Sears 143.999 Operator's Manual page 5

MAIi TENANCE (Continued)
(_)
COOLING SYSTEM
IMPORTANT: Frequently remove any grass clippings, dirt and
debris from cooling fins, air intake screen and levers and linkage
(see Figure 6). This will help ensure adequate cooling and
correct engine speed.
AIR INTAKE SCREEN_
COOLING FINS
/
LEVERS AND (IF SO
LINKAGE EQUIPPED)
Figure 6
6(_ CHECK ENGINE AND EQUIPMENT OFTEN FOR LOOSE
,_kl NUTS, BOLTS AND ATTACHMENTS AND KEEP THESE
ITEMS TIGHTENED.
ADJUSTMENTS
DO NOT MAKE UNNECESSARY ADJUSTMENTS. FACTORY
SE'I-I'INGS ARE SATISFACTORY FOR MOST APPLICATIONS
AND CONDITIONS. IF ADJUSTMENTS ARE NEEDED, PRO-
CEED AS FOLLOWS:
(_) CARBURETOR
(see Figure 7):
If you think your carbumtor needs adjusting, see your neam st
SEARS, ROEBUCK AND CO. (OR SEARS CANADA, INC.)
SERVICE CENTER. Engine performance should not be af-
fected at altitudes up to 7,000 feat. For operation at higher
elevations, contact your nearest SEARS, ROEBUCK AND CO.
(_(OR SEARS CANADA, INC.) SERVICE CENTER.
ENGINE SPEED:
A NEVER TAMPER WITH ENGINE GOVERNOR WHICH IS FAC- 1
TORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING I
ENGINE ABOVE FACTORY HIGH SPEED SETTING CAN BE I
DANGEROUS. t
CHANGING OF ENGINE-GOVERNED SPEED WILL VOID
ENG NE WARRANTY.
Figure 7
STORAGE
_k NEVER STORE ENGINE WITH FUEL IN TANK INDOORS OR I
IN ENCLOSED, POORLY VENTILATED AREASWHERE FUEL I
FUMES MAY REACH AN OPEN FLAME, SPARK OR PILOT I
LIGHT AS ON A FURNACE, WATER HEATER, CLOTHES
DRYER OR OTHER GAS APPL ANCE.
IF ENGINE IS TO BE UNUSED FOR 30 DAYS FOR MORE, PRE-
PARE AS FOLLOWS:
_) DRAIN FUEL SYSTEM:
A
I
Remove all gasoline from carburetor and fuel tank to prevent
gum deposits from forming on these parts and causing possible
malfunction of engine.
DRAIN FUEL INTO APPROVED CONTAINER OUTDOORS,
AWAY FROM OPEN FLAME. BE SURE ENGINE IS COOL. DO
NOT SMOKE.
Run engine until fuel tank is empty and engine stops due to lack
of fuel.
NOTE:
NOTE:
If "Gasohol"has been used, completeabove instruc-
tionsand thenput 1/2 pintof unleadedgasolineintofuel
tank and repeat above instructions.
Fuel stabilizer (such as STA-BIL) is an acceptable
altamative in minimizing the formationof fuel gum
deposits dudngstorage. Add stabilizerto gasolinein
fuel tank or storage container. Alwaysfollowmix ratio
found on stabilizer container. Run engine at least 10
minutes after adding stabilizer to allow it to rach
carburetor.
(_ CHANGE OIL:
Change oilifithas notbeen changedinthe lastthree (3) months.
Sea "CHANGE OIL" instructions in "'MAINTENANCE"section.
(_) OIL CYLINDER BORE:
A. Remove spark plugand pourone (1) ounce(30 ml)ofclean
engine oil into spark plug hole.
B. Cover spark plug hole with a rag.
C. Crank engine over, slowly, several times.
_k AVOID SPRAY FROM SPARK PLUG HOLE WHEN
I CRANKING ENGINEOVER SLOWLY.
D. Installspark plug. Do not connectspark plugwire.
(_) CLEAN ENGINE:
Remove any clippings,dirt, or chaff from extedorof engine.
GENERAL
Just as your automobile needs professional mechanical mainta- '
nanca from time to time, so does your Craftsman engine. Replace-
ment of the spark plug and air cleaner is made necessary by
NORMAL use. Professional Air-Cooled Engine Service is as close as
your nearest Sears Roebuck and Co. (or Sears Canada, Inc.) Service
Center.
A yearly check-up or tune-up by Sears is a good idea to avoid
breakdownsor delay.., do it at the end of the season,then you're
ready for the next. We even prepare it for storagefor you.
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