Engine Oil Recommendations; Air Filter Inspection; Air Filter Cleaning - Honda UMK431 Owner's Manual

SERVICING YOUR HONDA TRIMMER
Engine Oil Recommendations
Oil is a major factor affecting performance and service life. Use 4-stroke automotive detergent oil.
SAE 1 OW-30 is recommended for all temperatures within the recommended operating range for these
trimmers. The recommended operating range extends from 23°F (-5°C) to 104°F (40°C).
The SAE oil viscosity and service classification are in the API label on the oil container. Honda
recommends that you use API SERVICE category SJ oil.
Air Filter Inspection
Press the air cleaner latch tab, and remove the air cleaner cover. Check the filter to be sure it is clean
and in good condition.
If the filter is dirty, clean it as described under Air Filter Cleaning. Replace the filter if it is damaged.
Reinstall the filter and air cleaner cover.
Operating the engine without an air filter, or with a damaged air filter, will allow dirt to enter the engine,
causing rapid engine wear. This type of damage is not covered by the Distributor's Limited Warranty.
Air Filter Cleaning
A dirty air filter will restrict air flow to the
carburetor, reducing engine performance. If you
operate the engine in very dusty areas, clean the
air filter more often than specified in the
MAINTENANCE SCHEDULE.
1.
2.
3.
Clean the air filter in warm soapy water, rinse,
and allow to dry thoroughly. Or clean in
nonflammable solvent and allow to dry.
Dip the air filter in clean engine oil, then
squeeze out all excess oil. The engine will
smoke when started if too much oil is left in the
filter.
Wipe dirt from the air cleaner base and cover,
using a moist rag. Be careful to prevent dirt
from entering the carburetor.
FILTER
LATCH
I
TAB
I
~ETAINING TABS
AIR CLEANER
COVER
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