Razor Scream Machine Jr Owner's Manual page 10

continue to slide the handlebar assembly into the fork until the spring
buttons engage the holes (A) as shown in figure 7e., and the steering
tube extends through the upper fork crown (B). The fork stop must be
positioned in the slot in the upper crown. The fit between the tubes is a
close tolerance fit and may require a firm hand or taps with a rubber
mallet to nudge the handlebar all the way into the fork.
Figure 7e.
Install the tensioning cap and adjusting screw as shown in figure 7f.
Using an Allen key, snug the adjusting screw as shown in 7e until the
fork crown is firmly seated against the steering bushings. This is called
"preloading."
Figure 7f.
Once the fork crown is firmly seated, loosen the adjusting screw
approximately 1/4 to 1/2 turn. This relaxes the preloading and allows the
steering to rotate without binding. Test by turning the handlebars to full
lock left and right. It should steer with slight friction and no binding or
tight spots.
10