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  1. Yamaha Raptor 660R 2003 Running Very Badly

    Yamaha YFM660R Raptor (2001-2005)
    Hey Guys, raptor 660r, running bad, backfiring, not idling What's up? I'm having a bit of a problem here with my 03 Raptor 660R. Firstly it had a lot of issues startin, so i dug up the internet and found that the sparkplug "sensor" had some rust. I've cleared it out and it simply fixed the...
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