Sparkplug removal?

6 replies to this topic
  • WR450F_Sweden

Posted January 26, 2004 - 06:58 AM


I'm new to this forum and a new wr450f owner from Sweden.

Maybe someone here have a good answer to this question.
I have tried to remove the sparkplug on my wr450f - 2003.
After stripping it of the side covers, saddle and tank I was finally able to reach the ignition coil/sparkplug cap.
I disconnected the wires and tried to lift it up only to find that it wont clear the frame. Am I supposed to remove the whole engine just to check the condition of the sparkplug? Or is it some step that I have missed?
When I read the service manual it doesn't say anything about sparkplug removal procedure which indicates that it must be easy. I also searched this forum for clues but none were to be found.

  • msgbean

Posted January 26, 2004 - 07:47 AM


It is tight but just bend it to the side and it will come out.

  • WR450F_Sweden

Posted January 26, 2004 - 08:13 AM


Thanks, it's always easier when someone tells you how it is supposed to be done. I was afraid to break something by using to much force. Now I know that it was the force that was missing.

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  • geo199

Posted January 26, 2004 - 08:25 AM


use a bigger hammer man

  • KentuckyWR

Posted January 26, 2004 - 09:12 AM


I had exactly the same problem the first time.
I didn't want to break the cap/coil assembly and didn't want to apply too much pressure.
I've got an old spark plug wire off my truck and I use that to reach down in there and pull the damn plug outta that black hole!!!

  • toyota_mdt_tech

Posted January 26, 2004 - 10:20 AM


Also, there is a small water drain hole on the RH side of the head, before you pop out that plug, give a shot of compressed air (if its available) to blow out any dirt in the plug well and to clear the drain if its clogged too. My WR came with a special spark plug socket just for plug removal. As for the wire, it took a little massaging it sideways, it came right out.

  • WR450F_RDR

Posted January 26, 2004 - 07:03 PM


let the force be with you. :)


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