Husqvarna 5521CM Lawn Mower User Manual


 
11
MAINTENANCE
FIG. 11
CONTAINER
TO CHANGE ENGINE OIL (See Figs. 11 & 12)
NOTE: Before tipping lawn mower to drain oil, empty 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 plug.
2. Remove oil fi ll cap/dipstick; lay aside on a clean sur-
face.
3. Tip lawn mower on its side as shown and drain oil into
a suitable container. Rock lawn mower back and forth
to remove any oil trapped inside of engine.
4. Wipe off any spilled oil from lawn mower or side of
engine.
5. Fill engine with oil. Slowly pour oil down the oil fi ll spout
into the engine.
6. Wait one minute to allow oil to settle. Use guage on oil
ll cap/dipstick for checking level. Insert dipstick into
the tube and rest the oil fi ll cap on the tube. DO NOT
thread the cap into the tube when taking reading.
7. Continue adding small amounts of oil and rechecking
the dipstick until it reads full. DO NOT overfi ll, or engine
will smoke on startup.
8. Always be sure to retighten oil fi ll cap/dipstick before
starting engine.
9. Reconnect spark plug wire to spark plug.
TO CLEAN AIR FILTER
1. Remove cover.
2. Carefully remove cartridge.
3. Clean by gently tapping on a fl at surface. If very dirty,
replace cartridge.
CAUTION: Petroleum solvents, such as
ker o sene, are not to be used to clean
car tridge. They may cause de te ri o ra tion
of the cartridge. Do not oil car tridge.
Do not use pres sur ized air to clean or
dry car tridge.
4. Install cartridge, then replace cover.
OIL FILL CAP /
DIPSTICK
LOWER
MARK
UPPER
MARK
FIG. 12
AIR FILTER (See Fig. 13)
Your engine will not run properly and may be damaged by
using a dirty air fi lter. Replace the air fi lter every 100 hours of
operation or every season, whichever occurs fi rst. Service
air cleaner more often under dusty conditions.
MUFFLER
Inspect and replace corroded muffl er as it could create a
re hazard and/or damage.
SPARK PLUG
Replace spark plug at the beginning of each mowing season
or after every 100 hours of operation, whichever occurs
rst. Spark plug type and gap setting are shown in the
“PROD UCT SPEC I FI CA TIONS” section of this manual.
CLEANING
IMPORTANT: FOR BEST PERFORMANCE, KEEP MOWER
HOUSING FREE OF BUILT-UP 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 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 fi nished 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, muffl er, air
lter and carburetor are covered to keep water out.
Water in engine can result in shortened engine life.
FIG. 13
TAB
CARTRIDGE
FILTER COVER
SLOT