Spark Plug - Craftsman 247.795950 Owner's Manual

AIR CLEANER
The air cleaner prevents damaging dirt, dust, etc.,
from entering the carburetor and being forced into the
engine and is important to engine life _ nd per-
formance.
Never run your engine without air cleaner com-
pletely assembled.
To Service Air Cleaner:
Service pre-cleaner after every 25 hours of use, or at
least once a season. Service cartridge every 130 hours
of use, or at least once a season. Service pn;-cleaner
and cartridge more often under dusty conditions.
• Loosen air cleaner cover screws. Remo-e cover
and air cleaner assembly from base. See fi jure 15.
• Remove air cleaner assembly from inside cover
and disassemble.
• To service foam pre-cleaner: Remove pre.cleaner.
Wash in liquid detergent and water. Squee_,e dry in
a clean cloth. Saturate in engine oil. Squeeze in a
clean, absorbent cloth to remove all excess oil. If
pre-cleaner is very dirty, replace it.
• To service cartridge: Clean by tapping gently on a
flat surface. If very dirty, replace. Do not oil cartridge.
NOTE: Do not use petroleum solvents (e.g. k_;rosene)
or pressurized air to clean cartridge. They wll cause
cartridge to deteriorate.
• Reassemble retainer on pre-cleaner and _:artridge
(screen side of pre-cleaner toward c_lrtridge
pleats). Place assembly into cover.
• Insert tabs on cover into slots in base and tighten
cover screws securely.
Retainer
Pre-Cleaner
Cartrid(
Cover Base
Slot
FIGURE 16.
CLEAN ENGINE
Clean engine periodically. Remove dirt and debris
with a cloth or brush. Cleaning with a forceful spray of
water is not recommended as water could contami-
nate the fuel system.
Yearly or every 25 hours, whichever occurs first,
remove the blower housing and clean the areas
shown in figure 17 to avoid overspeeding, overheating
and engine damage. Clean more often if necessary.
,_ WARNING: PERIODICALLY CLEAN MUF-
FLER AREA TO REMOVE ALL GRASS,
DIRT AND COMBUSTIBLE DEBRIS.
Clean Out
Chaff and
Dirt
FIGURE 17.
SPARK PLUG
The spark plug should be cleaned and the gap reset
to .030" at least once a season or every 50 hours of
operation. See figure 18. Spark plug replacement is
recommended at the start of each season. Refer to
engine parts list for correct spark plug type.
NOTE: Do not sandblast spark plug. Spark plug
should be cleaned by scraping or wire brushing and
washing with a commercial solvent.
.030" Feeler Gauge
FIGURE 15.
Screws
FUEL FILTER
Your engine is equipped with a replaceable in, line fuel
filter. Replace the fuel filter every season. See figure
16. Refer to engine parts list for correct repl_Lcement
filter.
FIGURE 18.
Spark Plug
MUFFLER
Do not operate the chipper-shredder without a muffler
or tamper with the exhaust system. Damaged mufflers
or spark arresters could create a fire hazard. Inspect
periodically, and replace if necessary. If your engine
is equipped with a spark arrester screen assembly,
remove every 50 hours for cleaning and inspection.
Replace if damaged.
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