Model:
Sportsman 400 HO / 500 HO / 500 HO Touring / 500 Forest Tractor EFI
Model Variant:
400 HO, 500 HO, 500 HO Touring, 500 Forest Tractor EFI
Chassis Code:
A11AA/AC/AD/AE (varies by model)
Market Segment:
Mid-size utility ATVs, popular for recreational riding, light work, and trail exploration.
Key Competitors:
Yamaha Grizzly, Arctic Cat 500/550, Can-Am Outlander 500/570, Honda Foreman.
Vehicle Strengths:
Polaris Sportsman line is known for its Independent Rear Suspension (IRS) offering a comfortable ride, robust engine options (especially the 500 HO), and versatility for various terrains and tasks.
Models Covered:
2011 Polaris Sportsman 400 HO ATV, 2011 Polaris Sportsman 500 HO ATV, 2011 Polaris Sportsman 500 HO Touring ATV, 2011 Polaris Sportsman 500 Forest Tractor EFI ATV
Estimated Page Count:
Refer to specific manual for exact count; typically 500+ pages for comprehensive service manuals
Manual Type:
Repair Manual / Service Manual / Workshop Manual
Engine Systems:
General Information, Engine Removal and Installation, Fuel System, Lubrication and Cooling System, Engine Specifications, Intake & Exhaust
Drivetrain Systems:
Transmission, Drive Chain & Sprockets
Chassis Systems:
Steering System, Shocks, Body Work
Electrical Systems:
Electrical System
General Maintenance:
Routine Maintenance, Advanced Troubleshooting
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, brake system checks, suspension lubrication, drive chain adjustment and lubrication, coolant checks and replacement.
Repair Procedures:
Engine overhaul, fuel injection system diagnosis and repair, carburetor adjustment (if applicable to specific variant), transmission repair, steering linkage replacement, shock absorber service, electrical component testing and replacement, cooling system flushes and component replacement.
Troubleshooting Procedures:
Diagnostic procedures for common starting issues, running problems, electrical faults, fuel system issues, and drivetrain malfunctions.
Diagnostic Capabilities:
Covers diagnostic trouble codes (DTCs), wiring diagrams for electrical troubleshooting, and systematic approaches to identifying component failures.
Rebuild Scope:
Includes detailed instructions for engine teardown, component inspection, measurement specifications for critical parts, and reassembly procedures for complete engine and transmission rebuilds.
Engine Type:
4-stroke, SOHC, 4-valve, Single Cylinder
Engine Displacement:
499cc (for 500 HO models), 375cc (estimated for 400 HO models - often Polaris uses 'HO' for higher output of smaller displacement)
Horsepower Estimate:
Approx. 30-35 HP for 500 HO models (specific dyno figures vary)
Torque Estimate:
Approx. 30-35 lb-ft for 500 HO models (specific figures vary)
Fuel Delivery:
Electronic Fuel Injection (EFI) for all listed models
Cooling Method:
Liquid-cooled
Safety Considerations:
As with all ATVs, proper safety gear (helmet, eye protection, gloves, boots, long pants) and adherence to safe riding practices are paramount. This manual focuses on mechanical and operational safety.
Braking System:
Hydraulic disc brakes (front and rear)
Display Features:
Digital instrument cluster displaying speed, RPM, odometer, trip meter, fuel level, gear indicator, AWD status, and diagnostic codes.
Engine Braking:
Equipped with Polaris Variable Transmission (PVT) featuring engine braking for downhill control.
Battery Charging:
Standard 12V battery system with charging system (stator/alternator).
Oil Change Interval:
Typically every 100 hours or 1 year, whichever comes first. Check specific manual for exact recommendation.
Air Filter Maintenance:
Clean every 50 hours or annually; replace as needed.
Spark Plug Service:
Inspect every 100 hours or annually; replace as needed.
Engine Oil Type:
Polaris Synthetic 2W-50 PS-4 or equivalent API SG or higher (check manual for specific viscosity and certification).
Coolant Type:
Polaris Premium All-Season Coolant or equivalent ethylene glycol-based coolant with corrosion inhibitors (typically 50/50 mix with distilled water).
Gearcase Oil Type:
Polaris Synthetic Gearcase Lubricant or equivalent 75W-90 Synthetic Gear Oil (GL-5 rated).
Common Wear Items:
Drive belts (PVT system), wheel bearings, tie rod ends, ball joints, brake pads, and suspension bushings are common wear items subject to regular inspection and replacement.
Potential Failures:
EFI system components (fuel pump, injectors) can be prone to issues if contaminated fuel is used. Overheating can occur if the cooling system is not maintained. CVT belt failure can result in loss of power.
Brand Origins:
Polaris Industries Inc. is a leading American manufacturer of powersports vehicles, founded in 1954.
Sportsman Line History:
The Sportsman line has been a cornerstone of Polaris' ATV offerings, continuously evolving in performance, comfort, and utility since its introduction. The 400 and 500 HO models represent a well-established and popular segment of their utility ATV lineup.
