2010 Yamaha Motorsports TMAX Owners Manual - Page 55
2010 Yamaha Motorsports TMAX Manual
Page 55 highlights
PERIODIC MAINTENANCE AND ADJUSTMENT EAU19642 1 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 operating improperly. Do not attempt to diagnose such problems yourself. Instead, have a Yamaha dealer check the vehicle. If a spark plug shows signs of electrode erosion and excessive carbon or other deposits, it should be replaced. Specified spark plug: NGK/CR7E 7-10 2 2 3 4 5 6 7 8 9 1 1. Screw 2. Panel D 1. Screw To install the panel 1. Place the panel in the original position, and then install the screws. 2. Install panel C. Panel E To remove the panel Remove the screws, and then pull the panel outward. To install the panel Place the panel in the original position, and then install the screws.