Positioning:
The Polaris 400 2x4 ATV of 1995 was positioned as a capable and versatile recreational and utility ATV, appealing to a broad range of riders. It offered a balance of power, maneuverability, and durability for its time.
Competitors:
Competed against other manufacturers' 300-450cc class ATVs, such as Yamaha, Honda, Suzuki, and Kawasaki, vying for market share in the recreational and utility segments.
Vehicle Features:
2x4 drivetrain, liquid-cooled engine, automatic transmission, independent front suspension (IFS), rack systems for cargo. Known for its reliable performance and user-friendly operation.
Engine Mechanical:
Engine overhaul, top-end rebuild, bottom-end procedures, valve adjustments, piston and ring replacement, crankshaft and connecting rod service, camshaft service.
Fuel System:
Carburetor disassembly, cleaning, and adjustment; fuel pump service; fuel line inspection and replacement; fuel tank service.
Ignition System:
Spark plug specifications and replacement; ignition coil testing; stator and pickup coil service; CDI unit troubleshooting.
Cooling System:
Radiator service, fan operation, thermostat replacement, coolant specifications and flushing procedures.
Transmission And Drivetrain:
Automatic transmission service, clutch operation and adjustment, drive shaft maintenance, gearcase lubrication and service, differential service.
Suspension And Steering:
Front and rear suspension component inspection and replacement (shocks, springs, control arms), steering linkage service, wheel bearing maintenance.
Braking System:
Hydraulic brake system bleeding, brake pad and shoe replacement, caliper and master cylinder service, brake line inspection.
Electrical System:
Wiring diagrams, battery testing and replacement, starter motor service, lighting system troubleshooting, charging system analysis (stator, regulator/rectifier).
Chassis And Frame:
Frame inspection, lubrication points, fastener torque specifications.
Body And Plastics:
Panel removal and installation, fender and rack service.
Routine Maintenance:
Oil changes, filter replacements, air filter cleaning/replacement, spark plug checks, tire pressure, lubrication, chain adjustment (if applicable).
Diagnostic Procedures:
Step-by-step troubleshooting for common and uncommon problems across all systems.
Repair Procedures:
Detailed instructions for component removal, disassembly, inspection, repair, reassembly, and installation.
Overhaul Procedures:
Complete engine and transmission rebuild instructions.
Adjustment Procedures:
Carburetor idle speed and mixture, throttle cable, brake levers, clutch engagement.
Technical Specifications:
Torque values, clearances, fluid capacities, electrical values.
Depth:
Comprehensive, suitable for professional technicians and experienced DIY mechanics. Covers basic maintenance to full engine and transmission rebuilds.
Engine Type:
4-stroke, liquid-cooled, single-cylinder (Specific model designation may vary, often a Polaris-designed engine).
Displacement:
Approximately 375-400cc (Exact displacement for the 1995 400 2x4 needs to be confirmed from original Polaris specifications, but '400' is indicative).
Bore X Stroke:
Not specified in product data, but typical for this class would be around 80mm x 75mm.
Compression Ratio:
Not specified in product data, typically around 9.0:1 to 10.5:1.
Horsepower:
Estimated 20-25 HP (typical for this engine size and era).
Torque:
Not specified in product data.
Carburetor:
Single Mikuni or Keihin carburetor (Specific model number not provided in product data, but common for this era).
Fuel Type:
Unleaded gasoline
Fuel Capacity:
Approximately 3.5 - 4.5 gallons (standard for this class).
Oil Type:
SAE 10W-40 or 20W-50 motorcycle-specific or ATV oil (Manual will specify exact viscosity and API classification).
Oil Capacity:
Approximately 2.0 - 2.5 quarts with filter change (Manual will confirm exact capacity).
Spark Plug Type:
NGK or similar, specific model number will be in the manual (e.g., NGK CR7HSA or similar).
Spark Plug Gap:
Typically 0.6-0.8mm (Manual will provide exact specification).
Type:
Automatic (Continuously Variable Transmission - CVT with belt drive).
Drive System:
Shaft drive to rear axle (2x4 configuration).
Gearing:
Forward, Neutral, Reverse (F-N-R).
Clutch Type:
Automatic centrifugal clutch system.
Gear Oil Type:
Specialized gear oil or transmission fluid (Manual will specify exact type and viscosity, e.g., SAE 80W-90 GL-5).
Gear Oil Capacity:
Not specified in product data (Manual will confirm).
Length:
Not specified in product data (Typical mid-size ATV length around 70-75 inches).
Width:
Not specified in product data (Typical mid-size ATV width around 40-45 inches).
Height:
Not specified in product data (Typical mid-size ATV height around 42-45 inches).
Wheelbase:
Not specified in product data (Likely in the 45-50 inch range).
Dry Weight:
Not specified in product data (Likely around 500-550 lbs).
Payload Capacity:
Not specified in product data (Typical around 200-300 lbs for racks).
Towing Capacity:
Not specified in product data (ATVs of this era often had minimal or no official towing capacity rating).
Rollover Resistance:
Not applicable in standardized rating systems for ATVs of this era. Operator training is crucial.
Braking System:
Hydraulic disc brakes front and rear (standard for the 400 2x4 model). Parking brake mechanism.
Lighting:
Headlights, taillight, brake light.
Handlebar Design:
Grip design and throttle control for secure handling.
Operator Position:
Ergonomically designed seating and control layout.
Engine Oil Change:
Every 30-50 hours or annually, whichever comes first (Refer to manual for precise interval).
Air Filter Cleaning:
Every 10-20 hours or as needed depending on conditions (More frequent in dusty environments).
Spark Plug Inspection:
Every 30-50 hours.
Brake Fluid Flush:
Every 1-2 years.
Gear Oil Change:
Every 100-150 hours or annually.
Engine Oil:
SAE 10W-40 API SG or higher recommended. (Always verify with manual).
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (Verify specific type from manual).
Coolant:
Ethylene glycol based antifreeze with corrosion inhibitors. Mix 50/50 with distilled water. (Manual specifies type and freeze point).
Carburetor Clogging:
Common issue with older ATVs due to fuel degradation if left sitting. Requires regular cleaning and proper fuel stabilizer use.
Drive Belt Wear:
CVT drive belts can wear out over time and require replacement based on mileage or hours of use. Proper belt tension and alignment are crucial.
Electrical Connections:
Corrosion or loose connections in the electrical system can lead to intermittent faults. Regular inspection and dielectric grease are recommended.
Suspension Bushings:
Wear in suspension bushings can lead to play and reduced handling. These are typically serviceable parts.
Polarishistory:
Polaris has a long history in powersports, starting with snowmobiles and expanding into ATVs and motorcycles. They are known for innovation and rugged performance.
Atvdevelopment:
The 1995 400 2x4 represented an advancement in Polaris's ATV lineup, incorporating features like liquid cooling and IFS, moving towards more sophisticated and powerful machines.
Manufacturing Location:
Polaris vehicles are predominantly manufactured in the United States.
Production Years:
The Polaris 400 model line had various iterations and was produced for many years, with the 'Sportsman' branding becoming prominent.
