Related Manuals for Yamaha YZ250FB 2012
Summary of Contents for Yamaha YZ250FB 2012
- Page 1 2012 Read this manual carefully before operating this vehicle. OWNER’S SERVICE MANUAL LIT-11626-25-10 17D-28199-12...
-
Page 2: Table Of Contents
TABLE OF CONTENTS GENERAL INFORMATION SPECIFICATIONS REGULAR INSPECTION AND ADJUSTMENTS ENGINE CHASSIS ELECTRICAL TUNING... -
Page 3: General Information
CONTENTS CHAPTER 1 GENERAL INFORMATION LOCATION OF IMPORTANT LABELS ..1-1 DESCRIPTION ........... 1-2 CONSUMER INFORMATION ....1-3 INCLUDED PARTS ........1-4 IMPORTANT INFORMATION ....1-5 CHECKING OF CONNECTION ....1-7 SPECIAL TOOLS........1-8 CONTROL FUNCTIONS ......1-12 STARTING AND BREAK-IN ....1-14 TORQUE-CHECK POINTS ...... -
Page 4: Engine
CHAPTER 4 ENGINE SEAT, FUEL TANK AND SIDE COVERS . 4-2 EXHAUST PIPE AND SILENCER ..... 4-4 RADIATOR..........4-9 CARBURETOR ........4-13 CAMSHAFTS ........... 4-24 CYLINDER HEAD ........4-32 VALVES AND VALVE SPRINGS .... 4-35 CYLINDER AND PISTON ......4-42 CLUTCH ........... -
Page 5: Electrical
CHAPTER 6 ELECTRICAL ELECTRICAL COMPONENTS AND WIRING DIAGRAM ........6-2 IGNITION SYSTEM ........6-4 THROTTLE POSITION SENSOR SYSTEM ............. 6-8 CHAPTER 7 TUNING ENGINE ............7-1 CHASSIS............ 7-8... -
Page 6: Location Of Important Labels
LOCATION OF IMPORTANT LABELS GENERAL INFORMATION LOCATION OF IMPORTANT LABELS Please read the following important labels carefully before operating this vehicle. For use only on a closed course Premium unleaded in sanctioned competition. gasoline only. This motorcycle does not meet 3FB-2415E-02 EPA noise and emissions standards and is not for general... - Page 7 DESCRIPTION DESCRIPTION 1. Clutch lever 11. Coolant drain bolt 2. Hot starter lever 12. Rear brake pedal 3. Front brake lever 13. Valve joint 4. Throttle grip 14. Fuel cock 5. Radiator cap 15. Cold starter knob 6. Fuel tank cap 16.
-
Page 8: Consumer Information
There are two significant reasons for knowing the serial number of your machine: 1. When ordering parts, you can give the num- ber to your Yamaha dealer for positive iden- tification of the model you own. 2. If your machine is stolen, the authorities will need the number to search for and identify your machine. -
Page 9: Included Parts
INCLUDED PARTS INCLUDED PARTS NIPPLE WRENCH This nipple wrench "1" is used to tighten the DETACHABLE SIDESTAND spoke. This sidestand "1" is used to support only the machine when standing or transporting it. • Never apply additional force to the side- stand. -
Page 10: Preparation For Removal And Disassembly
5. Keep away from fire. 2. Use proper tools and cleaning equipment. ALL REPLACEMENT PARTS Refer to "SPECIAL TOOLS" section. 1. We recommend to use Yamaha genuine parts for all replacements. Use oil and/or grease recommended by Yamaha for as- sembly and adjustment. -
Page 11: Lock Washers/Plates And Cotter Pins
IMPORTANT INFORMATION LOCK WASHERS/PLATES AND COTTER CIRCLIPS PINS 1. All circlips should be inspected carefully be- 1. All lock washers/plates "1" and cotter pins fore reassembly. Always replace piston pin must be replaced when they are removed. clips after one use. Replace distorted cir- Lock tab(s) should be bent along the bolt or clips. -
Page 12: Checking Of Connection
CHECKING OF CONNECTION CHECKING OF CONNECTION Dealing with stains, rust, moisture, etc. on the connector. 1. Disconnect: • Connector 2. Dry each terminal with an air blower. 3. Connect and disconnect the connector two or three times. 4. Pull the lead to check that it will not come off. 5. -
Page 13: Special Tools
SPECIAL TOOLS SPECIAL TOOLS The proper special tools are necessary for complete and accurate tune-up and assembly. Using the correct special tool will help prevent damage caused by the use of improper tools or improvised tech- niques. The shape and part number used for the special tool differ by country, so two types are pro- vided. - Page 14 SPECIAL TOOLS Tool name/Part number How to use Illustration Piston pin puller set This tool is used to remove YU-1304, 90890-01304 the piston pin. Radiator cap tester These tools are used for YU-24460-01, 90890-01325 checking the cooling system. Radiator cap tester adapter YU-33984, 90890-01352 Steering nut wrench This tool is used when tighten...
- Page 15 SPECIAL TOOLS Tool name/Part number How to use Illustration Pocket tester Use this tool to inspect the YU-3112-C, 90890-03112 coil resistance, output voltage and amperage. Timing light This tool is necessary for YM-33277-A, 90890-03141 checking ignition timing. Valve spring compressor This tool is needed to remove YM-4019, 90890-04019 and install the valve assem-...
- Page 16 Ignition checker tem components. 90890-06754 Digital tachometer This tool is needed for ob- YU-39951-B, 90890-06760 serving engine rpm. YAMAHA Bond No. 1215 This sealant (Bond) is used ® (ThreeBond No. 1215) for crankcase mating surface, 90890-85505 etc.
-
Page 17: Control Functions
CONTROL FUNCTIONS CONTROL FUNCTIONS KICKSTARTER CRANK Rotate the kickstarter crank "1" away from the ENGINE STOP SWITCH engine. Push the starter down lightly with your The engine stop switch "1" is located on the left foot until the gears engage, then kick smoothly handlebar. -
Page 18: Rear Brake Pedal
CONTROL FUNCTIONS REAR BRAKE PEDAL COLD STARTER KNOB The rear brake pedal "1" is located on the right When cold, the engine requires a richer air-fuel side of the machine. Press down on the brake mixture for starting. A separate starter circuit, pedal to activate the rear brake. -
Page 19: Starting And Break-In
STARTING AND BREAK-IN STARTING AND BREAK-IN AIR FILTER MAINTENANCE According to "CLEANING THE AIR FILTER FUEL ELEMENT" section in the CHAPTER 3, apply Always use the recommended fuel as stated the foam-air-filter oil or its equivalent to the ele- below. Also, be sure to use new gasoline the ment. -
Page 20: Starting A Warm Engine
STARTING AND BREAK-IN STARTING A WARM ENGINE Do not operate the cold starter knob and throt- Observe the following break-in procedures tle. Pull the hot starter lever "1" and start the during initial operation to ensure optimum engine by kicking the kickstarter crank forceful- performance and avoid engine damage. - Page 21 Thank you so much for reading. Please click the “Buy Now!” button below to download the complete manual. After you pay. You can download the most perfect and complete manual in the world immediately. Our support email: ebooklibonline@outlook.com...
Need help?
Do you have a question about the YZ250FB 2012 and is the answer not in the manual?
Questions and answers