What is the correct torque spec for the head and jug on a 1987 Yamaha YFM200 Moto4?

The correct torque specification for the cylinder head and jug on a 1987 Yamaha YFM200 Moto4 is typically around 20 ft-lbs (27 Nm). It is essential to follow the proper torque sequence and to ensure that the bolts are tightened in multiple passes for even distribution. Always consult the service manual for your specific model for the most accurate information.