Segment:
Entry-level to mid-range All-Terrain Vehicle (ATV) / Utility Vehicle.
Target Audience:
Recreational riders, light utility work, farm use.
Competitors:
Honda Foreman, Yamaha Grizzly, Can-Am Outlander (lower displacement models).
Features:
Polaris's reputation for performance and durability, user-friendly operation, capable AWD system, comfortable ergonomics for its class.
Comprehensive Coverage:
Complete teardown and rebuild procedures, maintenance, troubleshooting, diagnostics, electrical systems, engine, transmission, chassis, bodywork.
Type:
Repair Service Manual
Engine:
Complete engine overhaul, top-end rebuild, bottom-end rebuild, cooling system, lubrication system, fuel delivery system, ignition system, exhaust system.
Transmission:
Automatic transmission (PVT - Polaris Variable Transmission) operation, maintenance, service, and common issues.
Drivetrain:
All-Wheel Drive (AWD) system, front and rear differentials, driveshafts, CV joints, clutch system.
Suspension And Steering:
Front and rear suspension components (shocks, springs, control arms), steering linkage, wheel bearings, universal joints.
Brakes:
Hydraulic brake system, brake fluid specifications, caliper service, brake pad replacement, bleeding procedures.
Electrical System:
Wiring diagrams, battery, starter, charging system, lighting, ignition switch, ECU (Engine Control Unit) basics, accessory circuits.
Body And Frame:
Fenders, body panels, seat, handlebars, racks, chassis components, fastener torque specifications.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, spark plug service, lubrication points, battery maintenance.
Troubleshooting:
Diagnostic flowcharts for common starting, running, and operational issues. Symptom-based troubleshooting guides.
Repair:
Detailed step-by-step repair procedures for all major mechanical and electrical components, including complete engine and transmission rebuilds.
Diagnostics:
Information on diagnosing electrical faults, engine performance problems, and drivetrain issues.
Depth:
Comprehensive, suitable for professional technicians and experienced DIY enthusiasts. Covers complete disassembly and reassembly.
Type:
4-stroke, liquid-cooled, SOHC
Bore X Stroke 300:
71.5 mm x 68.6 mm
Bore X Stroke 400:
83 mm x 69.5 mm
Compression Ratio 300:
10.2:1
Compression Ratio 400:
9.7:1
Horsepower 300:
Approx. 21 HP
Horsepower 400:
Approx. 28 HP
Torque 300:
N/A (manual will specify)
Torque 400:
N/A (manual will specify)
Fuel Delivery:
Carbureted (Keihin CVK)
Carburetor Size 300:
30mm
Carburetor Size 400:
34mm
Fuel Type:
Unleaded gasoline, 87 octane (minimum)
Ignition Type:
Electronic Ignition
Cooling Method:
Liquid-cooled
Engine Oil Type:
SAE 20W-50 Polaris 4-Stroke ATV Oil (or equivalent JASO MA certified)
Engine Oil Capacity W Filter:
1.8 L (1.9 US qt)
Final Drive Oil Type:
Polaris HP Synthetic Gearcase Lube
Final Drive Oil Capacity:
0.24 L (0.25 US qt)
Type:
Polaris Variable Transmission (PVT) Automatic
Drive System:
Shaft Drive, On-Demand All-Wheel Drive (AWD)
Gear Selection:
Park, Reverse, Neutral, Low, High
Engine Braking:
Integrated engine braking through PVT system
Pvt Belt Inspection Interval:
Every 100 hours or annually
Pvt Belt Replacement Criteria:
Inspect for wear, cracking, fraying, or damage. Replace if width is reduced by 3mm or more.
Atv Safety Standards:
Meets ANSI standards for recreational ATVs.
AWD System:
On-Demand All-Wheel Drive for enhanced traction.
Braking System:
Hydraulic disc brakes front and rear for reliable stopping power.
Lighting:
Dual 35W headlights, 8.2W brake/taillight.
Hand Guards:
Standard on some models for hand protection.
Operation Safety:
Manual provides critical safety warnings, recommended riding gear, and operation guidelines.
Initial Service:
First service typically at 20 hours or 1 month (refer to manual for exact specifics).
Engine Oil Change:
Every 100 hours or 6 months
Air Filter Cleaning:
Every 25 hours or 3 months (more frequently in dusty conditions)
Spark Plug Replacement:
Every 100 hours or 12 months
Transmission Oil Change:
Every 100 hours or 12 months
Coolant Type:
Polaris Premium Antifreeze/Coolant (ethylene glycol based, 50/50 mix with distilled water)
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid
Common Problems:
PVT belt wear, potential carburetor adjustments, occasional electrical connector issues, suspension wear over time.
Preventative Maintenance:
Adherence to the manual's service schedule is crucial for longevity and preventing common issues.
Importance:
Manual provides critical torque specifications for engine, drivetrain, suspension, and body fasteners for correct assembly and safety.
Polarise History:
Polaris Industries Inc. is a prominent American manufacturer of powersports vehicles, known for innovation and off-road capability.
Sportsman Lineage:
The Sportsman line has been a cornerstone of Polaris's ATV offerings for decades, emphasizing comfort, utility, and versatility. The 300/400 models represent a more accessible entry point into the Sportsman family.
Manufacturing Location:
Typically manufactured in USA or Mexico facilities by Polaris.
Sales Performance:
Sportsman models are consistently strong sellers, reflecting their broad appeal and reputation.