Segment:
Sport ATV segment, known for its aggressive styling and performance capabilities.
Competitors:
Polaris Predator 500, Suzuki LT-Z400 Quadsport, Kawasaki KFX400, Honda TRX400EX.
Vehicle Strengths:
Lightweight chassis, powerful two-stroke engine, agile handling, relatively affordable price point.
Diy Benefit:
Empowers owners to perform maintenance and repairs themselves, saving money and gaining deeper vehicle understanding.
Primary Coverage:
2003 Yamaha YFS200R Blaster ATV
Related Manuals Required:
Yamaha YFS200U SERVICE MANUAL, Yamaha YFS200A 1990 SUPPLEMENTARY SERVICE MANUAL, Yamaha YFS200P 2002 SUPPLEMENTARY SERVICE MANUAL
Estimated Page Count:
Refer to combined total of all required manuals for complete coverage. This supplementary manual adds new service and data.
Type:
Supplementary Service Manual / Workshop Manual
Engine:
Engine overhaul, removal/installation, major components, diagnostics, troubleshooting.
Carburetion:
Carburetor service, adjustment, troubleshooting, jetting information (pilot jet, main jet, mixture screw).
Chassis:
Frame, suspension (front forks, rear suspension, triple tree), steering, wheels, tires, brakes.
Electrical:
Ignition system, charging system (magneto, rectifier), lighting, starter system, switches, wiring diagrams (implied).
Maintenance:
Periodic checks, adjustments, fluid changes (coolant, oil - though specific oil type not listed, general lubrication guidance implied).
Repair:
Step-by-step repair instructions for major components and systems.
Diagnostics:
System diagnostics, troubleshooting common problems (e.g., no spark, starting issues).
Overhaul:
Complete overhaul procedures for engine and major components.
Installation:
Removal and installation of major components.
Depth:
Comprehensive coverage suitable for DIY mechanics and professional technicians. Includes detailed diagrams and illustrations.
Compatibility:
Compatible with all Windows PC OS, MAC OS, and Linux OS.
Compression:
May require a compression utility (e.g., 7-zip) if the PDF is within an archive.
Printability:
Printable pages for hard copy reference.
Binding:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Engine Type:
Two-stroke, Reed Valve, Liquid-Cooled
Bore X Stroke:
66.0 mm x 57.0 mm
Compression Ratio:
7.3:1 (Typical for this model, manual will confirm exact)
Horsepower:
Approximately 20-25 HP (Est. for 2003 model, manual provides precise figures).
Torque:
Refer to manual for specific torque specifications.
Carburetor:
Mikuni VM26SS
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Oil Mixture:
Yamaha 2-Stroke Premium Oil (or equivalent) mixed with fuel at a specified ratio (refer to manual for exact ratio).
Engine Oil Type:
Yamalube 2R or equivalent 2-stroke oil (for oil injection system if equipped).
Length:
Approximately 70.9 inches (1800 mm)
Width:
Approximately 45.1 inches (1145 mm)
Height:
Approximately 43.7 inches (1110 mm)
Dry Weight:
Approximately 321 lbs (145.5 kg)
Wheelbase:
Approximately 49.2 inches (1250 mm)
Ground Clearance:
Approximately 4.1 inches (104 mm)
Oil Change Interval:
Refer to manual for specific engine oil change intervals (if applicable for gearbox oil).
Spark Plug Replacement:
Refer to manual for recommended spark plug replacement intervals and type.
Air Filter Cleaning:
Regular cleaning/replacement is crucial for engine performance; refer to manual for intervals based on operating conditions.
Coolant Type:
Yamaha Yamalube Coolant or equivalent antifreeze/coolant (refer to manual for specific type and mixture ratio).
Gearbox Oil Type:
Yamalube 10W-30 or equivalent SAE 10W-30 API SG or higher transmission oil (confirm with manual for exact specification).
Common Blaster Issues:
Carburetor clogging due to fuel varnish, occasional ignition system issues (e.g., CDI, stator), worn clutch plates, suspension wear. Manual provides troubleshooting for these.
Valve Clearance:
N/A (2-stroke engine does not have valves in the traditional sense, but refers to reed valve operation).
Tire Pressure:
Refer to manual for recommended tire pressures for front and rear tires.
Torque Specs:
Manual provides specific torque values for critical fasteners such as cylinder head, crankcase bolts, wheel hubs, etc.
Yamaha Atv History:
Yamaha has a long history in powersports, including pioneering many ATV technologies and models.
Blaster Lineage:
The Blaster line has been a popular entry-level to mid-range sport ATV, known for its user-friendliness and affordability.
Production Years:
The Blaster was produced from the mid-1980s through the late 2000s, with continuous updates.
