User manual YAMAHA YZ250F-2005

[. . . ] Please take the time to read this manual thoroughly, so as to enjoy all advantages of your YZF-R6. The owner's manual does not only instruct you in how to operate, inspect and maintain your motorcycle, but also in how to safeguard yourself and others from trouble and injury. 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. [. . . ] G Do not rev the engine while shifting down, and avoid high engine speeds with no load on the engine. G Turn the engine off instead of letting it idle for an extended length of time (e. g. , in traffic jams, at traffic lights or at railroad crossings). Engine break-in There is never a more important period in the life of your engine than the period between 0 and 1600 km (1000 mi). Since the engine is brand new, do not put an excessive load on it for the first 1600 km (1000 mi). The various parts in the engine wear and polish themselves to the correct operating clearances. During this period, prolonged full-throttle operation or any condition that might result in engine overheating must be avoided. EAU17091 NOTE: When shifting down two gears at a time, reduce the speed accordingly (e. g. , down to 35 km/h (22 mi/h) when shifting from 5th to 3rd gear). 5 0­1000 km (0­600 mi) Avoid prolonged operation above 7000 r/min. 1000­1600 km (600­1000 mi) Avoid prolonged operation above 9000 r/min. 5-3 OPERATION AND IMPORTANT RIDING POINTS ECA10301 EAU17211 CAUTION: After 1000 km (600 mi) of operation, the engine oil must be changed and the oil filter cartridge or element replaced. 1600 km (1000 mi) and beyond The vehicle can now be operated normally. ECA10310 Parking When parking, stop the engine, and then remove the key from the main switch. EWA10310 WARNING G CAUTION: G 5 G Keep the engine speed out of the tachometer red zone. If any engine trouble should occur during the engine break-in period, immediately have a Yamaha dealer check the vehicle. G Since the engine and exhaust system can become very hot, park in a place where pedestrians or children are not likely to touch them. Do not park on a slope or on soft ground, otherwise the vehicle may overturn. ECA10380 CAUTION: Never park in an area where there are fire hazards such as grass or other flammable materials. 5-4 PERIODIC MAINTENANCE AND MINOR REPAIR EAU17240 EAU17490 EWA10350 Owner's tool kit Safety is an obligation of the owner. Periodic inspection, adjustment and lubrication will keep your vehicle in the safest and most efficient condition possible. The most important points of inspection, adjustment, and lubrication are explained on the following pages. Bolt Cowlings A and B 6 To remove one of the cowlings Remove the bolts, slide the cowling forward (for A) or backward (for B), and then pull it off as shown. 1. Place the cowling in the original position, and then install the bolts. NOTE: Make sure that the tabs at the front of each cowling fit side by side as shown and that all slots and projections fit together. Panels A and B To remove one of the panels Remove the bolts, slide the panel forward, and then take it off. 6 1. Fit the slots and projections at the rear bottom of each cowling together, and then slide the cowling into place. 6-7 1. Bolt PERIODIC MAINTENANCE AND MINOR REPAIR To install the panel 1. Fit the tabs on the panel into the slots and slide it backward. EAU19651 Checking the spark plugs The spark plugs are important engine components, which should be checked periodically, preferably by a Yamaha dealer. Since heat and deposits will cause any spark plug to slowly erode, they should be removed and checked in accordance with the periodic maintenance and lubrication chart. In addition, the condition of the spark plugs can reveal the condition of the engine. The porcelain insulator around the center electrode of each spark plug should be a medium-to-light tan (the ideal color when the vehicle is ridden normally), and all spark plugs installed in the engine should have the same color. If any spark plug shows a distinctly different color, the engine could be defective. If a spark plug shows signs of electrode erosion and excessive carbon or other deposits, it should be replaced. Specified spark plug: NGK/CR9EK, CR10EK 6-8 Before installing a spark plug, the spark plug gap should be measured with a wire thickness gauge and, if necessary, adjusted to specification. 1. [. . . ] Remove the spark plug caps from the spark plugs, and then install the spark plugs and the spark plug caps. EWA10950 7 Long-term Before storing your motorcycle for several months: 1. Follow all the instructions in the "Care" section of this chapter. Fill up the fuel tank and add fuel stabilizer (if available) to prevent the fuel tank from rusting and the fuel from deteriorating. 7-3 WARNING To prevent damage or injury from sparking, make sure to ground the spark plug electrodes while turning the engine over. MOTORCYCLE CARE AND STORAGE 4. Lubricate all control cables and the pivoting points of all levers and pedals as well as of the sidestand/centerstand. [. . . ]