Air Filter; Oil Change - Honda HHT25S Owner's Manual

Oil Change

Change the oil after the first 10 hours of use. Thereafter, change the
oil every 6 months or 50 hours of use. Change the oil more often
when used in dusty areas.
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.
2. Remove the oil filler cap/dipstick.
3. Tip the trimmer to drain the used oil through the oil 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.
4. With the engine in an upright position, fill with the recommended
oil to the edge of the oil filler hole. Do not overfill.
Refill amount: HHT25S, 2.7 fl oz (80 cc)
HHT35S, 3.4 fl oz (100 cc)
5. Screw in the filler cap/dipstick securely.
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
general use. Other viscosities
shown in the chart may be used
when the average temperature in
your area is within the
recommended range.
The SAE oil viscosity and service category are in the API label on the
oil container. Honda recommends that you use API service category
SJ or later oil.
NOTICE
Using nondetergent oil can shorten the engine's service life, and using
2-stroke oil can damage the engine.
16
FILLER
OPENING
5W-30
OUTSIDE AIR TEMPERATURE

Air Filter

Check the air filter after each use. Thereafter, clean the filter every 25
hours of use. Clean the filter more often when used in dusty areas.
Replace the filter every 2 years or 150 hours of use.
A properly maintained air filter will help prevent dirt from entering your
engine. Dirt entering the carburetor can be drawn into small passages
in the carburetor and cause premature engine wear. These small
passages can become blocked, causing starting or running problems.
We recommend the use of a Honda Genuine air filter to ensure it
seals and performs as designed. Using a non-Honda air filter can
result in dirt bypassing the filter, causing damage to the engine or fuel
system.
NOTICE
Operating the engine without an air filter, or with a dry or damaged air
filter, or with an improperly installed air filter cover will allow dirt to
enter the engine causing rapid engine wear. Make sure the air filter is
properly installed and flush with the air filter base before installing the
air filter cover. This type of damage is not covered by the
DISTRIBUTOR'S LIMITED WARRANTY
Inspection
1. Move the choke lever to the CLOSED () position to prevent dirt
from entering the engine.
2. Squeeze together the upper tabs at the top of the air filter cover
to release it from its catch, then flip the cover down to remove it.
FILTER
AIR CLEANER
COVER
LATCH
TAB
3. Check the foam air filter to be sure it is clean, properly oiled, and
in good condition.
4. If the filter is dirty, clean it as described under Cleaning on
page 17. Replace the air filter element if it is damaged.
5. Align the air filter with the air filter base. Reinstall the air filter by
locating the three base pegs into the three air filter holes. Slide
the air filter over the pegs until it is flush with the air filter base.
6. Reinstall the air filter cover by hooking the two lower tabs on the
bottom of the cover and snapping the upper tabs into place.
(page 30).
RETAINING TABS