Polaris Sportsman 400, 450, & 500 1996-2010 models include: Sportsman 400 2001-2005; Sportsman 450 2006-2007; Sportsman 450 Browning Edition 2006; Sportsman 500 1996-2010; Sportsman 500 RSE 2000-2002; Sportsman 500 DUSE 2001-2002; Sportsman 500 HO 2001-2006, 2008-2010; 500 X2 2006-2010; Sportsman 500 Touring 2008-2010; Worker 500 1997-2001; Xplorer 500 1997.
Contents include: General Information- Troubleshooting- Lubrication, Maintenance and Tune up- Engine Top End- Engine Lower End- Carburetor and Fuel System- Fuel Injection System- Cooling system- Clutch and Drive Belt- Transmission- Front Drive System- Electrical System- Suspension and Steering- Rear Suspension and Final Drive- Brakes- Body and Frame- Index- Coloring Wiring Diagrams. 
If you’re getting this manual, you’ve probably bought other Clymer manuals, so no need to tell you how good it is. This bike has some nuances, so I’d definitely glad I got this book as it’s saved me some time. Great detail, no knocks other than the price, but still worth it.
The information is very detailed and easy to use, but the book binding is terrible. Mine fell apart within days.
My husband purchased a used 4 wheeler and needed the repair manual. This is just what he wanted and Amazon had it! He is very happy!