Historical Context:
        
        
            The 1995 Polaris 400 2x4 was a popular mid-range ATV in its era, known for its utility and recreational capabilities. This service manual is essential for maintaining and repairing this specific model.
        
     
    
    
        
            Segment Competitors:
        
        
            Competed with models from Yamaha (e.g., Kodiak), Suzuki (e.g., QuadSport), and Honda (e.g., FourTrax) in the utility ATV segment.
        
     
    
    
        
            Vehicle Strengths:
        
        
            Reliable 2WD system, capable engine for its class, balanced suspension for various terrains.
        
     
    
        
            Manual Value Proposition:
        
        
            Provides owners and technicians with the authoritative information needed to keep the 1995 Polaris 400 2x4 operating at peak performance and reliability.
        
     
 
    
    
    
        
            Engine Service:
        
        
            Full disassembly, inspection, reassembly, tuning, and troubleshooting
        
     
    
        
            Fuel System:
        
        
            Carburetor service, fuel pump, fuel lines, fuel tank maintenance
        
     
    
        
            Ignition System:
        
        
            CDI, spark plugs, ignition timing, troubleshooting
        
     
    
        
            Transmission Drivetrain:
        
        
            Automatic transmission (CVT) service, clutch, differential, driveshaft maintenance
        
     
    
        
            Suspension Steering:
        
        
            Front and rear suspension, shock absorbers, steering system components, linkage adjustments
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system, calipers, master cylinders, brake fluid, bleeding procedures
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, lighting, battery, stator, starter, troubleshooting electrical faults
        
     
    
        
            Cooling System:
        
        
            Air-cooled engine specifications and maintenance (if applicable, or oil cooling system for relevant models)
        
     
    
        
            Frame Chassis:
        
        
            Frame inspection, repairs, mounting points
        
     
    
        
            Bodywork Plastics:
        
        
            Fairing removal, installation, plastic component care
        
     
    
        
            Wheels Tires:
        
        
            Tire pressure specifications, wheel removal and installation
        
     
    
    
        
            Preventative Maintenance:
        
        
            Scheduled maintenance, fluid changes, lubrication, filter replacement
        
     
    
        
            Troubleshooting Diagnostics:
        
        
            Step-by-step diagnostic procedures for common and uncommon issues, fault code interpretation (if applicable)
        
     
    
        
            Repair Rebuild:
        
        
            Detailed instructions for component repair, overhaul, and complete engine or transmission rebuilds
        
     
    
        
            Carburetor Adjustment:
        
        
            Comprehensive guidance on cleaning, tuning, and synchronizing the carburetor
        
     
    
        
            Electrical Diagnostics:
        
        
            Troubleshooting electrical system faults using multimeter and wiring diagrams
        
     
    
        
            Brake Bleeding:
        
        
            Proper procedures for bleeding the hydraulic brake system
        
     
    
    
        
            Depth Of Information:
        
        
            Factory-level detail suitable for professional mechanics and experienced DIY enthusiasts
        
     
    
        
            Diagnostic Tools:
        
        
            References to required special tools and diagnostic equipment
        
     
 
    
    
    
        
            Engine Type:
        
        
            2-stroke, 1-cylinder
        
     
    
        
            Engine Displacement:
        
        
            340cc - 400cc (approximate, specific variant may vary slightly, refer to manual for precise designation)
        
     
    
        
            Cooling System:
        
        
            Air-cooled or Oil-cooled (refer to manual for specific cooling type)
        
     
    
    
        
            Horsepower Estimated:
        
        
            Approximately 25-30 HP (typical for the class and engine size)
        
     
    
        
            Torque Estimated:
        
        
            Refer to manual for specific torque figures
        
     
    
    
        
            Carburetor Model:
        
        
            Single Mikuni (common, specific model number in manual)
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline (87 octane recommended)
        
     
    
        
            Fuel Mixture:
        
        
            Pre-mix 2-stroke oil and gasoline (refer to manual for precise ratio, typically 40:1 or 50:1)
        
     
    
    
        
            Bore X Stroke:
        
        
            Refer to manual for exact specifications
        
     
    
        
            Compression Ratio:
        
        
            Refer to manual for exact specifications
        
     
 
    
    
    
        
            Transmission Type:
        
        
            Automatic (CVT - Continuously Variable Transmission)
        
     
    
        
            Number Of Gears:
        
        
            Variable (CVT)
        
     
    
        
            Gear Selection:
        
        
            Forward, Neutral, Reverse (FN R)
        
     
    
    
        
            Clutch Type:
        
        
            Automatic centrifugal clutch system
        
     
    
        
            Transmission Fluid Type:
        
        
            Refer to manual for specific fluid type (often SAE 10W-30 or specific ATV transmission fluid)
        
     
    
        
            Transmission Fluid Capacity:
        
        
            Refer to manual for exact capacity
        
     
 
    
    
    
        
            Overall Length:
        
        
            Approx. 72-78 inches (refer to manual for exact figures)
        
     
    
        
            Overall Width:
        
        
            Approx. 42-46 inches (refer to manual for exact figures)
        
     
    
        
            Overall Height:
        
        
            Approx. 42-46 inches (refer to manual for exact figures)
        
     
    
    
        
            Dry Weight:
        
        
            Approx. 400-450 lbs (refer to manual for exact figures)
        
     
    
        
            Ground Clearance:
        
        
            Approx. 7-9 inches (refer to manual for exact figures)
        
     
    
        
            Towing Capacity:
        
        
            Refer to manual for specific towing capacity
        
     
    
    
        
            Wheelbase:
        
        
            Refer to manual for exact wheelbase
        
     
    
        
            Tire Size Front:
        
        
            Typically 23x8-12 or similar (refer to manual for exact specification)
        
     
    
        
            Tire Size Rear:
        
        
            Typically 24x11-10 or similar (refer to manual for exact specification)
        
     
 
    
    
    
        
            Atv Safety Considerations:
        
        
            Designed for off-road use; rider training and protective gear are essential. No formal crash ratings for ATVs.
        
     
    
    
        
            Braking System:
        
        
            Hydraulic disc brakes front and rear, or drum brakes depending on specific variant (manual will detail)
        
     
    
    
        
            Handlebars Grip:
        
        
            Throttle control, brake levers
        
     
    
        
            Operator Awareness:
        
        
            Manual emphasizes safe riding practices and proper ATV operation.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Refer to manual for specific interval, typically every 50-100 operating hours or annually
        
     
    
        
            Spark Plug Replacement:
        
        
            Refer to manual for specific interval, usually based on operating hours or when fouled
        
     
    
        
            Air Filter Cleaning:
        
        
            Frequent cleaning recommended, replacement based on condition and operating environment
        
     
    
        
            Cv Boot Inspection:
        
        
            Regular inspection for tears and damage
        
     
    
    
        
            Engine Oil Type:
        
        
            Refer to manual for specific 2-stroke oil type and pre-mix ratio (e.g., API TC, JASO FD)
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 (refer to manual for precise specification)
        
     
    
    
        
            Common Wear Items:
        
        
            CVT belt wear, carburetor jetting issues, starter motor reliability, exhaust seal leaks
        
     
    
        
            Preventative Measures:
        
        
            Regular cleaning of the carburetor bowl, maintaining correct fuel/oil mixture, proper CVT belt care.