Softcover – 350 pages – Yamaha YZ50 YZ60 YZ80 Monoshock 1978 – 1990 Clymer Owners Service Repair Manual Covers the following Models: Yamaha YZ50 1980 Yamaha YZ60 1981-1982 Yamaha YZ80 1978-1990Contents: QUICK REFERENCE DATA GENERAL INFORMATION TROUBLESHOOTINGTwo-stroke pressure testing LUBRICATION MAINTENANCE AND TUNE-UPPre-checks / Tyres and wheels / Lubricants / Cleaning solvent / Engine lubrication / Periodic lubrication / Periodic maintenance / Engine tune-up / Storage ENGINE TOP ENDEngine principles / Engine lubrication / Engine cooling / Cleanliness / Servicing engine in frame / Cylinder head / Cylinder / Piston wrist pin and piston rings / Break-in procedure / Reed valve assembly ENGINE LOWER ENDServicing engine in frame / Engine removal installation / Crankcase and crankshaft CLUTCH EXTERNAL SHIFT MECHANISM AND KICKSTARTERClutch cover / Clutch / Primary drive pinion gear / Clutch cable / Clutch release mechanism / External shift mechanism / Kickstarter (1978-1980) / Kickstarter (1981-on) TRANSMISSION AND INTERNAL SHIFT MECHANISMTransmission operation / Transmission overhaul (5-speed) / Transmission overhaul (1979-1980 6-speed) / Transmission overhaul (1981-on 6-speed) / Internal shift mechanism (1978-1980) / Internal shift mechanism (1981-on) FUEL AND EXHAUST SYSTEMSCarburetor operation / Carburetor service (1978-1982) / Carburetor adjustments / Fuel shutoff valve / Fuel tank / Fuel filter / Yamaha energy induction system (YEIS) / Exhaust system / Exhaust system repair IGNITION SYSTEMContact breaker point ignition (YZ50) / Capacitor discharge ignition / Magneto (outer rotor type) / Magneto (inner rotor type) / Stator coil testing (all models) / Capacitor discharge ignition unit / Ignition coil / Spark plug / Engine kill switch LIQUID COOLING SYSTEMCooling system inspection / Radiator / Water pump FRONT SUSPENSION AND STEERINGFront wheel / Front hub / Wheels / Tyre changing / Tyre repairs / Handlebar / Steering head and stem (1978-1981 and 1983) / Steering head and stem (1982 YZ80) / Steering head and stem (1984-on) / Front fork (YZ50 YZ60 and 1978-1982 YZ80) / Front fork (1983-on) REAR SUSPENSIONRear wheel / Rear hub / Driven sprocket / Drive chain / Rear suspension (deCarbon monoshock system) / Swing arm (1978-1982) / Swing arm and relay arm (1983-on) / Rear suspension bushing and bearing replacement (all models) BRAKESDrum brakes / Front brake ca click to go
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