2012 Yamaha Motorsports Grizzly 300 Automatic Owners Manual - Page 82
2012 Yamaha Motorsports Grizzly 300 Automatic Manual
Page 82 highlights
4. Remove the spark plug as shown, with the spark plug wrench included in the owner's tool kit. 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 replace it if necessary. Specified spark plug: NGK/CR8E 3. Measure the spark plug gap with a wire thickness gauge and, if necessary, adjust the gap to specification. 1 8 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 8-10 1 1. Spark plug gap Spark plug gap: 0.7 - 0.8mm (0.028 - 0.031 in)
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