Yamaha XT125-250 Motorcycle (1980-1984) Service Repair Manual Description Clymer Manuals motorcycle maintenance troubleshooting and repair shop service manual.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 vintage motorcycle manual is 328 pages. QUICK REFERENCE DATA CHAPTER ONE / GENERAL INFORMATION Manual organization / Saervice hints / Safety first / Expendable supplies / Shop tools / Emergency tool kits / Troubleshooting and tune-up equipment / Specifications CHAPTER TWO / TROUBLESHOOTING Engine / Starting difficulties / Poor performance / Clutch and transmission / Drive train / Chassis / Brakes / Electrical system / Charging system / Lighting / Fuses / Wiring CHAPTER THREE / LUBRICATION MAINTENANCE AND TUNE-UP Routine checks / Pre-checks / Service intervals / Tires and wheels / Crankcase breather hose / Battery / Periodic lubrication / Engine oil and filter change / Front fork oil change / Brake cable lubrication / Speedometer cable lubrication / Periodic maintenance / Drive chain cleaning inspection and lubrication / Throttle adjustment / Decompression cable adjustment (XT250) / Fuel shutoff valve and filter / Spark arrester cleaning / Air cleaner service / Tune-up / Cylinder head fastener torque Valve clearance adjustment / Camshaft chain tensioner adjustment / Spark plug Ignition timing / Caburetor idle mixture / Carburetor idle speed adjustment / Storage / General specifications / Serial numbers / Parts replacement / Specifications CHAPTER FOUR / ENGINE Engine principles / Servicing engine in frame / Engine removal installation / Cylinder head / Camshaft and rocker arms / Camshaft chain / Valves and valve components / Cylinder / Piston and piston pin / Piston rings / Oil pump / Primary drive and balancer gears / Crankcase and crankshaft / Kickstarter / Break-in / Specifications CHAPTER FIVE / CLUTCH AND TRANSMISSION Clutch / Clutch cable / External shift mechanism / Drive sprocket / Transmission and internal shift mechanism / Specifications CHAPTER SIX / FUEL EXHAUST AND EMISSION CONTROL SYSTEMS Air cleaner / Carburetor operation / Carburetor service / Carburetor adjustments / Throttle cable / Fuel shutoff valve / Fuel tank / Emission control system / Exhaust system / Specifications CHAPTER SEVEN / ELECTRICAL SYSTEM Charging system / Alternator / Rectifier / Voltage regulator / Ignition system / Ignition unit / Ignition coil / Pick-up coil / Spark plugs / Ignition control unit (1982-on XT250) / Lighting system / Switches / Horn / Circuit breaker (XT250) / Fuse (XT125 and XT200) / Specifications CHAPTER EIGHT / FRONT SUSPENSION AND STEERING Front wheel / Front hub / Wheels / Tire changing / Tire repairs / Handlebar / Steering head / Front fork / Specifications CHAPTER NINE / REAR SUSPENSION Rear wheel / Rear hub / Drive sprocket (XT125 and XT200) / Drive sprocket assembly (XT200) / Drive chain / Swing arm / Rear suspension (decarbon monocross system) / Specifications CHAPTER TEN / BRAKES Front and rear brake / Front brake cable / Rear brake pedal assembly / Specifications CHAP...