Sears 143.004012 Operator's Manual page 5

6.0 horsepower 10 cubic inch (163 cc) displacement
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MAINTENANCE
(Continued)
(_) SPARK
PLUG
(see Figure 8):
This spark ignition system meets all requirements of the Canadian
Interference-Causing
Equipment
Regulations.
This engine
complies with all current Australian and New Zealand limitations
regarding electromagnetic
interference.
Check spark plug yearly or every tO0 operating hours.
A.
B.
C.
g.
E.
Clean area around spark plug.
Remove and inspect spark plug.
Replace
spark
plug if electrodes
are pitted,
burned or
porcelain
is cracked.
For replacement
use Champion
RJ19LM.
NOTE: A resistor spark plug must be used for replacement.
Check electrodes gap with wire feeler gauge and set gap at
,030 it necessary.
Install spark plug, tighten securely.
ELECTRODE, €
.030 GAP
PORCELAIN
Figure 8
(_) COOLING
SYSTEM:
IMPORTANT:
Fraquently remove any grass clippings, dirt and
debris from cooling fins, air intake screen and levers and linkage
(see Figure 1).
This will help ensure adequate cooling and
correct engine speed,
6(_ CHECK
ENGINE
AND EQUIPMENT
OFTEN
FOR LOOSE 1
,_
NUTS,
BOLTS
AND ATTACHMENTS,
AND KEEP THESE
IalTEMS
TIGHTENED.
A
ADJUSTMENTS
DO NOT MAKE UNNECESSARY
ADJUSTMENTS.
FACTORY
SETTINGS
ARE SATISFACTORY
FOR MOST APPLICATIONS
AND CONDITIONS.
IF ADJUSTMENTS
ARE NEEDED,
PROCEED
AS FOLLOWS:
CARBURETOR
If you think your carburetor needs adjusting, see your nearest
SEARS, ROEBUCK
AND CO. (OR SEARS
CANADA,
INC.)
SERVICE CENTER.
Engine performance
should not be affected
at altitudes up to 7,000 feet. For operation at higher elevations,
contact your nearest SEARS, ROEBUCK AND CO. (OR SEARS
CANADA, INC.) SERVICE
CENTER.
_) ENGINE
SPEED
_,
NEVER
TAMPER
WITH
ENGINE
GOVERNOR
WHICH
IS
FACTORY
SET
FOR
PROPER
ENGINE
SPEED.
OVERSPEEDING
ENGINE ABOVE FACTORY NIGH SPEED
SETrlNG
CAN BE DANGEROUS.
CHANGING
OF ENGINE-GOVERNED
SPEED
WILL VOID
ENGINE WARRANTY.
STORAGE
A
NEVER STORE ENGINE WITH FUEL IN TANK INDOORS OR
IN ENCLOSED,
POORLY
VENTILATED
AREAS,
WHERE
FUEL FUMES MAY REACH AN OPEN FLAME, SPARK OR
PILOT
LIGHT
AS ON A FURNACE,
WATER
HEATER,
CLOTHES
DRYER OR OTHER GAS APPLIANCE.
IF ENGINE
IS TO BE UNUSED
FOR 30 DAYS OR MORE,
PREPARE AS FOLLOWS:
Q
DRAIN
FUEL
SYSTEM:
A.
Remove
all gasoline
from carburetor and fuel tank to
prevent
gum deposits
from forming
on these
parts and
causing
possible malfunction
of engine.
_IL
DRAIN FUEL INTO APPROVED
CONTAINER
OUTDOORS,
AWAY FROM OPEN FLAME.
BE SURE ENGINE IS COOL.
l
DO NOT SMOKE.
B.
Run engine until fuel tank is empty and engine stops due
to lack of fuel.
NOTE:
If "Gasohol"
has been used, complete
above
instructions and then put 1/2 pint of unleaded
gasoline
into
fuel
tank
and
repeat
above
instructions.
NOTE:
Fuel stabilizer (such as STA-BIL) is an acceptable
alternative in minimizing the formation of fuel gum
deposits during storage. Add stabilizer to gasoline
in fuel tank or storage container. Always follow mix
ratio found on stabilizer container. Run engine at
least 10 minutes after adding stabilizer to allow it to
reach carburetor,
_)
CHANGE
OIL:
Change oil if it has not been changed in the last three (3)
months, See =CHANGE OIL" instructions in "MAINTENANCE"
section on Page 3,
(_
OIL CYLINDER
BORE:
A.
Remove spark plug and pour one (1) ounce (30 ml) of
engine oil into spark plug hole.
B.
Cover spark plug hole with a rag.
C.
Crank engine over. slowly, several tim¢_,
,_
AVOID
SPRAY
FROM
SPARK
PLUG
HOLE
WHEN
CRANKING
ENGINE OVER SLOWLY,
O.
Replace spark plug.
(_
CLEAN
ENGINE:
Remove any clippings, dirt, or chaff from exterior of engine.
GENERAL
Just as your automobile needs professional
mechanical maintenance
from time to time, so does your Craftsman engine. Replacement 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
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.

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