How to Adjust Shimano Ultegra Gears

Written by tammie painter Google
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How to Adjust Shimano Ultegra Gears
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The Shimano Ultegra group grew from the company's 600 series of components. The group was first known as "600 Ultegra," but since 1998 has carried only the name Ultegra. The group is at the upper end of Shimano's components. The gears on an Ultegra group (or any group) need to be adjusted when you feel shifting isn't as smooth as you prefer or if shifting results in your chain falling off. The steps to adjust Ultegra gears are similar to the adjustment on most other component groups.

Skill level:
Easy

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Things you need

  • Bike stand
  • Bike with Ultegra components
  • Phillips head screwdriver

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Instructions

  1. 1

    Mount your bike into the bike stand. It is possible to do these adjustments with the bike turned over and resting on its handlebar and saddle, but the use of the bike stand will make it easier to see the limit screws and make adjustments. Once it is in the bike stand, make sure you can pedal the bike by hand without any encumbrance.

  2. 2

    Locate the limit screws on your front and rear derailleur. Each derailleur will have a high- and low-limit screw. On the rear derailleur the high-limit screw will be the top screw, and the low-limit screw will be at the bottom. On the front derailleur the high-limit screw is the one to the outside, and the low-limit screw is the one nearest the frame of the bike. These screws are also marked with an H and L, but these markings may wear off over time.

  3. 3

    Check the rear derailleur to determine if the high-limit screw needs to be adjusted. Using your left shifter, shift onto the biggest chainring (the front gears). As you pedal the bike with your hand, use the right shifter to shift onto the smallest cog of your cassette (the rear gears). If there is any difficulty with getting the chain to shift onto the smallest cog, loosen the high limit screw a quarter turn at a time until the chain will move smoothly onto the cog. Yyou will have to shift back and forth with the right shifter to check this. If the chain falls off the cog into the frame, tighten the high limit screw a quarter turn at a time until it moves onto the cog smoothly and stays there.

  4. 4

    Check the rear derailleur to determine if the low-limit screw needs to be adjusted. Using your left shifter, shift onto the smallest chainring. As you pedal the bike with your hand, use the right shifter to shift onto the biggest cog of your cassette. If there is any difficulty with getting the chain to shift onto the biggest cog, loosen the low limit screw a quarter turn at a time until the chain will move smoothly onto the cog. You will have to shift back and forth with the right shifter to check this. If the chain falls off the cog into the wheel, tighten the low-limit screw a quarter turn at a time until it moves onto the cog smoothly and stays there.

  5. 5

    Check to see if the low-limit screw on the front derailleur needs adjustment. Using your right shifter, shift into a middle cog on your cassette (the rear gears). Using the left shifter as you pedal the bike by hand, shift between your chainrings (the front gears). If the chain falls off the ring closest to the frame, tighten the low limit screw a quarter turn at a time until it shifts onto the ring without falling off. If the chain won't shift onto the inner ring or if it does so sluggishly, loosen the low limit screw a quarter turn at a time until it shifts smoothly.

  6. 6

    Check to see if the high limit screw on the front derailleur needs adjustment. Using your right shifter, shift into a middle cog on your cassette. Using the left shifter as you pedal the bike by hand, shift between your chainrings. If the chain falls off the outermost ring, tighten the high-limit screw a quarter turn at a time until it shifts onto the ring without falling off. If the chain won't shift onto the outer ring or if it does so sluggishly, loosen the high-limit screw a quarter turn at a time until it shifts smoothly.

Tips and warnings

  • The adjustments you need to make are very minute. Make only quarter turns at a time to the limit screws because a little bit of adjustment goes a long way.

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