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Old 06-16-2009, 12:11 PM   #1 (permalink)
Third gear and cruising
 
RED-M's Avatar
 
Join Date: May 2008
Bike: 2005 RED M-50
Location: Central New York
Posts: 508
Default Help please {loose spark plug}

Ok guys , i'm posting this question for a friend of mine who has a 91 kat 1100, for some reason he has a spark plug that keeps working itself loose and actually found it popped out and laying on top of motor a few times. It runs horrible when that happens! But seriously, we've tightened it down fairly well but it keeps working loose...what gives?