Category:
        
        
            Sport/Recreational ATV
        
     
    
        
            Target Audience:
        
        
            Recreational riders, trail enthusiasts, those performing their own maintenance and repairs.
        
     
    
    
        
            Competitors 2003:
        
        
            Yamaha Warrior 350, Honda TRX300EX, Suzuki LT-Z250/400, Kawasaki KFX400
        
     
    
    
        
            Engine Configuration:
        
        
            Single-cylinder, liquid-cooled (often), 2-stroke for 250cc, 4-stroke for 400cc (verify specific model documentation)
        
     
    
        
            Drive System:
        
        
            2WD (Rear Wheel Drive)
        
     
    
        
            Transmission:
        
        
            Automatic (CVT) or Manual Clutch with 5-speed transmission (verify specific model documentation)
        
     
 
    
    
    
        
            Powertrain:
        
        
            Engine, transmission, drivetrain, clutch, cooling system, exhaust system
        
     
    
        
            Chassis:
        
        
            Frame, suspension (front and rear), steering, wheels, tires
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system (front and rear), calipers, master cylinders, brake lines, parking brake
        
     
    
        
            Electrical:
        
        
            Ignition system, starting system, charging system (stator, regulator/rectifier), lighting system, battery, wiring diagrams, fuses, relays, switches
        
     
    
        
            Fuel System:
        
        
            Carburetor (specific models), fuel pump, fuel lines, fuel filter, fuel tank
        
     
    
        
            Body And Trim:
        
        
            Body panels, fenders, seat, handlebars, racks, graphics
        
     
    
        
            Special Tools:
        
        
            Identification and usage of specialized tools required for repairs
        
     
    
    
        
            Maintenance:
        
        
            Routine checks, lubrication, filter replacement, spark plug service, chain adjustment, battery maintenance
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common issues, symptom-based troubleshooting guides
        
     
    
        
            Repair:
        
        
            Detailed step-by-step instructions for disassembly, repair, and reassembly of all major components and systems
        
     
    
        
            Overhaul:
        
        
            Complete engine rebuild procedures, transmission overhaul, carburetor overhaul
        
     
    
        
            Adjustment:
        
        
            Carburetor tuning, valve clearance adjustment, brake lever adjustment, chain tension adjustment
        
     
    
        
            Wiring Diagrams:
        
        
            Comprehensive electrical wiring schematics for troubleshooting and component identification
        
     
    
    
        
            Depth:
        
        
            Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostics.
        
     
 
    
    
    
        
            250Cc Engine:
        
        
            Likely a 2-stroke, single-cylinder engine. Displacement ~244cc. Known for spirited performance.
        
     
    
        
            400Cc Engine:
        
        
            Likely a 4-stroke, single-cylinder engine. Displacement ~375cc or 400cc. Offers increased torque and power.
        
     
    
    
        
            Horsepower 250Cc Estimate:
        
        
            Approximately 25-30 HP (varies by tuning and specific model variant)
        
     
    
        
            Horsepower 400Cc Estimate:
        
        
            Approximately 30-35 HP (varies by tuning and specific model variant)
        
     
    
    
        
            Carburetor 250Cc:
        
        
            Typically a Mikuni VM carburetor (e.g., VM32 or similar)
        
     
    
        
            Carburetor 400Cc:
        
        
            Typically a larger Mikuni carburetor (e.g., VM36 or similar) or Keihin CV
        
     
    
    
        
            Cooling Method 250Cc:
        
        
            Liquid-cooled
        
     
    
        
            Cooling Method 400Cc:
        
        
            Liquid-cooled
        
     
    
    
        
            Ignition System:
        
        
            CDI (Capacitor Discharge Ignition)
        
     
 
    
    
    
        
            Transmission Type:
        
        
            Automatic Clutch with 5-Speed Manual Transmission (most common for TrailBlazer models of this era)
        
     
    
    
        
            Optional Transmission:
        
        
            Some variations may have had a different transmission configuration, though the 5-speed manual with auto clutch was prevalent.
        
     
    
    
        
            Drive Type:
        
        
            Shaft Drive to rear axle
        
     
    
        
            Clutch:
        
        
            Automatic centrifugal clutch
        
     
    
    
        
            Transmission Fluid:
        
        
            API GL-4 Gear Oil (e.g., SAE 80W-90) or specific Polaris AGL fluid.
        
     
 
    
    
    
        
            Wheelbase Estimate:
        
        
            Approximately 49-50 inches (varies slightly by model)
        
     
    
        
            Ground Clearance Estimate:
        
        
            Approximately 5-6 inches
        
     
    
    
        
            Dry Weight Estimate:
        
        
            Approximately 350-400 lbs (varies by model)
        
     
    
        
            Towing Capacity:
        
        
            Typically rated for trailering (check specific owner's manual for exact rating)
        
     
 
    
    
    
        
            Atv Safety Standards:
        
        
            Adheres to ANSI standards for ATVs.
        
     
    
    
        
            Braking System:
        
        
            Hydraulic disc brakes front and rear for reliable stopping power.
        
     
    
        
            Lighting:
        
        
            Headlights and taillight for visibility.
        
     
    
    
        
            Handlebars:
        
        
            Comfortable grip handlebars with integrated handguards for protection.
        
     
 
    
    
    
        
            Infotainment Features:
        
        
            N/A (Basic recreational ATV focused on performance, not typically equipped with infotainment systems).
        
     
    
    
        
            Assistance Features:
        
        
            N/A (No electronic driver assistance features like ABS, traction control, etc. common on modern vehicles).
        
     
    
    
        
            Connectivity Options:
        
        
            N/A (No onboard connectivity features).
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Typically every 100 hours or 6 months for engine oil and filter.
        
     
    
        
            Spark Plug Replacement:
        
        
            Check and clean every 30-40 hours, replace as needed based on condition.
        
     
    
        
            Air Filter Cleaning:
        
        
            Inspect and clean every 20-30 hours, more frequently in dusty conditions.
        
     
    
    
        
            Engine Oil 250Cc:
        
        
            Typically a 2-stroke oil, mixed with gasoline according to manufacturer's specifications (e.g., Polaris Premium 2-Stroke Oil).
        
     
    
        
            Engine Oil 400Cc:
        
        
            Typically SAE 10W-40 or 20W-50, API SG or higher (check manual for exact specification).
        
     
    
        
            Coolant Type:
        
        
            Ethylene glycol-based antifreeze mixed with distilled water (typically 50/50).
        
     
    
    
        
            2-Stroke Engine 250Cc:
        
        
            Potential for carbon buildup in exhaust ports, carburetor jetting sensitivity, recoil starter reliability.
        
     
    
        
            4-Stroke Engine 400Cc:
        
        
            Valve adjustment needs, potential for cam chain wear, oil leaks from seals.
        
     
    
        
            Electrical System:
        
        
            Stator failures, regulator/rectifier issues, wiring harness chafing.
        
     
    
        
            Suspension:
        
        
            Wear in ball joints, tie rod ends, and shocks over time.
        
     
    
    
        
            Engine Oil Capacity 400Cc:
        
        
            Approximately 1.8-2.0 liters (check manual for precise capacity)
        
     
    
        
            Coolant Capacity:
        
        
            Approximately 1.0-1.5 liters (check manual for precise capacity)
        
     
 
    
    
    
        
            Polaris Heritage:
        
        
            Polaris Industries is a long-standing American manufacturer known for its innovative snowmobiles, ATVs, and powersports vehicles since its founding in 1954.
        
     
    
    
        
            Trailblazer Lineage:
        
        
            The TrailBlazer line was developed as a sport-oriented ATV, building on Polaris's experience in the recreational vehicle market. It offered a balance of performance and maneuverability.
        
     
    
    
        
            Production Period:
        
        
            The Polaris TrailBlazer was produced for several years in the late 1990s and early 2000s, with 2003 being a key model year.