Stem and handlebars installation for bicycles

NOTE: Some models of bicycles may be equipped with a stem that has an adjustable angle. In addition to the normal assembly, these stems will require angling the stem to the desired position, and securely tightening the 6mm Allen bolt located underneath the stem. Failure to do this may cause loss of steering control.

For “Quill” type stems:

1. Remove the protective shipping cap from the stem wedge.
2. Loosen the Stem Bolt with a 6mm allen wrench or 13mm box wrench.
3. Insert the stem into the head tube of the bicycle. Set the stem to the desired height ensuring that the “Minimum Insertion Line” is below the top nut of the headset.
4. Align the stem so it is in line with the front wheel.
5. Tighten the Stem Bolt with the 6mm allen wrench or 13mm box wrench.

For “Ahead” Type Stems:

1. If not already done install stem onto steerer tube.
2. Insert the compression bolt through the top cap and the stem. Begin threading into the star nut.
3. Tighten compression bolt so it removes all play from the headset bearings but allows the fork to rotate smoothly when turned side-to-side.
4. Align the stem so it is in line with the front wheel.
5. Tighten the stem clamp bolts to secure the stem to the steerer tube.

Handlebar Installation:

1. Remove the handlebar clamp bolts and handlebar clamp face plate from the stem.
2. Install the handlebar into the handlebar clamp.
3. Tighten the handlebar clamp bolts equally. The distance between the stem and handlebar clamp face plate: It should be equal on the top and bottom of the stem cap. “A” must be equal distance.

Link to tech document: generic-bicycle-stem-and-handlebar-assembly-rev2