MODEL | TORQUE SPEC | SOURCE |
RD125 / RD200 | Cylinder head nuts torque: 86.8 ~ 130.2 in-lbs (1.0 ~ 1.5 m-kg) | Yamaha Service Manual: RD125/RD200 1975-76 (LIT-11616-10-12) |
DS7 / R5 / RD250 / RD350 | Cylinder head nuts should be loosened and tightened in a "cross" pattern and in progressive stages with final torque of 180 in-lbs. (2 m-kg). | Yamaha Service Manual: DS7/R5/RD250/RD350 (SVM-360-0800-20) |
RD250 / RD350 | Cylinder head nuts should be loosened and tightened in a "cross" pattern and in progressive stages with final torque of 180 in-lbs. (2 m-kg). | Yamaha Service Manual: RD250/RD350 1972-75 (LIT-11613-61-02) |
RD400 | Cylinder head nut torque: 1.9 ~ 2.1 m-kg (13.7 ~ 15.2 ft-lbs.) | Yamaha Service Manual: RD400 1976-79 (LIT-11616-RD-40) |
RD400F | Cylinder head nut torque: First: 1.0 m-kg (7.2 ft-lbs.) Final: 2.0 m-kg (14.5 ft-lbs.) | Yamaha Service Manual: RD400F Supplementary (LIT-11616-01-24) |