RIEJU AVENTURA 500 Owner's Manual page 82

If the oil level is higher than the upper scale
mark 2, some oil needs to be drained.
If the oil level is below the lower scale mark 3, a
certain amount of oil needs to be injected.
Whether the oil is drained or injected, the oil le-
vel shall be rechecked according to the above
oil level inspection method after the operation is
completed.
Method of draining oil:
If the oil level is too high, use a socket wrench to
remove the oil drain bolt (1) located under the left
side of the engine.
After draining an appropriate amount of engine oil,
reset and lock the oil screw 1.
The engine will be damaged if the oil level is too low. Similarly, the engine will be damaged if the oil level is too
high.
Make sure that the oil level is at the correct position.
82 aventura 500 euro 5