Air Filter; Muffler; Spark Plug; Cleaning - Craftsman 917.773422 Owner's Manual

TO CHANGE ENGINE OIL
NOTE: Before tipping trimmer to drain
oil. drain fuel tank by running engine
until fuel tank is empty.
1. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Remove engine oil cap; lay aside on a
clean surface.
3. Tip trimmer on its side as shown and
drain oil into a suitable container.
Rock trimmer back and forth to
remove any oil trapped inside of
engine.
4. Wipe off any spilled oil from trimmer
and side of engine.
5. Fill engine with oil (See "ADD OIL" in
the Operation section of this manual).
6. Replace engine oil cap.
7. Reconnect spark plug wire to spark
plug.
AIR FILTER
Yourengine will net run prepedy and may
be damaged by using a dirty air filter.
Replace the air filter every 100 hours of
operation or every season, whichever
occursfirst. Service air cleaner more
often under dusty conditions. Do not
wash air filter.
TO CHANGE AIR FILTER
1. Remove the air filter by turning
clockwise to the stop and pull away
from collar.
2. Remove filter from inside of cover.
3. Clean the inside of the cover and the
collar to remove any dirt accumula-
tion.
4. Insert new filter into cover.
5. Put air filter cover and filter into collar
aligning the tab with the slot.
6. Push in on cover and turn counter-
clockwise to tighten.
Turn
Collar clockwise
to remove
Slot
Air tilter
Tab
Air tilter cover
Turn
counterclockwise
to tighten
MUFFLER
Inspect and replace corroded muffler as
it could create a fire hazard and/or
damage.
SPARK PLUG
Replace spark plugs at the beginning of
each mowing season or after every 100
hours of operation, whichever occurs first.
Spark plug type and gap setting are
shown in "PRODUCT SPECIFICATIONS"
in Maintenance section of this manual.
CLEANING
IMPORTANT: For best performance,
keep trimmer free of built-up grass and
trash. Clean the underside of your
trimmer after each use.
_CAUTION: Disconnect spark plug wire
from spark plug and place wire where it
cannot come in contact with the spark
plug.
• Turn trimmer on its side. Make sure air
filter and carburetor are up. Clean the
underside of your trimmer by scraping
to remove build-up of grass and trash.
• Clean engine often to keep trash from
accumulating. A clogged engine runs
hotter and shortens engine fife.
• Keep finished surfaces and wheels
free of all gasoline, oil, etc.
• We do not recommend using a garden
hose to clean trimmer unless the
electrical system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in
shortened engine life.
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