Segment:
Entry-to-mid-level utility ATV segment
Target Audience:
Recreational riders, hunters, light agricultural use
Key Competitors:
Yamaha Grizzly 350/450, Honda Foreman 400/450, Kawasaki Brute Force 300/400
Powertrain:
Known for its reliable, liquid-cooled, carbureted engine and Polaris's capable AWD system.
Suspension:
Independent front suspension with MacPherson struts, and a dual A-arm rear suspension (specifics may vary slightly by sub-model).
Utility:
Designed for versatility with front and rear racks for cargo carrying.
Manual Value Proposition:
Provides essential information for maintaining and repairing the 2009 Sportsman 400, empowering owners to perform service and reduce reliance on costly dealer repairs.
Engine:
Complete engine overhaul, diagnostics, lubrication, cooling, fuel delivery, ignition, starting, charging
Transmission:
PVT (Polaris Variable Transmission) belt replacement, clutch inspection, gearbox maintenance, final drive
Drivetrain:
All-wheel drive system (AWD), driveshafts, CV joints, differential maintenance
Suspension:
Front and rear suspension components, shock absorbers, bushings, bearings, steering linkage
Brakes:
Hydraulic brake system, brake pads, rotors, calipers, master cylinder, bleeding procedures
Electrical:
Wiring diagrams, battery, starter, alternator, lighting system, ignition switch, fuses, relays, accessories
Fuel System:
Carburetor adjustment/cleaning, fuel pump, fuel lines, fuel filter
Body And Frame:
Body panel removal/installation, chassis components, racks, guards
Routine Maintenance:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, lubrication points
Troubleshooting:
Diagnostic charts, common problem identification, step-by-step diagnostic procedures
Repair:
Detailed disassembly and reassembly instructions for all major components and systems
Adjustment:
Carburetor, throttle cable, brake levers, suspension settings
Depth:
Comprehensive, suitable for professional technicians and experienced DIY mechanics. Includes detailed specifications and torque values.
Engine Type:
4-stroke, liquid-cooled, SOHC
Engine Displacement:
375cc (approximate)
Bore X Stroke:
Specifications typically detailed in manual (e.g., 84mm x 68mm)
Cylinders:
1 (Single-cylinder)
Valvetrain:
SOHC (Single Overhead Cam)
Horsepower:
Estimated 20-25 HP (specific dyno figures vary, manual will provide official specs)
Torque:
Specifications typically detailed in manual
Fuel Delivery:
Carburetor (likely Mikuni or Keihin, specific model in manual)
Fuel Type:
Unleaded gasoline, 87 octane recommended
Fuel Tank Capacity:
Approximately 3.25 US gallons (12.3 liters)
Transmission Type:
Automatic PVT (Polaris Variable Transmission) with Engine Braking
Drive Modes:
High, Low, Neutral, Reverse, Park
Clutch:
Primary and secondary clutch system with belt drive
Engine Braking:
Integrated engine braking for downhill control
Gear Reduction:
Yes, for low-range operation
Length:
Approximately 82 inches (208.3 cm)
Width:
Approximately 46 inches (116.8 cm)
Height:
Approximately 48 inches (121.9 cm)
Wheelbase:
Approximately 50.5 inches (128.3 cm)
Ground Clearance:
Approximately 11 inches (27.9 cm)
Front Rack Capacity:
Typically 50 lbs (22.7 kg)
Rear Rack Capacity:
Typically 100 lbs (45.4 kg)
Dry Weight:
Approximately 567 lbs (257.2 kg)
Towing Capacity:
Typically 1,500 lbs (680.4 kg)
Gcvwr:
Specifications detailed in manual
Crash Test Ratings:
Not applicable for ATVs in the same way as passenger vehicles; focus is on structural integrity and safe operation.
AWD System:
On-Demand AWD for enhanced traction
Braking System:
Hydraulic disc brakes on all wheels
Handlebar Design:
Designed for control and rider comfort
Lighting:
Dual headlights, brake light/taillight
Operator Safety Considerations:
Emphasis on wearing appropriate safety gear (helmet, goggles, protective clothing) as outlined in the manual.
Display:
Basic LCD display providing speed, odometer, trip meter, fuel level, and gear indicator.
Traction Control:
On-demand AWD system provides enhanced traction.
Storage:
Integrated front and rear racks for accessory storage and mounting.
Engine Oil Change:
Every 100 hours or annually (refer to manual for exact interval based on usage)
Gearbox Oil Change:
Refer to manual, typically annually or every 100-200 hours
Air Filter Cleaning:
Regularly, especially in dusty conditions; refer to manual for cleaning procedures and replacement intervals.
Spark Plug Replacement:
Refer to manual, typically every 1-2 years or based on condition
Transmission Belt Inspection:
Inspect annually or every 100 hours for wear and damage; replacement intervals vary based on usage and condition.
Engine Oil Type:
Polaris Synthetic 10W-50 (or equivalent SAE 10W-50 API SG or higher rated oil)
Engine Oil Capacity:
Approximately 2.0 quarts (1.9 liters) with filter change
Gearbox Oil Type:
Polaris AGRI-PL 2-Cycle Oil (or equivalent high-quality 2-stroke oil meeting Polaris specifications)
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid
Coolant Type:
Ethylene glycol-based antifreeze with corrosion inhibitors (e.g., Polaris Premium ATV Oil or equivalent)
Common Wear Items:
PVT belt wear, wheel bearing issues, suspension bushings, occasional starter solenoid failure. Refer to manual for detailed troubleshooting.
Carburetor Cleaning:
Periodic carburetor cleaning may be required due to fuel quality or sediment.
AWD Actuator:
The AWD actuator can sometimes require cleaning or servicing.
Polarishistory:
Polaris Industries, founded in 1954, is a leading manufacturer of powersports vehicles, including ATVs, snowmobiles, and motorcycles.
Sportsmanline:
The Sportsman line has been a cornerstone of Polaris's ATV offerings, known for its comfort, utility, and capability. The 400 model represents a balance of power and value within the range.
Manufacturing Location:
Primarily manufactured by Polaris in the USA.
Sales Performance:
The Sportsman 400 has historically been a popular model, contributing significantly to Polaris's market share in the utility ATV segment.
