BH Place the seat (B) upside down smooth carpet surface. Tighten the Left Front Leg (C) and Right Front Leg(D) on the corner blocks by bolts(F), lock washers(H) and flat washers(l) with Allen wrench(J). Take the Allen Wrench, and turn the bolts until the legs are secure. DO NOT TIGHTEN COMPLETELY. Stop when feel you are adding force fo tighten the bolt. Tighten the seat(B) on the hatchback) by lock washers(J) and fiat washers(K) with Allen wrench(L).