Husqvarna HU775H Operator's Manual page 16

TO CHANGE ENGINE OIL
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/dipstick; 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 (Figure 23).
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 FULL mark on the
dipstick. Wait a minute to allow oil to settle.
7. Continue adding small amounts of oil, rechecking the
dipstick until oil level settles at FULL. DO NOT overfill,
or engine will smoke heavily from the muffler on startup.
8. Always be sure to retighten oil dipstick before starting
engine.
9. Re con nect spark plug wire to spark plug.
Figure 23
1. Oil fill cap/dipstick
2. Container
MAINTENANCE
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AIR FILTER
Your engine will not run properly using a dirty air filter.
Replace paper cartridge every 100 hours of operation or
every season, which ev er occurs first. Service air cleaner
more often under dusty conditions.
NOTE: The air cleaner system uses a pleated filter with
an optional pre-cleaner. The pre-cleaner can be washed
and reused.
1. Loosen the fastener that holds the cover. Remove the
cover (Figure 24).
2. Remove the pre-cleaner and the filter.
3. To loosen debris, gently tap the filter on a hard surface.
If the filter is excessively dirty, replace with a new filter.
4. Wash the pre-cleaner in liquid detergent and water.
Then allow it to thoroughly air dry. Do not oil the pre-
cleaner.
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.
5. Assemble the dry pre-cleaner to the filter.
6. Install the filter and pre-cleaner into the base. Make
sure filter fits securely in the base.
7. Install air filter cover and secure with fastener. Make
sure the fastener is tight.
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4
1. Fastener
2. Cover
3. Filter
4. Base
5. Pre-cleaner
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3
Figure 24
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