How do you change the spark plug on the 2003 yamaha 450
Remove seat - Remove Tank - Remove spark plug coil (just pulls off) Then with correct spark plug wrench you can undo the spark plug and replace with new one( dont feel the need to over tighten the new plug just tight is fine!) Then push coil all the way back on - install the tank and then install the seat - Ready to go!
good luck regards Jamie
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