Target Audience:
Enthusiasts, mechanics, and owners seeking in-depth knowledge for maintenance and repair of the Yamaha SZR660.
Value Proposition:
Comprehensive resource for all aspects of SZR660 care, enabling efficient and accurate servicing.
Manual Superiority:
Offers more detailed technical information and repair procedures than basic owner's manuals.
Detail Emphasis:
Focuses on 'everything you will ever need' to repair, maintain, rebuild, and restore the motorcycle.
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures.
Fuel System:
Carburetor tuning, fuel pump, fuel lines, and fuel tank maintenance.
Ignition System:
Spark plugs, ignition coils, CDI unit, timing, and troubleshooting.
Cooling System:
Radiator, coolant, thermostat, water pump, and hoses.
Exhaust System:
Muffler, header pipes, and emissions control components.
Transmission Drivetrain:
Clutch operation, gearbox, final drive, chain maintenance.
Chassis Frame:
Frame inspection, alignment, and repair.
Suspension Front:
Front forks, steering bearings, and wheel assembly.
Suspension Rear:
Monoshock absorber, linkage system, and swingarm maintenance.
Braking System:
Front and rear disc brake systems, hydraulic lines, calipers, and master cylinders.
Electrical System:
Wiring diagrams, battery, charging system (stator/rotor), lighting, and switches.
Bodywork Fairings:
Removal, installation, and repair of plastic body panels and fairings.
Routine Maintenance:
Oil changes, filter replacements, chain lubrication, brake checks, tire pressure.
Troubleshooting Diagnostics:
Step-by-step diagnostic guides for common and uncommon problems.
Component Replacement:
Detailed instructions for replacing all major and minor components.
Rebuilding Procedures:
Comprehensive guides for rebuilding major assemblies like engines and carburetors.
Electrical Troubleshooting:
Using wiring diagrams to diagnose electrical faults.
Detail Level:
In-depth technical explanations and procedures for professional technicians and advanced DIY mechanics.
Precision Measurement:
Includes torque specifications, clearances, and tolerances for all critical components.
Diagnostic Charts:
Feature diagnostic flowcharts for systematic problem-solving.
Special Tools:
Identifies any specialized tools required for specific repairs or adjustments.
Engine Type:
Liquid-cooled, 4-stroke, DOHC, 5-valve, parallel-twin
Displacement:
634 cc (actual displacement may vary slightly by market specification)
Bore X Stroke:
Approximately 73.0 mm x 75.0 mm
Compression Ratio:
Approximately 9.5:1
Horsepower:
Approx. 50-55 HP (power output varies by market and tuning)
Carburetion:
Dual Mikuni CV carbs (e.g., Mikuni BSR32 or similar twin carburetors)
Fuel Type:
Unleaded gasoline
Safety Standards:
Designed to meet prevailing safety regulations for motorcycles of its era.
Braking Performance:
Dual disc front, single disc rear; manual provides detailed brake bleeding and pad replacement procedures.
Lighting System:
Headlight, tail light, brake lights, turn signals; manual covers bulb replacement and electrical troubleshooting.
Oil Change Interval:
Typically every 3,000-6,000 km or 6-12 months, as specified in the manual.
Spark Plug Replacement:
Refer to manual for mileage or time-based intervals (e.g., every 10,000-15,000 km).
Valve Clearance Check:
Critical maintenance item, typically every 10,000-20,000 km; manual provides precise procedure and specifications.
Engine Oil Spec:
Manual will specify Yamaha's recommended API classification and viscosity grade (e.g., SAE 10W-40, API SG or higher).
Brake Fluid Spec:
DOT 3 or DOT 4 hydraulic brake fluid, as specified in the manual.
Coolant Spec:
Permanent type antifreeze (ethylene glycol based) mixed with distilled water, typically 50/50 ratio. Manual will confirm Yamaha's specific recommendation.
Carburetor Sync:
Carburetor synchronization may be required periodically for optimal performance and fuel economy.
Electrical Connections:
As with many bikes of this era, inspecting and cleaning electrical connectors can prevent minor electrical gremlins.
Suspension Wear:
Fork seals and rear shock absorbers may require service or replacement over time due to mileage.
Yamaha Legacy:
Yamaha Motor Company, established in 1955, has a long history of producing innovative and high-performance motorcycles across various segments.
Szr Lineage:
The SZR660 was part of Yamaha's range of sporting motorcycles, often featuring parallel-twin engines and a focus on agility and performance for its class. It built upon Yamaha's experience with multi-cylinder engines.
Production Period:
Produced during the mid-to-late 1990s.
