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Spark plugs

1403 Views 10 Replies 8 Participants Last post by  jpalamar
Ok, so I did a search and it seems most people are running some sort of iridium plug. Question is how often are you replacing them?
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i did my first replacement at 9k on my k7 600. I went with the ngk iridium plugs. It said to do it at 7,500 though in the manual. If your not sure, pull em out and see what they look like, its not hard at all to do.
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