Office Star Products OSP Designs COSMO CSM2530-ES Assembly Instructions Manual page 5

STEP 3
Secure Swivel (7) to Seat Frame (2) using four Flat Washers (C), four Spring Washers (D) and four Bolts (A). FULLY TIGHTEN ALL BOLTS (A)
USING WRENCH (E).
STEP 4
Secure Swivel (7) to assembly using four Flat Washers (C), four Spring Washers (D) and four Bolts (A). FULLY TIGHTEN ALL BOLTS (A)
USING WRENCH (E).