[Early_S_Man]

John,

The 33-to-120 Ohm changeover occured around the time of the '72/'73 model changeover. My CDI is an early '73 model, date-coded '227' and the 120 Ohm resistor is original. The date code is stamped on the same side as the 'Vorsicht!' sticker near the lower edge ... with very tiny 2 - 3 mm high numerals.

You can easily tell which pullup resistor you have by measuring from terminal 'B' to terminal 'C' with a multimeter set to measure low Ohms [200 Ohm scale] ...

If anyone has the CDI unit off to clean the Faston connectors [a good annual procedure to put on your preventive maintenance list] ... you can check the date code, measure the pullup resistor, and take a closeup pic of the circuit board after removing the back cover.

It would be very useful to me and others if CDI postings were in the format:

Part number, Date Code, Pullup resistor value ... followed by a good closeup pic taken outdoors without flash ... 800 pixels wide.