Model:
Sportsman Explorer
Variant:
400 4x4 / 500 4x4
Chassis Code 400:
A00CH42AA, A00CH42AD, A00CH42AE, A00CH42AF, A00CH42AK, A00CH42AL
Chassis Code 500:
A00CH50AA, A00CH50AC, A00CH50AD, A00CH50AE, A00CH50AF, A00CH50AK, A00CH50AL
Generation:
First Generation (1996-2003)
Atv Segment:
Utility ATV, designed for work, recreation, and trail riding.
Target Audience:
Owners of Polaris Sportsman Explorer 400 and 500 4x4 models seeking to perform maintenance and repairs.
Key Competitors Era:
Honda Foreman, Yamaha Kodiak, Kawasaki Prairie during the late 1990s and early 2000s.
Versatility:
Known for its robust chassis, independent rear suspension (IRS) on later models, and reliable 4x4 system.
Durability:
A workhorse ATV appreciated for its build quality and ability to handle demanding terrain.
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures.
Fuel System:
Carburetor tuning and rebuilding, fuel pump, fuel lines, and fuel tank maintenance.
Cooling System:
Radiator, fan, coolant flushing, and thermostat replacement.
Exhaust System:
Muffler, exhaust pipes, and catalytic converter inspection and replacement.
Drivetrain 4X4:
Detailed coverage of the 4-wheel drive system, including differentials, driveshafts, and engage/disengage mechanisms.
Transmission Atv:
Automatic transmission (PVT - Polaris Variable Transmission) operation, maintenance, and repair.
Suspension System:
Front and rear suspension components, shocks, bushings, and wheel alignment.
Steering System:
Steering column, tie rods, knuckles, and rack and pinion maintenance and adjustment.
Braking System:
Hydraulic brake system, caliper, rotor, brake lines, and brake fluid specifications.
Electrical System:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), ignition system, lighting, and starter motor.
Bodywork Chassis:
Frame inspection, body panel removal/installation, fenders, and racks.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, air filter cleaning/replacement, lubrication points.
Troubleshooting Guides:
Diagnostic flowcharts and symptom-based troubleshooting for common issues.
Rebuild Procedures:
Detailed steps for engine, transmission, and differential rebuilds.
Component Replacement:
Step-by-step instructions for replacing major and minor components.
Wiring Diagrams:
Comprehensive electrical schematics for all model years and configurations.
Torque Specifications:
Precise torque values for all critical fasteners.
Depth Level:
Comprehensive, covering everything from basic maintenance to full engine and drivetrain rebuilds.
Diagnostic Capabilities:
Includes diagnostic procedures for electrical faults, fuel system issues, and mechanical problems.
Special Tool Requirements:
Lists any specialized tools required for specific repair procedures.
Engine Type 400:
4-stroke, Single-Cylinder, Liquid-Cooled (typically OHV)
Displacement 400:
Approximately 375cc to 400cc (varies slightly by specific sub-model/year)
Engine Type 500:
4-stroke, Single-Cylinder, Liquid-Cooled (typically OHV)
Displacement 500:
Approximately 499cc to 500cc (varies slightly by specific sub-model/year)
Horsepower Range:
Estimated 25-35 HP (depending on engine displacement and specific tuning)
Torque Characteristics:
Designed for strong low-end and mid-range torque for pulling and climbing.
Fuel Delivery:
Carburetor (e.g., Mikuni carburetors are common on these models)
Fuel Type:
Unleaded gasoline (87 octane recommended)
Oil Type:
SAE 20W-50 or 10W-40 motorcycle/ATV specific engine oil
Oil Capacity:
Approximately 2.0-2.5 quarts (refer to manual for exact specification and filter type)
Transmission Type:
Automatic (Polaris Variable Transmission - PVT)
Drive System:
Shaft Drive, 4WD
Gear Selection:
High, Low, Neutral, Reverse, Park
Engagement Mechanism:
On-Demand All-Wheel Drive (AWD) activation, typically electronic engagement.
Belt Maintenance:
PVT utilizes a drive belt, requiring periodic inspection and replacement for optimal performance.
Length:
Approx. 81-83 inches (varies by specific model year)
Width:
Approx. 46-48 inches (varies by specific model year)
Height:
Approx. 47-49 inches (varies by specific model year)
Dry Weight:
Approx. 600-650 lbs (varies by specific model year and features)
Towing Capacity:
Typically rated around 1,225 lbs.
Rack Capacity Front:
Approx. 90 lbs
Rack Capacity Rear:
Approx. 180 lbs
Atv Safety Standards:
Designed to meet industry safety standards for ATVs of its era.
Braking System:
Hydraulic disc brakes on all wheels for effective stopping power.
4Wd System:
On-Demand 4WD provides enhanced traction in challenging conditions.
Chassis Design:
Sturdy frame construction contributes to rider stability.
Ergonomics:
Considered seating position and handlebar placement for control.
Engine Oil Change:
Every 50-100 hours or annually (whichever comes first).
Air Filter Cleaning:
Every 20-40 hours of operation or as needed based on operating conditions.
Spark Plug Inspection:
Every 100 hours or annually.
Belt Inspection:
Every 50-100 hours, check for wear, cracks, and proper tension.
Engine Oil Spec:
SAE 20W-50 API SG or higher, or SAE 10W-40 for colder climates (consult manual for exact OEM recommendation).
Brake Fluid Spec:
DOT 3 or DOT 4 hydraulic brake fluid.
Gearcase Oil Spec:
Polaris Demand Drive Plus or compatible SAE 80W-90 gear oil for front differential.
Transmission Fluid Spec:
Specific ATV transmission fluid or high-quality synthetic 20W-50 engine oil (confirm with manual).
Drive Belt Wear:
Drive belts can wear prematurely if not properly maintained or if subjected to abuse.
Carburetor Fouling:
Carburetors can become fouled with age or poor fuel quality, affecting idle and performance.
Electrical Connector Corrosion:
Outdoor exposure can lead to corrosion in electrical connectors, causing intermittent issues.
Suspension Bushings:
Wear and tear on suspension bushings can lead to a 'clunky' ride and alignment issues.
Polaris History:
Polaris Industries has a long-standing reputation for manufacturing ATVs, snowmobiles, and other powersports vehicles.
Sportsman Lineage:
The Sportsman line is a cornerstone of Polaris's ATV offerings, known for its comfort, capability, and utility.
Explorer Variant:
The Explorer variant typically indicated enhanced features or a slightly more rugged/utility-focused design within the Sportsman family.
Production Period:
1996-2003 represents the first generation of the Sportsman Explorer 400/500 4x4 models.
