Yamaha Raptor 350 & Warrior Forum

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  1. R

    Yamaha terrapro yfp350 spark plug issues

    Hi I have bought a Yamaha Terrapro YFP350 with spark plug issues. It seams to kill the spark plug if i don't disconnect the coil lead. The problem is when its lift connected it won't start. when i check for spark it does something very unusual and confusing, when I earth the spark plug...