Spark Plug; Change Engine Oil; To Clean Air Filter - Husqvarna 7021P Operator's Manual

Change the oil after every 25 hours of operation or at least
once a year if the lawn mower is not used for 25 hours in
one year.
Check the crankcase oil level before starting the engine
and after each five (5) hours of continuous use. Tighten oil
plug securely each time you check the oil level.
TO CHANGE ENGINE OIL (See Figs. 13 & 14)
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 engine oil cap; lay aside on a clean surface.
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 mower or side of engine.
5. Fill engine with oil. The engine oil capacity is 18.5 oz.
If oil is not com plete ly drained from engine, you may
not need the entire container of a 20 oz. bottle of oil.
Slowly pour 3/4 of the oil from the container down the
oil fill spout into the engine.
OIL FILL CAP /
DIPSTICK
UPPER
MARK
LOWER
MARK
6. Wait one minute to allow oil to settle. Use guage on
oil fill cap/dipstick for checking level. Insert dipstick
into the tube and rest the oil fill cap on the tube. DO
NOT thread the cap into the tube when taking reading.
MAINTENANCE
CONTAINER
FIG. 13
FIG. 14
7. Continue adding small amounts of oil and recheck-
ing the dipstick until it reads full. DO NOT overfill, or
engine will smoke on startup.
8. Always be sure retighten dipstick before starting engine.
9. Re con nect spark plug wire to spark plug.
AIR FILTER (See Fig. 15)
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 occurs 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 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.
CARTRIDIGE
FILTER COVER
MUFFLER
Inspect and replace corroded muffler as it could create a
fire 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 first. Spark plug type and gap setting are shown in
the "PROD UCT SPEC I FI CA TIONS" section of this manual.
12
SLOT
TAB
FIG. 15