Factory is 1 inch...
 NGK CR9EK plugs call for 0.7mm gap; I usually go to the tighter side of .7mm.
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"My life stood-a Loaded Gun- / In Corners-till a Day / The Owner passed-identified- / And carried Me away- /. . .Though I than He-may longer live / He longer must-than I- / For I have but the power to kill, / Without-the power to die-" E.Dickinson
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