Craftsman 536.797420 Owner's Manual page 12

LUBRICATION
• After each 25 hours of use of your edger/
trimmer, apply light machine oil to all
moving parts, particularly the wheels.
• The oil in the engine crankcase must be
changed after the first 2 hours of opera-
tion and after each 25 hours of use there-
after. See OIL RECOMMENDATIONS in
OPERATIONAL sectional in this manual
TO CHANGE OIL
• Disconnect the spark plug wire from the
spark plug.
• Remove the oil drain plug as shown be-
low and drain the oil into a flat pan.
• After draining all the oil, reinstall the oil
drain plug securely.
NOTE; The oil will drain mare freely when
the engine is warm.
VIEW FROM REAR
il Drain Plug
AIR CLEANER
Replace the filter once a year; more often
under dusty or dirty conditions. DO NOT
attempt to clean or oil the air filter.
To instaif a new air filter, do the following:
• Disconnect the spark plug wire from the
spark plug.
• Turn the cover as shown below to the left
counterclockwise and remove the cover
and the air filter from the flange.
• Discard the air filter.
• Clean the cover and the flange thor+
oughly,
• Insert the new air filter into the cover.
• Push the cover firmly against the flange
and turn it to the right clockwise as far as
it will go as shown in figure below. Be
sure the retainers are locked around the
flange,
• Reconnect the spark plug wire.
• Flange
Slot
Tab
Turn cover to the right
(clockwise) ot install
Z_ CAUTION: Never run the engine
without the air cleaner element installed. A
defective air cleaner can result in loss of
engine power and can cause excessive
wear or damage to the engine components
if dirt or dust is permitted to enter the
engine through the carburetor. A damaged
air cleaner, or one that is clogged with dust
or dirt should be replaced immediately.
SPARK PLUG
Clean the spark plug and reset the gap
periodically. Before removing spark plug,
clean the area around its base to prevent
dirt from entering into the engine, Replace
the spark plug if the electrodes are pitted or
burned or if the porcelain is cracked. Clean
the spark plug by carefully scraping the
electrodes with a knife or screwdriver (do
not sand blast or use a wire brush). Be sure
the spark plug is clean and free of foreign
material. Check the electrodes gap with a
wire feeler gauge and reset to .030 if
necessary. If a new spark plug is needed,
refer to the Engine manual for the proper
replacement spark plug.
Before reinstalling the spark plug, coat the
threads lightly with graphite or light oil to
insure easy removal. Tighten the spark plug
firmly into the engine. If a torque wrench is
available, torque the spark plug to 15 foot-
pounds.
/'_ CAUTION: Always stop the engine
and disconnect the spark plug wire before
making any repairs to the edgerttrimmer.
12