Segment:
Entry-level to mid-range utility ATV
Target Audience:
Recreational riders, light utility users, farmhands
Key Competitors:
Honda FourTrax, Yamaha Grizzly 350/450, Can-Am Outlander 400 (earlier models)
Engine Type:
4-stroke, SOHC, liquid-cooled
Drivetrain:
On-Demand All-Wheel Drive (AWD)
Suspension:
Independent Front Suspension (IFS), Dual A-Arm Rear Suspension
Braking:
Hydraulic disc brakes front and rear
Engine Operation:
Engine starting procedures, operation, break-in, cooling system
Fuel System:
Fuel requirements, handling and storage
Transmission Operation:
Automatic transmission operation, gear selection (High, Low, Neutral, Reverse)
Drivetrain Operation:
All-Wheel Drive (AWD) engagement, axle operation
Braking System:
Brake operation, brake fluid checks
Steering System:
Handlebar operation, steering linkage checks
Suspension System:
Front and rear suspension operation, pre-load adjustment (if applicable)
Electrical System:
Lighting operation, battery care, fuse identification
Tires And Wheels:
Tire pressure recommendations, wheel nut torque specifications
Carrying Capacity:
Rack weight limits, towing capacity (if applicable)
Pre Ride Inspection:
Detailed checklist for safe operation before riding
Basic Maintenance:
Engine oil level checks, air filter inspection, lubrication points
Troubleshooting Guides:
Basic troubleshooting for common operational issues
Safety Precautions:
Riding safety, gear recommendations, environmental awareness
Storage Procedures:
Short-term and long-term storage recommendations
Depth Level:
Owner-level maintenance and operation
File Type:
Portable Document Format (PDF)
Searchability:
Likely searchable text content, facilitating quick information retrieval
Print Capability:
Printable on any standard printer, allowing for physical copies
Binding:
N/A (Digital format, no physical binding)
Paper Type:
N/A (Digital format, no physical paper type)
Engine Family:
Polaris ProStar
Engine Displacement:
375cc
Engine Configuration:
Single-cylinder, 4-stroke, SOHC, 2-valve
Cooling System:
Liquid-cooled
Horsepower Estimate:
Approximately 24-28 HP (estimated, exact figures vary by source)
Torque Estimate:
Estimated 22-25 lb-ft (estimated)
Fuel Delivery:
Carburetor (likely Mikuni, specific model not listed but typical for this era)
Fuel Type:
Unleaded gasoline, 87 octane (minimum)
Fuel Capacity:
3.4 gallons (12.9 Liters) including reserve
Transmission Type:
Automatic (PVT - Polaris Variable Transmission)
Gear Selection:
High, Low, Neutral, Reverse
Drive Modes:
2WD/AWD selectable
Final Drive:
Shaft Drive, Sealed Chain
Crash Test Ratings:
N/A (ATVs are not subjected to automotive-style crash tests)
Braking System Type:
Hydraulic disc brakes (front and rear)
Drivetrain Engagement:
On-Demand AWD for enhanced traction
Roll Over Protection:
Handlebar for rider control, no integrated roll cage on standard models
Lighting:
Dual 35W headlights, 8W brake/taillight
Seat Belt:
N/A (rider uses body position and helmet)
Display Panel:
Digital gauge cluster displaying speed, RPM, odometer, trip meter, fuel level, AWD indicator, 2WD/4WD indicator, gear selection, engine hour meter.
Traction Control:
No dedicated electronic traction control; relies on mechanical AWD system.
Connectivity Features:
N/A (No Bluetooth or smartphone integration on this model year).
Engine Oil Change:
Every 100 hours or annually (whichever comes first). Check manual for specific mileage correlation.
Air Filter Cleaning:
Inspect every 20 operating hours, clean or replace as needed. More frequently in dusty conditions.
Spark Plug Replacement:
Recommended every 1-2 years or as per manual recommendations.
Transmission Oil Change:
Check manual for specific intervals and procedures for the PVT system.
Engine Oil Type:
SAE 5W-50 Synthetic Oil (check manual for exact specification and API rating).
Engine Oil Capacity:
Approximately 2.1 US quarts (2.0 Liters) with filter change. Verify in manual.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid. Verify in manual.
Coolant Type:
Ethylene glycol-based antifreeze (50/50 mix with distilled water). Verify in manual for specific type.
Common Wear Items:
Brake pads, tires, suspension bushings, drive belts (PVT).
Potential Electrical Issues:
Battery terminal corrosion, stator issues (less common but possible).
Fuel System Maintenance:
Carburetor gumming if fuel sits for extended periods, requiring cleaning.
Polarissportsman Legacy:
Polaris has a long history in powersports, with the Sportsman line being a cornerstone of their ATV offerings, known for ruggedness and utility.
Sportsman 400 Evolution:
The Sportsman 400 has been a consistent model in Polaris's lineup, evolving with engine technology, suspension improvements, and rider comfort features over its production run. The 2008 model represents a mature iteration of this platform.
Manufacturing Location:
Primarily manufactured in the United States by Polaris Industries.
