User manual YAMAHA YZ250F-2007

[. . . ] In addition, the many tips given in this manual will help keep your motorcycle in the best possible condition. If you have any further questions, do not hesitate to contact your Yamaha dealer. So, remember to put safety first! IMPORTANT MANUAL INFORMATION Particularly important information is distinguished in this manual by the following notations: The Safety Alert Symbol means ATTENTION!WARNING Failure to follow WARNING instructions could result in severe injury or death to the motorcycle operator, a bystander, or a person inspecting or repairing the motorcycle. [. . . ] If a spark plug shows signs of electrode erosion and excessive carbon or other deposits, it should be replaced. Spark plug gap Before installing a spark plug, the spark plug gap should be measured with a wire thickness gauge and, if necessary, adjusted to specification. 6 Spark plug gap: 0. 8­0. 9 mm 6-8 PERIODIC MAINTENANCE AND MINOR REPAIR Clean the surface of the spark plug gasket and its mating surface, and then wipe off any grime from the spark plug threads. Tightening torque: Spark plug: 12. 5 Nm (1. 25 m·kgf) NOTE: If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4­1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible. _ _ EAU04913 Engine oil and oil filter cartridge The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter cartridge replaced at the intervals specified in the periodic maintenance and lubrication chart. Place the motorcycle on a level surface and hold it in an upright position. NOTE: Make sure that the motorcycle is positioned straight up when checking the oil level. 4. Engine oil level check window Maximum level mark Minimum level mark Engine oil filler cap 6 2. Start the engine, warm it up for several minutes, and then turn it off. Wait a few minutes until the oil settles, and then check the oil level through the check window located at the bottom-right side of the crankcase. G Make sure that the motorcycle is positioned straight up when checking the coolant level. NOTE: The coolant should be between the minimum and maximum level marks. _ _ 6 3. If the coolant is at or below the minimum level mark, remove panel A (See page 6-7 for panel removal and installation procedures. ), remove the reservoir cap, add coolant to the maximum level mark, and then install the reservoir cap and the panel. Coolant reservoir capacity (up to the maximum level mark): 0. 24 L 6-13 PERIODIC MAINTENANCE AND MINOR REPAIR EC000080 EW000067 EAU04925 _ CAUTION: G If coolant is not available, use distilled water or soft tap water instead. Do not use hard water or salt water since it is harmful to the engine. G If water has been used instead of coolant, replace it with coolant as soon as possible, otherwise the engine may not be sufficiently cooled and the cooling system will not be protected against frost and corrosion. G If water has been added to the coolant, have a Yamaha dealer check the antifreeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced. WARNING Never attempt to remove the radiator cap when the engine is hot. _ _ NOTE: G The radiator fan is automatically switched on or off according to the coolant temperature in the radiator. G If the engine overheats, see page 6-47 for further instructions. _ _ To change the coolant 1. Place the motorcycle on a level surface and let the engine cool if necessary. (See pages 6-5­6-7 for cowling and panel removal and installation procedures. ) 3. Place a container under the engine to collect the used coolant. 6 _ 6-14 PERIODIC MAINTENANCE AND MINOR REPAIR 8. [. . . ] Alternatively, turn the wheels a little every month in order to prevent the tires from becoming degraded in one spot. Cover the muffler outlet with a plastic bag to prevent moisture from entering it. Do not store the battery in an excessively cold or warm place (less than 0 °C or more than 30 °C). For more information on storing the battery, see page 6-35. NOTE: Make any necessary repairs before storing the motorcycle. _ _ 7-5 SPECIFICATIONS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]