Maintenance; Muffler/Spark Plug; Water Washout Feature - Husqvarna HU550FH Operator's Manual

CAUTION: Pe tro leum 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.
MUFFLER
Inspect and replace corroded muffl er as it could create a
fi 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
fi 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 / wheels free of gasoline, oil,
etc.
• We do not recommend using a garden hose to clean
the outside of your lawn mower unless the electrical
system, muffl er, air fi lter and carburetor are covered to
keep water out. Water in engine can result in shortened
engine life.
CLEAN UNDER DRIVE COVER
Clean under drive cover at least twice a season. Scrape
underside of cover with putty knife or similar tool to remove
any build-up of trash or grass on underside of drive cover.

MAINTENANCE

WATER WASHOUT FEATURE (See Fig. 16)
Your lawn mower is equipped with a fi tting that allows quick
and easy cleaning of the underside of the housing. To use
this feature, proceed as follows:
1. Move lawn mower to an area of cut grass or another
NOTE: Water, grass and other debris will drain from beneath
the mower housing during the washout process.
2. Remove grass catcher and discharge chute assembly
3. Close mulcher door (if equipped).
4. Connect a garden hose to the fi tting where shown.
IMPORTANT: BE SURE THE GARDEN HOSE IS NOT ROUTED
UNDER THE LAWN MOWER HOUSING OR ENTANGLED IN
THE WHEELS.
5. Turn on water supply and check for leaks at the fi t-
If no leaks are present, start engine (as described in the
Operation section of this manual) and let engine run until
the underside of the lawn mower is clean.
6. Shut off the engine.
7. Shut off water supply and remove hose from fi tting.
8. Start engine (as described in the Operation section
14
hard surface.
from lawn mower.
ting.
WARNING: Do not engage the drive
system during the washout process.
CAUTION: Do not remove hose from
fi tting while engine is running. Water
in engine can result in shortened en-
gine life.
of this manual) and let engine run for a full minute to
remove excess water from mower.
FIG. 16
HOSE
FITTING