ProGear 300LS Owner's Manual page 15

Hardware
(21) Right Crank Bolt
1PC
(25) Nylon Nut 2PCS
ASSEMBLY
Figure F.
Note: Figure F shows the correct installation of the Right Crank Bolt
(21). Keep the bolt perfectly straight when the bolt goes through the
Right Foot Bar (17), and is being screwed into the Right Crank (26). If
the bolt is screwed into the crank at an angle, this may damage the
equipment.
Please make sure the right bolt is for the right crank only and the
left bolt is for the left crank only. If done incorrectly, the bolts
and/or cranks may be damaged or stripped.
(22) Wave Washer
1PC
(27) Spring Washer
1PC
(23) Bolt
2PCS
(28) Right Nylon Nut
1PC
13
(24) Washer
2PCS
(97) Nut Cap
1PC