Segment:
High-performance sportbike, halo model for Yamaha's two-stroke line.
Competitors:
Suzuki RG500 Gamma, Honda NS400R, Kawasaki KR250.
Engine Configuration:
V4 two-stroke, liquid-cooled, reed valve induction.
Unique Engineering:
Features Yamaha's Y.P.V.S. (Yamaha Power Valve System) for improved powerband characteristics, and separate lubrication systems (Autolube) for each cylinder bank.
Target Audience:
Professional motorcycle technicians, experienced DIY enthusiasts, collectors, and restorers of the RD500LC/RZ500.
Benefit:
Provides the essential technical knowledge to maintain, diagnose, and repair the complex V4 two-stroke engine and associated systems, ensuring longevity and optimal performance.
Primary Coverage:
Yamaha RD500LC 1984-1985
Secondary Coverage Implication:
Likely covers common maintenance and repair procedures applicable to similar Yamaha two-stroke performance motorcycles of the era.
Estimated Page Count:
Estimated to be comprehensive, likely exceeding 300 pages based on detail described. Exact count not provided.
Type:
Full Service Repair Manual
File Format:
PDF Download
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader, WinRAR
Compatibility:
All Versions of Windows & Mac
Engine:
Complete overhaul, tuning, lubrication, cooling system, fuel system (carburetors, fuel pump), ignition system, exhaust system.
Transmission:
Clutch assembly, gearbox, shifting mechanism, lubrication.
Chassis:
Frame, suspension (front forks, rear monoshock), steering, wheels, tires.
Brakes:
Front and rear brake systems (hydraulic disc), caliper maintenance, master cylinders, fluid replacement.
Electrical:
Wiring diagrams, lighting system, charging system (alternator, battery), starting system, ignition coils, switches, diagnostic procedures.
Bodywork:
Fairings, seating, fuel tank, panel removal and installation.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake inspections, tire pressure checks.
Troubleshooting:
Diagnostic flowcharts, common problem identification and resolution for engine, electrical, and mechanical issues.
Repair:
Component-level repair and replacement for all covered systems.
Rebuild:
Engine rebuild procedures, including cylinder and piston replacement, crankshaft and bearing service.
Restoration:
Detailed guidance for refurbishing and restoring the motorcycle to original specifications.
Depth:
Comprehensive, covering from basic maintenance to full engine disassembly and rebuild, suitable for professional technicians and advanced DIY mechanics.
Diagnostic Focus:
Strong emphasis on diagnostic procedures, particularly for electrical systems, with integrated wiring diagrams.
Type:
Liquid-cooled, 2-stroke, V4
Bore X Stroke:
54.0 mm x 54.0 mm
Power Valve System:
Yamaha Power Valve System (Y.P.V.S.)
Horsepower Peak:
80 hp @ 9,000 rpm (approx. - varies by market/tuning)
Torque Peak:
67 Nm (49.4 lb-ft) @ 8,500 rpm (approx.)
Carburetor Setup:
Mikuni VM26SS (Four x 26mm constant velocity carburetors)
Lubrication System:
Autolube (Separate oil injection for each cylinder bank)
Cooling Type:
Liquid-cooled
Crash Test Ratings:
N/A (Motorcycle, pre-dates modern standardized motorcycle crash testing protocols).
Braking System:
Dual front disc brakes, single rear disc brake. High-performance calipers likely fitted (e.g., 4-piston front).
Frame Design:
Steel diamond frame providing rigidity and handling characteristics.
Infotainment System:
N/A (This is a 1980s sportbike, focused on pure performance; no integrated infotainment systems were present).
Rider Aids:
N/A (No electronic rider aids like ABS, traction control, or ride modes were available).
Power Delivery Tech:
Yamaha Power Valve System (Y.P.V.S.) to broaden the powerband.
Engine Management:
C.D.I. (Capacitor Discharge Ignition) system for precise ignition timing.
Oil Change:
Refer to manual. Typically every 3,000-5,000 km or annually, depending on usage.
Spark Plug Inspection Replacement:
Refer to manual. Crucial for two-strokes, likely every 5,000-10,000 km, depending on plug type and riding conditions.
Air Filter Cleaning Replacement:
Refer to manual. Often required more frequently in dusty conditions.
Chain Lubrication Adjustment:
Regularly, ideally every 500-1000 km or after washing/rain.
Coolant Flush Replacement:
Refer to manual. Typically every 2 years or as per mileage interval.
Two Stroke Oil:
High-quality, JASO FD or API TC rated synthetic or semi-synthetic 2-stroke oil recommended for the Autolube system. Specific Yamaha recommendations are paramount.
Brake Fluid:
DOT 3 or DOT 4, depending on Yamaha's specific recommendation for the braking system.
Coolant:
Ethylene glycol-based, permanent type coolant (typically 50/50 mix with distilled water).
Engine Wear:
High-strung two-stroke engines are prone to wear if not properly maintained. Piston ring and cylinder scoring can occur if pre-mix or Autolube system fails, or if run too lean. Crankshaft bearings can also be a wear item.
Carburetor Tuning:
Mikuni carburetors can be sensitive and require precise tuning, especially with modern fuel blends. Synchronization is critical for the V4 setup.
Electrical Gremlins:
Wiring harnesses of this era can degrade, leading to intermittent electrical issues. Faulty stator or R/R units are also possible failure points.
Ypvs System:
The power valve system can get gummed up with carbon deposits, requiring periodic cleaning and proper function verification.
Yamaha Two Stroke Legacy:
Yamaha has a rich heritage in Grand Prix racing and performance two-stroke motorcycles, with the RD series being iconic in this lineage. The RD500LC built upon the success of models like the RD350LC and RD400.
Development Context:
Developed as Yamaha's answer to the 500cc class racing homologation specials that were hitting the streets, aiming to bring a taste of the racetrack to the road.
Manufacturing Location:
Japan
Market Significance:
Considered a 'homologation special' for racing, it was a limited production, high-performance machine that captured the imagination of riders worldwide.
Historical Acclaim:
Widely praised by the motorcycle press of its era for its incredible performance, handling, and resemblance to its GP racing counterparts. Often cited as one of the most exciting production motorcycles of the 1980s.
Collectible Status:
Highly sought-after by collectors and enthusiasts today due to its rarity, performance, and historical significance as the last of Yamaha's V4 two-stroke sportbikes.
