Craftsman 143.996524 Operator's Manual page 5

MAINTENANCE
(Continued)
SPARK PLUG (see Figure7):
This spark ignitionsystem meets all requiraments of the Canadi-
an Interference-Causing Equipment Regulations. This engine
complies with all currant Australian and New Zealand limitations
regarding electromagnetic interference.
Check spark plug yearly or every 100 operating hours.
A. Clean area around spark plug.
B. Remove and inspect spark plug.
C. Replace spark plug if electrodes are pitted, bumed or
porcelainiscracked. For replacement use Champion RJ19LM,
or equivalent.
NOTE: A resistor spark plug must be used for replacement.
D. Check electrodes gap with wire fouler gauge and set gap at
.030 if necessary.
E. Install spark plug, tighten securely.
ELECTRODES
_CELAIN
.O3OGAP
Figure 7
(_) COOLING SYSTEM:
IMPORTANT: Frequently remove any grass clippings, dirt and
debris from cooling fins, air intake screen and levers and linkage
(see Figure 1). Thiswill help ensure adequate coolingand correct
engine speed.
®
,_ CHECK ENGINE AND EQUIPMENTOFTEN FOR LOOSE NUTS, I
BOLTS AND ATTACHMENTS, AND KEEP THESE ITEMS
I TIGHTENED.
ADJUSTMENTS
STORAGE
_hk EVER STORE ENGINE WITH FUELIN TANKINDOORS 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:
(_) DRAIN FUEL SYSTEM:
A. Remove all gasoline from carburetor and fuel tank to prevent
gum deposits from forming on these parts and causing possi-
ble malfunctionof engine.
_k DRAIN FUEL INTO APPROVED CONTAINER OUTDOORS,
AWAY FROM OPEN FLAME. BE SURE ENGINE IS COOL
DO NOT SMOKE.
B. Runengine untilfueltank isempty andengine stopsdue tolack
of fuel.
NOTE: Fuel stabilizer (such as STA-BIL) is an acceptable
altemative in minimizing the formation of fuel gum deposits
duringstorage. Add stabilizerto gasoline in fuel tank or storage
container. Always follow mix ratio found on stabilizer contain-
er. 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 lastthree (3) months.
Sou "CHANGE OIL" instructionsin =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 times.
_1= VOID SPRAY FROM SPARK PLUG HOLE WHEN
CRANKING ENGINE OVER SLOWLY.
D. Replace spark plug.
(_
CLEAN ENGINE:
Remove any clippings, dirt, or chaff from exterior of engine.
GENERAL
DO NOT MAKE UNNECESSARY ADJUSTMENTS. FACTORY SET-
TINGS ARE SATISFACTORY FOR MOST APPLICATIONS AND
CONDITIONS. IF ADJUSTMENTS ARE NEEDED, PROCEED AS
FOLLOWS:
(D
CARBURETOR
If you think your carburetor needs adjusting, sou your nearest
SEARS, ROEBUCK AND CO. (OR SEARS CANADA 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
1
_ EVER TAMPER WITH ENGINE GOVERNOR WHICH IS FAC- |
TORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING
/
ENGINE ABOVE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS.
CHANGING OF ENGINE-GOVERNED SPEED WILL VOID EN-
GINE WARRANTY.
Page 4
Justas your automobile needs professionalmechanical maintenance
from time to time, sodoes yourCraftsman 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 youdy 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.
181-1198-11