User manual YAMAHA WR250R

[. . . ] Read this manual carefully before operating this vehicle. OWNER'S MANUAL WR250R 32D-28199-E2 EAU46090 Q Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold. INTRODUCTION EAU10102 Welcome to the Yamaha world of motorcycling!As the owner of the WR250R, you are benefiting from Yamaha's vast experience and newest technology regarding the design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability. Please take the time to read this manual thoroughly, so as to enjoy all advantages of your WR250R. [. . . ] Lift the bottom of the panel slightly, and then slide the panel forward. 2. Install the seat. 6-8 PERIODIC MAINTENANCE AND ADJUSTMENT EAU19622 Checking the spark plug 1 2 3 Panel D 4 5 6 7 8 9 To remove the panel 1. Remove the bolt and washer, and then remove the panel as shown. 1. Panel D 3 2 1 To install the panel 1. Place the panel in the original position, and then install the washer and bolt. The spark plug is an important engine component, which should be checked periodically, preferably by a Yamaha dealer. Since heat and deposits will cause any spark plug to slowly erode, it should be removed and checked in accordance with the periodic maintenance and lubrication chart. In addition, the condition of the spark plug can reveal the condition of the engine. The porcelain insulator around the center electrode of the spark plug should be a medium-to-light tan (the ideal color when the vehicle is ridden normally). If the spark plug shows a distinctly different color, the engine could be operating improperly. Do not attempt to diagnose such problems yourself. Instead, have a Yamaha dealer check the vehicle. If the spark plug shows signs of electrode erosion and excessive carbon or other deposits, it should be replaced. Specified spark plug: NGK/CR9EK 2. Install the seat. 6-9 Before installing a spark plug, the spark PERIODIC MAINTENANCE AND ADJUSTMENT plug gap should be measured with a wire thickness gauge and, if necessary, adjusted to specification. 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. EAU45141 Engine oil and oil filter element The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter element replaced at the intervals specified in the periodic maintenance and lubrication chart. Place the vehicle on a level surface and hold it in an upright position. A slight tilt to the side can result in a false reading. 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. TIP The engine oil should be between the minimum and maximum level marks. 1 1 2 3 4 5 6 7 8 9 1. Spark plug gap Spark plug gap: 0. 6­0. 7 mm (0. 024­0. 028 in) 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: 13 Nm (1. 3 m·kgf, 9. 4 ft·lbf) TIP If a torque wrench is not available when installing a spark plug, a good estimate 6-10 PERIODIC MAINTENANCE AND ADJUSTMENT 1 1 2 3 4 5 6 7 8 9 To change the engine oil (with or without oil filter element replacement) 1. [. . . ] 6-35 T Tail/brake light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34 Throttle cable free play, checking . . . . . . . . . . . 6-18 Throttle grip and cable, checking and lubricating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27 Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]