Question about 2002 Yamaha YZ 426 F

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Spark plug what type of spark plug should i run a YZ426 2002 model at. as i keep burning out plugs

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Run a ngk CR8E-K defiantly its got twin electodes!! 

Posted on May 10, 2009

  • danny
    danny May 10, 2009

    I mean definatly not defiantly

  • danny
    danny May 10, 2009

    electodes?

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  1. Recomended sparkplug (NGK CR8E),medium heatrange plug will operate well in a wide range of engine speeds.
  2. If bike is driven in hot climates,and engine works hard - A spark plug with a colder heat range is recomended.
  3. Bike used in cold climates and engine does not work hard use a spark plug with a higher heat range.

Posted on Jan 22, 2009

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Have a look in the owners manual or i a workshop manual and somewere in there it will tell u the best plugs that should be put in the bike. if it continues in my experiences burnt out plugs means the engine is running to hot which means it is iver fuelling. if this is the case try turning the mixture screw down half a turn

Posted on Jan 01, 2009

  • Joseph S. Nagy Oct 06, 2011

    Just had it delivered from a dealer 165 miles away in Ebensburg, PA. Manual and extra key supposed to be on it's way. It appears the last owner used it heavily as a dirt bike and the dealer did little more than wave a rag over it. I'm not new to tearing down bikes, mostly Triumph and Bultaco back in the 70's. Had no problem figuring out where the filters and all were located, draining oil and removing rusty chain and drive gear and pulling oall the grass and red mud out of the drive . Figured I couldn't necessarily trust what plugs were in it and don't have the in the mail manual yet. I had NGK C6HSA plugs in it.

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