Do-It-Yourself Bike Tune-Up: A 5-Step Checklist

  • By Aaron Hersh
  • Published Nov 28, 2012
  • Updated Feb 19, 2013 at 11:30 AM UTC

Adjust the rear derailleur cable tension.
Put the chain into the smallest (hardest) cog and upshift once. Look down from above the cassette to see if the upper derailleur pulley lines up with the second cog. If it is closer to the wheel, turn the barrel adjuster—the black plastic piece the housing inserts into—clockwise. If the pulley is further from the wheel, turn the barrel adjuster counter-clockwise.

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FILED UNDER: Beginner Essentials / Bike / Gear & Tech / Triathlete Buyer's Guide TAGS: / / / / / / /

Aaron Hersh

Aaron Hersh

Aaron Hersh is the Senior Tech Editor of Triathlete magazine. To submit a question, write Aaron at

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