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DantheEXman
09-20-2002, 04:20 PM
What is the correct spark plug gap for the 400ex? Do the NGK plugs for the 400ex come pre-gapped?? Thanks
BornOnFire
09-20-2002, 04:44 PM
Spark Plug Gap

0.6-0.7 mm (0.024-0.028 in.)

I would verify the gap of any spark plug before I put it in my engine!
09-21-2002, 06:07 AM
they dont come pregapped but the ones i got came at like .024. Double check anyway.