Yamaha DS7 RD250 R5C RD350 Service Manual

Comprehensive service manual for Yamaha DS7 (1972), RD250 (1973), R5C (1972) and RD350 (1973) models. This workshop manual combines the original DS7 and R5C service documentation with full coverage of RD250 and RD350 specifications and procedures. The manual provides extensive detail on the Yamaha Autolube system—a separate automatic lubrication circuit—with complete pump operation and maintenance instructions, minimum stroke adjustment procedures, and system bleeding sequences. Engine chapters address 5-port and 7-port cylinder porting configurations, the Torque Induction System, and Yamaha reed valve mechanics. Detailed sections cover cylinder head assembly, bore specifications, pistons and piston pins, crankcase construction, clutch operation, primary drive gear, crankshaft, transmission layout, kick starter mechanism, shifter components, and tachometer drive. Chassis coverage includes front wheel design variations across R5C, DS7, RD250 and RD350 models, rear wheel construction, drum and disc brake specifications and adjustment, tire replacement procedures, rear wheel sprocket selection, suspension geometry, and steering assembly. Electrical systems chapters address charging and ignition system operation and troubleshooting. Complete appendices include unit conversion tables, parts ordering reference system, full circuit diagrams for all variants, and cable routing diagrams showing correct installation paths for each model.