Occasionally, the steering system that holds your handlebars may become misaligned and need readjustment. The system is a hollow metal stem with a bolt through it, connected to a steel wedge that fits into the steering column. When inserted and tightened, the wedge jams against the inner wall, securing the stem in place. If it comes loose, the handlebars may become crooked. It is very easy to readjust the stem and straighten the handlebars by loosening the stem bolt. On more sophisticated steering systems, such as a threadless headset, the handlebars may be adjustable separate from the stem.
Step 1
Locate the stem bolt at the top of the steering system stem. Remove any plastic cover on the stem bolt.
Step 2
Insert the allen wrench in the stem bolt or use an adjustable wrench on the hex head of the stem bolt, depending upon the fitting. Turn the bolt counterclockwise several times to loosen the stem within the steering column.
Step 3
Remove the allen or adjustable wrench and tap the top of the bolt with a hammer to loosen the wedge, if necessary.
Step 4
Look for two allen bolts on the side of the neck of the handlebars, near the steering stem, if your bike has a threadless headset. Loosen the bolts.
Step 5
Readjust the handlebars by placing your foot against the wheel and turning the handlebars so they are perpendicular to the front wheel. Double check that the handlebars are also at the proper height.
Step 6
Reinsert the allen wrench or use the adjustable wrench to tighten the stem bolt until the stem is secure. Test the handlebars to ensure they will stay straight.
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