Need help identifying ignition module

Looks like your date code is 00 so 691450 is correct, but before changing the crank, I would make sure the blade isn't bent and that it is balanced.
 
Check for balance too. If one side of the blade has more metal than the other it can cause significant vibration.
 
I took the mower to a Snapper Dealer, the Crankshaft is not bent and the blade was sharp & Balanced. He installed the blade with a impact driver.
Vibrations gone. suggested I may not have had the blade tight enough.
 
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