1970-1971 RT1 360cc DT2 RT2 Yamaha Motorcycle Service Manual


SKU: U-LIT-11612-75-99 Category:


This 117 page Yamaha RT1 360cc DT2 RT2 Motorcycle Service Manual is a reproduction of the original, out of print manual. This motorcycle manual provides detailed service information, step-by-step repair instruction and maintenance specifications for 1970 and 1971 Yamaha RT1 motorcycles including the Yamaha RT1, Yamaha RT1B, Yamaha RT1-MX and Yamaha RT1B-MX.

This manual also includes a bonus supplement that covers 1972 Yamaha DT2 250cc and Yamaha RT2 360cc motorcycles.

This Service Manual is directed to acquaint both the owner and mechanic with the operation, service, and maintenance of the RT1 series motorcycle as manufactured by Yamaha Motor Company, Ltd., Hamakita, Japan, during the model years 1970 through 1971. In essence, it is the original RT1B (1971) Service Manual with appropriate information for earlier models. In the rear of the manual you will also find G.Y.T. Kit and Motocross model information.

The RT1 was Yamaha’s logical extension of the tremendously successful DTI, first fully street legal motorcycle designed to enable the owner to ride on the street, use for trail or enduro riding or convert (with factory available parts) into a competition-ready scrambler or motocrosser. It made the off-the-road market what it is today.

This manual, and the technical and service information enclosed, should be closely followed to enable you to properly maintain the machine, thereby ensuring continuous good performance and long service life.

Even though this information applies to several models, many of the servicing procedures are identical. Whenever there is a difference in specifications and/or servicing procedure, the individual will be noted. Unless otherwise marked, consider the information to be universally applicable.

Table of Contents

General – Features, Specifications, Performance Curves, Tools and Instruments for Shop Service

Yamaha Autolube – What is Yamaha Autolube?, Features of Yamaha Autolube, Handling the Oil Pump

5-Port Cylinder Induction System – Construction and Features Design of the 5-port Induction System

Engine – Engine Exploded View – Engine Removal, Cylinder Head, Cylinder, Piston Pin, Piston Ring, Piston, Flywheel Magneto, Crankcase Cover (RH), Clutch, Primary Drive Gear, Kick Starter Mechanism, Shift Mechanism, Drive Sprocket, Crankcase, Transmission Assembly, Crankshaft, Bearings and Oil Seals, Carburetor, Air Cleaner

Chassis – Front Wheel, Rear Wheel, Rear Wheel Sprocket, Tires and Tubes, Front Forks, Rear Shocks, Gas Tank, Rear Swing Arm, Steering Head, Oil Tank, Battery Box and Tool Box, Frame, Handlebars, Miscellaneous

Electrical Equipment – Construction, Table of Component Parts, Connection Diagram, Ignition System – Function and Service, Ignition Timing, Ignition-Coil, Condenser, Charging System, Battery, Checking the Main Switch, Spark Plug, Lighting and Signal Systems

Conversion for Competition – List of GYT Parts, GYT Competition Parts, Additional Modification, Specifications (GYT), Setting the Ignition Timing, Check and Service Prior to Racing



Additional information

Weight 2 lbs
Dimensions 9 × 11 × 0.5 in

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