You receive the front fork assembly like this.

Click the diagram to enlarge

Fork Assembly 2

Fork Assembly 3

Rear Tire is Pre-Assembled.

1 ea. of Adjusting Nut

1 ea. of Washer

1 ea. of Retaining Flange

1 ea. of Washer

1 ea. of Seat

2 ea. of Bearings

1 ea. of Top Nut

1 set of handle bar

Fork Assembly

  Position the fork in an upright position with the threaded tube facing up.  The trike has been shipped partially assembled and the retaining flange (thin galvanized sleeve with flared end facing down), large washer, and racer seat (beveled ring that bearing contacts) should be in place in the order listed. 

 Remove any other bearings or nuts off the fork tube.  Place one of the bearings on the racer seat making sure that the ball bearings are facing UP.  Now lift the head tube of the frame over the fork tube and lower onto fork. 

  Place the second bearing into the racer cup, this time making sure that the bearings are facing DOWN.  Screw the adjusting nut onto the fork tube with the flat side facing UP.  Tighten this nut firmly until there is no side to play when firmly shaking the fork (be careful not to over tighten which causes steering to be stiff).  Place medium washer onto fork tube and tighten top nut well.

  Insert handle bar assembly into frame (fork tube) by loosening the long bolt (located in the stem) a little making sure that the wedge nut stays on.  Position the handle bar and tighten the head of the long bolt until assembly does not move.