Polaris Sportsman 300 & 400 HO Service & Repair Manual 2009 Comprehensive Guide

Technical Scope and Coverage for the 2009 Polaris Sportsman 300 & 400 H.O.

• Covers 2009 Polaris Sportsman 300 and 400 H.O. ATV variants, including models A09LH27AX, A09LH27AZ, A09LH46AQ, A09LH46AX, and A09LH46AZ
• Official Polaris publication P/N 9921818, 9921822, 9921819, and 9921823, detailing the 2009 model-year service procedures
• Contains 161 technical specification tables, engine exploded-view diagrams, and detailed torque-sequence charts for the 300 and 400 H.O. engines
• Downloads to your account within seconds of checkout
• Permanent availability in your purchase account — no re-buy required
• Suitable for printing individual sections for shop-floor use
• Indexed PDF search covers every chapter and appendix
• This 2009 original manufacturer documentation remains the authoritative source for the 300 cc air-cooled and 455 cc liquid-cooled powertrain configurations

Engine Service and Component Documentation

The 2009 Polaris Sportsman 300 & 400 H.O. service manual provides a structured look at internal engine assemblies. Coverage spans top-end overhaul procedures, including valve clearance adjustments, cylinder head reconditioning, and camshaft timing. Detailed sections document the crankshaft, starting clutch assemblies, and oil pump systems, offering exploded views for the ES300PFE and EH460PLE engine platforms.

Additional chapters explain the maintenance of the liquid-cooling circuits, CVT transmission tuning, and chassis components like steering geometry and suspension preload. Understanding factory workshop documentation is structured effectively for both professional mechanics and owners.

Specification Highlights and Technical Reference

Technical data includes comprehensive torque tables covering bolt sizes from #10 to 1/2-inch and metric hardware. Engine data provides reference values for bore and stroke, compression ratios (9.2:1 for the 300; 10.1:1 for the 400 H.O.), and idle speed RPM settings. Electrical specifications detail alternator output at 250 watts and provide spark plug gap requirements.

Cylinder compression for the 300 is documented at 120–140 psi, while the 400 H.O. is listed at 50–90 psi. Transmission capacity for both models is documented at 20.3 oz. (592 ml) of AGL fluid. Intake valve clearance for the 2009 Polaris Sportsman 300 & 400 H.O. is listed at 0.15 mm in the valve specification table. This is an official 292-page Polaris OEM manual covering the 2009 Polaris Sportsman 300 and 400 H.O., documenting engine, chassis, and electrical specifications for the entire production range.

Document Reference: Polaris publication P/N 9921818, 9921822, 9921819, 9921823