Honda HRZ216TDA Harmony II Owner's Manual page 37

Engine Oil Change
Drain the used oil while the engine is warm. Warm oil drains quickly
and completely.
1. Turn the fuel valve to OFF to reduce the possibility of fuel leakage
(page 21).
2. Wipe the oil filler area clean, then remove the oil filler cap/dipstick.
3. Place a suitable container next to
the mower to catch the used oil,
then tilt the mower on its right side.
The used oil will drain through the
filler neck. Allow the oil to drain
completely.
NOTICE
Improper disposal of engine oil can be harmful to the environment.
If you change your own oil, please dispose of the used oil properly.
Put it in a sealed container, and take it to a recycling center. Do not
discard it in a trash bin or dump it on the ground.
4. Fill with the recommended oil. Do
not overfill. Allow a couple of
minutes for the oil to settle in the
engine, then measure the oil level
as shown on page 34.
NOTICE
Using nondetergent oil can shorten
the engine's service life, and using
2-stroke oil can damage the engine.
SERVICING YOUR MOWER
35