Craftsman 580.768325 Operator's Manual page 15

Service Air Cleaner
Your engine will not run properly and may be
damaged if you run it with a dirty air cleaner.
Replace the air cleaner once every 200 hours of
operation or once each year, whichever comes first.
Replace more often if operating under dirty or dusty
conditions. Replacements are available at your local
Sears service center.
To replace the air cleaner, follow these steps:
• Press the latch tabs on the top of the air cleaner
cover, and remove the cover.
• Remove dirty air filter element carefully to prevent
debris from falling into carburetor. Discard.
• Clean inside of filter case, using a moist rag.
• Reinstall new air filter element and cover.
Clean / Replace Spark Plug
Check and clean the spark plug every 100 hours of
operation. Replace the spark plug yearly or every
200 hours of operation.
CAUTION
: Disconnect spark plug wire from
spark plug and keep wire away from spark plug
while servicing engine.
• Clean area around spark plug.
• Remove and inspect spark plug.
• Replace spark plug if the electrodes are worn, or if
the insulator is cracked or chipped. For
replacement use BPR6ES (NGK) or equivalent.
• Check electrode gap with wire feeler gauge and set
gap at 0.028 inches-0.031 inches
(0.70mm-0.80mm), if necessary.
• Install spark plug, tighten securely.
Carburetor
If you think your carburetor needs adjusting, see your
nearest Sears service center. Engine performance
may be affected at altitudes above 4000 feet. For
operation at higher elevations, contact your nearest
Sears service center.
Spark Arrester Service
Your engine is not factory-equipped with a spark
arrester. In some areas, it is illegal to operate an
engine without a spark arrester. Check local laws and
regulations. A spark arrestor is available from your
nearest Sears service center. You can purchase a
new spark arrester by calling 1-800-366-PART.
The spark arrester must be serviced every 100 hours
to keep it functioning as designed.
If the engine has been running, the muffler will be very
hot. Allow the muffler to cool before servicing the
spark arrestor.
• Remove the three 6 mm bolts from the muffler
protector, and remove the muffler protector.
• Remove the two special screws from the spark
arrester, and remove the spark arrester from the
muffler.
• Use a brush to remove carbon deposits from the
spark arrester screen. Be careful to avoid
damaging the screen. The spark arrester must be
free of breaks and holes. Replace the spark
arrester if it is damaged.
• Install the spark arrester and muffler protector in
the reverse order of disassembly.
15