1. Insert washer shaped retainer into retainer installation tool with the finished side facing up. Attention: the tabs on the self locking washer must be turned towards the interior of the tool.
2. Place one end of the trailer axle into retainer installation toll and pound the axle into tool (and retainer) until fully seated.
3. Insert white bushing inside of each trailer wheel as shown.
4. Install the following components onto the axle:
5. Washer
6. Wheel (hubcap facing down)
7. Second wheel (hubcap facing up)
8. Washer

Attention: Check to make sure that the wheels have been inserted correctly on the axle. The hubcaps must be facing away from the toy.

5. Place retainer into installation tool, place tool onto upper end of axle and pound until seated. Remove tool.
6. Place wheel and axle assembly onto trailer chassis with washers outside of posts and press down until axle is firmly seated into chassis.
7. Insert red pin into trailer chassis tongue.
8. Remove the 5 protective caps from the bottom of the trailer.
9. Assemble green trailer sides together with finished sides facing out.
10. Place trailer sides firmly into stake pockets in trailer bed.
11. Turn trailer bed upside down, place trailer chassis onto bed, align the 5 pegs in the green bed with the 5 holes in the black chassis and very firmly press or pound pegs into the holes with hammer until firmly seated.