Honda GC135 Owner's Manual page 29

SERVICING YOUR ENGINE
3.
With the engine in a level position, fill to the outer edge of the oil
filler hole with the recommended oil (see page 28).
Engine
oil
capacity: 0.61 US qt (0.58
a ,
0.51 Imp qt)
Running the engine with a low oil level can cause engine damage.
The Oil Alert@ system (applicable engine types) will automatically
stop the engine before the oil level falls below the safe limit.
However, to avoid the inconvenience of an unexpected shutdown,
fill to the upper limit, and check the oil level regularly.
4. Screw in the oii fiiler capidipstick securely.
OIL FILLER CAP/DIPSTICK
\
+Y
LOWER
LIMIT
27