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Choppers
09-04-2006, 05:13 PM
What should the spark plug gap be set at?

Stock 2005 400ex
GPracer2500
09-04-2006, 07:43 PM
0.6mm - 0.7mm (0.024" - 0.028")

They're suppose to come pre-gapped but it's a good idea to check them anyway.