#Model-30mhga. Mercury 30hp FourStroke outboards make light work of your biggest adventures. Quick and compact. Reliable and durable. Efficient and easy to own. FourStroke outboards bring big capabilities to small vessels.. Exceptionally Smooth and Quiet. We balanced the powerhead to make it smoother and crafted soft-rubber mounts that isolate vibration and direct it away. Whether you're fishing in a quiet cove or having a conversation, you'll enjoy every minute on the water.. Easy to Maintain.