Honda WX15T Owner's Manual page 35

4.With the engine in a level position, fill with the recommended oil to
the upper limit of the oil filler neck (see page 34).
Add the engine oil slowly and do not let it overflow, as the engine oil
tank capacity is small.
Engine oil capacity: 8 oz (0.25 L)
5.Reinstall the oil filler cap securely.
OIL FILLER CAP
UPPER LIMIT
SERVICING YOUR PUMP
33