Yamaha YFM80 Moto-4 Badger and Raptor ATV (1985-2008) Service Repair Manual Description Clymer ATV repair manuals are written specifically for the do-it-yourself enthusiast. From basic maintenance to troubleshooting to complete overhaul Clymer manuals provide the information you need. The most important tool in your tool box may be your Clymer manual get one today.Every Clymer manual contains hundreds of original photographs and illustrations developed from a complete disassembly and assembly of a motorcycle. This in addition to extensive research allows Clymer to achieve an unmatched level of detail accuracy and clarity.The step-by-step instructions and two-column text with large print are user-friendly. Bold figure numbers make it easy to quickly match instructions with illustrations and photos. Thumb-tabbed chapters numbered table of contents and an extensive index make it possible to locate the desired section quickly. Contents This Yamaha ATV manual is 205 pages. QUICK REFERENCE DATA CHAPTER ONE / GENERAL INFORMATION Manual organization / Warnings cautions and notes / Safety / Serial numbers / Fasteners / Shop supplies / Basic tools / Precision measuring tools / Decimal place values / Electrical system fundamentals / Special tools / Basic service methods / Storage / Specifications CHAPTER TWO / TROUBLESHOOTING Operating requirements / Starting the engine / Engine will not start / Engine is difficult to start / Poor idle speed performance / Poor medium to high speed performance / Starting system / Charging system / Ignition system / Ignition system diagnosis / Fuel system / Engine overheating / Engine / Engine noises / Engine leak down test / Clutch / Transmission / Handling / Frame noise / Brakes CHAPTER THREE / LUBRICATION MAINTENANCE AND TUNE-UP Pre-ride checklist / Periodic lubrication / Engine oil change / Oil strainer screen / Final drive oil change / Control cable lubrication / Air filter / Cam chain adjustment / Valve clearance / Compression test / Spark plug / Spark arrestor / Ignition timing / Idle speed / Throttle lever adjustment / Speed limiter / Clutch / Chassis maintenance / Specifications CHAPTER FOUR / ENGINE TOP END Engine cooling / Engine removal / Intake manifold / Cylinder head / Cylinder / Rocker arm and camshaft / Valves and valve components / Piston / Piston rings / Specifications CHAPTER FIVE / ENGINE LOWER END Engine break-in / Engine removal / Engine installation / Oil pump and oil strainer / CDI magneto / Middle driven gear / Crankcase / Driven gear shim selection / Transmission / Crankshaft / Specifications CHAPTER SIX / CLUTCH AND DRIVE GEAR Clutch / Drive gear and starter clutch / Specifications CHAPTER SEVEN / TRANSMISSION AND SHIFTER Transmission / Shift shaft and stopper lever / Specifications CHAPTER EIGHT / FUEL AND EXHAUST SYSTEMS Carburetor / Carburetor adjustments / Fuel tank / Exhaust / Specifications CHAPTER NINE / ELECTRICAL SYSTEM Electrical component replacement / Starting system / Ignition system / Ignition coil test / Pickup coil test / Source coil test / Main switch test / Engine top switch test / Charging system / Specifications CHAPTER TEN / FRONT SUSPENSION WHEELS AND TIRES Front wheel / Front wheel bearings / Front shock absorber and lower arm / Wheel alignment / Handlebar / Steering shaft / Steering knuckle / Tie rod / Tires and wheel / Specifications CHAPTER ELEVEN / REAR AXLE REAR SUSPENSION AND FINAL DRIVE Rear wheel and wheel hub / Rear shock absorber / Rear swing arm and drive shaft / Final drive/rear hub / Final drive and axle inspection / Spec...