Engine Mechanical:
Complete engine disassembly, assembly, inspection, and repair of internal components, including cylinders, pistons, crankshaft, camshafts, valves, and timing.
Engine Fuel System:
Carburetor (VM type) adjustment, cleaning, rebuilding, fuel tank, fuel lines, fuel pump troubleshooting.
Engine Ignition System:
Ignition timing, spark plugs, ignition coils, CDI unit diagnosis and replacement.
Engine Lubrication System:
Oil pump operation, oil filter replacement, oil change procedures, lubrication points.
Cooling System:
Air-cooled system principles, cooling fins inspection and cleaning.
Transmission And Drivetrain:
Clutch operation, inspection, and adjustment; gearbox disassembly, assembly, and troubleshooting; final drive (shaft drive) inspection, lubrication, and component replacement.
Suspension System:
Front fork disassembly, fork seal replacement, oil change, rear shock absorber inspection and replacement, swingarm maintenance.
Brake System:
Front and rear brake caliper service, brake pad replacement, brake fluid flush and bleed, master cylinder inspection, brake hose replacement.
Electrical System:
Battery maintenance and testing, charging system (stator, regulator/rectifier) diagnosis, starter motor operation, lighting system (headlight, taillight, turn signals), wiring diagrams, fuse replacement, horn, instrument panel functionality.
Frame And Bodywork:
Frame inspection, disassembly and reassembly of body panels, fenders, fuel tank mounting, seat removal and installation, handlebar and control lever adjustment.
Wheels And Tires:
Tire inspection, pressure checks, tire replacement procedures, wheel bearing maintenance, spoke tensioning (if applicable to specific wheel types).
Routine Maintenance:
Oil and filter changes, spark plug replacement, air filter cleaning/replacement, chain lubrication and adjustment (if applicable, though V-Star 650 uses shaft drive), brake fluid checks and changes, tire pressure checks.
Troubleshooting Guides:
Systematic diagnostic procedures for common and uncommon issues related to engine performance, electrical faults, braking problems, and starting difficulties.
Repair And Rebuild:
Detailed, step-by-step instructions for component removal, overhaul, and reinstallation, including engine internal rebuilds, carburetor overhauls, and suspension component repairs.
Technical Specifications Data:
Torque specifications for all fasteners, clearances, fluid capacities, electrical system specifications, and dimensional data.
Wiring Diagrams:
Comprehensive electrical schematics for all model variants, aiding in troubleshooting and repair of the electrical system.
Depth Level:
Professional Quality, In-depth Service and Repair
Diagnostic Capabilities:
Advanced diagnostic procedures for all major systems, enabling technicians and skilled DIYers to pinpoint and resolve complex issues.
Rebuild Instructions:
Complete rebuild instructions for major components, including the engine, transmission, and suspension, suitable for full overhauls.
Engine Type:
Air-cooled, V-twin, SOHC, 4-stroke
Displacement:
649 cc (39.6 cu. in.)
Bore X Stroke:
74.0 mm x 75.0 mm (2.91 in x 2.95 in)
Valve Arrangement:
SOHC, 2 valves per cylinder
Horsepower:
Approximately 45-50 hp (actual figures vary slightly by year and tuning)
Torque:
Approximately 40-45 lb-ft (actual figures vary slightly by year and tuning)
Carburetion:
Two Mikuni VM Series (VM34) carburetors
Fuel Tank Capacity:
4.0 US gallons (15 Liters)
Fuel Type:
Unleaded gasoline, 87 octane minimum
Oil Change Interval:
Every 3,000 miles or 6 months, whichever comes first.
Spark Plug Replacement:
Inspect every 7,500 miles, replace as needed. Recommended replacement every 15,000 miles.
Air Filter Maintenance:
Inspect every 3,000 miles, clean or replace as needed. Specific interval depends on riding conditions.
Brake Fluid Flush:
Every 2 years or as per manual recommendation, regardless of mileage.
Shaft Drive Maintenance:
Inspect and lubricate every 6,000 miles.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher
Engine Oil Capacity:
Approx. 2.4 Liters (2.5 US quarts) without filter change; Approx. 2.6 Liters (2.7 US quarts) with filter change.
Shaft Drive Oil Type:
Yamalube Hypoid Gear Oil GL-5 SAE 80W-90
Common Wear Items:
Clutch plates, brake pads, fork seals, and rear shock bushings can be common wear items depending on usage.
Potential Carburetor Issues:
Carburetors can become gummed up if the motorcycle sits for extended periods without fuel stabilizer, potentially leading to difficult starting or rough idling.
Electrical Connections:
Corrosion on electrical connectors, particularly in humid environments, can sometimes cause intermittent electrical issues. Regular inspection and dielectric grease application are recommended.
Yamaha Legacy:
Yamaha Motor Company, established in 1955, has a rich heritage in producing high-quality motorcycles, renowned for their innovation, performance, and reliability.
V Star Lineage:
The V-Star series is Yamaha's line of cruiser-style motorcycles, known for their V-twin engines and classic styling. The 650 Custom has been a popular choice for riders seeking a blend of vintage aesthetics and modern performance.
2006-2015 Updates:
While the core design remained consistent, minor updates may have occurred across these model years regarding cosmetic treatments (like the 'Midnight Custom' variants), minor component refinements, and emissions compliance.
Manufacturing Location:
Primarily manufactured in Japan by Yamaha Motor Company.
