{"product_id":"clymer-yam-yz125-250-wr250z-88-93-cm391","title":"CLYMER YAM YZ125-250; WR250Z 88-93 CM391","description":"CLYMER YAM YZ125-250; WR250Z 88-93 CM391 \u003cp\u003eMODELS COVERED:\u003c\/p\u003e\n\n\u003cp\u003eYZ125 (1988-1993)\u003cbr\u003e\nYZ250 (1988-1993)\u003cbr\u003e\nYZ250WR (1989-1990)\u003cbr\u003e\nWR250Z (1991-1993)\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis Yamaha motorcycle manual is 488 pages.\u003cbr\u003e\n\u003cbr\u003e\nQUICK REFERENCE DATA\u003cbr\u003e\n\u003cbr\u003e\nCHAPTER ONE \/ GENERAL INFORMATION\u003c\/strong\u003e\u003cbr\u003e\nManual organization \/ Notes, cautions and warnings \/ Safety first \/ Service hints \/ Washing the bike \/ Torque specifications \/ Fasteners \/ Lubricants \/ RTV gasket sealant \/ Threadlock \/ Parts replacement \/ Optional parts \/ Basic hand tools \/ Precision measuring tools \/ Special tools \/ Fabricating tools \/ Mechanic's tips \/ Ball bearing replacement \/ Oil seals \/ Safety \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER TWO \/ TROUBLESHOOTING\u003c\/strong\u003e\u003cbr\u003e\nOperating requirements\/ Troubleshooting instruments \/ Starting the engine \/ Starting difficulties \/ Engine starting troubles \/ Engine performance \/ Engine \/ Engine noises \/ Two-stroke pressure testing \/ Fuel system \/ Ignition system \/ Clutch \/ Transmission \/ Drive train noise \/ Front suspension and steering \/ Rear suspension \/ Frame noise \/ Brakes \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER THREE \/ LUBRICATION, MAINTENANCE AND TUNE-UP\u003c\/strong\u003e\u003cbr\u003e\nPre-ride checklist \/ Maintenance schedule \/ Tires and wheels \/ Lubricants \/ Cleaning solvent \/ Engine lubrication \/ Periodic lubrication \/ Transmission oil level check and change \/ Front fork oil change and oil level adjustment \/ Drive chain lubrication \/ Swing arm bearing assembly lubrication \/ Relay arm and connecting rod lubrication \/ Kickstarter spline lubrication \/ Front fork dust and oil seal cleaning and lubrication (1989-on) \/ Periodic maintenance \/ Drive chain cleaning and adjustment \/ Clutch adjustment \/ Throttle cable adjustment \/ Air filter service \/ Fuel valve cleaning \/ Sprocket bolt tightness \/ Coolant change \/ Engine tune-up \/ Cylinder head nuts torque \/ Spark plug \/ Ignition timing (CDI) \/ Carburetor idle speed adjustment \/ Idle speed and mixture adjustment \/ Carbon removal \/ Storage \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER FOUR \/ ENGINE TOP END\u003c\/strong\u003e\u003cbr\u003e\nEngine principles \/ Engine lubrication \/ Cleanliness \/ Servicing engine in frame \/ Cylinder head \/ Cylinder and power valve \/ Piston, wrist pin and piston rings \/ Reed valve assembly \/ Engine break-in \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER FIVE \/ ENGINE LOWER END\u003c\/strong\u003e\u003cbr\u003e\nServicing engine in frame \/ Engine \/ Engine sprocket \/ Countershaft oil seal replacement \/ Crankcase and crankshaft \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER SIX \/ CLUTCH \/ KICKSTARTER AND EXTERNAL SHIFT MECHANISM\u003c\/strong\u003e\u003cbr\u003e\nRight-hand crankcase cover \/ Clutch cover \/ Clutch release mechanism \/ Clutch release arm \/ Exhaust governor assembly \/ Clutch \/ Clutch service \/ Clutch inspection \/ Primary drive pinion gear \/ Clutch cable \/ Kickstarter and idler gear \/ External shift mechanism \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER SEVEN \/ TRANSMISSION AND INTERNAL SHIFT MECHANISM\u003c\/strong\u003e\u003cbr\u003e\nTransmission operation \/ Transmission troubleshooting \/ Transmission \/ Transmission overhaul \/ Transmission inspection \/ Internal shift mechanism \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER EIGHT \/ FUEL AND EXHAUST SYSTEMS\u003c\/strong\u003e\u003cbr\u003e\nAir filter \/ Carburetor operation \/ Carburetor service \/ Carburetor cleaning and inspection \/ Carburetor float height adjustment \/ Carburetor rejetting \/ Fuel tank \/ Fuel shutoff valve \/ Exhaust system \/ Exhaust system repair \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER NINE \/ IGNITION SYSTEM\u003c\/strong\u003e\u003cbr\u003e\nComponent testing \/ Capacitor discharge ignition \/ Flywheel rotor \/ CDI unit \/ Ignition coil \/ Spark plug \/ Engine stop switch \/ Wiring diagrams \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER TEN \/ LIQUID COOLING SYSTEM\u003c\/strong\u003e\u003cbr\u003e\nSafety precautions \/ Cooling system inspection \/ Radiator \/ Water pump \/ Hoses \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER ELEVEN \/ FRONT SUSPENSION AND STEERING\u003c\/strong\u003e\u003cbr\u003e\nFront wheel \/ Front hub \/ Rim and spoke service \/ Tire changing \/ Tire repairs \/ Handlebar \/ Steering head \/ Front fork \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER TWELVE \/ REAR SUSPENSION\u003c\/strong\u003e\u003cbr\u003e\nRear wheel \/ Rear hub \/ Driven sprocket \/ Drive chain \/ Tire changing and tire repairs \/ Shock absorber \/ Rear swing arm and linkage \/ Swing arm side clearance \/ Bearing \/ Sub-frame and back stay \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eCHAPTER THIRTEEN \/ BRAKES\u003c\/strong\u003e\u003cbr\u003e\nDisc brake \/ Front brake pad \/ Front caliper \/ Front master cylinder \/ Rear brake pad \/ Rear brake caliper \/ Rear master cylinder \/ Brake hose \/ Brake disc \/ Brake bleeding \/ Specifications\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eINDEX\u003cbr\u003e\n\u003cbr\u003e\nWIRING DIAGRAMS\u003c\/strong\u003e\u003c\/p\u003e","brand":"CLYMER","offers":[{"title":"Default Title","offer_id":48119177052315,"sku":"CLYCM391","price":65.44,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/9742\/0187\/files\/252-M391.jpg?v=1778877761","url":"https:\/\/grmotorcycle.com\/products\/clymer-yam-yz125-250-wr250z-88-93-cm391","provider":"GR Motorcycle","version":"1.0","type":"link"}