Engine - Honda HHT25S Owner's Manual

ENGINE

Engine Oil Level Check
Check the engine oil level before each use, or every 10 hours if
operated continuously. Rest the trimmer on a level surface, with the
engine stopped and in an upright position.
1. Remove the filler cap/dipstick and wipe it clean.
2. Insert and remove the dipstick without screwing it into the filler
opening. Check the oil level shown on the dipstick.
3. If the oil level is low, fill to the edge of the oil filler hole with the
recommended oil (see page 15). To avoid overfilling or underfilling,
be sure the engine is in a level position, as shown.
NOTICE
Running the engine with too little or too much oil can cause engine
damage.
4. Screw in the oil filler cap/dipstick securely.
Engine Oil Change
Drain the used oil while the engine is warm. Warm oil drains quickly
and completely.
1. Place a suitable container below the engine to catch the used oil,
then remove the filler cap/dipstick and drain the used oil through
the filler opening. Allow the used oil to drain completely.
Please dispose of used motor oil in a manner that is compatible
with the environment. We suggest you take used oil in a sealed
container to your local recycling center or service station for
reclamation. Do not throw it in the trash, pour it on the ground, or
pour it down a drain.
2. With the engine in an upright position, fill to the edge of the oil filler
hole with the recommended oil.
3. Screw in the filler cap/dipstick securely.
OIL FILLER
CAP/DIPSTICK
FILLER OPENING
FILLER
OPENING
Engine Oil Recommendations
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
SAE 10W-30 is recommended for all temperatures within the
recommended operating range for these trimmers. The recommended
operating range extends from 23° ~ 104°F (-5° ~ 40°C).
The SAE oil viscosity and service classification are on the API label
on the oil container. Honda recommends that you use API service
category SJ or later.
Air Filter Check
Squeeze the air cleaner latch tabs, 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.
NOTICE
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. Clean the air filter in warm soapy water, rinse, and allow to dry
thoroughly. Or clean in nonflammable solvent and allow to dry.
2. 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.
3. Wipe dirt from the air cleaner base and cover using a moist rag. Be
careful to prevent dirt from entering the carburetor.
FILTER
AIR CLEANER
COVER
LATCH
TAB
RETAINING TABS
15