December 13, 201312 yr I had a friend with a gasgas 200 pro. the bike wouldn't go above 1/3 throttle. I cleaned the carb 10 times, thinking it was plugged jet or something. then for no reason, tried another plug, bike ran great... half the day was wasted cleaning the carb over and over. the plug was a "looked new" and probably was, iridium? NGK. I think that is why I changed it, me and NGK just never get along... lol.
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