Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 40Get this manual

BF50BF5,A CHARGING AND LIGHTING COILS (Optional part)
Measure the resistance between each terminal of the lamp coil wires

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives