Changing the Spark Plug - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
 
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post #1 of 7 (permalink) Old 09-21-2010, 04:51 PM Thread Starter
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Changing the Spark Plug

I know this is a stupid question but can anyone tell me where the spark plug is located on the YFZ 450 and the easiest way to change it.? I need to change it and I cant locate it without taking apart the atv.
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post #2 of 7 (permalink) Old 09-21-2010, 05:35 PM
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Its under the gas tank. Just take off the plastic that goes around the tank remove the tank and the plug will be right under the tank.
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post #3 of 7 (permalink) Old 09-21-2010, 05:44 PM Thread Starter
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Thanks. Do you know the number of the spark plug so I can pick one up before I start to work on it?
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post #4 of 7 (permalink) Old 09-21-2010, 05:57 PM
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cr8e or cr8eix for the iridium get the iridium lasts alot longer

2006 yfz 450
35 leak, 165 main, 45 pilot12.5:1 piston
trinity exhaust with shorty,hot rods crank(i believe),ported head,oversized valves,cams,vortex ignition,K&N filter,zip tie carb mod....throttle spring mod,works triple rate front shocks
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post #5 of 7 (permalink) Old 09-21-2010, 06:49 PM
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Get the iridium plug (cr8eix)

  • 08' yfz450 (blue)
  • 04' ford svt lightning (blue)
  • 09' ford focus (gold)
  • 95' GMC suburban (green)
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post #6 of 7 (permalink) Old 09-21-2010, 08:58 PM
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Make sure you take an air blower and blow out the dirt in the hole before you take out the plug. There is a small hole on the side of your head to do this
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post #7 of 7 (permalink) Old 09-23-2010, 06:07 PM
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Is this the same as the yfz 450r? If so that seems like a big pain just to check your plug.

Tony
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