston, Pin & Ring Assy. (Incl. Nos.
14A, 15 & 16) (. 010 oversize)
Piston, Pin & Ring Assy. (Incl. Nos.
14A, 15 & 16) (.020 oversize)
Piston & Pin Assy. (Incl. No. 16)
(Std.)
Piston & Pin Assy. (Incl. No. 16)
(.010 oversize)
Piston & Pin Assy. (Incl. No. 16)
(.020 oversize)
Ring
Set, Piston (Std.)
Ring Set, Piston (.010 oversize)
Ring
Set, Piston (.020 oversize)
Ring,
Piston pin retaining
Rod Assy., Connecting (Incl. Nos.
18 & 19)
Screw, Connecting rod
Dipper, Oil
Camshaft (Mech. Compression
Release)
Lifter, Valve
Cover, Cylinder (Incl. Nos. 24, 27 &
106)
Seal, Oil
Dipstick, Oil (Incl. No. 73)
Gasket, Cylinder cover
Bushing, Crankshaft
Screw, Hex hd . Sems, 1/4-20 x
1-1/4
Gasket, Stator
Screw, Hex hd . Sems, 1/4-20 x 5/8
Gasket, Cylinder head
Head, Cylinder
Cover, Cylinder head
Screw, Hex flange hd. , 5/16-18 x
2-1/2
Plug,
Spark (Champion J-8 or
equiva le nt) Except for Canada
Resistor
Spark Plug (Canadian
R
egu lation s re quire RJ-17LM
resistor spark plug)
Gasket, Valve spring cover
Body Assy, Breather
Element, Breather
Cover, Valve spr ing
Clip, Conduit
Sc rew, Fil. hd. Sems, 10-24 x 1/2
Tube, Breather
Gasket, Intake
Flange, Carburetor (Incl. Nos. 76 &
80)
Screw, Fit. hd., 5/16-18 x 3/4
Ref .
No.
49
50
52
53
54
55
56
57
63
64
65
66
69
70
71
72
73
74
75
76
78
80
81
82
83
84
85
87
88
89
90
91
92
97
101
102
103
104
106
107
108
109
113
118
120
121
124
128
129
130
131
133
137
138
144
145
151
153
154
155
156
Page 8
MODEL NUMBER: 143.726182
P art
No.
650152
29642
29826
29216
650548
32326A
30826
30824
30699C
29536
650561
34374
29747A
32158D
650815
8116
33590
33893A
*31688
29752
26460
6505n
30590A
30820
*27272
29918
30205
31691
650521
30727
31715
650494
30700
30936
29574
32862
29633
32332
31845
30591
29193
30588A
30688
30962
650128
30622
29716
33110A
32589
31843A
28763
650493
650163
31431
650542
31757
28942
31902
32203
32204
31667
Part Name
Screw, Fil. hd. Sems, 8-32 x 3/8
Ring, Retaining
Screw, Hex washer hd., 10-32 x 3/4
Lock Nut, Hex "Keps" 10-32
Screw, Hex washer hd., 8-32 x 5/16
Governor Lever Assy.
Spring, Extension
Link, Governor-to-throttle
Rod Assy., Governor (Incl. Nos . 91
&92)
Baffle, Blower housing
Screw, Hex washer hd. Durlok ,
1/4-20 X 5/8
Decal, Instructio n
Screw, Hex hd. Sems, 5/16-24 x 3/4
Housing, Blower
Washer, Belleville
Nut, Crankshaft
"0" Ring
Tube,
Oil filler
Gasket, Carburetor
Nut & Lockwasher Assy., 1/4-28
Clamp, Fuel line
Screw, Flat hd. Sems, 1/4-28 x
1-1/8
Washer, Flat
Baffle, Heat
Gasket, Air cleaner
Lockwasher No. 8 E.T.
Bracket, Governor adjusting
Bracket, Air cleaner
Screw, Fil. hd. Sems, 10-32 x 1-1/8
Element, Air cleaner
Body Assy ., Air cleaner
Screw, Fit. hd . Sems, 6-40 x 5/16
Yoke, Governor
Flange, Air cleaner
Elbow , 90°
Nut, Conduit
Muffler
Nipple , Exhaust pipe
Shaft, Mechanical governor
Gear Assy ., Governor (Incl. No . 81)
Ring, Retaining
Spool, Governor
Screw, Hex hd. Sems, 1/4-20 x 112
Line, Fuel
Screw, Fit. hd. Sems, 10-24 x 1/2
Extension, Blower housing
Screw, Pan hd. Sems, 1/4-28x 7/16
Control Assy., Remote Speed (Incl.
No. 56)
Key, Flywheel
Bracket, Governor gear
Screw, Hex washer hd. shake-
proof, 10-32 x 19/32
Screw, Hex hd. Sems, 1/4-20 x
1-3/4
Screw, Fil. hd . Sems, 10-32 x 7/8
Elbow , Air cleane r
Screw, Hex hd. 5/16-18 x 3/4
Base, Engine mounting
Screw, Hex was her hd. Sems,
10-32 X 3/8
Wire, Ground
Air cleaner, Starter
Bracker, Starter air cleaner
Spring, Pre-cleaner bag
*Indicates Parts Included in
Gasket Set, Ref No. 169.
181-383-11
another free manual from www.searstractormanuals.com

CRAFTSMAN 4-CYCLE ENGINE
Ref. Part Ref.
N
o. N o.
P ar t Name No.
157 31668 Bag, Pre- cleaner
167
158
730512 Kit, Pre -c leaner (Incl . Nos . 156 &
168
157)
169
163
32125 Cup , Starter
164 590417 Screen , Starter c up
166 611038
Magneto ( The complete magneto
is not availableas an assembly . The
magneto
number is shown
for
reference purposes onl y. Order
component parts individually as
shown in parts list.)
MAGNETO NO . 611038
'I ht> romplt>tt• m. •..: n• 1o 1..., not
a\ .ul<.th!. '" .tn , ........ mhh
Tht• m.t~lwto numlwr ''
... huv. n feu rt·f1·rt nn· purpu-.t..,
unh ()nit r 'ompcmt nt part ...
md1\ utu.t11\ 11.. ..hn¥. n 10
-------'
Page 9
MODEL NUMBER: 143.726182
Part
No. Part Name
631454
Carburetor (Incl . No. 75)
590420
Starter Assy., Rewind
33239
Gasket Set (Incl. items marked *)
181 - 383-11
Owners Manual
* Indicates Parts Included in
Gas ket Set, Ref No . 169
Ref. Part
No. No.
Part Name
61 1038 M agneto
1 6 11037 Flyw heel
2
30661 Spring, Br eaker b ox du st cover
3 6 1094 7 Cove r, Dus t
5 30647A
Cont act Ass embl y, B reaker
6
610386 Wa s her , Term i nal
7 33356 Tab, Gr o und te rminal
8
610408
Nut , Terminal
9
29181 Sc rew & Washer , Br eaker
10 610593 Screw , Condenser
11
30560A Coil
Assy . (In cl. No. 121
12 30564
Wire , Lead
13
30548B
Condenser
14 30545 Core & Plate
15 30561B Stator Ass y. (I ncl. No s. 2 t
hru
11 , 13, 14 , 16, 17 & 19 )
16 30549 Felt, Cam
wiper
17 31311 Clip, Coil locking
19 610967
Gasket , Dust cover
181-383-11
another free manual from www.searstractormanuals.com

I
...
CARBURATOR NO. 631454
...-'1
,.... I
/ I
( I 15
14 - @ -1
I
~- - 16
--.._____/'
I
21 -~ -l
~
23 - -0.
30 _coil - 22
SA - ~
A
0/
REWIND STARTER NO. 590420
(0) -a
,'¥ ~
--...
10 \RJ
'
~) 7
:~
1:
~
r ~
"
~~ ; I·
9 -~
~~
t 9
-6
I
I
~ ~
~
f( -5
3- ~ ~ 4
..-----....._
2- ~
1- ~
11 -m
Page 10
Ref .
No.
Part
No. Part Name
631464 Carburetor
1
2
3
4
5
5A
6
7
8
9
31834 Shaft & Lever Assy., Throttle
631767 Spring, Throttle return
631036 Shutter, Throttle
650606 Screw, Rd. hd., 4-40 x 3/16
630766 Spring, Idle regulating screw
630738 Spring, Main Adjustment screw
660417 Screw , Idle regulating
31842 Shaft & Lever Assy., Choke
63JJ157A Spring , Choke return
10
11
12
31837 Shutter, Choke
"630748 Plug , Wel ch
"631027
Plug , Welch
"631021 Inle t Needle, Seat & Clip Assy .
13 631022
14 632019
15 "631024
16 631867
18 631183
21 27110
22 "31839
23 "630740
24 "631078
25 "631028
26 632164
27 631184
29 631971
30 630739
31 31840
Ref.
Part
No. No.
590420
1 590409A
2 590410
3
590411
4 590148
5
590412
6 590413A
7 590414
8
590536
9 590451A
10 590387
11 590459
(Incl. No. 13)
Clip, Inlet needle
Float, Carburetor
Shaft, Float
Bowl, Float
Washer, Felt
Gasket, Bowl-to-body
Adjustment Screw Assy. , Main
(Incl. Nos. 5A, 21, 23 & 301
"0" Ring, Adjustment screw
Screw, Idle adjustment
Gasket , Bowl-to-body
Fitting , Fuel inlet
Washer , Flat
Seal, Dust
Washer, Flat
Repair Kit (Incl. items marked "I
Part Name
Starter , Rewind
Screw, Retainer
Retainer, R.H.
Spring, Brake
Dog, Starter
Spring, R .H. dog
Pulley
Spring & Keeper Assy.
Housing Assy., Starter (Incl. No.
1)
Rope, Starter
Handle Assy ., Starter
Pin, Centering
181-383-11
another free manual from www.searstractormanuals.com

•
- - - - - -- - ---- --- ---
Sears
owner's
manual
MODEL NO. 143 . 726182
How to ORDER Repair Parts
The Model Number will be found stamped into the blower
housing (See Figure 1). Always mention
the Model Number
w
he n requesting service or repair parts f or your C ra ftsman
Eng i ne .
All parts listed herein may be orde red from a ny SE ARS,
ROE BUCK AND CO. or SIMPSON S- SEARS LIMITED
retail or catalog store. If th e pa rt s you need are not stocked
locally, your orderwill be elec tr onicallytransmitted to a Sears
Repair Parts Distribution Center
for expedited handling.
WHEN ORDERING REPAIR PARTS,
ALWAYS GIVE THE
FOLLOWI NG INFORMAT ION AS SHOWN IN THIS LIST.
1. The PART NUMBER
2. The PART DESCRIPTION
3. The MODEL NUMBER
4. The NAME
OF ITEM-ENGINE
"Your Sears merchandise has added value when you consider
that Sears has service units nationwide staffed with Sears
trained technicians . . . professional technicians specifically
trained on
Sears products, having the parts, tools and equip-
ment to in su re that we meet our pledge to you .... we service
what
we s el l."
Sold by SEARS, ROEBUCK AND CO., Chicago, IL. 60684 U.S.A.
and SIMPSONS - SEARS LIMITED, Toronto, Ontario, Canada.
181-383 -11
another free manual from www.searstractormanuals.com