• May 13, 2026 2010 Honda Outboard Motor Bf40d Bf50d S 303 on enjoying the boating experience FAQs 1 What is the difference between the BF40D and the BF50D The primary difference lies in horsepower the BF50D offers 10 more horsepower than the BF40D providing greater pulling power and performance for heavier boats 2 How often should I change the oil in my BY Willy Towne