10-24-2016, 08:34 AM
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#11 |
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Join Date: Jun 2011
Posts: 1,335
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What you have there is a new cooler running spark plug.The firing tip doesn't project out as far as the old hot plug.It should work better for your aircooled Hawk.Here's some info that may help.
https://www.ngksparkplugs.com/about-...rk-plug-basics 
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