View Full Version : spark plug gap on a 400ex
what should the gap be for a 2001 400ex?
thanks!
0.6 mm-0.7 mm
0.024-0.028 in.
ok thanks!
i dropped it the other day and wasnt sure which side it was on, i checked it and it was at .2 and the one i got outt the bike said .3 so i set it at .025
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