Position of eccentric crank?

[FiatFan]

Update: here's part of n e-mail I received from Walthers.

Eccentric cranks #121 ® or #147 (L) are not held in by a nut or screw but press fit their square shanks in to square holes in the drive wheels. (See attached exploded view). The orientation of the crank should appear about 10-deg off alignment to the drivers axis. The “Nut” is a decorative relief on the head of the crankpin.

I pried out the eccentric, rotated it 90 degrees, re-inserted it, and all is right with the world.

Thanks again to all who helped.

Tom