Yamaha Service Data

[SoCal250]

1979 Yamaha RD400F (CAN) "3J7" Service Data

[SoCal250]

Yamaha TA125 Service Data (road race model)

[SoCal250]

Yamaha RD125B Service Data
Yamaha RD125C Service Data

[SoCal250]

Yamaha RD200B Service Data
Yamaha RD200C Service Data

[SoCal250]

Yamaha RD400C Service Data  (document has a typo in the model year, should be 1976 not 1975)
Yamaha RD400D Service Data
Yamaha RD400E Service Data

[SoCal250]

1985 Yamaha RZ350N Service Data

[SoCal250]

Yamaha RD250B Service Data
Yamaha RD350B Service Data

[SoCal250]

Cylinder Head Torque Specs

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)

[SoCal250]

Yamaha TZR250 3XV1 carburetor specs

[soonerbillz]

YL1 Overheating fix.