NAMCO Prop cycle Operator's Manual page 27

4) Remove the four Pozi head screws (M5x12) and remove the wheel cover.
5) Remove the hexagonal flange nuts (3/8") on both sides and the four eye
bolts which retain the flywheel shaft to the frame assembly.
6) Move the flywheel forward to release the tension on the drive belt, and
slip the drive belt off the pedal pulley.
Page 27