Air Filter; Spark Plug; In=Line Fuel Filter - Husqvarna 917.384521 Owner's Manual

1. Disconnectspark plug wire from spark
plug and place wire where it cannot
come in contact with plug.
2. Remove engineoil cap; lay aside on a
clean surface.
3. Tip lawn moweron its side as shown
and drain oil into a suitable container.
Rock lawn mower back and forth to re-
move any oil trapped inside of engine.
_CAUTION: Petroleumsolvents, such
as kerosene, are not to be used to clean
cartridge.They may cause deterioration
of the cartridge. Do not oil cartridge. Do
not use pressurizedair to clean or dry
cartridge.
4. Install cartridge,then replace cover.
MUFFLER
Inspectand replace corroded muffler as it
could create a fire hazard and/or damage.
SPARK PLUG
Replacespark plug at the beginningof
each mowing season or after every 100
hours of operation,whichever occurs
first. Spark plug type and gap setting
are shown in the "PRODUCTSPECIFIC-
ATIONS"section of this manual.
4. Wipe off any spilled oil from lawn
mower or side of engine.
5. Slowly pour oil down the oil fill spout,
stopping every few ounces to check the
oil level with the dipstick.
6. Stop adding oil when you reach the
FULLmark on the dipstick. Wait a
minute to allow oil to settle.
7. Continue adding small amounts of oil,
recheckingthe dipstick until oil level
settles at FULL. DO NOT overfill, or
engine will smoke heavily from the muf-
fler on startup.
8. Always be sure to retighten oil dipstick
before starting engine.
9. Reconnectspark plug wire to plug.
AIR FILTER
Your engine will not run properly and may
be damaged by using a dirty air filter.
Replace the air filter every 100 hours of
operation or every season, whichever oc-
curs first. Service air cleaner more often
under dusty conditions.
TO CLEAN AIR FILTER
1. Remove cover.
2. Carefully remove cartridge.
3. Clean by gently tapping on a flat sur-
face. If very dirty, replace cartridge.
Cartridg X Slot
IN=LINE FUEL FILTER
The fuel filter should be replaced once
each season. If fuel filter becomes
clogged, obstructing fuel flow to carbu-
retor, replacement is required.
1. With engine cool, remove filter and
plug fuel line sections.
2. Place newfuel filter in position in fuel line
with arrow pointing towards carburetor.
3. Be sure there are no fuel line leaks
and clamps are properly positioned.
4. Immediatelywipe up any spilled gasoline.
Clamp, Clamp
Back plate
15
Fuel
Fill
CLEANING
IMPORTANT: For best performance,
keep mower housing free of built-grass
and trash. Clean the underside of your
mower after each use.
&CAUTION" Disconnect spark plug wire
from spark plug and place wire where it
cannot come in contact with spark plug.
, Clean the underside of your lawn
mower 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 life.
, Keep finished surfaces and wheels free
of all gasoline, oil, etc.
, We do not recommend using a garden
hose to clean lawn mower unless the
electrical system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in short-
ened engine life.