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Old 10-03-2016, 08:38 AM   #3
cruisinthe34
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Join Date: Sep 2015
Location: Charleston, WV
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Re: First motor start, terrible knocking

Total shot in the dark, but you might check as a last resort that the fly wheel is tight. I built a flathead once and the bolts on the flywheel were just a little too long and bottomed out. Could be the flywheel needs tightening.
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