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Old 01-28-2010, 01:30 PM   #5
1999flhrci
Not Yet Wild
Yamaha
 
Join Date: Jan 2010
Location: Warner Robins, Ga. Macon area
Posts: 45
Default Re: Tune Up Kits G22?

It actually depends on the engine setup. On other engines I've worked with I will use a hotter plug for a rich condition and a colder plug for a lean condition. It seems to make the plugs last longer. A lean carb will run hotter than a rich one therefore you don't need a hot plug.
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