How much fork oil goes in forks on 1978 Honda 400 four?

The 1978 Honda 400 Four typically requires about 10.5 ounces (approximately 310 mL) of fork oil per leg. However, it's essential to check the specific service manual for your bike, as variations may exist based on modifications or other factors. Ensure you use the recommended viscosity, usually 10W or 15W, for optimal performance. Always measure the oil level correctly to maintain proper fork function.