The Yamaha RD500LC, also known as the RZ500 in North America, is a legendary sportbike produced between 1984 and 1985. This 499cc, liquid-cooled, 2-stroke V4 engine motorcycle was engineered to compete at the highest level, leveraging racing technology. It features an aluminum alloy twin-spar frame, dual front disc brakes, a rear disc brake, and advanced TCI front forks paired with a Monoshock rear suspension. Renowned for its potent mid-range power and aggressive top-end delivery, the RD500LC was a premium, high-performance machine that captured the spirit of 1980s motorcycle racing and remains a highly sought-after collector's item. This comprehensive workshop service repair manual provides detailed information for the Yamaha RD500LC (chassis codes 47X and 51X). It covers all aspects of maintenance, diagnostics, and repair, including in-depth procedures for the engine mechanicals, electrical systems, fuel system, cooling, transmission, suspension, brakes, steering, wheels, tires, and bodywork. The manual includes step-by-step instructions, detailed illustrations, diagrams, wiring schematics, and critical specifications such as torque values and fluid requirements. Its scope extends to routine maintenance, major repairs, and electrical system troubleshooting, making it an indispensable resource for owners and technicians aiming to maintain and restore this iconic motorcycle. 🏷️ Basic Information Identification Make: Yamaha Model: RD500LC Model Nickname: RZ500 (North American designation) Production Years Covered: 1984-1985 Codes Chassis Code: 47X (RD500LC), 51X (RZ500) 👋 Introduction Market Position Positioning: A premium, high-performance sportbike of its era, often referred to as a 'homologation special' for racing. Competitive Analysis Competitors: Suzuki RG500 Gamma, Honda NS400R, Kawasaki KR-1S. Key Features Engine Configuration: Liquid-cooled, 499cc, 2-stroke, V4 engine with reed valve induction. Power Delivery: Known for its potent mid-range power and aggressive top-end delivery. Chassis Design: Aluminium alloy twin-spar frame for rigidity. Braking System: Dual front disc brakes and a rear disc brake. Suspension: TCI (Tone-Controlled Ignition) front forks and a Monoshock rear suspension. 📋 Manual Details Coverage Areas Primary Coverage: Complete Workshop Service Repair Secondary Coverage: Troubleshooting, diagnostics, maintenance, repair Page Count Estimated Page Count: Varies by specific print, but comprehensive coverage implies hundreds of pages. Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, inspection, assembly, and tuning of the 2-stroke V4 engine. Engine Electrical: Ignition system, charging system, CDI, wiring diagrams, component testing. Fuel System: Carburetor overhaul, tuning, fuel tank, fuel lines, fuel pump. Cooling System: Radiator, water pump, thermostat, coolant flow diagrams. Transmission: Gearbox disassembly, inspection, repair, clutch operation and adjustment. Suspension Front: Front fork (TCI-equipped) disassembly, servicing, oil specifications, damping adjustments. Suspension Rear: Monoshock rear suspension servicing, linkage maintenance, shock absorber adjustments. Brakes Front: Disc brake system, caliper overhaul, pad replacement, bleeding procedures. Brakes Rear: Disc brake system, caliper overhaul, pad replacement, bleeding procedures. Steering: Handlebar assembly, steering head bearing maintenance and adjustment. Wheels And Tires: Wheel bearing maintenance, tire inspection, pressure recommendations. Body And Frame: Fairing removal, bodywork components, frame inspection. Electrical System Component: Lighting, instrumentation, switches, horn, battery maintenance. Emission Control: Information on emission control systems (if applicable to specific market variants). Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, spark plug servicing, lubrication points. Troubleshooting: Diagnostic flowcharts and common problem identification for engine, electrical, and chassis. Major Repairs: Engine rebuilds, transmission overhauls, suspension component replacement, carburetor synchronization. Electrical Diagnosis: Step-by-step electrical system troubleshooting using wiring diagrams. Specifications And Torque: Detailed torque values for fasteners, engine clearances, and fluid capacities. Technical Depth Depth: Comprehensive; suitable for both DIY enthusiasts and professional mechanics. Detail Level: Step-by-step instructions, detailed illustrations, diagrams, and wiring schematics. 📊 Manual Specifications File Format Format: PDF Features: Zoom IN/OUT capability, searchable text (if OCR'd). Print Quality Printability: Fully Printable Binding Type Binding: Digital (PDF) Paper Type Digital Format: Electronic document optimized for viewing and printing. ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, V4, liquid-cooled Displacement: 499 cc (30.45 cu in) Bore X Stroke: 54.0 mm x 54.5 mm (2.13 in x 2.15 in) Compression Ratio: 7.2:1 (approximate) Valve Mechanism: Reed valve induction Performance Horsepower Rating: Approx. 87 hp @ 9,500 rpm (European spec, may vary by market) Torque Rating: Approx. 68 Nm (50 lb-ft) @ 8,000 rpm (approximate) Top Speed: Approx. 220 km/h (137 mph) Fuel System Carburetors: 4 x Mikuni VM26SS or similar, butterfly-valve type with T.C.I. control. Fuel Type: Unleaded gasoline (Premium unleaded recommended), 2-stroke oil pre-mix or Autolube system. 🔧 Transmission Standard Type: 6-speed constant mesh Optional Availability: N/A (Standard 6-speed manual) Features Clutch Type: Wet, multi-disc 📐 Dimensions Exterior Length: Approx. 2155 mm (84.8 in) Width: Approx. 745 mm (29.3 in) Height: Approx. 1210 mm (47.6 in) Wheelbase: Approx. 1440 mm (56.7 in) Weights Dry Weight: Approx. 193 kg (425 lbs) Wet Weight: Approx. 206 kg (454 lbs) Fuel Capacity: 21 liters (5.5 US gal) 🛡️ Safety Features Ratings Crash Test Data: N/A for motorcycles of this era....