Yamaha RD500 RD500LC 1984-1985 Workshop Service Manual

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Type: Motorcycle

Vendor:

Sku: 56689

Tags: 1984 1985 Marine Motorcycle RD500 RD500LC Sterndrive Yamaha

Product variants

Description

The RD500LC, produced from 1984 to 1985, represents a significant chapter in sportbike history. As a homologation special, it brought racing-derived technology from the Grand Prix circuits directly to the street, featuring a potent liquid-cooled, 2-stroke, V4 engine that delivered impressive performance. Its engineering quality and reliability, characteristic of a commitment to performance, made it a formidable competitor against other high-performance machines of the mid-1980s. The RD500LC is celebrated for its unique V4 configuration and the advanced Power Valve System (YPVS), which optimized power delivery across the rev range, cementing its status as an iconic and highly sought-after motorcycle for enthusiasts and collectors. This comprehensive workshop service and repair manual provides essential, manufacturer-approved information for the maintenance, diagnosis, and repair of the RD500LC. Covering hundreds of pages, it details every major system, including the engine, fuel system, transmission, electrical system, chassis, brakes, and bodywork. The manual offers step-by-step instructions for periodic maintenance, troubleshooting common and uncommon faults, complete overhaul procedures for the engine and transmission, and detailed wiring diagrams. Its in-depth technical coverage is suitable for professional technicians and advanced DIY mechanics aiming to ensure the optimal performance and longevity of this classic sportbike.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

RD500LC

Production Years:

1984-1985

Codes

Vin Code Start Year:

Vin Code Letter Eighth Digit:

E (1984), F (1985)

👋 Introduction

Market Position

Historical Context:

The Yamaha RD500LC was a highly sought-after sportbike of its era, known for its powerful two-stroke V4 engine and racing-derived technology. It was a homologation special designed to compete in production racing. This manual caters to owners and technicians who appreciate and maintain these iconic machines.

Target Audience:

Enthusiasts, owners, and professional mechanics specializing in classic or performance 2-stroke motorcycles.

Competitive Analysis

Competitive Landscape:

Competed against other high-performance two-stroke sportbikes of the mid-1980s, such as certain Suzuki RG and Honda NS models. Its V4 configuration offered unique performance characteristics.

Key Features

Manual Value Proposition:

Provides essential, manufacturer-approved information for maintaining, diagnosing, and repairing the Yamaha RD500LC, enabling cost savings on professional labor and ensuring optimal performance and longevity.

📋 Manual Details

Coverage Areas

Region Covered:

Global (assumed based on professional technician focus)

Page Count

Estimated Page Count:

Hundreds of pages (as per product description)

Manual Type

Type:

Workshop Service Manual / Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Complete overhaul, tuning, lubrication, cooling system

Fuel System:

Carburetor adjustment, fuel lines, fuel pump

Transmission:

Gearbox disassembly, assembly, gear shift mechanism

Electrical System:

Ignition system, lighting, charging system, wiring diagrams

Chassis And Suspension:

Front forks, rear shock absorbers, swingarm, steering system

Brakes:

Front and rear brake systems, hydraulic components, disc replacement

Bodywork And Trim:

Fairings, fuel tank, seat, fenders, decals

Wheels And Tires:

Wheel bearing maintenance, tire replacement, wheel balancing

Cooling System:

Radiator, water pump, thermostat, coolant flow

Exhaust System:

Exhaust pipe, muffler, YPVS control mechanism

Procedures Included

Maintenance:

Periodic maintenance charts, lubrication schedules, general upkeep

Troubleshooting:

Diagnostic procedures for common and uncommon faults

Repair:

Step-by-step repair instructions for all major components

Overhaul:

Engine and transmission overhaul procedures

Wiring Diagrams:

Detailed electrical system wiring diagrams

Diagnostics:

Troubleshooting guides for ignition, fueling, and mechanical issues

Adjustments:

Carburetor, clutch, throttle, and brake lever adjustments

Technical Depth

Depth:

Comprehensive, suitable for professional technicians and advanced DIY mechanics

Rebuild Procedures:

Detailed procedures for engine top-end and bottom-end rebuilds

📊 Manual Specifications

File Format

File Format:

Searchability:

Likely text-searchable within PDF viewer, depending on OCR quality

Print Quality

Printability:

Full Printable

Zoom Capability:

Binding Type

Binding Type:

Digital (PDF Download)

Paper Type

Paper Type:

N/A (Digital)

Delivery

Delivery Method:

Instant Download

Requirements

Software Requirements:

Adobe PDF Reader, WinRAR

Compatibility

Operating Systems:

All Versions of Windows & Mac

⚙️ Engine Specifications

Primary Engine

Engine Type:

Liquid-cooled, 2-stroke, V4

Displacement:

499 cc

Bore X Stroke:

54.0 mm x 54.0 mm

Compression Ratio:

6.2:1 (approx.)

Valvetrain:

Reed valve induction

Ignition System:

CDI (Capacitor Discharge Ignition)

Performance

Horsepower Peak:

85.8 hp @ 9,000 rpm (approx.)

Torque Peak:

70.1 Nm @ 8,000 rpm (approx.)

Fuel System

Carburetor Type:

4x Mikuni VM26SS (or similar specification)

Fuel Induction:

Carbureted, YPVS (Yamaha Power Valve System)

Lubrication

Oil System:

Autolube (Premix)

🔧 Transmission

Standard

Transmission Type:

6-speed constant mesh

Clutch Type:

Wet, multiple disc

Features

Gear Ratios:

Specific ratios detailed in the manual

Final Drive:

Chain drive

📐 Dimensions

Exterior

Length:

2,090 mm (approx.)

Width:

710 mm (approx.)

Height:

1,160 mm (approx.)

Wheelbase:

1,440 mm (approx.)

Weights

Dry Weight:

185 kg (approx.)

🛡️ Safety Features

Active Features

Braking System:

Dual front disc brakes, single rear disc brake

Passive Features

Frame Type:

Steel diamond frame

💡 Technology Features

Infotainment

Infotainment System:

N/A (Analog instrumentation only)

Driver Assistance

Rider Aids:

Yamaha Power Valve System (YPVS) for optimized power delivery

Connectivity

Connectivity Features:

🔧 Maintenance

Service Intervals

Oil Change Interval:

Refer to manual for specific intervals based on usage

Spark Plug Maintenance:

Refer to manual for inspection and replacement intervals

Fluid Specifications

Engine Oil Type:

2-stroke oil suitable for premix, specification detailed in manual (e.g., JASO FD)

Coolant Type:

Ethylene glycol-based antifreeze (e.g., Yamalube Coolant)

Brake Fluid Type:

DOT 4 (specified in manual)

Transmission Oil Type:

Yamaha Gear Oil or equivalent (specification detailed in manual)

Fork Oil Type:

Suspension fluid (viscosity specified in manual, e.g., 10W)

Known Issues

Typical Wear Items:

Exhaust power valves (YPVS), clutch plates, crankshaft seals, carburetors require regular attention due to 2-stroke nature.

Common Faults:

Carburetor gumming, YPVS servo malfunction, electrical connector corrosion, potential crank seal leaks.

Engine Cooling:

Overheating can be an issue if coolant levels or flow are compromised. YPVS system requires periodic cleaning and lubrication.

📚 Vehicle History

Brand Heritage

Yamaha Motorcycles:

Yamaha Motor Company has a rich history in motorcycle racing and performance, particularly with its 2-stroke technology, establishing a strong reputation for innovation and speed.

Model Evolution

Rd Series Legacy:

The RD500LC is a culmination of Yamaha's highly successful RD series of 2-stroke performance motorcycles, building on the legacy of models like the RD350LC.

Homologation Special:

The RD500LC was developed to homologate Yamaha's racing efforts in the Grand Prix 500cc class, bringing race-bred technology to the street.

Production

Manufacturing Location:

Japan (assumed)

🏆 Awards & Recognition

Recognitions

Performance Accolades:

The RD500LC was widely praised for its performance and handling in contemporary motorcycle publications, often winning comparison tests in the sportbike category.