According to my ancient media source the answer looks like a yes. It shows p/n 90913-04003 (crankshaft claw) for the period from 09/69 to 07/80. This info was current as of Jan '81. Applicable to F, 2F, FJ4# series and FJ55. It is always possible that p/n has been superceded after Jan '81. Now your bigger challenge is getting your hands on the correct crank.