Market Position:
The Polaris Scrambler series (400 and 500 models) from 1999-2000 represented Polaris's offering in the sport/utility ATV segment, known for its capable chassis and Polaris's evolving engine technology.
Competitive Analysis:
Competed against models from manufacturers like Yamaha (Warrior, Big Bear), Honda (FourTrax series), Suzuki (QuadSport, KingQuad), and Kawasaki (Bayou, Prairie) in the late 1990s ATV market.
Key Features:
The Scrambler 400 and 500 models were characterized by their agile handling, powerful two-stroke (400) and four-stroke (500) engines, and the availability of both 2WD and 4WD configurations, making them versatile for recreational riding and light work.
Specific Machines Covered:
1999 Polaris Scrambler 400 ATV, 1999 Polaris Scrambler 500 ATV, 2000 Polaris Scrambler 400 4x2 ATV, 2000 Polaris Scrambler 400 4x4 ATV, 2000 Polaris Scrambler 500 ATV
General Topics:
General Information, Routine Maintenance, Engine Removal and Installation, Fuel System, Lubrication and Cooling System, Engine Specifications, Transmission, Drive Chain & Sprockets, Steering System, Shocks, Body Work, Intake & Exhaust, Electrical System, Advanced Troubleshooting
Page Count:
Not Specified, Digital Download
Manual Type:
Repair Manual, Service Manual, Workshop Manual, Owner's Manuals, Parts Catalogs
Engine Systems:
Engine assembly, disassembly, tuning, carburetor adjustment, cooling system (liquid-cooled), lubrication, oil change procedures, internal component specifications.
Drivetrain Systems:
Transmission overhaul, clutch operation, drive chain maintenance, sprocket replacement, differential (if applicable), axle inspection and repair.
Chassis Systems:
Suspension (shocks, springs, linkages), steering system (tie rods, steering shaft, handlebars), frame inspection, wheel bearing service, brake system (hydraulic, disc/drum), and tire specifications.
Electrical Systems:
Wiring diagrams, battery service, lighting system, ignition system (CDI, spark plugs), charging system (stator, regulator/rectifier), starter motor, and troubleshooting electrical faults.
Fuel And Exhaust Systems:
Fuel tank removal and installation, fuel lines, fuel filter, carburetor cleaning and adjustment, exhaust system components, and emission control information (if applicable).
Bodywork And Cosmetics:
Body panel removal and installation, seat maintenance, fender repair, graphics and decal application (general guidance).
Maintenance Procedures:
Scheduled maintenance intervals, fluid level checks and top-offs, filter replacements (air, oil, fuel), spark plug service, chain adjustment and lubrication, brake pad inspection, suspension adjustments.
Repair Procedures:
Step-by-step guides for component removal, repair, and reinstallation for all major systems; engine rebuild procedures, carburetor jetting and tuning, transmission diagnostics and repair, electrical component replacement, suspension rebuild.
Troubleshooting Guides:
Diagnostic flowcharts for common starting issues, performance problems, electrical faults, and driveability concerns; identification of symptoms and their likely causes.
Technical Depth:
Comprehensive coverage suitable for home mechanics and professional technicians, including detailed specifications, torque values, clearances, and diagnostic information.
Engine Type:
Liquid-cooled, 2-stroke, single-cylinder
Bore X Stroke 400:
68 mm x 70 mm (approx.)
Carburetor 400:
Mikuni VM38 (typical)
Cooling System 400:
Liquid-cooled with fan assist
Engine Type:
Liquid-cooled, 4-stroke, single-cylinder, SOHC
Bore X Stroke 500:
92 mm x 75 mm (approx.)
Carburetor 500:
Mikuni BSR42 (typical)
Cooling System 500:
Liquid-cooled
Horsepower 400:
Approx. 34-38 HP (Varies by tuning and conditions)
Horsepower 500:
Approx. 32-36 HP (Varies by tuning and conditions)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approx. 3.7 gallons (14 liters)
Length:
Approx. 74-77 inches (188-195 cm)
Width:
Approx. 46-48 inches (117-122 cm)
Height:
Approx. 47-49 inches (119-124 cm)
Dry Weight:
Approx. 490-550 lbs (222-250 kg) depending on model and configuration
Ground Clearance:
Approx. 8-10 inches (20-25 cm)
Safety Ratings:
N/A (ATVs typically do not have NHTSA safety ratings like cars)
Active Safety Features:
Front and rear hydraulic disc brakes, handlebar controls, aggressive tire tread for traction.
Passive Safety Features:
Integrated lighting (headlights, taillight), durable chassis construction, integrated footwells and fenders.
Oil Change Interval:
Typically every 20-40 operating hours or annually. Refer to manual for precise intervals based on usage.
Air Filter Cleaning:
Check and clean every 10-20 operating hours, replace as needed.
Spark Plug Replacement:
Replace every 100-200 operating hours or as per manual recommendations.
Drive Chain Lubrication:
Lubricate and adjust chain every 10-15 operating hours or after riding in wet/muddy conditions.
Engine Oil Type 400:
2-stroke engine oil, API-TC or JASO FD certified, pre-mix or oil injection compatible.
Engine Oil Type 500:
SAE 10W-40 or 20W-50 motorcycle or ATV specific 4-stroke engine oil.
Coolant Type:
Ethylene glycol-based antifreeze with corrosion inhibitors, mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Gearcase Oil Type:
SAE 80W-90 hypoid gear oil.
Known Issues:
Common issues for this era of Polaris ATVs can include carburetor performance tuning, CVT belt wear, occasional ignition system issues (especially with the 2-stroke engines), and wear in the suspension and steering components due to off-road use.
Brand Heritage:
Polaris Industries has a long history in powersports, starting with snowmobiles and expanding into ATVs, UTVs, and motorcycles. They are known for innovation and performance in the off-road vehicle market.
Model Evolution:
The Scrambler line evolved from earlier Polaris sport ATVs, aiming to blend performance with utility. The introduction of the 500cc 4-stroke engine marked a significant step in power and reliability for the brand in this class. The 400cc 2-stroke offered a lighter, more aggressive feel.
Production Period:
The 1999-2000 model years represent a specific generation of the Scrambler, with updates in chassis design, engine performance, and features over previous and subsequent iterations.
