What happens next?

How to replace bicycle trailer bearings
Remove the hitch pin from the 1/2 inch (12. 7 mm) axle bolt.
Remove the wheel from the trailer.
Setting the retaining ring pliers to " external ", remove the snap ring.

Options: (I) Remove the rubber band from the steel allen (backside), remove the widest catch button (37e), loosen the spark plug nut (65 mm), then pull the plug off. Remove the primary mounted fuel intake terminal on the rear of the trailer.. (II) Remove the 3 stick (small metal handle) attachments. Remove the line on the front of the bolt that keeps the rear wheel grounded.. (III) Using a mallet or other heavy tool, tap out the axle bolt. If wheel is asymmetrical, note carefully which side the bolt head goes into.. (IV) Replace the hitch pin screw at the wheel. Reverse the cycle to its correct manufacturer..
(III)