Yamaha Oil Gauge Complete YA2-63636-03-01. Overview. The Yamaha Oil Gauge Complete YA2-63636-03-01 is a genuine original equipment manufacturer component designed to accurately measure and monitor the oil level within your engine system. Maintaining the correct oil level is essential for proper lubrication, helping protect internal engine components and ensuring smooth, reliable operation.. A properly functioning oil gauge allows operators to quickly check oil levels and maintain optimal lubrica