NEW CLYMER MOTORCYCLE SERVICE & REPAIR MANUAL: Yamaha YZ125-250, 1985-1987 and YZ490 1985-1990
BRAND NEW Genuine Clymer publication No.M390 covering Yamaha YZ125-250, 1985 thru 1987 and YZ490 1985 thru 1990 (Softcover, 272 pages).
Models:
1985-1987 YAMAHA YZ125
1985-1987 YAMAHA YZ250
1985-1990 YAMAHA YZ490
Clymer motorcycle repair manuals are written specifically for the do-it-yourselfer. Whether it’s routine maintenance or more extensive repairs involving engine and transmission disassembly, Clymer repair manuals provide all the information you need about your motorcycle. With step-by-step procedures, detailed photography and extensive use of exploded views, each manual is based on the complete disassembly of the machine. Unlike OEM manuals, which are purposely designed for the professional technician with an impressive array of specialized tools, equipment and knowledge, Clymer manuals are designed for the first-time user.
Contents:
CHAPTER ONE / GENERAL INFORMATION
CHAPTER TWO / TROUBLESHOOTING
CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Routine checks / Pre-checks / Tires and wheels / Lubricants / Periodic lubrication / Periodic maintenance / Tune-up / Storage / Specifications
CHAPTER FOUR / ENGINE
Engine principles / Servicing engine in frame / Engine removal installation / Cylinder head / Cylinder / Piston, wrist pin and piston rings / Break-in procedure / Magneto / Reed valve assembly / Crankcase and crankshaft / Kickstarter / Service and adjustment / Specifications
CHAPTER FIVE / CLUTCH AND TRANSMISSION
Clutch / Clutch cable / External shift mechanism / Primary drive gear / Drive sprocket / Transmission / Specifications
CHAPTER SIX / FUEL, POWER VALVE AND EXHAUST SYSTEMS
Air cleaner / Carburetor operation / Carburetor service / Carburetor adjustments / Fuel shutoff valve / Fuel tank / Energy induction system (YZ490) / Power valve induction system / Exhaust system / Exhaust system decarbonizing / Exhaust system repair / Specifications
CHAPTER SEVEN / IGNITION SYSTEM
Capacitor discharge ignition / Magneto (outer rotor) / Magneto (inner rotor) / Magneto coil testing (all models) / Capacitor discharge ignition unit / Ignition coil / Spark plug / Engine kill switch / Wiring diagrams / Specifications
CHAPTER EIGHT / COOLING SYTEM
Cooling system inspection / Radiator / Water pump / Specifications
CHAPTER NINE / FRONT SUSPENSION AND STEERING
Front wheel / Front hub / Wheels / Tire changing / Tire repairs / Handlebar / Steering head / Front fork / Specifications
CHAPTER TEN / REAR SUSPENSION
Rear wheel / Rear hub / Driven sprocket / Drive chain / Tire changing and tire repairs / Spoke and rim replacement / Rear swing arm / Rear suspension (Decarbon Monocross System) / Specifications
CHAPTER ELEVEN / BRAKES
Front disc brake / Front brake pad / Front caliper / Front master cylinder / Front brake hose / Front brake disc / Bleeding the system / Rear brake / Rear brake pedal assembly / Specifications
CHAPTER TWELVE / SUSPENSION ADJUSTMENT
Yamaha factory accessories / Front fork / Rear shock absorber / Specifications
INDEX
WIRING DIAGRAMS
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