What year was this motor made in? Mercury –KIEKHAEFER – 100 HP – Thunderbolt Ignition – 31933 2-A-9?

Question

What year was this motor made in? Mercury –KIEKHAEFER – 100 HP – Thunderbolt Ignition – 31933 2-A-9?

Answer 1

According to the chart in the attached link 100hp motors were made from 1966 to 1974.  Your motor is in that range.  To determine the exact year, get the serial number and look it up in this chart.

http://www.marineengine.com/mfr/mercury_...

Answer 2

http://northamerica.mercurymarine.com/ab...

Answer 3

Need more info.  What color is the motor?  What is the serial #. ( can be found on transom bracket or serial disc on engine block).  That no. is a part no.  best guess  1965-1969