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Old December 7th, 2010, 06:59 AM   #1
cbowman78
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What spark plugs...

is everyone using on their bikes? I figured I would change mine to a fresh set before I start to tune it after all its changes.
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Old December 7th, 2010, 11:24 AM   #2
UltrA_09
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The spark plugs that can be used on the 250 is either the NGK CR8E or the Nippon Denso U24ESR-N

Do not purchase the NGK #CR8HSA or Nippon Denso #U24FSR-U as listed on the wiki as that is reffering to the pre-2008 models.

You can use a 16mm plug wrench, or the wrench included in the tool kit; torque specs of 115 lb.

Here's a helpful video of how it's done:
http://www.youtube.com/watch?v=3POFTC_i_N4
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Old December 7th, 2010, 11:37 AM   #3
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Quote:
Originally Posted by UltrA_09 View Post

You can use a 16mm plug wrench, or the wrench included in the tool kit; torque specs of 115 lb.

Here's a helpful video of how it's done:
http://www.youtube.com/watch?v=3POFTC_i_N4
that should be inch/pounds.
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Old December 7th, 2010, 12:50 PM   #4
Alex
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Unless you want your spark plug ***really*** tight.

(safety tip: don't do this. )
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Old December 8th, 2010, 12:04 AM   #5
GiGs
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You can also use the Iridium version of the NGK plug (NGK CR8EIX)...IX = iridium.

I am currently using them in my bike....iridium plugs last longer but that's about the only difference.

Also heard of people using NGK CR7E plugs, difference is heat range - with NGK the higher the number the colder the plug. If I remeber correctly people using those plugs were using them in winter etc....

If you don't have a torque wrench, tight as you can with your hand then 1/4 of a turn with the ratchet.
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Old December 8th, 2010, 06:36 AM   #6
HKr1
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CR8EK is a nice plug choice too... double ground electrodes
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