2004 Yamaha Motorsports VMAX Owners Manual - Page 49
2004 Yamaha Motorsports VMAX Manual
Page 49 highlights
PERIODIC MAINTENANCE AND MINOR REPAIR 3. Check each spark plug for electrode erosion and excessive carbon or other deposits, and replace it if necessary. Specified spark plug: NGK/DPR8EA-9 or DENSO/X24EPR-U9 2. Clean the surface of the spark plug gasket and its mating surface, and then wipe off any grime from the spark plug threads. 3. Install the spark plug with the spark plug wrench, and then tighten it to the specified torque. Tightening torque: Spark plug: 18 Nm (1.8 m·kgf, 13 ft·lbf) EAU19871 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. To check the engine oil level 1. Place the vehicle on the centerstand. NOTE: Make sure that the vehicle is positioned straight up when checking the oil level. A slight tilt to the side can result in a false reading. 2. Start the engine, warm it up for several minutes, and then turn it off. 3. 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. To install a spark plug 1. Measure the spark plug gap with a wire thickness gauge and, if necessary, adjust the gap to specification. NOTE: If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4-1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible. 4. Install the spark plug cap. 6 1. Spark plug gap Spark plug gap: 0.8-0.9 mm (0.031-0.035 in) 6-10