Softcover - 522 pages - Yamaha Timberwolf YFM250, YFB250, YFB250FW 1989 - 2000 Clymer Owners Service & Repair Manual Covers the following Models: * Yamaha Timberwolf YFM250, 1989-1991 * Yamaha Timberwolf YFB250, 1992-1998 * Yamaha Timberwolf YFB250FW, 1994-2000 Contents: * QUICK REFERENCE DATA * GENERAL INFORMATION Manual organization / Notes, warnings and cautions / Safety first / Service hints / Washing the vehicle / Torque specifications / Lubricants / Sealant, cements and cleaners / Threadlocking compound / Expendable supplies / Serial numbers / Warning labels / Basic hand tools / Precision measuring tools / Special tools / Fabricating tools / Mechanic's tips / Ball bearing replacement / Seals / Riding safely / Storage / Specifications * TROUBLESHOOTING Operating requirements / Troubleshooting instruments / Starting the engine / Starting difficulties / Poor idle speed / Poor medium and high speed performance / Starting system / Charging system / Ignition system / Lighting system / Cooling system testing / Fuel system / Engine overheating / Engine / Engine overheating / Engine noises / Engine leak down test / Clutch / Transmission / Drive train Noise / Handling / Frame noise / Brakes * LUBRICATION, MAINTENANCE AND TUNE-UP Pre-ride check list / Maintenance service schedule intervals / Periodic lubrication / Engine oil and filter change / Oil flow inspection / Front differential gearcase oil change / Rear differential drive gearcase oil change / Control cable lubrication / Unscheduled lubrication / Periodic maintenance / Unscheduled maintenance / Tune-up / Valve clearance / Cylinder compression / Spark plug / Air filter / Ignition timing / Pilot air screw adjustment / Idle speed adjustment / Specifications * ENGINE TOP END Engine principles / Cylinder head / Camshaft and rocker arms / Camshaft chain / Chain guides / Valves and valve components / Cylinder block / Piston and piston rings / Specifications * ENGINE LOWER END Servicing engine in frame / Subtransmission and reverse gear assembly / Middle driven and reverse gear assembly / Transfer gear assembly / Middle drive gear / Transmission drive select lever / Oil pump / Balancer driven gear / Magneto stator and stator housing / Magneto rotor and starter clutch / Right-hand crankcase spacer / Crankcase and crankshaft / Recoil starter / Break-in procedure / Specifications * CLUTCH AND EXTERNAL SHIFT MECHANISM Clutch cover / Clutch release lever mechanism / Clutch assemblies / One-way clutch inspection / External shift mechanism / Specifications * TRANSMISSION AND INTERNAL SHIFT MECHANISM Transmission troubleshooting / Transmission overhaul / Internal shift mechanism / Specifications * FUEL AND EXHAUST SYSTEMS Carburetor adjustments / Throttle cable replacement / Choke cable replacement / Throttle lever housing / Fuel tank / Fuel shutoff valve / Air filter air box / Exhaust system / Specifications * ELECTRICAL SYSTEM Basic information / Charging system / Voltage regulator/rectifier / Capacitor discharge ignition / Ignition coil / CDI magneto (stator source and pickup coils) / Starting system / Starter relay / Lighting system / Indicator light system / Instrument panel / Handlebar cover and indicator lights / Switch / Relays / Fuses / Specifications * FRONT SUSPENSION AND STEERING Front wheel / Front hub brake drum / Front suspension / Shock absorber / Steering knuckle / Control arm / Control arm bushing / Ball joint / Handlebar / Tie rods / Steering shaft / Tyres and wheels / Specifications * FRONT DRIVE MECHANISM FOUR-WHEEL DRIVE Front drive axle / Front differential gearcase / Front drive shaft / Specifications * REAR SUSPENSION AND FINAL DRIVE Rear wheels / Rear hub / Rear hub brake drum / Rear axle / Final drive unit and short drive shaft / Tyre changing and tyre repairs / Shock absorber / Swing arm / Specifications * BRAKES Front brake drum / Rear brake disc / Rear drum brake hub / Rear brake pedal / Specifications * BODY Seat / Front guard / Front bumper / Front carrier/rack / Rear carrier/rack / Rear bumper / Rear handle / Fuel tank cover assembly / Front fender / Front fender / Rear fender / Footrests / Specifications * WIRING DIAGRAMS Clymer motorcycle & ATV repair manuals can save you money on maintenance and repair bills. Step-by-step procedures and detailed illustrations guide you through every job, from maintenance and troubleshooting, all the way to complete teardown and rebuild. |