2010 Yamaha Motorsports Grizzly 125 Automatic Owners Manual - Page 75
2010 Yamaha Motorsports Grizzly 125 Automatic Manual
Page 75 highlights
replace it if necessary. 1 Specified spark plug: NGK/CR7HSA To install the spark plug 1. Measure the spark plug gap with a wire thickness gauge and, if necessary, adjust the gap to specification. Spark plug gap: 0.6-0.7 mm (0.024-0.028 in) 1 2 3 4 5 6 7 8 9 10 11 1. Spark plug wrench To check the spark plug 1. Check that the porcelain insulator around the center electrode of the spark plug is a medium-to-light tan (the ideal color when the ATV is ridden normally). TIP 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 ATV. 2. Check the spark plug for electrode erosion and excessive carbon or other deposits, and 8-9 1. Spark plug gap