Service manual for the 2004 to 2009 Yamaha YFZ 450S ATV. Chapters are: - General Information - Routine Maintenance - Engine Installation & Removal - Fuel System - Lubrication & Cooling Systems - Combustion Specs - Transmission & Gear Box - Wheel & Steering System - Drive Train - Body & Fender Assembly - Frame & Sub frame - Intake & Exhaust - Electrical System - Advanced Level Troubleshooting Book marked chapters for easy navigation allowing you to identify exact repair service procedures in the quickest time possible. Notes, cautions and warnings throughout each chapter pinpoint critical service information. Numbered instructions guide you through every repair procedure in a step-by-step fashion. Bold figured numbers help you quickly match illustrations with instructions. Detailed illustrations, exploded diagrams, drawings and photos guide you through every service repair procedure. Numbered table of contents easy to use so that you can find the information you need fast. Manual Language: English File Format: PDF File Delivery: PDF (Instant Download) Pages: 482 To purchase this repair manual just click on the green instant download button at the upper left hand corner of this page. After purchasing just download it to your computer to save it and print pages from it whenever you need it. 2004 2005 2006 2007 2008 2009 04 05 06 07 08 09 YFZ 450S carburettor kits, oil filters, pistons, gaskets, brakes, sprockets, chains, wheel bearings, tires, tyres, lamps, bulbs, guards, gearbox, throttle, handlebar, seat, rack, start, kill, switch, button, tank, fuel, gasoline, petrol, diesel, quad, polaris, Yamaha, rings, wheels, steering, wheels, electrical, suspension, exhaust, body, muffler, drivetrain, con rod, cdi, filter, spark plug, radiator, starter, stator, water pump, recoil, thermostat, intake, head, cams, clutch, cv joint, drive belt, transfer case, chain, sprocket, hub, diff, differential, pegs, cover, guards, skid plate, decals, oil tank, scoop charging clutch viscosity length width weight plate fluid pump cooler side cover fuel gas tank body panels system information frame schedule chart seat line operation lubrication diy removal remove installation install torque specs specifications performance spring front rear wheel fender fenders plastic plastics idle speed guide guides psi illustration gearshift linkage fuse kickstart kick start kicker switch switches downloadable overhaul rebuild parts data fix problem problems air reference online oversize oversized over size adjust instruction instructions drive four electronic trouble error code codes fuel pump injection workshop brakes brake pads rotor rotors tire tires motor cylinder starter starting schematic axle boot boots jug head valve clearance valves piston clutch transmission cam cams camshaft crank crankshaft connecting conrod rod stator magneto flywheel suspension strut struts swinger swingarm ignition coil no spark plug wiring diagram light lights troubleshoot troubleshooting radiator coolant change replace fix which engine oil carb carburettor bore stroke displacement compression ratio train intake exhaust muffler throttle cable cables primary reduction gear shaft main slow pilot jet mixture screw regulator rectifier charge hydraulic battery electric