How to simply "burp" your Rotax engine so to check oil level.
Rotate prop to "top dead center" of one of your pistons. Leave it there for a few seconds, then rotate again until you reach the next "top dead center". Continue until you hear the gurgle of the oil from the tank. Check oil level immediately. Remember, overfilling is always better than underfilling. Any excess oil will flow through the overflow tube and will exit the aircraft. Also, try to keep the oil at the top line of the dip stick.